To our customers, Old Company Name in Catalogs and Other Documents On April 1st, 2010, NEC Electronics Corporation merged with Renesas Technology Corporation, and Renesas Electronics Corporation took over all the business of both companies. Therefore, although the old company name remains in this document, it is a valid Renesas Electronics document. We appreciate your understanding. Renesas Electronics website: http://www.renesas.com April 1st, 2010 Renesas Electronics Corporation Issued by: Renesas Electronics Corporation (http://www.renesas.com) Send any inquiries to http://www.renesas.com/inquiry. Notice 1. 2. 3. 4. 5. 6. 7. All information included in this document is current as of the date this document is issued. Such information, however, is subject to change without any prior notice. Before purchasing or using any Renesas Electronics products listed herein, please confirm the latest product information with a Renesas Electronics sales office. Also, please pay regular and careful attention to additional and different information to be disclosed by Renesas Electronics such as that disclosed through our website. Renesas Electronics does not assume any liability for infringement of patents, copyrights, or other intellectual property rights of third parties by or arising from the use of Renesas Electronics products or technical information described in this document. No license, express, implied or otherwise, is granted hereby under any patents, copyrights or other intellectual property rights of Renesas Electronics or others. You should not alter, modify, copy, or otherwise misappropriate any Renesas Electronics product, whether in whole or in part. Descriptions of circuits, software and other related information in this document are provided only to illustrate the operation of semiconductor products and application examples. You are fully responsible for the incorporation of these circuits, software, and information in the design of your equipment. Renesas Electronics assumes no responsibility for any losses incurred by you or third parties arising from the use of these circuits, software, or information. When exporting the products or technology described in this document, you should comply with the applicable export control laws and regulations and follow the procedures required by such laws and regulations. You should not use Renesas Electronics products or the technology described in this document for any purpose relating to military applications or use by the military, including but not limited to the development of weapons of mass destruction. Renesas Electronics products and technology may not be used for or incorporated into any products or systems whose manufacture, use, or sale is prohibited under any applicable domestic or foreign laws or regulations. Renesas Electronics has used reasonable care in preparing the information included in this document, but Renesas Electronics does not warrant that such information is error free. Renesas Electronics assumes no liability whatsoever for any damages incurred by you resulting from errors in or omissions from the information included herein. Renesas Electronics products are classified according to the following three quality grades: "Standard", "High Quality", and "Specific". The recommended applications for each Renesas Electronics product depends on the product's quality grade, as indicated below. You must check the quality grade of each Renesas Electronics product before using it in a particular application. You may not use any Renesas Electronics product for any application categorized as "Specific" without the prior written consent of Renesas Electronics. Further, you may not use any Renesas Electronics product for any application for which it is not intended without the prior written consent of Renesas Electronics. Renesas Electronics shall not be in any way liable for any damages or losses incurred by you or third parties arising from the use of any Renesas Electronics product for an application categorized as "Specific" or for which the product is not intended where you have failed to obtain the prior written consent of Renesas Electronics. The quality grade of each Renesas Electronics product is "Standard" unless otherwise expressly specified in a Renesas Electronics data sheets or data books, etc. "Standard": 8. 9. 10. 11. 12. Computers; office equipment; communications equipment; test and measurement equipment; audio and visual equipment; home electronic appliances; machine tools; personal electronic equipment; and industrial robots. "High Quality": Transportation equipment (automobiles, trains, ships, etc.); traffic control systems; anti-disaster systems; anticrime systems; safety equipment; and medical equipment not specifically designed for life support. "Specific": Aircraft; aerospace equipment; submersible repeaters; nuclear reactor control systems; medical equipment or systems for life support (e.g. artificial life support devices or systems), surgical implantations, or healthcare intervention (e.g. excision, etc.), and any other applications or purposes that pose a direct threat to human life. You should use the Renesas Electronics products described in this document within the range specified by Renesas Electronics, especially with respect to the maximum rating, operating supply voltage range, movement power voltage range, heat radiation characteristics, installation and other product characteristics. Renesas Electronics shall have no liability for malfunctions or damages arising out of the use of Renesas Electronics products beyond such specified ranges. Although Renesas Electronics endeavors to improve the quality and reliability of its products, semiconductor products have specific characteristics such as the occurrence of failure at a certain rate and malfunctions under certain use conditions. Further, Renesas Electronics products are not subject to radiation resistance design. Please be sure to implement safety measures to guard them against the possibility of physical injury, and injury or damage caused by fire in the event of the failure of a Renesas Electronics product, such as safety design for hardware and software including but not limited to redundancy, fire control and malfunction prevention, appropriate treatment for aging degradation or any other appropriate measures. Because the evaluation of microcomputer software alone is very difficult, please evaluate the safety of the final products or system manufactured by you. Please contact a Renesas Electronics sales office for details as to environmental matters such as the environmental compatibility of each Renesas Electronics product. Please use Renesas Electronics products in compliance with all applicable laws and regulations that regulate the inclusion or use of controlled substances, including without limitation, the EU RoHS Directive. Renesas Electronics assumes no liability for damages or losses occurring as a result of your noncompliance with applicable laws and regulations. This document may not be reproduced or duplicated, in any form, in whole or in part, without prior written consent of Renesas Electronics. Please contact a Renesas Electronics sales office if you have any questions regarding the information contained in this document or Renesas Electronics products, or if you have any other inquiries. (Note 1) "Renesas Electronics" as used in this document means Renesas Electronics Corporation and also includes its majorityowned subsidiaries. (Note 2) "Renesas Electronics product(s)" means any product developed or manufactured by or for Renesas Electronics. User's Manual TM TM V850/SB1 , V850/SB2 32-Bit Single-Chip Microcontroller Hardware PD703031A PD703031AY PD703032A PD703032AY PD703033A PD703033AY PD70F3032A PD70F3032AY PD70F3033A PD70F3033AY PD703030B PD703030BY PD703031B PD703031BY PD703032B PD703032BY PD703033B PD703033BY PD70F3030B PD70F3030BY PD70F3032B PD70F3032BY PD70F3033B PD70F3033BY Document No. U13850EJ6V0UD00 (6th edition) Date Published February 2003 N CP(K) 1999, 2000, 2003 Printed in Japan PD703034A PD703034AY PD703035A PD703035AY PD703037A PD703037AY PD70F3035A PD70F3035AY PD70F3037A PD70F3037AY PD703034B PD703034BY PD703035B PD703035BY PD703036H PD703036HY PD703037H PD703037HY PD70F3035B PD70F3035BY PD70F3036H PD70F3036HY PD70F3037H PD70F3037HY [MEMO] 2 User's Manual U13850EJ6V0UD NOTES FOR CMOS DEVICES 1 PRECAUTION AGAINST ESD FOR SEMICONDUCTORS Note: Strong electric field, when exposed to a MOS device, can cause destruction of the gate oxide and ultimately degrade the device operation. Steps must be taken to stop generation of static electricity as much as possible, and quickly dissipate it once, when it has occurred. Environmental control must be adequate. When it is dry, humidifier should be used. It is recommended to avoid using insulators that easily build static electricity. Semiconductor devices must be stored and transported in an anti-static container, static shielding bag or conductive material. All test and measurement tools including work bench and floor should be grounded. The operator should be grounded using wrist strap. Semiconductor devices must not be touched with bare hands. Similar precautions need to be taken for PW boards with semiconductor devices on it. 2 HANDLING OF UNUSED INPUT PINS FOR CMOS Note: No connection for CMOS device inputs can be cause of malfunction. If no connection is provided to the input pins, it is possible that an internal input level may be generated due to noise, etc., hence causing malfunction. CMOS devices behave differently than Bipolar or NMOS devices. Input levels of CMOS devices must be fixed high or low by using a pull-up or pull-down circuitry. Each unused pin should be connected to V DD or GND with a resistor, if it is considered to have a possibility of being an output pin. All handling related to the unused pins must be judged device by device and related specifications governing the devices. 3 STATUS BEFORE INITIALIZATION OF MOS DEVICES Note: Power-on does not necessarily define initial status of MOS device. Production process of MOS does not define the initial operation status of the device. Immediately after the power source is turned ON, the devices with reset function have not yet been initialized. Hence, power-on does not guarantee out-pin levels, I/O settings or contents of registers. Device is not initialized until the reset signal is received. Reset operation must be executed immediately after power-on for devices having reset function. 2 2 Purchase of NEC I C components conveys a license under the Philips I C Patent Rights to use these 2 2 components in an I C system, provided that the system conforms to the I C Standard Specification as defined by Philips. V850 Series, V850/SA1, V850/SB1, V850/SB2, IEBus, and Inter Equipment Bus are trademarks of NEC Electronics Corporation. Windows is either a registered trademark or a trademark of Microsoft Corporation in the United States and/or other countries. User's Manual U13850EJ6V0UD 3 These commodities, technology or software, must be exported in accordance with the export administration regulations of the exporting country. Diversion contrary to the law of that country is prohibited. * The information in this document is current as of December, 2002. The information is subject to change without notice. For actual design-in, refer to the latest publications of NEC Electronics data sheets or data books, etc., for the most up-to-date specifications of NEC Electronics products. Not all products and/or types are available in every country. Please check with an NEC Electronics sales representative for availability and additional information. * No part of this document may be copied or reproduced in any form or by any means without the prior written consent of NEC Electronics. NEC Electronics assumes no responsibility for any errors that may appear in this document. * NEC Electronics does not assume any liability for infringement of patents, copyrights or other intellectual property rights of third parties by or arising from the use of NEC Electronics products listed in this document or any other liability arising from the use of such products. No license, express, implied or otherwise, is granted under any patents, copyrights or other intellectual property rights of NEC Electronics or others. * Descriptions of circuits, software and other related information in this document are provided for illustrative purposes in semiconductor product operation and application examples. The incorporation of these circuits, software and information in the design of a customer's equipment shall be done under the full responsibility of the customer. NEC Electronics assumes no responsibility for any losses incurred by customers or third parties arising from the use of these circuits, software and information. * While NEC Electronics endeavors to enhance the quality, reliability and safety of NEC Electronics products, customers agree and acknowledge that the possibility of defects thereof cannot be eliminated entirely. To minimize risks of damage to property or injury (including death) to persons arising from defects in NEC Electronics products, customers must incorporate sufficient safety measures in their design, such as redundancy, fire-containment and anti-failure features. * NEC Electronics products are classified into the following three quality grades: "Standard", "Special" and "Specific". The "Specific" quality grade applies only to NEC Electronics products developed based on a customerdesignated "quality assurance program" for a specific application. The recommended applications of an NEC Electronics product depend on its quality grade, as indicated below. Customers must check the quality grade of each NEC Electronics product before using it in a particular application. "Standard": Computers, office equipment, communications equipment, test and measurement equipment, audio and visual equipment, home electronic appliances, machine tools, personal electronic equipment and industrial robots. "Special": Transportation equipment (automobiles, trains, ships, etc.), traffic control systems, anti-disaster systems, anti-crime systems, safety equipment and medical equipment (not specifically designed for life support). "Specific": Aircraft, aerospace equipment, submersible repeaters, nuclear reactor control systems, life support systems and medical equipment for life support, etc. The quality grade of NEC Electronics products is "Standard" unless otherwise expressly specified in NEC Electronics data sheets or data books, etc. If customers wish to use NEC Electronics products in applications not intended by NEC Electronics, they must contact an NEC Electronics sales representative in advance to determine NEC Electronics' willingness to support a given application. (Note) (1) "NEC Electronics" as used in this statement means NEC Electronics Corporation and also includes its majority-owned subsidiaries. (2) "NEC Electronics products" means any product developed or manufactured by or for NEC Electronics (as defined above). M8E 02. 11-1 4 User's Manual U13850EJ6V0UD Regional Information Some information contained in this document may vary from country to country. Before using any NEC Electronics product in your application, pIease contact the NEC Electronics office in your country to obtain a list of authorized representatives and distributors. They will verify: * Device availability * Ordering information * Product release schedule * Availability of related technical literature * Development environment specifications (for example, specifications for third-party tools and components, host computers, power plugs, AC supply voltages, and so forth) * Network requirements In addition, trademarks, registered trademarks, export restrictions, and other legal issues may also vary from country to country. NEC Electronics America, Inc. (U.S.) Santa Clara, California Tel: 408-588-6000 800-366-9782 Fax: 408-588-6130 800-729-9288 NEC Electronics (Europe) GmbH Duesseldorf, Germany Tel: 0211-65 03 01 Fax: 0211-65 03 327 * Sucursal en Espana Madrid, Spain Tel: 091-504 27 87 Fax: 091-504 28 60 * Succursale Francaise Velizy-Villacoublay, France Tel: 01-30-67 58 00 Fax: 01-30-67 58 99 * Filiale Italiana Milano, Italy Tel: 02-66 75 41 Fax: 02-66 75 42 99 NEC Electronics Hong Kong Ltd. * Branch The Netherlands Eindhoven, The Netherlands Tel: 040-244 58 45 Fax: 040-244 45 80 NEC Electronics Hong Kong Ltd. Hong Kong Tel: 2886-9318 Fax: 2886-9022/9044 Seoul Branch Seoul, Korea Tel: 02-528-0303 Fax: 02-528-4411 * Tyskland Filial Taeby, Sweden Tel: 08-63 80 820 Fax: 08-63 80 388 NEC Electronics Shanghai, Ltd. * United Kingdom Branch Milton Keynes, UK Tel: 01908-691-133 Fax: 01908-670-290 NEC Electronics Taiwan Ltd. Shanghai, P.R. China Tel: 021-6841-1138 Fax: 021-6841-1137 Taipei, Taiwan Tel: 02-2719-2377 Fax: 02-2719-5951 NEC Electronics Singapore Pte. Ltd. Novena Square, Singapore Tel: 6253-8311 Fax: 6250-3583 J02.11 User's Manual U13850EJ6V0UD 5 Major Revisions in This Edition (1/3) Page 6 Description Throughout * Addition of the following products. PD703030B, 703030BY, 703031B, 703031BY, 703032B, 703032BY, 703033B, 703033BY, 703034B, 703034BY, 703035B, 703035BY, 703036H, 703036HY, 703037H, 703037HY, 70F3030B, 70F3030BY, 70F3032B, 70F3032BY, 70F3033B, 70F3033BY, 70F3035B, 70F3035BY, 70F3036H, 70F3036HY, 70F3037H, 70F3037HY * Deletion of the following products. PD703030A, 703030AY, 703036A, 703036AY p. 63 Addition of description on minimum instruction execution time in 1.5.1 p. 63 Addition of description on instruction set in 1.5.1 p. 73 Addition of description in Table 2-1 Pin I/O Buffer Power Supplies p. 80 Modification of description and addition of Notes in Table 2-3 Operating Mode p. 87 Addition of description in 2.3 (9) (b) (i) LBEN p. 92 Modification of P23 I/O circuit type and description on P33 in 2.4 Pin I/O Circuit Types, I/O Buffer Power Supplies and Connection of Unused Pins p. 96 Addition of description on minimum instruction execution time in 3.1 p. 100 Modification of description and addition of Note in 3.2.2 (2) Program status word (PSW) p. 110 Addition of 3.4.5 (2) (a) V850/SB1 (PD703031B, 703031BY), V850/SB2 (PD703034B, 703034BY) pp. 119, 124, 125 Modification of Note and addition of registers in 3.4.8 Peripheral I/O registers p. 126 Addition of description in 3.4.9 Specific registers p. 126 Modification of [Description example] in 3.4.9 Specific registers p. 126 Modification of Caution 2 in 3.4.9 Specific registers p. 127 Addition of Remarks in 3.4.9 (2) (b) Reset conditions (PRERR = 1) p. 129 Addition of Note and Caution in 4.2.2 (1) System control register (SYC) p. 158 Addition of Remark in 5.3.3 Priorities of maskable interrupts p. 162 Addition of Caution 2 in 5.3.4 Interrupt control register (xxICn) p. 165 Addition of Caution in 5.3.5 In-service priority register (ISPR) p. 165 Addition of Remark in 5.3.6 ID flag p. 176 Addition of Remark in 5.6.2 (2) To generate exception in service program p. 178 Addition of 5.8.1 Interrupt request valid timing after EI instruction p. 179 Addition of 5.9 Interrupt Control Register Bit Manipulation Instructions During DMA Transfer p. 184 Addition of description in Cautions in 6.3.1 (1) Processor clock control register (PCC) p. 185 Modification of description in 6.3.1 (1) (b) Example of subclock operation main clock operation setup p. 186 Modification of description in 6.3.1 (2) Power save control register (PSC) pp. 190, 191 Addition and deletion of description in Table 6-1 Operating Statuses in HALT Mode p. 192 Modification of description in Table 6-2 Operating Statuses in IDLE Mode p. 194 Addition of description in 6.4.4 (1) Settings and operating states p. 194 Modification of description in Table 6-3 Operating Statuses in Software STOP Mode User's Manual U13850EJ6V0UD Operating States of Pins in Each Major Revisions in This Edition (2/3) Pages Description p. 197 Addition of 6.6 (1) While an instruction is being executed on internal ROM p. 198 Addition of 6.6 (2) While an instruction is being executed on external ROM p. 206 Addition of description in Caution in 7.1.4 (1) 16-bit timer mode control registers 0, 1 (TMC0, TMC1) p. 207 Addition of description in Caution in 7.1.4 (2) Capture/compare control registers 0, 1 (CRC0, CRC1) p. 213 Modification of description in Figure 7-5 (a) 16-bit timer mode control registers 0, 1 (TMC0, TMC1) p. 214 Addition of Figure 7-6 Configuration of PPG Output p. 214 Addition of Figure 7-7 PPG Output Operation Timing p. 215 Modification of description in Figure 7-8 (a) 16-bit timer mode control registers 0, 1 (TMC0, TMC1) p. 217 Modification of description in Figure 7-11 (a) 16-bit timer mode control registers 0, 1 (TMC0, TMC1) p. 219 Modification of description in Figure 7-14 (a) 16-bit timer mode control registers 0, 1 (TMC0, TMC1) p. 221 Modification of description in Figure 7-17 Timing of Pulse Width Measurement by Restarting (with Rising Edge Specified) p. 222 Modification of description in Figure 7-18 (a) 16-bit timer mode control registers 0, 1 (TMC0, TMC1) p. 227 Modification of description in Caution in 7.2.6 (2) One-shot pulse output with external trigger p. 231 Modification of description in 7.2.7 (6) (a) One-shot pulse output by software p. 231 Modification of description in 7.2.7 (6) (b) One-shot pulse output with external trigger p. 234 Addition of 7.3.1 Outline p. 242 Change of Figure 7-32 Timing of Interval Timer Operation (3/3) p. 246 Addition of description to Remarks in Figure 7-34 Square Wave Output Operation Timing p. 248 Addition of description to Remarks in Figure 7-35 Timing of PWM Output p. 253 Addition of registers and Caution in Figure 8-1 Block Diagram of Watch Timer p. 254 Addition of registers and Note in Table 8-2 Configuration of Watch Timer p. 255 Addition of description and Caution in 8.3 Watch Timer Control Register p. 256 Addition of 8.3 (2) Watch timer high-speed clock selection register (WTNHC) p. 257 Addition of description in 8.3 (3) Watch timer clock selection register (WTNCS) p. 263 Addition of Caution in 9.3 (2) Watchdog timer clock selection register (WDCS) p. 268 Addition of description in 10.2 (2) 3-wire serial I/O mode (fixed to MSB first) p. 280 Modification of Caution in 10.3.2 (1) IIC control registers 0, 1 (IICC0, IICC1) p. 288 Addition of Caution in 10.3.2 (3) IIC clock selection registers 0, 1 (IICCL0, IICCL1) p. 334 Addition of 10.4 I2C Bus (B and H Versions) p. 402 Addition of description to Cautions in 10.5.2 (1) Asynchronous serial interface mode registers 0, 1 (ASIM0, ASIM1) p. 405 Addition of description to Cautions in 10.5.2 (4) Baud rate generator mode control registers n0, n1 (BRGMCn0, BRGMCn1) p. 406 Addition of description to Cautions in Figure 10-45 ASIMn Setting (Operation Stop Mode) p. 407 Addition of description to Cautions in Figure 10-46 ASIMn Setting (Asynchronous Serial Interface Mode) p. 410 Addition of description to Cautions in Figure 10-49 BRGMCn0 and BRGMCn1 Settings (Asynchronous Serial Interface Mode) User's Manual U13850EJ6V0UD 7 Major Revisions in This Edition (3/3) Pages Description p. 437 Addition of Caution in 11.3 (2) Analog input channel specification register (ADS) p. 447 Addition of 11.7 How to Read A/D Converter Characteristics Table p. 452 Addition of 12.3 Configuration p. 455 Addition of 12.4 (2) (a) V850/SB1 (PD703031B, 703031BY), V850/SB2 (PD703034B, 703034BY) p. 460 Addition of Caution in 12.4 (5) DMA channel control registers 0 to 5 (DCHC0 to DCHC5) p. 462 Addition of 12.5 Operation p. 463 Addition of 12.6 Cautions p. 466 Addition of 13.2 Features p. 468 Addition of 13.3 (2) Output latch p. 471 Addition of description in 13.5 Usage p. 473 Addition of 13.7 (3) p. 474 Addition of description in Table 14-1 Pin I/O Buffer Power Supplies p. 501 Addition of Caution in 14.2.8 (1) Function of P9 pins p. 504 Addition of Caution in 14.2.9 (1) Function of P10 pins p. 511, 512 Addition of description in Table 14-12 Setting When Port Pin is Used as Alternate Function p. 515 Addition of 14.4 Port Function Operation p. 517 Addition of description in 16.1 Outline p. 517 Addition of description in Figure 16-1 Regulator p. 524 Addition of 18.1.1 (2) V850/SB1 (PD70F3030B, 70F3030BY), V850/SB2 (PD70F3036H, 70F3036HY) p. 526 Addition of Figure 18-1 100GC-8EU) p. 527 Addition of Table 18-1 Table for Wiring of V850/SB1 and V850/SB2 Flash Writing Adapter (FA-100GC8EU) p. 528 Addition of Figure 18-2 Wiring Example of V850/SB1 and V850/SB2 Flash Writing Adapter (FA-100GF3BA) p. 529 Addition of Table 18-2 Table for Wiring of V850/SB1 and V850/SB2 Flash Writing Adapter (FA-100GF3BA) p. 549 Modification of description in Table 19-5 Acknowledge Signal Output Condition of Control Field p. 560 Addition of register to Table 19-7 Internal Registers of IEBus Controller p. 582 Addition of Remark in 19.3.2 (13) IEBus clock selection register (IECLK) p. 583 Addition of 19.3.2 (14) IEBus high-speed clock selection register (IEHCLK) p. 600 Addition of CHAPTER 20 ELECTRICAL SPECIFICATIONS p. 635 Addition of CHAPTER 21 PACKAGE DRAWINGS p. 637 Addition of CHAPTER 22 RECOMMENDED SOLDERING CONDITIONS p. 642 Addition of APPENDIX A NOTES ON TARGET SYSTEM DESIGN p. 658 Modification of APPENDIX D INDEX p. 664 Addition of APPENDIX E REVISION HISTORY Wiring Example of V850/SB1 and V850/SB2 Flash Writing Adapter (FA- The mark 8 shows major revised points. User's Manual U13850EJ6V0UD INTRODUCTION Readers This manual is intended for users who wish to understand the functions of the V850/SB1 and V850/SB2 and design application systems using the V850/SB1 or V850/SB2. Purpose This manual is intended to give users to an understanding of the hardware functions described in the Organization below. Organization The V850/SB1, V850/SB2 User's Manual is divided into two parts: hardware (this manual) and architecture (V850 Series TM Architecture User's Manual). Hardware Architecture * Pin function * Data type * CPU function * Register set * On-chip peripheral function * Instruction format and instruction set * Flash memory programming * Interrupt and exception * IEBus controller (V850/SB2 only) * Pipeline operation * Electrical specifications How to Read This Manual It is assumed that the reader of this manual has general knowledge in the fields of electrical engineering, logic circuits, and microcontrollers. To find out the details of a register whose name is known: Refer to APPENDIX B REGISTER INDEX. To find out the details of a function, etc., whose name is known: Refer to APPENDIX D INDEX. To understand the details of a instruction function: Refer to V850 Series Architecture User's Manual available separately. To know the electrical specifications of the V850/SB1 and V850/SB2: Refer to CHAPTER 20 ELECTRICAL SPECIFICATIONS. How to read register formats: Names of bits whose numbers are enclosed in a square are defined in the device file under reserved words. To understand the overall functions of the V850/SB1 and V850/SB2: Read this manual in accordance with the CONTENTS. User's Manual U13850EJ6V0UD 9 Conventions Data significance: Higher digits on the left and lower digits on the right Active low: xxx (overscore over pin or signal name) Memory map address: Higher addresses at the top and lower addresses at the bottom Note: Footnote for items marked with Note in the text Caution: Information requiring particular attention Remark: Supplementary information Number representation: Binary ... xxxx or xxxxB Decimal ... xxxx Hexadecimal ... xxxxH Prefixes indicating power of 2 (address space, memory capacity): 10 K (kilo): 2 ... 1024 20 M (mega): 2 ... 1024 30 G (giga): 2 ... 1024 10 2 3 User's Manual U13850EJ6V0UD Related Documents The related documents indicated in this publication may include preliminary versions. However, preliminary versions are not marked as such. Related documents for V850/SB1 and V850/SB2 Document Name Document No. V850 Series Architecture User's Manual U10243E V850/SB1, V850/SB2 Hardware User's Manual This manual Related documents for development tool (user's manual) Document Name CA850 Ver. 2.40 or Later C Compiler Package Document No. Operation U15024E C Language U15025E Project Manager U15026E Assembly Language U15027E ID850 Ver. 2.40 Integrated Debugger Operation (WindowsTM Based) U15181E SM850 Ver. 2.40 System Simulator Operation (Windows Based) U15182E SM850 Ver. 2.00 or Later System Simulator External Part User Open Interface Specifications U14873E RX850 Ver. 3.13 or Later Real-time OS Basic U13430E Installation U13410E Technical U13431E Basic U13773E Installation U13774E Technical U13772E RX850 Pro Ver. 3.13 Real-time OS RD850 Ver. 3.01 Task Debugger U13737E RD850 Pro Ver. 3.01 Task Debugger U13916E AZ850 Ver. 3.0 System Performance Analyzer U14410E PG-FP3 Flash Memory Programmer U13502E PG-FP4 Flash Memory Programmer U15260E User's Manual U13850EJ6V0UD 11 CONTENTS CHAPTER 1 1.1 1.2 1.3 1.4 1.5 General.......................................................................................................................................29 V850/SB1 (A Versions) .............................................................................................................33 1.2.1 Features (V850/SB1 (A versions)) ..............................................................................................33 1.2.2 Application fields (V850/SB1 (A versions)) .................................................................................34 1.2.3 Ordering information (V850/SB1 (A versions))............................................................................35 1.2.4 Pin configuration (top view) (V850/SB1 (A versions)) .................................................................36 1.2.5 Function blocks (V850/SB1 (A versions)) ...................................................................................39 V850/SB1 (B Versions) .............................................................................................................43 1.3.1 Features (V850/SB1 (B versions)) ..............................................................................................43 1.3.2 Application fields (V850/SB1 (B versions)) .................................................................................44 1.3.3 Ordering information (V850/SB1 (B versions))............................................................................45 1.3.4 Pin configuration (top view) (V850/SB1 (B versions)) .................................................................46 1.3.5 Function blocks (V850/SB1 (B versions)) ...................................................................................49 V850/SB2 (A Versions) .............................................................................................................53 1.4.1 Features (V850/SB2 (A versions)) ..............................................................................................53 1.4.2 Application fields (V850/SB2 (A versions)) .................................................................................54 1.4.3 Ordering information (V850/SB2 (A versions))............................................................................55 1.4.4 Pin configuration (top view) (V850/SB2 (A versions)) .................................................................56 1.4.5 Function blocks (V850/SB2 (A versions)) ...................................................................................59 V850/SB2 (B and H Versions) ..................................................................................................63 1.5.1 Features (V850/SB2 (B and H versions))....................................................................................63 1.5.2 Application fields (V850/SB2 (B and H versions)) .......................................................................64 1.5.3 Ordering information (V850/SB2 (B and H versions)) .................................................................65 1.5.4 Pin configuration (top view) (V850/SB2 (B and H versions)).......................................................66 1.5.5 Function blocks (V850/SB2 (B and H versions)) .........................................................................69 CHAPTER 2 2.1 2.2 2.3 2.4 2.5 3.3 3.4 CPU FUNCTIONS..............................................................................................................96 Features .....................................................................................................................................96 CPU Register Set ......................................................................................................................97 3.2.1 Program register set....................................................................................................................98 3.2.2 System register set .....................................................................................................................99 Operation Modes ....................................................................................................................102 Address Space ........................................................................................................................103 3.4.1 12 PIN FUNCTIONS ...............................................................................................................73 List of Pin Functions ................................................................................................................73 Pin States...................................................................................................................................80 Description of Pin Functions...................................................................................................81 Pin I/O Circuit Types, I/O Buffer Power Supplies and Connection of Unused Pins...........92 Pin I/O Circuits ..........................................................................................................................94 CHAPTER 3 3.1 3.2 INTRODUCTION.................................................................................................................29 CPU address space ..................................................................................................................103 User's Manual U13850EJ6V0UD 3.4.2 Image ........................................................................................................................................ 104 3.4.3 Wrap-around of CPU address space ........................................................................................ 105 3.4.4 Memory map ............................................................................................................................. 106 3.4.5 Area .......................................................................................................................................... 107 3.4.6 External expansion mode ......................................................................................................... 114 3.4.7 Recommended use of address space ...................................................................................... 117 3.4.8 Peripheral I/O registers ............................................................................................................. 119 3.4.9 Specific registers....................................................................................................................... 126 CHAPTER 4 4.1 4.2 4.3 4.4 4.5 4.6 4.7 BUS CONTROL FUNCTION ..........................................................................................128 Features...................................................................................................................................128 Bus Control Pins and Control Register................................................................................128 4.2.1 Bus control pins ........................................................................................................................ 128 4.2.2 Control register ......................................................................................................................... 129 Bus Access .............................................................................................................................129 4.3.1 Number of access clocks .......................................................................................................... 129 4.3.2 Bus width .................................................................................................................................. 130 Memory Block Function.........................................................................................................131 Wait Function..........................................................................................................................132 4.5.1 Programmable wait function...................................................................................................... 132 4.5.2 External wait function................................................................................................................ 133 4.5.3 Relationship between programmable wait and external wait .................................................... 133 Idle State Insertion Function .................................................................................................134 Bus Hold Function..................................................................................................................135 4.7.1 Outline of function ..................................................................................................................... 135 4.7.2 Bus hold procedure................................................................................................................... 136 4.7.3 Operation in power save mode ................................................................................................. 136 4.8 Bus Timing ..............................................................................................................................137 4.9 Bus Priority .............................................................................................................................144 4.10 Memory Boundary Operation Conditions ............................................................................145 4.10.1 Program space.......................................................................................................................... 145 4.10.2 Data space................................................................................................................................ 145 CHAPTER 5 5.1 Outline .....................................................................................................................................146 5.1.1 5.2 5.3 INTERRUPT/EXCEPTION PROCESSING FUNCTION .................................................146 Features.................................................................................................................................... 146 Non-Maskable Interrupt .........................................................................................................149 5.2.1 Operation .................................................................................................................................. 150 5.2.2 Restore ..................................................................................................................................... 152 5.2.3 NP flag ...................................................................................................................................... 153 5.2.4 Noise eliminator of NMI pin ....................................................................................................... 153 5.2.5 Edge detection function of NMI pin ........................................................................................... 154 Maskable Interrupts................................................................................................................155 5.3.1 Operation .................................................................................................................................. 155 5.3.2 Restore ..................................................................................................................................... 157 5.3.3 Priorities of maskable interrupts................................................................................................ 158 User's Manual U13850EJ6V0UD 13 5.4 5.3.4 Interrupt control register (xxICn) ...............................................................................................162 5.3.5 In-service priority register (ISPR) ..............................................................................................165 5.3.6 ID flag........................................................................................................................................165 5.3.7 Watchdog timer mode register (WDTM)....................................................................................166 5.3.8 Noise elimination.......................................................................................................................166 5.3.9 Edge detection function.............................................................................................................168 Software Exceptions ..............................................................................................................169 5.4.1 5.5 5.6 5.7 5.8 Operation ..................................................................................................................................169 5.4.2 Restore......................................................................................................................................170 5.4.3 EP flag.......................................................................................................................................171 Exception Trap ........................................................................................................................171 5.5.1 Illegal opcode definition.............................................................................................................171 5.5.2 Operation ..................................................................................................................................171 5.5.3 Restore......................................................................................................................................173 Priority Control........................................................................................................................174 5.6.1 Priorities of interrupts and exceptions .......................................................................................174 5.6.2 Multiple interrupt servicing ........................................................................................................174 Interrupt Latency Time ...........................................................................................................177 Periods in Which Interrupt Is Not Acknowledged ...............................................................177 5.8.1 Interrupt request valid timing after EI instruction.......................................................................178 5.9 Interrupt Control Register Bit Manipulation Instructions During DMA Transfer..............179 5.10 Key Interrupt Function ...........................................................................................................180 CHAPTER 6 6.1 6.2 6.3 Outline......................................................................................................................................182 Configuration ..........................................................................................................................183 Clock Output Function ...........................................................................................................183 6.3.1 6.4 7.2 14 Outline.......................................................................................................................................188 6.4.2 HALT mode ...............................................................................................................................189 6.4.3 IDLE mode ................................................................................................................................192 6.4.4 Software STOP mode ...............................................................................................................194 Oscillation Stabilization Time................................................................................................196 Notes on Power Save Function .............................................................................................197 CHAPTER 7 7.1 Control registers ........................................................................................................................184 Power Save Functions ...........................................................................................................188 6.4.1 6.5 6.6 CLOCK GENERATION FUNCTION...............................................................................182 TIMER/COUNTER FUNCTION........................................................................................200 16-Bit Timer (TM0, TM1) .........................................................................................................200 7.1.1 Outline.......................................................................................................................................200 7.1.2 Function ....................................................................................................................................200 7.1.3 Configuration.............................................................................................................................202 7.1.4 Timer 0, 1 control registers .......................................................................................................205 16-Bit Timer Operation ...........................................................................................................211 7.2.1 Operation as interval timer (16 bits) ..........................................................................................211 7.2.2 PPG output operation................................................................................................................213 7.2.3 Pulse width measurement .........................................................................................................215 User's Manual U13850EJ6V0UD 7.3 7.4 7.2.4 Operation as external event counter......................................................................................... 222 7.2.5 Operation to output square wave.............................................................................................. 223 7.2.6 Operation to output one-shot pulse........................................................................................... 225 7.2.7 Cautions.................................................................................................................................... 230 8-Bit Timer (TM2 to TM7)........................................................................................................234 7.3.1 Outline....................................................................................................................................... 234 7.3.2 Functions .................................................................................................................................. 234 7.3.3 Configuration............................................................................................................................. 235 7.3.4 Timer n control register ............................................................................................................. 236 8-Bit Timer Operation.............................................................................................................242 7.4.1 Operation as interval timer (8-bit operation) ............................................................................. 242 7.4.2 Operation as external event counter......................................................................................... 245 7.4.3 Operation as square wave output (8-bit resolution) .................................................................. 246 7.4.4 Operation as 8-bit PWM output................................................................................................. 247 7.4.5 Operation as interval timer (16 bits).......................................................................................... 250 7.4.6 Cautions.................................................................................................................................... 252 CHAPTER 8 8.1 8.2 8.3 8.4 Function ..................................................................................................................................253 Configuration ..........................................................................................................................254 Watch Timer Control Registers.............................................................................................255 Operation.................................................................................................................................258 8.4.1 Operation as watch timer .......................................................................................................... 258 8.4.2 Operation as interval timer........................................................................................................ 258 8.4.3 Cautions.................................................................................................................................... 259 CHAPTER 9 9.1 9.2 9.3 9.4 9.5 WATCH TIMER................................................................................................................253 WATCHDOG TIMER .......................................................................................................260 Functions ................................................................................................................................260 Configuration ..........................................................................................................................262 Watchdog Timer Control Register ........................................................................................262 Operation.................................................................................................................................265 9.4.1 Operation as watchdog timer .................................................................................................... 265 9.4.2 Operation as interval timer........................................................................................................ 266 Standby Function Control Register......................................................................................267 CHAPTER 10 SERIAL INTERFACE FUNCTION................................................................................268 10.1 Overview..................................................................................................................................268 10.2 3-Wire Serial I/O (CSI0 to CSI3) .............................................................................................268 10.2.1 Configuration............................................................................................................................. 269 10.2.2 CSIn control registers ............................................................................................................... 270 10.2.3 Operations ................................................................................................................................ 272 2 10.3 I C Bus (A Versions) ...............................................................................................................275 10.3.1 Configuration............................................................................................................................. 278 10.3.2 I C control registers................................................................................................................... 280 10.3.3 I C bus mode functions ............................................................................................................. 291 2 2 User's Manual U13850EJ6V0UD 15 2 10.3.4 I C bus definitions and control methods ....................................................................................292 10.3.5 I C interrupt requests (INTIICn) .................................................................................................299 10.3.6 Interrupt request (INTIICn) generation timing and wait control .................................................317 10.3.7 Address match detection method..............................................................................................318 10.3.8 Error detection...........................................................................................................................318 10.3.9 Extension code..........................................................................................................................318 2 10.3.10 Arbitration..................................................................................................................................319 10.3.11 Wakeup function .......................................................................................................................320 10.3.12 Communication reservation.......................................................................................................321 10.3.13 Cautions ....................................................................................................................................324 10.3.14 Communication operations........................................................................................................325 10.3.15 Timing of data communication ..................................................................................................327 2 10.4 I C Bus (B and H Versions) ....................................................................................................334 10.4.1 Configuration.............................................................................................................................337 10.4.2 I C control register.....................................................................................................................339 10.4.3 I C bus mode functions .............................................................................................................352 10.4.4 I C bus definitions and control methods ....................................................................................353 10.4.5 I C interrupt requests (INTIICn) .................................................................................................360 10.4.6 Interrupt request (INTIICn) generation timing and wait control .................................................378 10.4.7 Address match detection method..............................................................................................379 10.4.8 Error detection...........................................................................................................................379 10.4.9 Extension code..........................................................................................................................379 2 2 2 2 10.4.10 Arbitration..................................................................................................................................380 10.4.11 Wakeup function .......................................................................................................................382 10.4.12 Communication reservation.......................................................................................................383 10.4.13 Cautions ....................................................................................................................................388 10.4.14 Communication operations........................................................................................................389 10.4.15 Timing of data communication ..................................................................................................392 10.5 Asynchronous Serial Interface (UART0, UART1) ................................................................399 10.5.1 Configuration.............................................................................................................................399 10.5.2 UARTn control registers ............................................................................................................401 10.5.3 Operations.................................................................................................................................406 10.5.4 Standby function .......................................................................................................................418 10.6 3-Wire Variable-Length Serial I/O (CSI4)...............................................................................419 10.6.1 10.6.2 CSI4 control registers................................................................................................................422 10.6.3 Operations.................................................................................................................................426 CHAPTER 11 11.1 11.2 11.3 11.4 Configuration.............................................................................................................................419 A/D CONVERTER..........................................................................................................431 Function...................................................................................................................................431 Configuration ..........................................................................................................................433 Control Registers....................................................................................................................435 Operation .................................................................................................................................438 11.4.1 Basic operation .........................................................................................................................438 11.4.2 Input voltage and conversion result ..........................................................................................440 11.4.3 A/D converter operation mode ..................................................................................................441 11.5 Low Power Consumption Mode ............................................................................................443 16 User's Manual U13850EJ6V0UD 11.6 Cautions ..................................................................................................................................443 11.7 How to Read A/D Converter Characteristics Table .............................................................447 CHAPTER 12 12.1 12.2 12.3 12.4 12.5 12.6 Functions ................................................................................................................................451 Transfer Completion Interrupt Request ...............................................................................451 Configuration ..........................................................................................................................452 Control Registers ...................................................................................................................453 Operation.................................................................................................................................462 Cautions ..................................................................................................................................463 CHAPTER 13 13.1 13.2 13.3 13.4 13.5 13.6 13.7 DMA FUNCTIONS .........................................................................................................451 REAL-TIME OUTPUT FUNCTION (RTO) ...................................................................466 Function ..................................................................................................................................466 Features...................................................................................................................................466 Configuration ..........................................................................................................................467 RTO Control Registers...........................................................................................................469 Usage .......................................................................................................................................471 Operation.................................................................................................................................472 Cautions ..................................................................................................................................473 CHAPTER 14 PORT FUNCTION..........................................................................................................474 14.1 Port Configuration..................................................................................................................474 14.2 Port Pin Function....................................................................................................................474 14.2.1 Port 0 ........................................................................................................................................ 474 14.2.2 Port 1 ........................................................................................................................................ 479 14.2.3 Port 2 ........................................................................................................................................ 483 14.2.4 Port 3 ........................................................................................................................................ 488 14.2.5 Ports 4 and 5............................................................................................................................. 492 14.2.6 Port 6 ........................................................................................................................................ 495 14.2.7 Ports 7 and 8............................................................................................................................. 498 14.2.8 Port 9 ........................................................................................................................................ 500 14.2.9 Port 10 ...................................................................................................................................... 503 14.2.10 Port 11 ..................................................................................................................................... 507 14.3 Setting When Port Pin Is Used as Alternate Function ........................................................511 14.4 Port Function Operation ........................................................................................................515 14.4.1 Write operation to I/O port......................................................................................................... 515 14.4.2 Read operation from I/O port .................................................................................................... 515 CHAPTER 15 RESET FUNCTION........................................................................................................516 15.1 General ....................................................................................................................................516 15.2 Pin Operations ........................................................................................................................516 CHAPTER 16 REGULATOR .................................................................................................................517 16.1 Outline .....................................................................................................................................517 User's Manual U13850EJ6V0UD 17 16.2 Operation .................................................................................................................................517 CHAPTER 17 ROM CORRECTION FUNCTION .................................................................................518 17.1 General.....................................................................................................................................518 17.2 ROM Correction Peripheral I/O Registers ............................................................................519 CHAPTER 18 FLASH MEMORY ..........................................................................................................523 18.1 Features ...................................................................................................................................523 18.2 18.3 18.4 18.5 18.1.1 Erase unit ..................................................................................................................................524 18.1.2 Write/read time ..........................................................................................................................524 Writing with Flash Programmer ............................................................................................525 Programming Environment ...................................................................................................530 Communication Mode ............................................................................................................530 Pin Connection .......................................................................................................................533 18.5.1 VPP pin .......................................................................................................................................533 18.5.2 Serial interface pin ....................................................................................................................533 18.5.3 RESET pin.................................................................................................................................536 18.5.4 Port pins (including NMI) ...........................................................................................................536 18.5.5 Other signal pins .......................................................................................................................536 18.5.6 Power supply.............................................................................................................................536 18.6 Programming Method.............................................................................................................537 18.6.1 Flash memory control................................................................................................................537 18.6.2 Flash memory programming mode ...........................................................................................538 18.6.3 Selection of communication mode ............................................................................................539 18.6.4 Communication command.........................................................................................................539 18.6.5 Resources used ........................................................................................................................540 CHAPTER 19 IEBus CONTROLLER (V850/SB2) ..............................................................................541 19.1 IEBus Controller Function .....................................................................................................541 19.1.1 Communication protocol of IEBus .............................................................................................541 19.1.2 Determination of bus mastership (arbitration) ...........................................................................542 19.1.3 Communication mode ...............................................................................................................542 19.1.4 Communication address............................................................................................................543 19.1.5 Broadcasting communication ....................................................................................................543 19.1.6 Transfer format of IEBus ...........................................................................................................544 19.1.7 Transfer data.............................................................................................................................554 19.1.8 Bit format ...................................................................................................................................557 19.2 IEBus Controller Configuration.............................................................................................558 19.3 Internal Registers of IEBus Controller..................................................................................560 19.3.1 Internal register list....................................................................................................................560 19.3.2 Internal registers .......................................................................................................................561 19.4 Interrupt Operations of IEBus Controller .............................................................................584 18 19.4.1 Interrupt control block................................................................................................................584 19.4.2 Interrupt source list....................................................................................................................585 19.4.3 Communication error source processing list .............................................................................586 User's Manual U13850EJ6V0UD 19.5 Interrupt Generation Timing and Main CPU Processing ....................................................588 19.5.1 Master transmission.................................................................................................................. 588 19.5.2 Master reception ....................................................................................................................... 590 19.5.3 Slave transmission.................................................................................................................... 592 19.5.4 Slave reception ......................................................................................................................... 594 19.5.5 Interval of occurrence of interrupt for IEBus control.................................................................. 596 CHAPTER 20 ELECTRICAL SPECIFICATIONS .................................................................................600 CHAPTER 21 PACKAGE DRAWINGS ................................................................................................635 CHAPTER 22 RECOMMENDED SOLDERING CONDITIONS ...........................................................637 APPENDIX A NOTES ON TARGET SYSTEM DESIGN ...................................................................642 APPENDIX B REGISTER INDEX .........................................................................................................644 APPENDIX C INSTRUCTION SET LIST .............................................................................................651 APPENDIX D INDEX..............................................................................................................................658 APPENDIX E REVISION HISTORY......................................................................................................664 User's Manual U13850EJ6V0UD 19 LIST OF FIGURES (1/6) Figure No. Title Page 3-1 CPU Register Set ...........................................................................................................................................97 3-2 CPU Address Space.....................................................................................................................................103 3-3 Image on Address Space .............................................................................................................................104 3-4 Program Space.............................................................................................................................................105 3-5 Data Space ...................................................................................................................................................105 3-6 Memory Map.................................................................................................................................................106 3-7 Internal ROM Area (128 KB).........................................................................................................................107 3-8 Internal ROM/Flash Memory Area (256 KB) .................................................................................................107 3-9 Internal ROM/Flash Memory Area (384 KB) .................................................................................................108 3-10 Internal ROM/Flash Memory Area (512 KB) .................................................................................................108 3-11 Internal RAM Area (8 KB) .............................................................................................................................110 3-12 Internal RAM Area (12 KB) ...........................................................................................................................110 3-13 Internal RAM Area (16 KB) ...........................................................................................................................111 3-14 Internal RAM Area (24 KB) ...........................................................................................................................111 3-15 On-Chip Peripheral I/O Area.........................................................................................................................112 3-16 External Memory Area (When Expanded to 64 K, 256 K, or 1 MB)..............................................................113 3-17 External Memory Area (When Expanded to 4 MB).......................................................................................114 3-18 Application of Wrap-Around..........................................................................................................................117 3-19 Recommended Memory Map (Flash Memory Version) ................................................................................118 4-1 Byte Access (8 Bits)......................................................................................................................................130 4-2 Halfword Access (16 Bits).............................................................................................................................130 4-3 Word Access (32 Bits) ..................................................................................................................................130 4-4 Memory Block ...............................................................................................................................................131 4-5 Wait Control ..................................................................................................................................................133 4-6 Example of Inserting Wait States..................................................................................................................133 4-7 Bus Hold Procedure......................................................................................................................................136 4-8 Memory Read ...............................................................................................................................................137 4-9 Memory Write ...............................................................................................................................................141 4-10 Bus Hold Timing ...........................................................................................................................................143 5-1 Non-Maskable Interrupt Servicing ................................................................................................................150 5-2 Acknowledging Non-Maskable Interrupt Request.........................................................................................151 5-3 RETI Instruction Processing .........................................................................................................................152 5-4 Maskable Interrupt Servicing ........................................................................................................................156 5-5 RETI Instruction Processing .........................................................................................................................157 5-6 Example of Multiple Interrupt Servicing ........................................................................................................159 5-7 Example of Servicing Interrupt Requests Generated Simultaneously ..........................................................161 5-8 Software Exception Processing ....................................................................................................................169 5-9 RETI Instruction Processing .........................................................................................................................170 5-10 Illegal Opcode...............................................................................................................................................171 5-11 Exception Trap Processing...........................................................................................................................172 5-12 RETI Instruction Processing .........................................................................................................................173 20 User's Manual U13850EJ6V0UD LIST OF FIGURES (2/6) Figure No. 5-13 Title Page Pipeline Operation at Interrupt Request Acknowledgment........................................................................... 177 5-14 Pipeline Flow and Interrupt Request Signal Generation Timing................................................................... 179 5-15 Key Return Block Diagram ........................................................................................................................... 181 6-1 Clock Generator ........................................................................................................................................... 183 6-2 Oscillation Stabilization Time ....................................................................................................................... 196 7-1 Block Diagram of TM0 and TM1................................................................................................................... 201 7-2 Control Register Settings When TMn Operates as Interval Timer ............................................................... 211 7-3 Configuration of Interval Timer ..................................................................................................................... 212 7-4 Timing of Interval Timer Operation ............................................................................................................... 212 7-5 Control Register Settings in PPG Output Operation..................................................................................... 213 7-6 Configuration of PPG Output........................................................................................................................ 214 7-7 PPG Output Operation Timing...................................................................................................................... 214 7-8 Control Register Settings for Pulse Width Measurement with Free-Running Counter and One Capture Register............................................................................................................................ 215 7-9 7-10 Configuration for Pulse Width Measurement with Free-Running Counter.................................................... 216 Timing of Pulse Width Measurement with Free-Running Counter and One Capture Register (with Both Edges Specified) ......................................................................................................................... 216 7-11 Control Register Settings for Measurement of Two Pulse Widths with Free-Running Counter.................... 217 7-12 CRn1 Capture Operation with Rising Edge Specified .................................................................................. 218 7-13 Timing of Pulse Width Measurement with Free-Running Counter (with Both Edges Specified) .................. 218 7-14 Control Register Settings for Pulse Width Measurement with Free-Running Counter and Two Capture Registers.......................................................................................................................... 219 7-15 Timing of Pulse Width Measurement with Free-Running Counter and Two Capture Registers 7-16 Control Register Settings for Pulse Width Measurement by Restarting ....................................................... 221 7-17 Timing of Pulse Width Measurement by Restarting (with Rising Edge Specified) ....................................... 221 (with Rising Edge Specified)......................................................................................................................... 220 7-18 Control Register Settings in External Event Counter Mode.......................................................................... 222 7-19 Configuration of External Event Counter ...................................................................................................... 223 7-20 Timing of External Event Counter Operation (with Rising Edge Specified).................................................. 223 7-21 Control Register Settings in Square Wave Output Mode ............................................................................. 224 7-22 Timing of Square Wave Output Operation ................................................................................................... 225 7-23 Control Register Settings for One-Shot Pulse Output with Software Trigger ............................................... 226 7-24 Timing of One-Shot Pulse Output Operation with Software Trigger ............................................................. 227 7-25 Control Register Settings for One-Shot Pulse Output with External Trigger ................................................ 228 7-26 Timing of One-Shot Pulse Output Operation with External Trigger (with Rising Edge Specified) ................ 229 7-27 Start Timing of 16-Bit Timer Register n ........................................................................................................ 230 7-28 Timing After Changing Compare Register During Timer Count Operation................................................... 230 7-29 Data Hold Timing of Capture Register.......................................................................................................... 231 7-30 Operation Timing of OVFn Bit ...................................................................................................................... 232 7-31 Block Diagram of TM2 to TM7...................................................................................................................... 235 7-32 Timing of Interval Timer Operation ............................................................................................................... 242 User's Manual U13850EJ6V0UD 21 LIST OF FIGURES (3/6) Figure No. 7-33 Title Page Timing of External Event Counter Operation (with Rising Edge Specified) ..................................................245 7-34 Square Wave Output Operation Timing........................................................................................................246 7-35 Timing of PWM Output .................................................................................................................................248 7-36 Timing of Operation Based on CRn0 Transitions .........................................................................................249 7-37 Cascade Connection Mode with 16-Bit Resolution.......................................................................................251 7-38 Start Timing of Timer n .................................................................................................................................252 7-39 Timing After Compare Register Changes During Timer Count Operation....................................................252 8-1 Block Diagram of Watch Timer .....................................................................................................................253 8-2 Operation Timing of Watch Timer/Interval Timer ..........................................................................................259 8-3 Watch Timer Interrupt Request (INTWTN) Generation (Interrupt Period = 0.5 s).........................................259 9-1 Block Diagram of Watchdog Timer ...............................................................................................................260 10-1 Block Diagram of 3-Wire Serial I/O...............................................................................................................269 10-2 CSIMn Setting (Operation Stop Mode) .........................................................................................................272 10-3 CSIMn Setting (3-Wire Serial I/O Mode).......................................................................................................273 10-4 Timing of 3-Wire Serial I/O Mode .................................................................................................................274 10-5 Block Diagram of I C.....................................................................................................................................276 10-6 Serial Bus Configuration Example Using I C Bus .........................................................................................277 10-7 Pin Configuration Diagram............................................................................................................................292 10-8 I C Bus's Serial Data Transfer Timing ..........................................................................................................292 10-9 Start Condition ..............................................................................................................................................293 10-10 Address.........................................................................................................................................................293 10-11 Transfer Direction Specification....................................................................................................................294 10-12 ACK Signal ...................................................................................................................................................295 10-13 Stop Condition ..............................................................................................................................................296 10-14 Wait Signal....................................................................................................................................................297 10-15 Arbitration Timing Example...........................................................................................................................319 10-16 Communication Reservation Timing.............................................................................................................322 2 2 2 10-17 Timing for Acknowledging Communication Reservations.............................................................................322 10-18 Communication Reservation Flowchart ........................................................................................................323 10-19 Master Operation Flowchart .........................................................................................................................325 10-20 Slave Operation Flowchart ...........................................................................................................................326 10-21 Example of Master to Slave Communication (When 9-Clock Wait Is Selected for Both Master and Slave) .......................................................................328 10-22 Example of Slave to Master Communication (When 9-Clock Wait Is Selected for Both Master and Slave) .......................................................................331 2 10-23 Block Diagram of I C.....................................................................................................................................335 10-24 Serial Bus Configuration Example Using I C Bus .........................................................................................336 10-25 Pin Configuration Diagram............................................................................................................................353 10-26 I C Bus's Serial Data Transfer Timing ..........................................................................................................353 10-27 Start Conditions ............................................................................................................................................354 22 2 2 User's Manual U13850EJ6V0UD LIST OF FIGURES (4/6) Figure No. 10-28 Title Page Address ........................................................................................................................................................ 354 10-29 Transfer Direction Specification ................................................................................................................... 355 10-30 ACK Signal ................................................................................................................................................... 356 10-31 Stop Condition .............................................................................................................................................. 357 10-32 Wait Signal ................................................................................................................................................... 358 10-33 Arbitration Timing Example .......................................................................................................................... 381 10-34 Communication Reservation Timing............................................................................................................. 384 10-35 Timing for Accepting Communication Reservations..................................................................................... 384 10-36 Communication Reservation Flowchart........................................................................................................ 385 10-37 Timing at Which STTn = 1 Cannot Be Set.................................................................................................... 386 10-38 Master Communication Start or Stop Flowchart ........................................................................................... 387 10-39 Master Operation Flowchart (1).................................................................................................................... 389 10-40 Master Operation Flowchart (2).................................................................................................................... 390 10-41 Slave Operation Flowchart ........................................................................................................................... 391 10-42 Example of Master to Slave Communication (When 9-Clock Wait Is Selected for Both Master and Slave) ....................................................................... 393 10-43 Example of Slave to Master Communication 10-44 Block Diagram of UARTn ............................................................................................................................. 400 10-45 ASIMn Setting (Operation Stop Mode) ......................................................................................................... 406 10-46 ASIMn Setting (Asynchronous Serial Interface Mode) ................................................................................. 407 10-47 ASISn Setting (Asynchronous Serial Interface Mode).................................................................................. 408 10-48 BRGCn Setting (Asynchronous Serial Interface Mode)................................................................................ 409 (When 9-Clock Wait Is Selected for Both Master and Slave) ....................................................................... 396 10-49 BRGMCn0 and BRGMCn1 Settings (Asynchronous Serial Interface Mode)................................................ 410 10-50 Error Tolerance (When k = 16), Including Sampling Errors.......................................................................... 412 10-51 Format of Transmit/Receive Data in Asynchronous Serial Interface............................................................ 413 10-52 Timing of Asynchronous Serial Interface Transmit Completion Interrupt ..................................................... 415 10-53 Timing of Asynchronous Serial Interface Receive Completion Interrupt ...................................................... 416 10-54 Receive Error Timing.................................................................................................................................... 417 10-55 Block Diagram of CSI4 ................................................................................................................................. 420 10-56 When Transfer Bit Length Other Than 16 Bits Is Set ................................................................................... 421 10-57 CSIM4 Setting (Operation Stop Mode) ......................................................................................................... 426 10-58 CSIM4 Setting (3-Wire Variable-Length Serial I/O Mode) ............................................................................ 427 10-59 CSIB4 Setting (3-Wire Variable-Length Serial I/O Mode)............................................................................. 428 10-60 Timing of 3-Wire Variable-Length Serial I/O Mode....................................................................................... 429 10-61 Timing of 3-Wire Variable-Length Serial I/O Mode (When CSIB4 = 08H) .................................................... 430 11-1 Block Diagram of A/D Converter .................................................................................................................. 432 11-2 Basic Operation of A/D Converter ................................................................................................................ 439 11-3 Relationship Between Analog Input Voltage and A/D Conversion Result .................................................... 440 11-4 A/D Conversion by Hardware Start (with Falling Edge Specified)................................................................ 441 11-5 A/D Conversion by Software Start................................................................................................................ 442 11-6 Handling of Analog Input Pin ........................................................................................................................ 444 User's Manual U13850EJ6V0UD 23 LIST OF FIGURES (5/6) Figure No. 11-7 Title Page A/D Conversion End Interrupt Generation Timing ........................................................................................445 11-8 Handling of AVDD Pin ....................................................................................................................................446 11-9 Overall Error .................................................................................................................................................447 11-10 Quantization Error.........................................................................................................................................448 11-11 Zero-Scale Error ...........................................................................................................................................448 11-12 Full-Scale Error.............................................................................................................................................449 11-13 Differential Linearity Error .............................................................................................................................449 11-14 Integral Linearity Error ..................................................................................................................................450 11-15 Sampling Time..............................................................................................................................................450 12-1 Block Diagram of DMA .................................................................................................................................452 12-2 Correspondence Between DRAn Setting Value and Internal RAM (8 KB) ...................................................455 12-3 Correspondence Between DRAn Setting Value and Internal RAM (12 KB) .................................................456 12-4 Correspondence Between DRAn Setting Value and Internal RAM (16 KB) .................................................457 12-5 Correspondence Between DRAn Setting Value and Internal RAM (24 KB) .................................................458 12-6 DMA Transfer Operation Timing ...................................................................................................................462 12-7 Processing When Transfer Requests DMA0 to DMA5 Are Generated Simultaneously ...............................463 12-8 When Interrupt Servicing Occurs Twice During DMA Operation ..................................................................464 13-1 Block Diagram of RTO..................................................................................................................................467 13-2 Configuration of Real-Time Output Buffer Registers ....................................................................................468 13-3 Example of Operation Timing of RTO (When EXTR = 0, BYTE = 0) ............................................................472 14-1 Block Diagram of P00 to P07........................................................................................................................478 14-2 Block Diagram of P10 to P12, P14, and P15................................................................................................481 14-3 Block Diagram of P13 ...................................................................................................................................482 14-4 Block Diagram of P20 to P22, P24, and P25................................................................................................486 14-5 Block Diagram of P23, P26, and P27 ...........................................................................................................487 14-6 Block Diagram of P30 to P32 and P35 to P37..............................................................................................490 14-7 Block Diagram of P33 and P34.....................................................................................................................491 14-8 Block Diagram of P40 to P47 and P50 to P57..............................................................................................494 14-9 Block Diagram P60 to P65............................................................................................................................497 14-10 Block Diagram of P70 to P77 and P80 to P83..............................................................................................499 14-11 Block Diagram of P90 to P96........................................................................................................................502 14-12 Block Diagram of P100 to P107....................................................................................................................506 14-13 Block Diagram of P110 to P113....................................................................................................................510 15-1 System Reset Timing....................................................................................................................................516 16-1 Regulator ......................................................................................................................................................517 17-1 Block Diagram of ROM Correction................................................................................................................518 17-2 ROM Correction Operation and Program Flow.............................................................................................522 24 User's Manual U13850EJ6V0UD LIST OF FIGURES (6/6) Figure No. 18-1 Title Page Wiring Example of V850/SB1 and V850/SB2 Flash Writing Adapter (FA-100GC-8EU)............................... 526 18-2 Wiring Example of V850/SB1 and V850/SB2 Flash Writing Adapter (FA-100GF-3BA) ............................... 528 18-3 Environment Required for Writing Programs to Flash Memory .................................................................... 530 18-4 Communication with Dedicated Flash Programmer (UART0) ...................................................................... 530 18-5 Communication with Dedicated Flash Programmer (CSI0) .......................................................................... 531 18-6 Communication with Dedicated Flash Programmer (CSI0 + HS) ................................................................. 531 18-7 VPP Pin Connection Example........................................................................................................................ 533 18-8 Conflict of Signals (Serial Interface Input Pin) .............................................................................................. 534 18-9 Malfunction of Other Device ......................................................................................................................... 535 18-10 Conflict of Signals (RESET Pin) ................................................................................................................... 536 18-11 Procedure for Manipulating Flash Memory................................................................................................... 537 18-12 Flash Memory Programming Mode .............................................................................................................. 538 18-13 Communication Command ........................................................................................................................... 539 19-1 IEBus Transfer Signal Format ...................................................................................................................... 544 19-2 Master Address Field.................................................................................................................................... 545 19-3 Slave Address Field ..................................................................................................................................... 546 19-4 Control Field ................................................................................................................................................. 548 19-5 Telegraph Length Field ................................................................................................................................ 550 19-6 Data Field ..................................................................................................................................................... 551 19-7 Bit Configuration of Slave Status.................................................................................................................. 555 19-8 Configuration of Lock Address ..................................................................................................................... 556 19-9 Bit Format of IEBus ...................................................................................................................................... 557 19-10 IEBus Controller Block Diagram ................................................................................................................... 558 19-11 Interrupt Generation Timing (for (1), (3), and (4))......................................................................................... 567 19-12 Interrupt Generation Timing (for (2) and (5)) ................................................................................................ 568 19-13 Timing of INTIE2 Interrupt Generation in Locked State (for (4) and (5)) ...................................................... 568 19-14 Timing of INTIE2 Interrupt Generation in Locked State (for (3))................................................................... 569 19-15 Example of Broadcasting Communication Flag Operation........................................................................... 573 19-16 Configuration of Interrupt Control Block ....................................................................................................... 584 19-17 Master Transmission .................................................................................................................................... 588 19-18 Master Reception ......................................................................................................................................... 590 19-19 Slave Transmission ...................................................................................................................................... 592 19-20 Slave Reception ........................................................................................................................................... 594 19-21 Master Transmission (Interval of Interrupt Occurrence) ............................................................................... 596 19-22 Master Reception (Interval of Interrupt Occurrence) .................................................................................... 597 19-23 Slave Transmission (Interval of Interrupt Occurrence) ................................................................................. 598 19-24 Slave Reception (Interval of Interrupt Occurrence) ...................................................................................... 599 A-1 100-Pin Plastic LQFP (Fine Pitch) (14 x 14) ................................................................................................ 642 A-2 100-Pin Plastic QFP (14 x 20)...................................................................................................................... 643 User's Manual U13850EJ6V0UD 25 LIST OF TABLES (1/3) Table No. Title Page 1-1 Product Lineup of V850/SB1 ..........................................................................................................................30 1-2 Product Lineup of V850/SB2 ..........................................................................................................................31 2-1 Pin I/O Buffer Power Supplies ........................................................................................................................73 2-2 Differences in Pins Between V850/SB1 and V850/SB2 .................................................................................73 2-3 Operating States of Pins in Each Operating Mode .........................................................................................80 3-1 Program Registers..........................................................................................................................................98 3-2 System Register Numbers ..............................................................................................................................99 3-3 Interrupt/Exception Table..............................................................................................................................109 4-1 Bus Control Pins ...........................................................................................................................................128 4-2 Number of Access Clocks.............................................................................................................................129 4-3 Bus Priority ...................................................................................................................................................144 5-1 Interrupt Source List .....................................................................................................................................147 5-2 Interrupt Control Register (xxICn).................................................................................................................164 5-3 Priorities of Interrupts and Exceptions ..........................................................................................................174 5-4 Description of Key Return Detection Pin ......................................................................................................180 6-1 Operating Statuses in HALT Mode ...............................................................................................................190 6-2 Operating Statuses in IDLE Mode ................................................................................................................192 6-3 Operating Statuses in Software STOP Mode ...............................................................................................194 7-1 Configuration of Timers 0 and 1 ...................................................................................................................202 7-2 Valid Edge of TIn0 Pin and Capture Trigger of CRn0...................................................................................203 7-3 Valid Edge of TIn1 Pin and Capture Trigger of CRn0...................................................................................203 7-4 TIn0 Pin Valid Edge and CRn1 Capture Trigger...........................................................................................204 7-5 Configuration of Timers 2 to 7 ......................................................................................................................235 8-1 Interval Time of Interval Timer ......................................................................................................................254 8-2 Configuration of Watch Timer .......................................................................................................................254 8-3 Interval Time of Interval Timer ......................................................................................................................258 9-1 Inadvertent Program Loop Detection Time of Watchdog Timer....................................................................261 9-2 Interval Time of Interval Timer ......................................................................................................................261 9-3 Configuration of Watchdog Timer .................................................................................................................262 9-4 Inadvertent Program Loop Detection Time of Watchdog Timer....................................................................265 9-5 Interval Time of Interval Timer ......................................................................................................................266 10-1 Configuration of CSIn ...................................................................................................................................269 10-2 Configuration of I Cn.....................................................................................................................................278 10-3 Selection Clock Setting.................................................................................................................................290 26 2 User's Manual U13850EJ6V0UD LIST OF TABLES (2/3) Table No. Title Page 10-4 INTIICn Generation Timing and Wait Control............................................................................................... 317 10-5 Extension Code Bit Definitions ..................................................................................................................... 319 10-6 Status During Arbitration and Interrupt Request Generation Timing ............................................................ 320 10-7 Wait Periods ................................................................................................................................................. 321 10-8 Configuration of I Cn..................................................................................................................................... 337 2 10-9 Selection Clock Setting ................................................................................................................................ 351 10-10 INTIICn Generation Timing and Wait Control............................................................................................... 378 10-11 Extension Code Bit Definitions ..................................................................................................................... 380 10-12 Status During Arbitration and Interrupt Request Generation Timing ............................................................ 381 10-13 Wait Periods ................................................................................................................................................. 383 10-14 Wait Time ..................................................................................................................................................... 386 10-15 Configuration of UARTn ............................................................................................................................... 399 10-16 Relationship Between Main Clock and Baud Rate ....................................................................................... 411 10-17 Receive Error Causes .................................................................................................................................. 417 10-18 Configuration of CSI4 ................................................................................................................................... 419 11-1 Configuration of A/D Converter .................................................................................................................... 433 12-1 Internal RAM Area Usable in DMA ............................................................................................................... 454 13-1 Configuration of RTO.................................................................................................................................... 467 13-2 Operation When Real-Time Output Buffer Registers Are Manipulated ........................................................ 468 13-3 Operation Mode and Output Trigger of Real-Time Output Port.................................................................... 470 14-1 Pin I/O Buffer Power Supplies ...................................................................................................................... 474 14-2 Port 0 Alternate Function Pins...................................................................................................................... 475 14-3 Port 1 Alternate Function Pins...................................................................................................................... 479 14-4 Port 2 Alternate Function Pins...................................................................................................................... 483 14-5 Port 3 Alternate Function Pins...................................................................................................................... 488 14-6 Alternate Function Pins of Ports 4 and 5 ...................................................................................................... 492 14-7 Port 6 Alternate Function Pins...................................................................................................................... 495 14-8 Alternate Function Pins of Ports 7 and 8 ...................................................................................................... 498 14-9 Port 9 Alternate Function Pins...................................................................................................................... 500 14-10 Port 10 Alternate Function Pins.................................................................................................................... 503 14-11 Port 11 Alternate Function Pins.................................................................................................................... 507 14-12 Setting When Port Pin Is Used as Alternate Function .................................................................................. 511 18-1 Table for Wiring of V850/SB1 and V850/SB2 Flash Writing Adapter (FA-100GC-8EU)............................... 527 18-2 Table for Wiring of V850/SB1 and V850/SB2 Flash Writing Adapter (FA-100GF-3BA) ............................... 529 18-3 Signal Generation of Dedicated Flash Programmer (PG-FP3)..................................................................... 532 18-4 Pins Used in Serial Interfaces ...................................................................................................................... 533 18-5 List of Communication Modes ...................................................................................................................... 539 18-6 Flash Memory Control Command................................................................................................................. 540 User's Manual U13850EJ6V0UD 27 LIST OF TABLES (3/3) Table No. Title Page 18-7 Response Command ....................................................................................................................................540 19-1 Transfer Rate and Maximum Number of Transfer Bytes in Communication Mode 1....................................542 19-2 Contents of Control Bits................................................................................................................................547 19-3 Control Field for Locked Slave Unit ..............................................................................................................548 19-4 Control Field for Unlocked Slave Unit...........................................................................................................548 19-5 Acknowledge Signal Output Condition of Control Field ................................................................................549 19-6 Contents of Telegraph Length Bit .................................................................................................................550 19-7 Internal Registers of IEBus Controller ..........................................................................................................560 19-8 Reset Conditions of Flags in ISR Register ...................................................................................................575 19-9 Interrupt Source List .....................................................................................................................................585 19-10 Communication Error Source Processing List ..............................................................................................586 22-1 Surface Mounting Type Soldering Conditions ..............................................................................................637 C-1 Symbols in Operand Description ..................................................................................................................651 C-2 Symbols Used for Opcode............................................................................................................................652 C-3 Symbols Used for Operation Description......................................................................................................652 C-4 Symbols Used for Flag Operation.................................................................................................................653 C-5 Condition Codes ...........................................................................................................................................653 28 User's Manual U13850EJ6V0UD CHAPTER 1 INTRODUCTION The V850/SB1 and V850/SB2 are products in the NEC Electronics V850 Series of single-chip microcontrollers designed for low power operation. 1.1 General The V850/SB1 and V850/SB2 are 32-bit single-chip microcontrollers that include the V850 Series CPU core, and peripheral functions such as ROM/RAM, a timer/counter, a serial interface, an A/D converter, a timer, and DMA controller. Based on the V850/SA1TM, the V850/SB1 and V850/SB2 feature various additions, including 3 to 5 V I/O interface support, and ROM correction. For V850/SB2, based on the V850/SB1TM, the peripheral functions of automobile LAN (IEBusTM (Inter Equipment BusTM)) are added. In addition to high real-time response characteristics and 1-clock-pitch basic instructions, the V850/SB1 and V850/SB2 have multiply, saturation operation, and bit manipulation instructions realized with a hardware multiplier for digital servo control. Moreover, as a real-time control system, the V850/SB1 and V850/SB2 enable the realization of extremely high cost-performance for applications that require low power consumption, such as audio equipment, car audio systems, and VCRs. Table 1-1 shows the outlines of the V850/SB1 and V850/SB2 product lineup. User's Manual U13850EJ6V0UD 29 CHAPTER 1 INTRODUCTION Table 1-1. Product Lineup of V850/SB1 Product Name Commercial Name V850/SB1 Part Number On-Chip I2C PD703031A No PD703031AY Yes PD703033A No PD70F3033A PD703033AY Yes No Yes No PD703031BY Yes PD703033B No PD70F3033B Yes No Yes 30 256 KB 16 KB 100-pin QFP (14 x 20)/ 100-pin LQFP (14 x 14) 512 KB 24 KB 100-pin QFP (14 x 20) Mask ROM 128 KB 8 KB 100-pin QFP (14 x 20)/ 100-pin LQFP (14 x 14) Mask ROM 256 KB 16 KB 100-pin QFP (14 x 20)/ 100-pin LQFP (14 x 14) 384 KB 24 KB 100-pin QFP (14 x 20)/ 100-pin LQFP (14 x 14) 512 KB 24 KB 100-pin QFP (14 x 20) Mask ROM Mask ROM Mask ROM Mask ROM Mask ROM Mask ROM Flash memory No PD70F3032B PD70F3032BY Mask ROM Flash memory PD70F3030BY PD703032BY 100-pin QFP (14 x 20)/ 100-pin LQFP (14 x 14) Flash memory PD70F3030B PD703032B 12 KB Flash memory PD70F3033BY PD703030BY 128 KB Flash memory PD703031B PD703030B Mask ROM Flash memory PD70F3032AY PD703033BY Size Flash memory PD70F3032A PD703032AY Package Type Flash memory PD70F3033AY PD703032A RAM Size ROM Mask ROM Flash memory Yes Mask ROM Flash memory User's Manual U13850EJ6V0UD On-Chip IEBus No CHAPTER 1 INTRODUCTION Table 1-2. Product Lineup of V850/SB2 Product Name Commercial Name V850/SB2 Part Number On-Chip I2C PD703034A No PD703034AY Yes PD703035A No PD70F3035A PD703035AY Yes No Yes No PD703034BY Yes PD703035B No PD70F3035B Yes No Yes 256 KB 16 KB 100-pin QFP (14 x 20)/ 100-pin LQFP (14 x 14) 512 KB 24 KB 100-pin QFP (14 x 20) Mask ROM 128 KB 8 KB 100-pin QFP (14 x 20)/ 100-pin LQFP (14 x 14) Mask ROM 256 KB 16 KB 100-pin QFP (14 x 20)/ 100-pin LQFP (14 x 14) 384 KB 24 KB 100-pin QFP (14 x 20)/ 100-pin LQFP (14 x 14) 512 KB 24 KB 100-pin QFP (14 x 20) Yes Mask ROM Mask ROM Mask ROM Mask ROM Mask ROM Mask ROM Flash memory No PD70F3037H PD70F3037HY Mask ROM Flash memory PD70F3036HY PD703037HY 100-pin QFP (14 x 20)/ 100-pin LQFP (14 x 14) Flash memory PD70F3036H PD703037H 12 KB Flash memory PD70F3035BY PD703036HY 128 KB Flash memory PD703034B PD703036H Mask ROM Flash memory PD70F3037AY PD703035BY Size On-Chip IEBus Flash memory PD70F3037A PD703037AY Package Type Flash memory PD70F3035AY PD703037A RAM Size ROM Mask ROM Flash memory Yes Mask ROM Flash memory The part numbers of the V850/SB1 and V850/SB2 are described as follows in this manual. * A versions A versions of the V850/SB1: PD703031A, 703031AY, 703032A, 703032AY, 703033A, 703033AY, 703037A, 703037AY, 70F3032A, 70F3032AY, 70F3033A, 70F3033AY A versions of the V850/SB2: PD703034A, 703034AY, 703035A, 703035AY, 70F3035A, 70F3035AY, 70F3037A, 70F3037AY * B versions, H versions B versions of the V850/SB1: PD703030B, 703030BY, 703031B, 703031BY, 703032B, 703032BY, 703033B, 703033BY, 70F3030B, 70F3030BY, 70F3032B, 70F3032BY, 70F3033B, 70F3033BY B and H versions of the V850/SB2: PD703034B, 703034BY, 703035B, 703035BY, 703036H, 703036HY, 703037H, 703037HY, 70F3035B, 70F3035BY, 70F3036H, 70F3036HY, 70F3037H, 70F3037HY User's Manual U13850EJ6V0UD 31 CHAPTER 1 INTRODUCTION * Flash memory versions PD70F3030B, 70F3030BY, 70F3032A, 70F3032AY, 70F3032B, Flash memory versions of the V850/SB1: 70F3032BY, 70F3033A, 70F3033AY, 70F3033B, 70F3033BY Flash memory versions of the V850/SB2: PD70F3035A, 70F3035AY, 70F3035B, 70F3035BY, 70F3036H, 70F3036HY, 70F3037A, 70F3037AY, 70F3037H, 70F3037HY * Mask ROM versions Mask ROM versions of the V850/SB1: PD703030B, 703030BY, 703031A, 703031AY, 703031B, 703031BY, 703032A, 703032AY, 703032B, 703032BY, 703033A, 703033AY, 703033B, 703033BY Mask ROM versions of the V850/SB2: PD703034A, 703034AY, 703034B, 703034BY, 703035A, 703035AY, 703035B, 703035BY, 703036H, 703036HY, 703037A, 703037AY, 703037H, 703037HY * Y versions (with on-chip I C) 2 Y versions of the V850/SB1 (with on-chip I C): PD703030BY, 703031AY, 703031BY, 703032AY, 703032BY, 2 703033AY, 703033BY, 70F3030BY, 70F3032AY, 70F3032BY, 70F3033AY, 70F3033BY Y versions of the V850/SB2 (with on-chip I C): PD703034AY, 703034BY, 703035AY, 703035BY, 703036HY, 2 703037AY, 703037HY, 70F3035AY, 70F3035BY, 70F3036HY, 70F3037AY, 70F3037BY 32 User's Manual U13850EJ6V0UD CHAPTER 1 INTRODUCTION 1.2 V850/SB1 (A Versions) 1.2.1 Features (V850/SB1 (A versions)) { Number of instructions: 74 { Minimum instruction execution time 50 ns (operating at 20 MHz, external power supply 5 V, regulator output 3.3 V) { General-purpose registers { Instruction set 32 bits x 32 registers Signed multiplication (16 x 16 32): 100 ns (operating at 20 MHz) (able to execute instructions in parallel continuously without creating any register hazards). Saturation operations (overflow and underflow detection functions are included) 32-bit shift instruction: 1 clock Bit manipulation instructions Load/store instructions with long/short format { Memory space 16 MB of linear address space (for programs and data) External expandability: expandable to 4 MB Memory block allocation function: 2 MB per block Programmable wait function Idle state insertion function { External bus interface 16-bit data bus (address/data multiplex) Address bus: separate output enabled 3 V to 5 V interface enabled Bus hold function External wait function { Internal memory PD703031A, 703031AY (mask ROM: 128 KB/RAM: 12 KB) PD703033A, 703033AY (mask ROM: 256 KB/RAM: 16 KB) PD703032A, 703032AY (mask ROM: 512 KB/RAM: 24 KB) PD70F3033A, 70F3033AY (flash memory: 256 KB/RAM: 16 KB) PD70F3032A, 70F3032AY (flash memory: 512 KB/RAM: 24 KB) { Interrupts and exceptions Non-maskable interrupts: 2 sources Maskable interrupts: 37 sources (PD703031A, 703032A, 703033A, 70F3032A, 70F3033A) 38 sources (PD703031AY, 703032AY, 703033AY, 70F3032AY, 70F3033AY) Software exceptions: 32 sources Exception trap: 1 source { I/O lines Total: 83 (12 input ports and 71 I/O ports) 3 V to 5 V interface enabled { Timer/counter 16-bit timer: 2 channels (PWM output) 8-bit timer: 6 channels (4 PWM outputs, cascade connection enabled) { Watch timer When operating under subclock or main clock: 1 channel Operation using the subclock or main clock is also possible in the IDLE mode. { Watchdog timer 1 channel User's Manual U13850EJ6V0UD 33 CHAPTER 1 { Serial interface (SIO) INTRODUCTION Asynchronous serial interface (UART) Clocked serial interface (CSI) I C bus interface (I C) (only for PD703031AY, 703032AY, 703033AY, 70F3032AY, 2 2 and 70F3033AY) 8-/16-bit variable-length serial interface CSI/UART: 2 channels 2 CSI/I C: 2 channels CSI (8-/16-bit valuable): 1 channel Dedicated baud rate generator: 3 channels { A/D converter 10-bit resolution: 12 channels { DMA controller Internal RAM on-chip peripheral I/O: 6 channels { Real-time output port (RTP) 8 bits x 1 channel or 4 bits x 2 channels { ROM correction Modifiable 4 points { Regulator 4.0 V to 5.5 V input internal 3.3 V { Key return function 4 to 8 selecting enabled, falling edge fixed { Clock generator During main clock or subclock operation { Power-saving functions HALT/IDLE/STOP modes { Package 100-pin plastic LQFP (fine pitch, 14 x 14) 5-level CPU clock (including sub operations) 100-pin plastic QFP (14 x 20) { CMOS structure All static circuits 1.2.2 Application fields (V850/SB1 (A versions)) AV equipment Example: Audio, car audio equipment, VCR, and TV. 34 User's Manual U13850EJ6V0UD CHAPTER 1 INTRODUCTION 1.2.3 Ordering information (V850/SB1 (A versions)) Part Number Package Internal ROM PD703031AGC-xxx-8EU 100-pin plastic LQFP (fine pitch) (14 x 14) Mask ROM (128 KB) PD703031AGF-xxx-3BA 100-pin plastic QFP (14 x 20) Mask ROM (128 KB) PD703031AYGC-xxx-8EU 100-pin plastic LQFP (fine pitch) (14 x 14) Mask ROM (128 KB) PD703031AYGF-xxx-3BA 100-pin plastic QFP (14 x 20) Mask ROM (128 KB) PD703033AGC-xxx-8EU 100-pin plastic LQFP (fine pitch) (14 x 14) Mask ROM (256 KB) PD703033AGF-xxx-3BA 100-pin plastic QFP (14 x 20) Mask ROM (256 KB) PD703033AYGC-xxx-8EU 100-pin plastic LQFP (fine pitch) (14 x 14) Mask ROM (256 KB) PD703033AYGF-xxx-3BA 100-pin plastic QFP (14 x 20) Mask ROM (256 KB) PD703032AGF-xxx-3BA 100-pin plastic QFP (14 x 20) Mask ROM (512 KB) PD703032AYGF-xxx-3BA 100-pin plastic QFP (14 x 20) Mask ROM (512 KB) PD70F3033AGC-8EU 100-pin plastic LQFP (fine pitch) (14 x 14) Flash memory (256 KB) PD70F3033AGF-3BA 100-pin plastic QFP (14 x 20) Flash memory (256 KB) PD70F3033AYGC-8EU 100-pin plastic LQFP (fine pitch) (14 x 14) Flash memory (256 KB) PD70F3033AYGF-3BA 100-pin plastic QFP (14 x 20) Flash memory (256 KB) PD70F3032AGF-3BA 100-pin plastic QFP (14 x 20) Flash memory (512 KB) PD70F3032AYGF-3BA 100-pin plastic QFP (14 x 20) Flash memory (512 KB) Remarks 1. xxx indicates ROM code suffix. 2. ROMless devices are not provided. User's Manual U13850EJ6V0UD 35 CHAPTER 1 INTRODUCTION 1.2.4 Pin configuration (top view) (V850/SB1 (A versions)) 100-pin plastic LQFP (fine pitch) (14 x 14) * PD703031AGC-xxx-8EU * PD70F3033AGC-8EU * PD703031AYGC-xxx-8EU * PD70F3033AYGC-8EU * PD703033AGC-xxx-8EU 100 99 98 97 96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81 80 79 78 77 76 Note 2 P20/SI2/SDA1 P15/SCK1/ASCK0 P14/SO1/TXD0 P13/SI1/RXD0 Note 2 P12/SCK0/SCL0 P11/SO0 Note 2 P10/SI0/SDA0 P07/INTP6 P06/INTP5/RTPTRG P05/INTP4/ADTRG P04/INTP3 P03/INTP2 P02/INTP1 P01/INTP0 P00/NMI P83/ANI11 P82/ANI10 P81/ANI9 P80/ANI8 P77/ANI7 P76/ANI6 P75/ANI5 P74/ANI4 P73/ANI3 P72/ANI2 * PD703033AYGC-xxx-8EU 1 2 3 4 5 6 7 8 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51 9 10 11 12 13 14 15 16 17 18 19 P71/ANI1 P70/ANI0 AVREF AVSS AVDD P65/A21 P64/A20 P63/A19 P62/A18 P61/A17 P60/A16 P57/AD15 P56/AD14 P55/AD13 P54/AD12 P53/AD11 P52/AD10 P51/AD9 P50/AD8 BVSS BVDD P47/AD7 P46/AD6 P45/AD5 P44/AD4 P107/RTP7/KR7/A12 P110/WAIT/A1 P111/A2 P112/A3 P113/A4 RESET XT1 XT2 REGC X2 X1 VSS VDD CLKOUT P90/LBEN/WRL P91/UBEN P92/R/W/WRH P93/DSTB/RD P94/ASTB P95/HLDAK P96/HLDRQ P40/AD0 P41/AD1 P42/AD2 P43/AD3 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 20 21 22 23 24 25 26 27 28 P21/SO2 Note 2 P22/SCK2/SCL1 P23/RXD1/SI3 P24/TXD1/SO3 P25/ASCK1/SCK3 EVDD EVSS P26/TI2/TO2 P27/TI3/TO3 P30/TI00 P31/TI01 P32/TI10/SI4 P33/TI11/SO4 P34/TO0/A13/SCK4 P35/TO1/A14 P36/TI4/TO4/A15 P37/TI5/TO5 Note 1 IC/VPP P100/RTP0/KR0/A5 P101/RTP1/KR1/A6 P102/RTP2/KR2/A7 P103/RTP3/KR3/A8 P104/RTP4/KR4/A9 P105/RTP5/KR5/A10 P106/RTP6/KR6/A11 Notes 1. IC (PD703031A, 703031AY, 703033A, 703033AY): Connect directly to VSS. VPP (PD70F3033A, 70F3033AY): Connect to VSS in normal operation mode. 2. 36 SCL0, SCL1, SDA0, and SDA1 are available only in the PD703031AY, 703033AY, and 70F3033AY. User's Manual U13850EJ6V0UD CHAPTER 1 INTRODUCTION 100-pin plastic QFP (14 x 20) * PD703033AGF-xxx-3BA * PD70F3033AGF-3BA * PD703031AYGF-xxx-3BA * PD703033AYGF-xxx-3BA * PD70F3033AYGF-3BA * PD703032AGF-xxx-3BA * PD70F3032AGF-3BA * PD703032AYGF-xxx-3BA * PD70F3032AYGF-3BA 100 99 98 97 96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81 P13/SI1/RXD0 P12/SCK0/SCL0Note 2 P11/SO0 P10/SI0/SDA0Note 2 P07/INTP6 P06/INTP5/RTPTRG P05/INTP4/ADTRG P04/INTP3 P03/INTP2 P02/INTP1 P01/INTP0 P00/NMI P83/ANI11 P82/ANI10 P81/ANI9 P80/ANI8 P77/ANI7 P76/ANI6 P75/ANI5 P74/ANI4 * PD703031AGF-xxx-3BA P14/SO1/TXD0 P15/SCK1/ASCK0 P20/SI2/SDA1Note 2 P21/SO2 P22/SCK2/SCL1Note 2 P23/RXD1/SI3 P24/TXD1/SO3 P25/ASCK1/SCK3 EVDD EVSS P26/TI2/TO2 P27/TI3/TO3 P30/TI00 P31/TI01 P32/TI10/SI4 P33/TI11/SO4 P34/TO0/A13/SCK4 P35/TO1/A14 P36/TI4/TO4/A15 P37/TI5/TO5 80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51 P73/ANI3 P72/ANI2 P71/ANI1 P70/ANI0 AVREF AVSS AVDD P65/A21 P64/A20 P63/A19 P62/A18 P61/A17 P60/A16 P57/AD15 P56/AD14 P55/AD13 P54/AD12 P53/AD11 P52/AD10 P51/AD9 P50/AD8 BVSS BVDD P47/AD7 P46/AD6 P45/AD5 P44/AD4 P43/AD3 P42/AD2 P41/AD1 P111/A2 P112/A3 P113/A4 RESET XT1 XT2 REGC X2 X1 VSS VDD CLKOUT P90/LBEN/WRL P91/UBEN P92/R/W/WRH P93/DSTB/RD P94/ASTB P95/HLDAK P96/HLDRQ P40/AD0 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 IC/VPPNote 1 P100/RTP0/KR0/A5 P101/RTP1/KR1/A6 P102/RTP2/KR2/A7 P103/RTP3/KR3/A8 P104/RTP4/KR4/A9 P105/RTP5/KR5/A10 P106/RTP6/KR6/A11 P107/RTP7/KR7/A12 P110/WAIT/A1 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Notes 1. IC (PD703031A, 703031AY, 703032A, 703032AY, 703033A, 703033AY): Connect directly to VSS. VPP (PD70F3032A, 70F3032AY, 70F3033A, 70F3033AY): Connect to VSS in normal operation mode. 2. SCL0, SCL1, SDA0, and SDA1 are available only in the PD703031AY, 703032AY, 703033AY, 70F3032AY, and 70F3033AY. User's Manual U13850EJ6V0UD 37 CHAPTER 1 INTRODUCTION Pin names (V850/SB1 (A versions)) A1 to A21: Address bus P70 to P77: Port 7 AD0 to AD15: Address/data bus P80 to P83: Port 8 ADTRG: A/D trigger input P90 to P96: Port 9 ANI0 to ANI11: Analog input P100 to P107: Port 10 ASCK0, ASCK1: Asynchronous serial clock P110 to P113: Port 11 ASTB: Address strobe RD: Read AVDD: Analog VDD REGC: Regulator control AVREF: Analog reference voltage RESET: Reset AVSS: Analog VSS RTP0 to RTP7: Real-time output port BVDD: Power supply for bus interface RTPTRG: RTP trigger BVSS: Ground for bus interface R/W: Read/write status CLKOUT: Clock output RXD0, RXD1: Receive data DSTB: Data strobe SCK0 to SCK4: Serial clock EVDD: Power supply for port SCL0, SCL1: Serial clock EVSS: Ground for port SDA0, SDA1: Serial data HLDAK: Hold acknowledge SI0 to SI4: Serial input HLDRQ: Hold request SO0 to SO4: Serial output IC: Internally connected TI00, TI01, TI10, INTP0 to INTP6: Interrupt request from peripherals TI11, TI2 to TI5: Timer input KR0 to KR7: Key return TO0 to TO5: Timer output LBEN: Lower byte enable TXD0,TXD1: Transmit data NMI: Non-maskable interrupt request UBEN: Upper byte enable P00 to P07: Port 0 VDD: Power supply P10 to P15: Port 1 VPP: Programming power supply P20 to P27: Port 2 VSS: Ground P30 to P37: Port 3 WAIT: Wait P40 to P47: Port 4 WRH: Write strobe high level data P50 to P57: Port 5 WRL: Write strobe low level data P60 to P65: Port 6 X1, X2: Crystal for main clock XT1, XT2: Crystal for subclock 38 User's Manual U13850EJ6V0UD CHAPTER 1 INTRODUCTION 1.2.5 Function blocks (V850/SB1 (A versions)) (1) Internal block diagram ROM NMI CPU INTC INTP0 to INTP6 Note 1 TI00,TI01, TI10,TI11 Timer/counter TO0,TO1 TI2/TO2 TI3/TO3 TI4/TO4 TI5/TO5 16-bit timer: TM0, TM1 8-bit timer: TM2 to TM7 RAM SIO Note 2 SO0 SI0/SDA0Note 3 Note 3 SCK0/SCL0 CSI0/I2C0 Note 4 SO2 Note 3 SI2/SDA1 Note 3 SCK2/SCL1 CSI2/I2C1 Note 4 SO1/TXD0 SI1/RXD0 SCK1/ASCK0 PC ROM correction 32-bit barrel shifter Multiplier 16 x1632 System register HLDRQ (P96) HLDAK (P95) Instruction queue ASTB (P94) DSTB/RD (P93) R/W /WRH (P92) UBEN (P91) LBEN/WRL (P90) WAIT (P110) A1 to A12 (P100 to P107, P110 to P113) A13 to A15 (P34 to P36) BCU ALU General-purpose registers 32 bits x 32 A16 to A21 (P60 to P65) AD0 to AD15 (P40 to P47, P50 to P57) CSI1/UART0 Ports RTP SO3/TXD1 SI3/RXD1 SCK3/ASCK1 CSI3/UART1 SO4 SI4 SCK4 Variable length CSI4 CLKOUT A/D converter X1 3.3 V DMAC: 6 ch Regulator REGC Watch timer AVDD AVREF AVSS ANI0 to ANI11 ADTRG Key return KR0 to KR7 RTP0 to RTP7 RTPTRG P110 to P113 P100 to P107 P90 to P96 P80 to P83 P70 to P77 P60 to P65 P50 to P57 P40 to P47 P30 to P37 P20 to P27 P10 to P15 P00 to P07 CG Watchdog timer X2 XT1 XT2 RESET VDD VSS BVDD BVSS EVDD EVSS Note 5 VPP Note 6 IC Notes 1. PD703031A, 703031AY: 128 KB (mask ROM) PD703033A, 703033AY: 256 KB (mask ROM) PD703032A, 703032AY: 512 KB (mask ROM) PD70F3033A, 70F3033AY: 256 KB (flash memory) PD70F3032A, 70F3032AY: 512 KB (flash memory) 2. PD703031A, 703031AY: 12 KB PD703033A, 703033AY, 70F3033A, 70F3033AY: 16 KB PD703032A, 703032AY, 70F3032A, 70F3032AY: 3. 24 KB SDA0, SDA1, SCL0, and SCL1 pins are available only in the PD703031AY, 703032AY, 703033AY, 70F3032AY, and 70F3033AY. 4. I C function is available only in the PD703031AY, 703032AY, 703033AY, 70F3032AY, and 2 70F3033AY. 5. PD70F3032A, 70F3032AY, 70F3033A, 70F3033AY 6. PD703031A, 703031AY, 703032A, 703032AY, 703033A, 703033AY User's Manual U13850EJ6V0UD 39 CHAPTER 1 INTRODUCTION (2) Internal units (a) CPU The CPU uses five-stage pipeline control to enable single-clock execution of address calculations, arithmetic logic operations, data transfers, and almost all other instruction processing. Other dedicated on-chip hardware, such as the multiplier (16 bits x 16 bits 32 bits) and the barrel shifter (32 bits) help accelerate processing of complex instructions. (b) Bus control unit (BCU) The BCU starts a required external bus cycle based on the physical address obtained by the CPU. When an instruction is fetched from external memory space and the CPU does not send a bus cycle start request, the BCU generates a prefetch address and prefetches the instruction code. The prefetched instruction code is stored in an instruction queue. (c) ROM This consists of a mask ROM or flash memory mapped to the address space starting at 00000000H. The ROM capacity varies depending on the product. The ROM capacity of each product is shown below. PD703031A, 703031AY: 128 KB (mask ROM) PD703033A, 703033AY: 256 KB (mask ROM) PD70F3033A, 70F3033AY: 256 KB (flash memory) PD703032A, 703032AY: 512 KB (mask ROM) PD70F3032A, 70F3032AY: 512 KB (flash memory) ROM can be accessed by the CPU in one clock cycle during instruction fetch. (d) RAM The RAM capacity and mapping addresses vary depending on the product. The RAM capacity of each product is shown below. PD703031A, 703031AY: 12 KB (mapping starts at FFFFC000H) PD703033A, 703033AY, 70F3033A, 70F3033AY: 16 KB (mapping starts at FFFFB000H) PD703032A, 703032AY, 70F3032A, 70F3032AY: 24 KB (mapping starts at FFFF9000H) RAM can be accessed by the CPU in one clock cycle during data access. (e) Interrupt controller (INTC) This controller handles hardware interrupt requests (NMI, INTP0 to INTP6) from on-chip peripheral hardware and external hardware. Eight levels of interrupt priorities can be specified for these interrupt requests, and multiplexed servicing control can be performed for interrupt sources. (f) Clock generator (CG) The clock generator includes two types of oscillators; each for main clock (fXX) and for subclock (fXT), generates five types of clocks (fXX, fXX/2, fXX/4, fXX/8, and fXT), and supplies one of them as the operating clock for the CPU (fCPU). 40 User's Manual U13850EJ6V0UD CHAPTER 1 INTRODUCTION (g) Timer/counter A two-channel 16-bit timer/event counter, a four-channel 8-bit timer/event counter, and a two-channel 8bit interval timer are equipped, enabling measurement of pulse intervals and frequency as well as programmable pulse output. The two-channel 8-bit timer/event counter can be connected via a cascade to enable use as a 16-bit timer. The two-channel 8-bit interval timer can be connected via a cascade to enable to be used as a 16-bit timer. (h) Watch timer This timer counts the reference time period (0.5 seconds) for counting the clock (the 32.768 kHz subclock or the main clock). At the same time, the watch timer can be used as an interval timer for the main clock. (i) Watchdog timer A watchdog timer is equipped to detect inadvertent program loops, system abnormalities, etc. It can also be used as an interval timer. When used as a watchdog timer, it generates a non-maskable interrupt request (INTWDT) after an overflow occurs. When used as an interval timer, it generates a maskable interrupt request (INTWDTM) after an overflow occurs. (j) Serial interface (SIO) The V850/SB1 includes three kinds of serial interfaces: asynchronous serial interfaces (UART0, UART1), clocked serial interfaces (CSI0 to CSI3), and an 8-/16-bit variable-length serial interface (CSI4). 2 2 2 These plus the I C bus interfaces (I C0, I C1) comprise five channels. Two of these channels are 2 switchable between the UART and CSI and another two switchable between CSI and I C. For UART0 and UART1, data is transferred via the TXD0, TXD1, RXD0, and RXD1 pins. For CSI0 to CSI3, data is transferred via the SO0 to SO3, SI0 to SI3, and SCK0 to SCK3 pins. For CSI4, data is transferred via the SO4, SI4, and SCK4 pins. 2 2 For I C0 and I C1, data is transferred via the SDA0, SDA1, SCL0, and SCL1 pins. I C0 and I C1 are equipped only in the PD703031AY, 703032AY, 703033AY, 70F3032AY, and 2 2 70F3033AY. For UART and CSI4, a dedicated baud rate generator is equipped. (k) A/D converter This high-speed, high-resolution 10-bit A/D converter includes 12 analog input pins. Conversion uses the successive approximation method. (l) DMA controller A six-channel DMA controller is equipped. This controller transfers data between the internal RAM and on-chip peripheral I/O devices in response to interrupt requests sent by on-chip peripheral I/O. (m) Real-time output port (RTP) The RTP is a real-time output function that transfers preset 8-bit data to an output latch when an external trigger signal occurs or when there is a match signal in a timer compare register. It can also be used for 4-bit x 2 channels. User's Manual U13850EJ6V0UD 41 CHAPTER 1 INTRODUCTION (n) Ports As shown below, the following ports have general-purpose port functions and control pin functions. Port 42 I/O Port Function Generalpurpose port Control Function Port 0 8-bit I/O NMI, external interrupt, A/D converter trigger, RTP trigger Port 1 6-bit I/O Port 2 8-bit I/O Serial interface, timer I/O Port 3 8-bit I/O Timer I/O, external address bus, serial interface Port 4 8-bit I/O External address/data bus Port 5 8-bit I/O Port 6 6-bit I/O Port 7 8-bit input Port 8 4-bit input Port 9 7-bit I/O External bus interface control signal I/O Port 10 8-bit I/O Real-time output port, external address bus, key return input Port 11 4-bit I/O Wait control, external address bus Serial interface External address bus A/D converter analog input User's Manual U13850EJ6V0UD CHAPTER 1 INTRODUCTION 1.3 V850/SB1 (B Versions) 1.3.1 Features (V850/SB1 (B versions)) { Number of instructions: 74 { Minimum instruction execution time 50 ns (@ 20 MHz operation, external power supply 5 V, regulator output 3.3 V operation) { General-purpose registers 32 bits x 32 registers { Instruction set Signed multiplication (16 x 16 32): 100 ns (@ 20 MHz operation) (able to execute instructions in parallel continuously without creating any register hazards). Saturation operations (overflow and underflow detection functions are included) 32-bit shift instruction: 1 clock Bit manipulation instructions Load/store instructions with long/short format { Memory space 16 MB of linear address space (for programs and data) External expandability: expandable to 4 MB Memory block allocation function: 2 MB per block Programmable wait function Idle state insertion function { External bus interface 16-bit data bus (address/data multiplex) Address bus: separate output enabled 3 V to 5 V interface enabled Bus hold function External wait function { Internal memory PD703031B, 703031BY (mask ROM: 128 KB/RAM: 8 KB) PD703033B, 703033BY (mask ROM: 256 KB/RAM: 16 KB) PD703030B, 703030BY (mask ROM: 384 KB/RAM: 24 KB) PD703032B, 703032BY (mask ROM: 512 KB/RAM: 24 KB) PD70F3033B, 70F3033BY (flash memory: 256 KB/RAM: 16 KB) PD70F3030B, 70F3030BY (flash memory: 384 KB/RAM: 24 KB) PD70F3032B, 70F3032BY (flash memory: 512 KB/RAM: 24 KB) { Interrupts and exceptions Non-maskable interrupts: 2 sources Maskable interrupts: 37 sources (PD703030B, 703031B, 703032B, 703033B, 70F3030B, 70F3032B, 70F3033B) 38 sources (PD703030BY, 703031BY, 703032BY, 703033BY, 70F3030BY, 70F3032BY, 70F3033BY) Software exceptions: 32 sources Exception trap: 1 source { I/O lines Total: 83 (12 input ports and 71 I/O ports) { Timer/counter 16-bit timer: 2 channels (PWM output) 3 V to 5 V interface enabled 8-bit timer: 6 channels (4 PWM outputs, cascade connection enabled) { Watch timer When operating under subclock or main clock: 1 channel Operation using the subclock or main clock is also possible in the IDLE mode. { Watchdog timer 1 channel User's Manual U13850EJ6V0UD 43 CHAPTER 1 { Serial interface (SIO) INTRODUCTION Asynchronous serial interface (UART) Clocked serial interface (CSI) I C bus interface (I C) (only for PD703030BY, 703031BY, 703032BY, 703033BY, 2 2 70F3030BY, 70F3032BY, and 70F3033BY) 8-/16-bit variable-length serial interface CSI/UART: 2 channels 2 CSI/I C: 2 channels CSI (8-/16-bit valuable): 1 channel Dedicated baud rate generator: 3 channels { A/D converter 10-bit resolution: 12 channels { DMA controller Internal RAM on-chip peripheral I/O: 6 channels { Real-time output port (RTP) 8 bits x 1 channel or 4 bits x 2 channels { ROM correction Modifiable 4 points { Regulator 4.0 V to 5.5 V input internal 3.3 V { Key return function 4 to 8 selecting enabled, falling edge fixed { Clock generator During main clock or subclock operation { Power-saving functions HALT/IDLE/STOP modes { Package 100-pin plastic LQFP (fine pitch, 14 x 14) 5-level CPU clock (including sub operations) 100-pin plastic QFP (14 x 20) { CMOS structure All static circuits 1.3.2 Application fields (V850/SB1 (B versions)) AV equipment Example: Audio, car audio equipment, VCR, and TV. 44 User's Manual U13850EJ6V0UD CHAPTER 1 INTRODUCTION 1.3.3 Ordering information (V850/SB1 (B versions)) Part Number Package Internal ROM PD703031BGC-xxx-8EU 100-pin plastic LQFP (fine pitch) (14 x 14) Mask ROM (128 KB) PD703031BGF-xxx-3BA 100-pin plastic QFP (14 x 20) Mask ROM (128 KB) PD703031BYGC-xxx-8EU 100-pin plastic LQFP (fine pitch) (14 x 14) Mask ROM (128 KB) PD703031BYGF-xxx-3BA 100-pin plastic QFP (14 x 20) Mask ROM (128 KB) PD703033BGC-xxx-8EU 100-pin plastic LQFP (fine pitch) (14 x 14) Mask ROM (256 KB) PD703033BGF-xxx-3BA 100-pin plastic QFP (14 x 20) Mask ROM (256 KB) PD703033BYGC-xxx-8EU 100-pin plastic LQFP (fine pitch) (14 x 14) Mask ROM (256 KB) PD703033BYGF-xxx-3BA 100-pin plastic QFP (14 x 20) Mask ROM (256 KB) PD703030BGC-xxx-8EU 100-pin plastic LQFP (fine pitch) (14 x 14) Mask ROM (384 KB) PD703030BGF-xxx-3BA 100-pin plastic QFP (14 x 20) Mask ROM (384 KB) PD703030BYGC-xxx-8EU 100-pin plastic LQFP (fine pitch) (14 x 14) Mask ROM (384 KB) PD703030BYGF-xxx-3BA 100-pin plastic QFP (14 x 20) Mask ROM (384 KB) PD703032BGF-xxx-3BA 100-pin plastic QFP (14 x 20) Mask ROM (512 KB) PD703032BYGF-xxx-3BA 100-pin plastic QFP (14 x 20) Mask ROM (512 KB) PD70F3033BGC-8EU 100-pin plastic LQFP (fine pitch) (14 x 14) Flash memory (256 KB) PD70F3033BGF-3BA 100-pin plastic QFP (14 x 20) Flash memory (256 KB) PD70F3033BYGC-8EU 100-pin plastic LQFP (fine pitch) (14 x 14) Flash memory (256 KB) PD70F3033BYGF-3BA 100-pin plastic QFP (14 x 20) Flash memory (256 KB) PD70F3030BGC-8EU 100-pin plastic LQFP (fine pitch) (14 x 14) Flash memory (384 KB) PD70F3030BGF-3BA 100-pin plastic QFP (14 x 20) Flash memory (384 KB) PD70F3030BYGC-8EU 100-pin plastic LQFP (fine pitch) (14 x 14) Flash memory (384 KB) PD70F3030BYGF-3BA 100-pin plastic QFP (14 x 20) Flash memory (384 KB) PD70F3032BGF-3BA 100-pin plastic QFP (14 x 20) Flash memory (512 KB) PD70F3032BYGF-3BA 100-pin plastic QFP (14 x 20) Flash memory (512 KB) Remarks 1. xxx indicates ROM code suffix. 2. ROMless devices are not provided. User's Manual U13850EJ6V0UD 45 CHAPTER 1 INTRODUCTION 1.3.4 Pin configuration (top view) (V850/SB1 (B versions)) 100-pin plastic LQFP (fine pitch) (14 x 14) * PD703033BGC-xxx-8EU * PD70F3033BGC-8EU * PD703033BYGC-xxx-8EU * PD70F3033BYGC-8EU * PD703031BGC-xxx-8EU * PD70F3030BGC-8EU * PD703031BYGC-xxx-8EU * PD70F3030BYGC-8EU 100 99 98 97 96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81 80 79 78 77 76 Note 2 P20/SI2/SDA1 P15/SCK1/ASCK0 P14/SO1/TXD0 P13/SI1/RXD0 Note 2 P12/SCK0/SCL0 P11/SO0 Note 2 P10/SI0/SDA0 P07/INTP6 P06/INTP5/RTPTRG P05/INTP4/ADTRG P04/INTP3 P03/INTP2 P02/INTP1 P01/INTP0 P00/NMI P83/ANI11 P82/ANI10 P81/ANI9 P80/ANI8 P77/ANI7 P76/ANI6 P75/ANI5 P74/ANI4 P73/ANI3 P72/ANI2 * PD703030BGC-xxx-8EU * PD703030BYGC-xxx-8EU 1 2 3 4 5 6 7 8 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51 9 10 11 12 13 14 15 16 17 18 19 P71/ANI1 P70/ANI0 AVREF AVSS AVDD P65/A21 P64/A20 P63/A19 P62/A18 P61/A17 P60/A16 P57/AD15 P56/AD14 P55/AD13 P54/AD12 P53/AD11 P52/AD10 P51/AD9 P50/AD8 BVSS BVDD P47/AD7 P46/AD6 P45/AD5 P44/AD4 P107/RTP7/KR7/A12 P110/WAIT/A1 P111/A2 P112/A3 P113/A4 RESET XT1 XT2 REGC X2 X1 VSS VDD CLKOUT P90/LBEN/WRL P91/UBEN P92/R/W/WRH P93/DSTB/RD P94/ASTB P95/HLDAK P96/HLDRQ P40/AD0 P41/AD1 P42/AD2 P43/AD3 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 20 21 22 23 24 25 26 27 28 P21/SO2 Note 2 P22/SCK2/SCL1 P23/RXD1/SI3 P24/TXD1/SO3 P25/ASCK1/SCK3 EVDD EVSS P26/TI2/TO2 P27/TI3/TO3 P30/TI00 P31/TI01 P32/TI10/SI4 P33/TI11/SO4 P34/TO0/A13/SCK4 P35/TO1/A14 P36/TI4/TO4/A15 P37/TI5/TO5 Note 1 IC/VPP P100/RTP0/KR0/A5 P101/RTP1/KR1/A6 P102/RTP2/KR2/A7 P103/RTP3/KR3/A8 P104/RTP4/KR4/A9 P105/RTP5/KR5/A10 P106/RTP6/KR6/A11 Notes 1. IC (PD703030B, 703030BY, 703031B, 703031BY, 703033B, 703033BY): Connect directly to VSS. VPP (PD70F3030B, 70F3030BY, 70F3033B, 70F3033BY): Connect to VSS in normal operation mode. 2. SCL0, SCL1, SDA0, and SDA1 are available only in the 703030BY, PD703031BY, 703033BY, 70F3030BY, and 70F3033BY. 46 User's Manual U13850EJ6V0UD CHAPTER 1 INTRODUCTION 100-pin plastic QFP (14 x 20) * PD703032BGF-xxx-3BA * PD70F3030BYGF-3BA * PD703030BYGF-xxx-3BA * PD703032BYGF-xxx-3BA * PD70F3032BGF-3BA * PD703031BGF-xxx-3BA * PD703033BGF-xxx-3BA * PD70F3032BYGF-3BA * PD703031BYGF-xxx-3BA * PD703033BYGF-xxx-3BA * PD70F3033BGF-3BA * PD70F3030BGF-3BA * PD70F3033BYGF-3BA 100 99 98 97 96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81 P13/SI1/RXD0 P12/SCK0/SCL0Note 2 P11/SO0 P10/SI0/SDA0Note 2 P07/INTP6 P06/INTP5/RTPTRG P05/INTP4/ADTRG P04/INTP3 P03/INTP2 P02/INTP1 P01/INTP0 P00/NMI P83/ANI11 P82/ANI10 P81/ANI9 P80/ANI8 P77/ANI7 P76/ANI6 P75/ANI5 P74/ANI4 * PD703030BGF-xxx-3BA P14/SO1/TXD0 P15/SCK1/ASCK0 P20/SI2/SDA1Note 2 P21/SO2 P22/SCK2/SCL1Note 2 P23/RXD1/SI3 P24/TXD1/SO3 P25/ASCK1/SCK3 EVDD EVSS P26/TI2/TO2 P27/TI3/TO3 P30/TI00 P31/TI01 P32/TI10/SI4 P33/TI11/SO4 P34/TO0/A13/SCK4 P35/TO1/A14 P36/TI4/TO4/A15 P37/TI5/TO5 P73/ANI3 P72/ANI2 P71/ANI1 P70/ANI0 AVREF AVSS AVDD P65/A21 P64/A20 P63/A19 P62/A18 P61/A17 P60/A16 P57/AD15 P56/AD14 P55/AD13 P54/AD12 P53/AD11 P52/AD10 P51/AD9 P50/AD8 BVSS BVDD P47/AD7 P46/AD6 P45/AD5 P44/AD4 P43/AD3 P42/AD2 P41/AD1 P111/A2 P112/A3 P113/A4 RESET XT1 XT2 REGC X2 X1 VSS VDD CLKOUT P90/LBEN/WRL P91/UBEN P92/R/W/WRH P93/DSTB/RD P94/ASTB P95/HLDAK P96/HLDRQ P40/AD0 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 IC/VPPNote 1 P100/RTP0/KR0/A5 P101/RTP1/KR1/A6 P102/RTP2/KR2/A7 P103/RTP3/KR3/A8 P104/RTP4/KR4/A9 P105/RTP5/KR5/A10 P106/RTP6/KR6/A11 P107/RTP7/KR7/A12 P110/WAIT/A1 80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Notes 1. IC (PD703030B, 703030BY, 703031B, 703031BY, 703032B, 703032BY, 703033B, 703033BY): Connect directly to VSS. VPP (PD70F3030B, 70F3030BY, 70F3032B, 70F3032BY, 70F3033B, 70F3033BY): Connect to VSS in normal operation mode. 2. SCL0, SCL1, SDA0, and SDA1 are available only in the PD703030BY, 703031BY, 703032BY, 703033BY, 70F3030BY, 70F3032BY, and 70F3033BY. User's Manual U13850EJ6V0UD 47 CHAPTER 1 INTRODUCTION Pin names (V850/SB1 (B versions)) A1 to A21: Address bus P70 to P77: Port 7 AD0 to AD15: Address/data bus P80 to P83: Port 8 ADTRG: A/D trigger input P90 to P96: Port 9 ANI0 to ANI11: Analog input P100 to P107: Port 10 ASCK0, ASCK1: Asynchronous serial clock P110 to P113: Port 11 ASTB: Address strobe RD: Read AVDD: Analog VDD REGC: Regulator control AVREF: Analog reference voltage RESET: Reset AVSS: Analog VSS RTP0 to RTP7: Real-time output port BVDD: Power supply for bus interface RTPTRG: RTP trigger BVSS: Ground for bus interface R/W: Read/write status CLKOUT: Clock output RXD0, RXD1: Receive data DSTB: Data strobe SCK0 to SCK4: Serial clock EVDD: Power supply for port SCL0, SCL1: Serial clock EVSS: Ground for port SDA0, SDA1: Serial data HLDAK: Hold acknowledge SI0 to SI4: Serial input HLDRQ: Hold request SO0 to SO4: Serial output IC: Internally connected TI00, TI01, TI10, INTP0 to INTP6: Interrupt request from peripherals TI11, TI2 to TI5: Timer input KR0 to KR7: Key return TO0 to TO5: Timer output LBEN: Lower byte enable TXD0,TXD1: Transmit data NMI: Non-maskable interrupt request UBEN: Upper byte enable P00 to P07: Port 0 VDD: Power supply P10 to P15: Port 1 VPP: Programming power supply P20 to P27: Port 2 VSS: Ground P30 to P37: Port 3 WAIT: Wait P40 to P47: Port 4 WRH: Write strobe high level data P50 to P57: Port 5 WRL: Write strobe low level data P60 to P65: Port 6 X1, X2: Crystal for main clock XT1, XT2: Crystal for subclock 48 User's Manual U13850EJ6V0UD CHAPTER 1 INTRODUCTION 1.3.5 Function blocks (V850/SB1 (B versions)) (1) Internal block diagram TO0,TO1 TI2/TO2 TI3/TO3 TI4/TO4 TI5/TO5 Note 1 Timer/counter 16-bit timer: TM0, TM1 8-bit timer: TM2 to TM7 RAM SIO Note 2 SO0 SI0/SDA0Note 3 Note 3 SCK0/SCL0 CSI0/I2C0 Note 4 SO2 Note 3 SI2/SDA1 Note 3 SCK2/SCL1 CSI2/I2C1 Note 4 SO1/TXD0 SI1/RXD0 SCK1/ASCK0 32-bit barrel shifter Multiplier 16 x1632 System register HLDRQ (P96) HLDAK (P95) Instruction queue ASTB (P94) DSTB/RD (P93) R/W /WRH (P92) UBEN (P91) LBEN/WRL (P90) WAIT (P110) A1 to A12 (P100 to P107, P110 to P113) A13 to A15 (P34 to P36) BCU ALU General-purpose registers 32 bits x 32 A16 to A21 (P60 to P65) AD0 to AD15 (P40 to P47, P50 to P57) CSI1/UART0 Ports RTP SO3/TXD1 SI3/RXD1 SCK3/ASCK1 CSI3/UART1 SO4 SI4 SCK4 Variable length CSI4 KR0 to KR7 PC ROM correction CLKOUT A/D converter X1 CG Key return 3.3 V DMAC: 6 ch REGC Watch timer Watchdog timer AVDD AVREF AVSS ANI0 to ANI11 ADTRG TI00,TI01, TI10,TI11 CPU RTP0 to RTP7 RTPTRG INTP0 to INTP6 ROM INTC P110 to P113 P100 to P107 P90 to P96 P80 to P83 P70 to P77 P60 to P65 P50 to P57 P40 to P47 P30 to P37 P20 to P27 P10 to P15 P00 to P07 NMI Regulator X2 XT1 XT2 RESET VDD VSS BVDD BVSS EVDD EVSS Note 5 VPP Note 6 IC Notes 1. 2. 3. 4. 5. 6. 128 KB (mask ROM) PD703031B, 703031BY: 256 KB (mask ROM) PD703033B, 703033BY: 384 K (mask ROM) PD703030B, 703030BY: 512 K (mask ROM) PD703032B, 703032BY: PD70F3033B, 70F3033BY: 256 K (flash memory) PD70F3030B, 70F3030BY: 384 K (flash memory) PD70F3032B, 70F3032BY: 512 K (flash memory) 8 KB PD703031B, 703031BY: PD703033B, 703033BY, 70F3033B, 70F3033BY: 16 KB 24 KB PD703030B, 703030BY, 703032B, 703032BY,: 70F3030B, 70F3030BY, 70F3032B, 70F3032BY SDA0, SDA1, SCL0, and SCL1 pins are available only in the PD703030BY, 703031BY, 703032BY, 703033BY, 70F3032BY, 70F3030BY, and 70F3033BY 2 I C function is available only in the PD703030BY, 703031BY, 703032BY, 703033BY, 70F3030BY, 70F3032BY, and 70F3033BY PD70F3030B, 70F3030BY, 70F3032B, 70F3032BY, 70F3033B, 70F3033BY PD703030B, 703030BY, 703031B, 703031BY, 703032B, 703032BY, 703033B, 703033BY User's Manual U13850EJ6V0UD 49 CHAPTER 1 INTRODUCTION (2) Internal units (a) CPU The CPU uses five-stage pipeline control to enable single-clock execution of address calculations, arithmetic logic operations, data transfers, and almost all other instruction processing. Other dedicated on-chip hardware, such as the multiplier (16 bits x 16 bits 32 bits) and the barrel shifter (32 bits) help accelerate processing of complex instructions. (b) Bus control unit (BCU) The BCU starts a required external bus cycle based on the physical address obtained by the CPU. When an instruction is fetched from external memory space and the CPU does not send a bus cycle start request, the BCU generates a prefetch address and prefetches the instruction code. The prefetched instruction code is stored in an instruction queue. (c) ROM This consists of a mask ROM or flash memory mapped to the address space starting at 00000000H. The ROM capacity varies depending on the product. The ROM capacity of each product is shown below. PD703031B, 703031BY: 128 KB (mask ROM) PD703033B, 703033BY: 256 KB (mask ROM) PD70F3033B, 70F3033BY: 256 KB (flash memory) PD703030B, 703030BY: 384 KB (mask ROM) PD70F3030B, 70F3030BY: 384 KB (flash memory) PD703032B, 703032BY: 512 KB (mask ROM) PD70F3032B, 70F3032BY: 512 KB (flash memory) ROM can be accessed by the CPU in one clock cycle during instruction fetch. (d) RAM The RAM capacity and mapping addresses vary depending on the product. The RAM capacity of each product is shown below. PD703031B, 703031BY: 8 KB (mapping starts at FFFFD000H) PD703033B, 703033BY, 70F3033B, 70F3033BY: 16 KB (mapping starts at FFFFB000H) PD703030B, 703030BY, 70F3030B, 70F3030BY, 703032B, 703032BY, 70F3032B, 70F3032BY: 24 KB (mapping starts at FFFF9000H) RAM can be accessed by the CPU in one clock cycle during data access. (e) Interrupt controller (INTC) This controller handles hardware interrupt requests (NMI, INTP0 to INTP6) from on-chip peripheral hardware and external hardware. Eight levels of interrupt priorities can be specified for these interrupt requests, and multiplexed servicing control can be performed for interrupt sources. 50 User's Manual U13850EJ6V0UD CHAPTER 1 INTRODUCTION (f) Clock generator (CG) The clock generator includes two types of oscillators; each for main clock (fXX) and for subclock (fXT), generates five types of clocks (fXX, fXX/2, fXX/4, fXX/8, and fXT), and supplies one of them as the operating clock for the CPU (fCPU). (g) Timer/counter A two-channel 16-bit timer/event counter, a four-channel 8-bit timer/event counter, and a two-channel 8bit interval timer are equipped, enabling measurement of pulse intervals and frequency as well as programmable pulse output. The two-channel 8-bit timer/event counter can be connected via a cascade to enable use as a 16-bit timer. The two-channel 8-bit interval timer can be connected via a cascade to enable to be used as a 16-bit timer. (h) Watch timer This timer counts the reference time period (0.5 seconds) for counting the clock (the 32.768 kHz subclock or the main clock). At the same time, the watch timer can be used as an interval timer for the main clock. (i) Watchdog timer A watchdog timer is equipped to detect inadvertent program loops, system abnormalities, etc. It can also be used as an interval timer. When used as a watchdog timer, it generates a non-maskable interrupt request (INTWDT) after an overflow occurs. When used as an interval timer, it generates a maskable interrupt request (INTWDTM) after an overflow occurs. (j) Serial interface (SIO) The V850/SB1 includes three kinds of serial interfaces: asynchronous serial interfaces (UART0, UART1), clocked serial interfaces (CSI0 to CSI3), and an 8-/16-bit variable-length serial interface (CSI4). 2 2 2 These plus the I C bus interfaces (I C0, I C1) comprise five channels. Two of these channels are 2 switchable between the UART and CSI and another two switchable between CSI and I C. For UART0 and UART1, data is transferred via the TXD0, TXD1, RXD0, and RXD1 pins. For CSI0 to CSI3, data is transferred via the SO0 to SO3, SI0 to SI3, and SCK0 to SCK3 pins. For CSI4, data is transferred via the SO4, SI4, and SCK4 pins. 2 2 For I C0 and I C1, data is transferred via the SDA0, SDA1, SCL0, and SCL1 pins. I C0 and I C1 are equipped only in the PD703030BY, 703031BY, 703032BY, 703033BY, 70F3030BY, 2 2 70F3032BY, and 70F3033BY. For UART and CSI4, a dedicated baud rate generator is equipped. (k) A/D converter This high-speed, high-resolution 10-bit A/D converter includes 12 analog input pins. Conversion uses the successive approximation method. (l) DMA controller A six-channel DMA controller is equipped. This controller transfers data between the internal RAM and on-chip peripheral I/O devices in response to interrupt requests sent by on-chip peripheral I/O. User's Manual U13850EJ6V0UD 51 CHAPTER 1 INTRODUCTION (m) Real-time output port (RTP) The RTP is a real-time output function that transfers preset 8-bit data to an output latch when an external trigger signal occurs or when there is a match signal in a timer compare register. It can also be used for 4-bit x 2 channels. (n) Ports As shown below, the following ports have general-purpose port functions and control pin functions. Port 52 I/O Port Function Generalpurpose port Control Function Port 0 8-bit I/O NMI, external interrupt, A/D converter trigger, RTP trigger Port 1 6-bit I/O Port 2 8-bit I/O Serial interface, timer I/O Port 3 8-bit I/O Timer I/O, external address bus, serial interface Port 4 8-bit I/O External address/data bus Port 5 8-bit I/O Port 6 6-bit I/O Port 7 8-bit input Port 8 4-bit input Port 9 7-bit I/O External bus interface control signal I/O Port 10 8-bit I/O Real-time output port, external address bus, key return input Port 11 4-bit I/O Wait control, external address bus Serial interface External address bus A/D converter analog input User's Manual U13850EJ6V0UD CHAPTER 1 INTRODUCTION 1.4 V850/SB2 (A Versions) 1.4.1 Features (V850/SB2 (A versions)) { Number of instructions: 74 { Minimum instruction execution time 79 ns (operating at 12.58 MHz, external power supply 5 V, regulator output 3.0 V) { General-purpose registers { Instruction set 32 bits x 32 registers Signed multiplication (16 x 16 32): 158 ns (operating at 12.58 MHz) (able to execute instructions in parallel continuously without creating any register hazards). Saturation operations (overflow and underflow detection functions are included) 32-bit shift instruction: 1 clock Bit manipulation instructions Load/store instructions with long/short format { Memory space 16 MB of linear address space (for programs and data) External expandability: expandable to 4 MB Memory block allocation function: 2 MB per block Programmable wait function Idle state insertion function { External bus interface 16-bit data bus (address/data multiplex) Address bus: separate output enabled 3 V to 5 V interface enabled Bus hold function External wait function { Internal memory PD703034A, 703034AY (mask ROM: 128 KB/RAM: 12 KB) PD703035A, 703035AY (mask ROM: 256 KB/RAM: 16 KB) PD703037A, 703037AY (mask ROM: 512 KB/RAM: 24 KB) PD70F3035A, 70F3035AY (flash memory: 256 KB/RAM: 16 KB) PD70F3037A, 70F3037AY (flash memory: 512 KB/RAM: 24 KB) { Interrupts and exceptions Non-maskable interrupts: 2 sources Maskable interrupts: 39 sources (PD703034A, 703035A, 703037A, 70F3035A, 70F3037A) 40 sources (PD703034AY, 703035AY, 703037AY, 70F3035AY, 70F3037AY) Software exceptions: 32 sources Exception trap: 1 source { I/O lines Total: 83 (12 input ports and 71 I/O ports) 3 V to 5 V interface enabled { Timer/counter 16-bit timer: 2 channels (PWM output) 8-bit timer: 6 channels (four PWM outputs, cascade connection enabled) { Watch timer When operating under subclock or main clock: 1 channel Operation using the subclock or main clock is also possible in the IDLE mode. { Watchdog timer 1 channel { Serial interface (SIO) Asynchronous serial interface (UART) Clocked serial interface (CSI) User's Manual U13850EJ6V0UD 53 CHAPTER 1 2 INTRODUCTION 2 I C bus interface (I C) (only for PD703034AY, 703035AY, 703037AY, 70F3035AY, and 70F3037AY) 8-/16-bit variable-length serial interface CSI/UART: 2 channels 2 CSI/I C: 2 channels CSI (8-/16-bit valuable): 1 channel Dedicated baud rate generator: 3 channels { A/D converter 10-bit resolution: 12 channels { DMA controller Internal RAM on-chip peripheral I/O: 6 channels { Real-time output port (RTP) 8 bits x 1 channel or 4 bits x 2 channels { ROM correction Modifiable 4 points { Regulator 4.0 V to 5.5 V input internal 3.0 V { Key return function 4 to 8 selecting enabled, falling edge fixed { Clock generator During main clock or subclock operation { Power-saving functions HALT/IDLE/STOP modes 5-level CPU clock (including sub operations) { IEBus controller 1 ch { Package 100-pin plastic LQFP (fine pitch, 14 x 14) { CMOS structure All static circuits 100-pin plastic QFP (14 x 20) 1.4.2 Application fields (V850/SB2 (A versions)) AV equipment Example: Audio, car audio equipment, VCR, and TV. 54 User's Manual U13850EJ6V0UD CHAPTER 1 INTRODUCTION 1.4.3 Ordering information (V850/SB2 (A versions)) Part Number Package Internal ROM PD703034AGC-xxx-8EU 100-pin plastic LQFP (fine pitch) (14 x 14) Mask ROM (128 KB) PD703034AGF-xxx-3BA 100-pin plastic QFP (14 x 20) Mask ROM (128 KB) PD703034AYGC-xxx-8EU 100-pin plastic LQFP (fine pitch) (14 x 14) Mask ROM (128 KB) PD703034AYGF-xxx-3BA 100-pin plastic QFP (14 x 20) Mask ROM (128 KB) PD703035AGC-xxx-8EU 100-pin plastic LQFP (fine pitch) (14 x 14) Mask ROM (256 KB) PD703035AGF-xxx-3BA 100-pin plastic QFP (14 x 20) Mask ROM (256 KB) PD703035AYGC-xxx-8EU 100-pin plastic LQFP (fine pitch) (14 x 14) Mask ROM (256 KB) PD703035AYGF-xxx-3BA 100-pin plastic QFP (14 x 20) Mask ROM (256 KB) PD703037AGF-xxx-3BA 100-pin plastic QFP (14 x 20) Mask ROM (512 KB) PD703037AYGF-xxx-3BA 100-pin plastic QFP (14 x 20) Mask ROM (512 KB) PD70F3035AGC-8EU 100-pin plastic LQFP (fine pitch) (14 x 14) Flash memory (256 KB) PD70F3035AGF-3BA 100-pin plastic QFP (14 x 20) Flash memory (256 KB) PD70F3035AYGF-8EU 100-pin plastic LQFP (fine pitch) (14 x 14) Flash memory (256 KB) PD70F3035AYGF-3BA 100-pin plastic QFP (14 x 20) Flash memory (256 KB) PD70F3037AGF-3BA 100-pin plastic QFP (14 x 20) Flash memory (512 KB) PD70F3037AYGF-3BA 100-pin plastic QFP (14 x 20) Flash memory (512 KB) Remarks 1. xxx indicates ROM code suffix. 2. ROMless devices are not provided. User's Manual U13850EJ6V0UD 55 CHAPTER 1 INTRODUCTION 1.4.4 Pin configuration (top view) (V850/SB2 (A versions)) 100-pin plastic LQFP (fine pitch) (14 x 14) * PD703034AGC-xxx-8EU * PD70F3035AGC-8EU * PD703034AYGC-xxx-8EU * PD70F3035AYGC-8EU * PD703035AGC-xxx-8EU 100 99 98 97 96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81 80 79 78 77 76 Note 2 P20/SI2/SDA1 P15/SCK1/ASCK0 P14/SO1/TXD0 P13/SI1/RXD0 Note 2 P12/SCK0/SCL0 P11/SO0 Note 2 P10/SI0/SDA0 P07/INTP6 P06/INTP5/RTPTRG P05/INTP4/ADTRG P04/INTP3 P03/INTP2 P02/INTP1 P01/INTP0 P00/NMI P83/ANI11 P82/ANI10 P81/ANI9 P80/ANI8 P77/ANI7 P76/ANI6 P75/ANI5 P74/ANI4 P73/ANI3 P72/ANI2 * PD703035AYGC-xxx-8EU 1 2 3 4 5 6 7 8 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51 9 10 11 12 13 14 15 16 17 18 19 P71/ANI1 P70/ANI0 AVREF AVSS AVDD P65/A21 P64/A20 P63/A19 P62/A18 P61/A17 P60/A16 P57/AD15 P56/AD14 P55/AD13 P54/AD12 P53/AD11 P52/AD10 P51/AD9 P50/AD8 BVSS BVDD P47/AD7 P46/AD6 P45/AD5 P44/AD4 P107/RTP7/KR7/A12 P110/WAIT/A1 P111/A2 P112/A3 P113/A4 RESET XT1 XT2 REGC X2 X1 VSS VDD CLKOUT P90/LBEN/WRL P91/UBEN P92/R/W/WRH P93/DSTB/RD P94/ASTB P95/HLDAK P96/HLDRQ P40/AD0 P41/AD1 P42/AD2 P43/AD3 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 20 21 22 23 24 25 26 27 28 P21/SO2 Note 2 P22/SCK2/SCL1 P23/RXD1/SI3 P24/TXD1/SO3 P25/ASCK1/SCK3 EVDD EVSS P26/TI2/TO2 P27/TI3/TO3 P30/TI00 P31/TI01 P32/TI10/SI4 P33/TI11/SO4 P34/TO0/A13/SCK4 P35/TO1/A14 P36/TI4/TO4/A15 P37/TI5/TO5 Note 1 IC/VPP P100/RTP0/KR0/A5 P101/RTP1/KR1/A6 P102/RTP2/KR2/A7 P103/RTP3/KR3/A8 P104/RTP4/KR4/A9/IERX P105/RTP5/KR5/A10/IETX P106/RTP6/KR6/A11 Notes 1. IC (PD703034A, 703034AY, 703035A, 703035AY): Connect directly to VSS. VPP (PD70F3035A, 70F3035AY): Connect to VSS in normal operation mode. 2. 56 SCL0, SCL1, SDA0, and SDA1 are available only in the PD703034AY, 703035AY, and 70F3035AY. User's Manual U13850EJ6V0UD CHAPTER 1 INTRODUCTION 100-pin plastic QFP (14 x 20) * PD703037AGF-xxx-3BA * PD70F3037AGF-3BA * PD703034AYGF-xxx-3BA * PD703037AYGF-xxx-3BA * PD70F3037AYGF-3BA * PD703035AGF-xxx-3BA * PD70F3035AGF-3BA * PD703035AYGF-xxx-3BA * PD70F3035AYGF-3BA 100 99 98 97 96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81 P13/SI1/RXD0 P12/SCK0/SCL0Note 2 P11/SO0 P10/SI0/SDA0Note 2 P07/INTP6 P06/INTP5/RTPTRG P05/INTP4/ADTRG P04/INTP3 P03/INTP2 P02/INTP1 P01/INTP0 P00/NMI P83/ANI11 P82/ANI10 P81/ANI9 P80/ANI8 P77/ANI7 P76/ANI6 P75/ANI5 P74/ANI4 * PD703034AGF-xxx-3BA P14/SO1/TXD0 P15/SCK1/ASCK0 P20/SI2/SDA1Note 2 P21/SO2 P22/SCK2/SCL1Note 2 P23/RXD1/SI3 P24/TXD1/SO3 P25/ASCK1/SCK3 EVDD EVSS P26/TI2/TO2 P27/TI3/TO3 P30/TI00 P31/TI01 P32/TI10/SI4 P33/TI11/SO4 P34/TO0/A13/SCK4 P35/TO1/A14 P36/TI4/TO4/A15 P37/TI5/TO5 80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51 P73/ANI3 P72/ANI2 P71/ANI1 P70/ANI0 AVREF AVSS AVDD P65/A21 P64/A20 P63/A19 P62/A18 P61/A17 P60/A16 P57/AD15 P56/AD14 P55/AD13 P54/AD12 P53/AD11 P52/AD10 P51/AD9 P50/AD8 BVSS BVDD P47/AD7 P46/AD6 P45/AD5 P44/AD4 P43/AD3 P42/AD2 P41/AD1 P111/A2 P112/A3 P113/A4 RESET XT1 XT2 REGC X2 X1 VSS VDD CLKOUT P90/LBEN/WRL P91/UBEN P92/R/W/WRH P93/DSTB/RD P94/ASTB P95/HLDAK P96/HLDRQ P40/AD0 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 IC/VPPNote 1 P100/RTP0/KR0/A5 P101/RTP1/KR1/A6 P102/RTP2/KR2/A7 P103/RTP3/KR3/A8 P104/RTP4/KR4/A9/IERX P105/RTP5/KR5/A10/IETX P106/RTP6/KR6/A11 P107/RTP7/KR7/A12 P110/WAIT/A1 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Notes 1. IC (PD703034A, 703034AY, 703035A, 703035AY, 703037A, 703037AY): Connect directly to VSS. VPP (PD70F3035A, 70F3035AY, 70F3037A, 70F3037AY): Connect to VSS in normal operation mode. 2. SCL0, SCL1, SDA0, and SDA1 are available only in the PD703034AY, 703035AY, 703037AY, 70F3035AY, and 70F3037AY. User's Manual U13850EJ6V0UD 57 CHAPTER 1 INTRODUCTION Pin names (V850/SB2) A1 to A21: Address bus P70 to P77: Port 7 AD0 to AD15: Address/data bus P80 to P83: Port 8 ADTRG: A/D trigger input P90 to P96: Port 9 ANI0 to ANI11: Analog input P100 to P107: Port 10 ASCK0, ASCK1: Asynchronous serial clock P110 to P113: Port 11 ASTB: Address strobe RD: Read AVDD: Analog VDD REGC: Regulator control AVREF: Analog reference voltage RESET: Reset AVSS: Analog VSS RTP0 to RTP7: Real-time output port BVDD: Power supply for bus interface RTPTRG: RTP trigger BVSS: Ground for bus interface R/W: Read/write status CLKOUT: Clock output RXD0, RXD1: Receive data DSTB: Data strobe SCK0 to SCK4: Serial clock EVDD: Power supply for port SCL0, SCL1: Serial clock EVSS: Ground for port SDA0, SDA1: Serial data HLDAK: Hold acknowledge SI0 to SI4: Serial input HLDRQ: Hold request SO0 to SO4: Serial output IC: Internally connected TI00, TI01, TI10, IERX: IEBus receive data TI11, TI2 to TI5: Timer input IETX: IEBus transmit data TO0 to TO5: Timer output INTP0 to INTP6: Interrupt request from peripherals TXD0,TXD1: Transmit data KR0 to KR7: Key return UBEN: Upper byte enable LBEN: Lower byte enable VDD: Power supply NMI: Non-maskable interrupt request VPP: Programming power supply P00 to P07: Port 0 VSS: Ground P10 to P15: Port 1 WAIT: Wait P20 to P27: Port 2 WRH: Write strobe high level data P30 to P37: Port 3 WRL: Write strobe low level data P40 to P47: Port 4 X1, X2: Crystal for main clock P50 to P57: Port 5 XT1, XT2: Crystal for subclock P60 to P65: Port 6 58 User's Manual U13850EJ6V0UD CHAPTER 1 INTRODUCTION 1.4.5 Function blocks (V850/SB2 (A versions)) (1) Internal block diagram ROM TO0,TO1 TI2/TO2 TI3/TO3 TI4/TO4 TI5/TO5 SO0 Timer/counter 16-bit timer: TM0, TM1 8-bit timer: TM2 to TM7 RAM SIO Note 2 Note 3 CSI0/I2C0 Note 4 SO2 SI2/SDA1Note 3 SCK2/SCL1Note 3 CSI2/I2C1 Note 4 SI0/SDA0 SCK0/SCL0Note 3 SO1/TXD0 SI1/RXD0 SCK1/ASCK0 32-bit barrel shifter Multiplier 16 x1632 System register BCU ALU General-purpose registers 32 bits x 32 A16 to A21 (P60 to P65) AD0 to AD15 (P40 to P47, P50 to P57) Ports RTP CSI3/UART1 SO4 SI4 SCK4 Variable length CSI4 CLKOUT A/D converter X1 CG Key return 3.0 V DMAC: 6 ch REGC Watch timer Watchdog timer IETX IERX ASTB (P94) DSTB/RD (P93) R/W /WRH (P92) UBEN (P91) LBEN/WRL (P90) WAIT (P110) A1 to A12 (P100 to P107, P110 to P113) A13 to A15 (P34 to P36) CSI1/UART0 SO3/TXD1 SI3/RXD1 SCK3/ASCK1 KR0 to KR7 PC HLDRQ (P96) HLDAK (P95) Instruction queue AVDD AVREF AVSS ANI0 to ANI11 ADTRG TI00,TI01, TI10,TI11 Note 1 ROM correction RTP0 to RTP7 RTPTRG INTP0 to INTP6 CPU INTC P110 to P113 P100 to P107 P90 to P96 P80 to P83 P70 to P77 P60 to P65 P50 to P57 P40 to P47 P30 to P37 P20 to P27 P10 to P15 P00 to P07 NMI Regulator X2 XT1 XT2 RESET VDD VSS BVDD BVSS EVDD EVSS IEBus VPPNote 6 ICNote 6 Notes 1. 2. 3. 4. 5. 6. 128 KB (mask ROM) PD703034A, 703034AY: 256 KB (mask ROM) PD703035A, 703035AY: 512 KB (mask ROM) PD703037A, 703037AY: PD70F3035A, 70F3035AY: 256 KB (flash memory) PD70F3037A, 70F3037AY: 512 KB (flash memory) 12 KB PD703034A, 703034AY: PD703035A, 703035AY, 70F3035A, 70F3035AY: 16 KB 20 KB PD703036A, 703036AY: PD703037A, 703037AY, 70F3037A, 70F3037AY: 24 KB SDA0, SDA1, SCL0, and SCL1 pins are available only in the PD703034AY, 703035AY, 703037AY, 70F3035AY, and 70F3037AY 2 I C function is available only in the PD703034AY, 703035AY, 703037AY, 70F3035AY, and 70F3037AY PD70F3035A, 70F3035AY, 70F3037A, 70F3037AY PD703034A, 703034AY, 703035A, 703035AY, 703037A, 703037AY User's Manual U13850EJ6V0UD 59 CHAPTER 1 INTRODUCTION (2) Internal units (a) CPU The CPU uses five-stage pipeline control to enable single-clock execution of address calculations, arithmetic logic operations, data transfers, and almost all other instruction processing. Other dedicated on-chip hardware, such as the multiplier (16 bits x 16 bits 32 bits) and the barrel shifter (32 bits) help accelerate processing of complex instructions. (b) Bus control unit (BCU) The BCU starts a required external bus cycle based on the physical address obtained by the CPU. When an instruction is fetched from external memory space and the CPU does not send a bus cycle start request, the BCU generates a prefetch address and prefetches the instruction code. The prefetched instruction code is stored in an instruction queue. (c) ROM This consists of a mask ROM or flash memory mapped to the address space starting at 00000000H. The ROM capacity varies depending on the product. The ROM capacity of each product is shown below. PD703034A, 703034AY: 128 KB (mask ROM) PD703035A, 703035AY: 256 KB (mask ROM) PD70F3035A, 70F3035AY: 256 KB (flash memory) PD703037A, 703037AY: 512 KB (mask ROM) PD70F3037A, 70F3037AY: 512 KB (flash memory) ROM can be accessed by the CPU in one clock cycle during instruction fetch. (d) RAM The RAM capacity and mapping addresses vary depending on the product. The RAM capacity of each product is shown below. PD703034A, 703034AY: 12 KB (mapping starts at FFFFC000H) PD703035A, 703035AY, 70F3035A, 70F3035AY: 16 KB (mapping starts at FFFFB000H) PD703037A, 703037AY, 70F3037A, 70F3037AY: 24 KB (mapping starts at FFFF9000H) RAM can be accessed by the CPU in one clock cycle during data access. (e) Interrupt controller (INTC) This controller handles hardware interrupt requests (NMI, INTP0 to INTP6) from on-chip peripheral hardware and external hardware. Eight levels of interrupt priorities can be specified for these interrupt requests, and multiplexed servicing control can be performed for interrupt sources. (f) Clock generator (CG) The clock generator includes two types of oscillators; each for main clock (fXX) and for subclock (fXT), generates five types of clocks (fXX, fXX/2, fXX/4, fXX/8, and fXT), and supplies one of them as the operating clock for the CPU (fCPU). 60 User's Manual U13850EJ6V0UD CHAPTER 1 INTRODUCTION (g) Timer/counter A two-channel 16-bit timer/event counter, a four-channel 8-bit timer/event counter, and a two-channel 8bit interval timer are equipped, enabling measurement of pulse intervals and frequency as well as programmable pulse output. The two-channel 8-bit timer/event counter can be connected via a cascade to enable use as a 16-bit timer. The two-channel 8-bit interval timer can be connected via a cascade to enable to be used as a 16-bit timer. (h) Watch timer This timer counts the reference time period (0.5 seconds) for counting the clock (the 32.768 kHz subclock or the main clock). At the same time, the watch timer can be used as an interval timer for the main clock. (i) Watchdog timer A watchdog timer is equipped to detect inadvertent program loops, system abnormalities, etc. It can also be used as an interval timer. When used as a watchdog timer, it generates a non-maskable interrupt request (INTWDT) after an overflow occurs. When used as an interval timer, it generates a maskable interrupt request (INTWDTM) after an overflow occurs. (j) Serial interface (SIO) The V850/SB2 includes three kinds of serial interfaces: asynchronous serial interfaces (UART0, UART1), clocked serial interfaces (CSI0 to CSI3), and an 8-/16-bit variable-length serial interface (CSI4). 2 2 2 These plus the I C bus interfaces (I C0, I C1) comprise five channels. Two of these channels are 2 switchable between the UART and CSI and another two switchable between CSI and I C. For UART0 and UART1, data is transferred via the TXD0, TXD1, RXD0, and RXD1 pins. For CSI0 to CSI3, data is transferred via the SO0 to SO3, SI0 to SI3, and SCK0 to SCK3 pins. For CSI4, data is transferred via the SO4, SI4, and SCK4 pins. 2 2 For I C0 and I C1, data is transferred via the SDA0, SDA1, SCL0, and SCL1 pins. I C0 and I C1 are equipped only in the PD703034AY, 703035AY, 703037AY, 70F3035AY, and 2 2 70F3037AY. For UART and CSI4, a dedicated baud rate generator is equipped. (k) A/D converter This high-speed, high-resolution 10-bit A/D converter includes 12 analog input pins. Conversion uses the successive approximation method. (l) DMA controller A six-channel DMA controller is equipped. This controller transfers data between the internal RAM and on-chip peripheral I/O devices in response to interrupt requests sent by on-chip peripheral I/O. (m) Real-time output port (RTP) The RTP is a real-time output function that transfers preset 8-bit data to an output latch when an external trigger signal occurs or when there is a match signal in a timer compare register. It can also be used for 4-bit x 2 channels. User's Manual U13850EJ6V0UD 61 CHAPTER 1 INTRODUCTION (n) Ports As shown below, the following ports have general-purpose port functions and control pin functions. Port I/O Port Function Control Function Port 0 8-bit I/O Port 1 6-bit I/O Port 2 8-bit I/O Serial interface, timer I/O Port 3 8-bit I/O Timer I/O, external address bus, serial interface Port 4 8-bit I/O External address/data bus Port 5 8-bit I/O Port 6 6-bit I/O Port 7 8-bit input Port 8 4-bit input Port 9 7-bit I/O External bus interface control signal I/O Port 10 8-bit I/O Real-time output port, external address bus, key return input, IEBus data I/O Port 11 4-bit I/O Wait control, external address bus Generalpurpose port NMI, external interrupt, A/D converter trigger, RTP trigger Serial interface External address bus A/D converter analog input (o) IEBus controller The IEBus controller is a small-scale digital data transfer system aiming at data transfer among units. The IEBus controller is incorporated only in the V850/SB2. 62 User's Manual U13850EJ6V0UD CHAPTER 1 INTRODUCTION 1.5 V850/SB2 (B and H Versions) 1.5.1 Features (V850/SB2 (B and H versions)) { Number of instructions: 74 { Minimum instruction execution time B versions: 79 ns (@ 12.58 MHz operation, external power supply 5 V, regulator output 3.0 V operation) H versions: 53 ns (@ 18.87 MHz operation, external power supply 5 V, regulator output 3.3 V operation) { General-purpose registers 32 bits x 32 registers { Instruction set Signed multiplication (16 x 16 32): (able to execute instructions in parallel continuously without creating any register hazards). B versions: 158 ns (@ 12.58 MHz operation) H versions: 106 ns (@ 18.87 MHz operation) Saturation operations (overflow and underflow detection functions are included) 32-bit shift instruction: 1 clock Bit manipulation instructions Load/store instructions with long/short format { Memory space 16 MB of linear address space (for programs and data) External expandability: expandable to 4 MB Memory block allocation function: 2 MB per block Programmable wait function Idle state insertion function { External bus interface 16-bit data bus (address/data multiplex) Address bus: separate output enabled 3 V to 5 V interface enabled Bus hold function External wait function { Internal memory PD703034B, 703034BY (mask ROM: 128 KB/RAM: 8 KB) PD703035B, 703035BY (mask ROM: 256 KB/RAM: 16 KB) PD703036H, 703036HY (mask ROM: 384 KB/RAM: 24 KB) PD703037H, 703037HY (mask ROM: 512 KB/RAM: 24 KB) PD70F3035B, 70F3035BY (flash memory: 256 KB/RAM: 16 KB) PD70F3036H, 70F3036HY (flash memory: 384 KB/RAM: 24 KB) PD70F3037H, 70F3037HY (flash memory: 512 KB/RAM: 24 KB) { Interrupts and exceptions Non-maskable interrupts: 2 sources Maskable interrupts: 39 sources (PD703034B, 703035B, 703036H, 703037H, 70F3035B, 70F3036H, 70F3037H) 40 sources (PD703034BY, 703035BY, 703036HY, 703037HY, 70F3035BY, 70F3036HY, 70F3037HY) Software exceptions: 32 sources Exception trap: 1 source { I/O lines Total: 83 (12 input ports and 71 I/O ports) { Timer/counter 16-bit timer: 2 channels (PWM output) 3 V to 5 V interface enabled 8-bit timer: 6 channels (four PWM outputs, cascade connection enabled) User's Manual U13850EJ6V0UD 63 CHAPTER 1 { Watch timer INTRODUCTION When operating under subclock or main clock: 1 channel Operation using the subclock or main clock is also possible in the IDLE mode. { Watchdog timer 1 channel { Serial interface (SIO) Asynchronous serial interface (UART) Clocked serial interface (CSI) 2 2 I C bus interface (I C) (only for PD703034BY, 703035BY, 703036HY, 703037HY, 70F3035BY, 70F3036HY, and 70F3037HY) 8-/16-bit variable-length serial interface CSI/UART: 2 channels 2 CSI/I C: 2 channels CSI (8-/16-bit valuable): 1 channel Dedicated baud rate generator: 3 channels { A/D converter 10-bit resolution: 12 channels { DMA controller Internal RAM on-chip peripheral I/O: 6 channels { Real-time output port (RTP) 8 bits x 1 channel or 4 bits x 2 channels { ROM correction Modifiable 4 points { Regulator 4.0 V to 5.5 V input internal 3.0 V { Key return function 4 to 8 selecting enabled, falling edge fixed { Clock generator During main clock or subclock operation { Power-saving functions HALT/IDLE/STOP modes 5-level CPU clock (including sub operations) { IEBus controller 1 ch { Package 100-pin plastic LQFP (fine pitch, 14 x 14) { CMOS structure All static circuits 100-pin plastic QFP (14 x 20) 1.5.2 Application fields (V850/SB2 (B and H versions)) AV equipment Example: Audio, car audio equipment, VCR, and TV. 64 User's Manual U13850EJ6V0UD CHAPTER 1 INTRODUCTION 1.5.3 Ordering information (V850/SB2 (B and H versions)) Part Number Package Internal ROM PD703034BGC-xxx-8EU 100-pin plastic LQFP (fine pitch) (14 x 14) Mask ROM (128 KB) PD703034BGF-xxx-3BA 100-pin plastic QFP (14 x 20) Mask ROM (128 KB) PD703034BYGC-xxx-8EU 100-pin plastic LQFP (fine pitch) (14 x 14) Mask ROM (128 KB) PD703034BYGF-xxx-3BA 100-pin plastic QFP (14 x 20) Mask ROM (128 KB) PD703035BGC-xxx-8EU 100-pin plastic LQFP (fine pitch) (14 x 14) Mask ROM (256 KB) PD703035BGF-xxx-3BA 100-pin plastic QFP (14 x 20) Mask ROM (256 KB) PD703035BYGC-xxx-8EU 100-pin plastic LQFP (fine pitch) (14 x 14) Mask ROM (256 KB) PD703035BYGF-xxx-3BA 100-pin plastic QFP (14 x 20) Mask ROM (256 KB) PD703036HGC-xxx-8EU 100-pin plastic LQFP (fine pitch) (14 x 14) Mask ROM (384 KB) PD703036HGF-xxx-3BA 100-pin plastic QFP (14 x 20) Mask ROM (384 KB) PD703036HYGC-xxx-8EU 100-pin plastic LQFP (fine pitch) (14 x 14) Mask ROM (384 KB) PD703036HYGF-xxx-3BA 100-pin plastic QFP (14 x 20) Mask ROM (384 KB) PD703037HGF-xxx-3BA 100-pin plastic QFP (14 x 20) Mask ROM (512 KB) PD703037HYGF-xxx-3BA 100-pin plastic QFP (14 x 20) Mask ROM (512 KB) PD70F3035BGC-8EU 100-pin plastic LQFP (fine pitch) (14 x 14) Flash memory (256 KB) PD70F3035BGF-3BA 100-pin plastic QFP (14 x 20) Flash memory (256 KB) PD70F3035BYGF-8EU 100-pin plastic LQFP (fine pitch) (14 x 14) Flash memory (256 KB) PD70F3035BYGF-3BA 100-pin plastic QFP (14 x 20) Flash memory (256 KB) PD70F3036HGC-8EU 100-pin plastic LQFP (fine pitch) (14 x 14) Flash memory (384 KB) PD70F3036HGF-3BA 100-pin plastic QFP (14 x 20) Flash memory (384 KB) PD70F3036HYGC-8EU 100-pin plastic LQFP (fine pitch) (14 x 14) Flash memory (384 KB) PD70F3036HYGF-3BA 100-pin plastic QFP (14 x 20) Flash memory (384 KB) PD70F3037HGF-3BA 100-pin plastic QFP (14 x 20) Flash memory (512 KB) PD70F3037HYGF-3BA 100-pin plastic QFP (14 x 20) Flash memory (512 KB) Note In planning Remarks 1. xxx indicates ROM code suffix. 2. ROMless devices are not provided. User's Manual U13850EJ6V0UD 65 CHAPTER 1 INTRODUCTION 1.5.4 Pin configuration (top view) (V850/SB2 (B and H versions)) 100-pin plastic LQFP (fine pitch) (14 x 14) * PD703036HGC-xxx-8EU * PD70F3036HGC-8EU * PD703036HYGC-xxx-8EU * PD70F3036HYGC-8EU * PD703035BGC-xxx-8EU * PD70F3035BGC-8EU * PD703035BYGC-xxx-8EU * PD70F3035BYGC-8EU 100 99 98 97 96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81 80 79 78 77 76 Note 2 P20/SI2/SDA1 P15/SCK1/ASCK0 P14/SO1/TXD0 P13/SI1/RXD0 Note 2 P12/SCK0/SCL0 P11/SO0 Note 2 P10/SI0/SDA0 P07/INTP6 P06/INTP5/RTPTRG P05/INTP4/ADTRG P04/INTP3 P03/INTP2 P02/INTP1 P01/INTP0 P00/NMI P83/ANI11 P82/ANI10 P81/ANI9 P80/ANI8 P77/ANI7 P76/ANI6 P75/ANI5 P74/ANI4 P73/ANI3 P72/ANI2 * PD703034BGC-xxx-8EU * PD703034BYGC-xxx-8EU 1 2 3 4 5 6 7 8 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51 9 10 11 12 13 14 15 16 17 18 19 P71/ANI1 P70/ANI0 AVREF AVSS AVDD P65/A21 P64/A20 P63/A19 P62/A18 P61/A17 P60/A16 P57/AD15 P56/AD14 P55/AD13 P54/AD12 P53/AD11 P52/AD10 P51/AD9 P50/AD8 BVSS BVDD P47/AD7 P46/AD6 P45/AD5 P44/AD4 P107/RTP7/KR7/A12 P110/WAIT/A1 P111/A2 P112/A3 P113/A4 RESET XT1 XT2 REGC X2 X1 VSS VDD CLKOUT P90/LBEN/WRL P91/UBEN P92/R/W/WRH P93/DSTB/RD P94/ASTB P95/HLDAK P96/HLDRQ P40/AD0 P41/AD1 P42/AD2 P43/AD3 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 20 21 22 23 24 25 26 27 28 P21/SO2 Note 2 P22/SCK2/SCL1 P23/RXD1/SI3 P24/TXD1/SO3 P25/ASCK1/SCK3 EVDD EVSS P26/TI2/TO2 P27/TI3/TO3 P30/TI00 P31/TI01 P32/TI10/SI4 P33/TI11/SO4 P34/TO0/A13/SCK4 P35/TO1/A14 P36/TI4/TO4/A15 P37/TI5/TO5 Note 1 IC/VPP P100/RTP0/KR0/A5 P101/RTP1/KR1/A6 P102/RTP2/KR2/A7 P103/RTP3/KR3/A8 P104/RTP4/KR4/A9/IERX P105/RTP5/KR5/A10/IETX P106/RTP6/KR6/A11 Notes 1. IC (PD703034B, 703034BY, 703035B, 703035BY, 703036H, 703036HY): Connect directly to VSS. VPP (PD70F3035B, 70F3035BY, 70F3036H, 70F3036HY): Connect to VSS in normal operation mode. 2. SCL0, SCL1, SDA0, and SDA1 are available only in the PD703034BY, 703035BY, 703036HY, 70F3035BY, and 70F3036HY. 66 User's Manual U13850EJ6V0UD CHAPTER 1 INTRODUCTION 100-pin plastic QFP (14 x 20) * PD703036HGF-xxx-3BA * PD70F3035BYGF-3BA * PD703034BYGF-xxx-3BA * PD703036HYGF-xxx-3BA * PD70F3036HGF-xxx-3BA * PD703035BGF-xxx-3BA * PD703037HGF-xxx-3BA * PD70F3036HYGF-xxx-3BA * PD703035BYGF-xxx-3BA * PD703037HYGF-xxx-3BA * PD70F3037HGF-3BA * PD70F3035BGF-3BA * PD70F3037HYGF-3BA 100 99 98 97 96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81 P13/SI1/RXD0 P12/SCK0/SCL0Note 2 P11/SO0 P10/SI0/SDA0Note 2 P07/INTP6 P06/INTP5/RTPTRG P05/INTP4/ADTRG P04/INTP3 P03/INTP2 P02/INTP1 P01/INTP0 P00/NMI P83/ANI11 P82/ANI10 P81/ANI9 P80/ANI8 P77/ANI7 P76/ANI6 P75/ANI5 P74/ANI4 * PD703034BGF-xxx-3BA P14/SO1/TXD0 P15/SCK1/ASCK0 P20/SI2/SDA1Note 2 P21/SO2 P22/SCK2/SCL1Note 2 P23/RXD1/SI3 P24/TXD1/SO3 P25/ASCK1/SCK3 EVDD EVSS P26/TI2/TO2 P27/TI3/TO3 P30/TI00 P31/TI01 P32/TI10/SI4 P33/TI11/SO4 P34/TO0/A13/SCK4 P35/TO1/A14 P36/TI4/TO4/A15 P37/TI5/TO5 P73/ANI3 P72/ANI2 P71/ANI1 P70/ANI0 AVREF AVSS AVDD P65/A21 P64/A20 P63/A19 P62/A18 P61/A17 P60/A16 P57/AD15 P56/AD14 P55/AD13 P54/AD12 P53/AD11 P52/AD10 P51/AD9 P50/AD8 BVSS BVDD P47/AD7 P46/AD6 P45/AD5 P44/AD4 P43/AD3 P42/AD2 P41/AD1 P111/A2 P112/A3 P113/A4 RESET XT1 XT2 REGC X2 X1 VSS VDD CLKOUT P90/LBEN/WRL P91/UBEN P92/R/W/WRH P93/DSTB/RD P94/ASTB P95/HLDAK P96/HLDRQ P40/AD0 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 IC/VPPNote 1 P100/RTP0/KR0/A5 P101/RTP1/KR1/A6 P102/RTP2/KR2/A7 P103/RTP3/KR3/A8 P104/RTP4/KR4/A9/IERX P105/RTP5/KR5/A10/IETX P106/RTP6/KR6/A11 P107/RTP7/KR7/A12 P110/WAIT/A1 80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Notes 1. IC (PD703034B, 703034BY, 703035B, 703035BY, 703036H, 703036HY, 703037H, 703037HY): Connect directly to VSS. VPP (PD70F3035B, 70F3035BY, 70F3036H, 70F3036HY, 70F3037H, 70F3037HY): Connect to VSS in normal operation mode. 2. SCL0, SCL1, SDA0, and SDA1 are available only in the PD703034BY, 703035BY, 703036HY, 703037HY, 70F3035BY, 70F3036HY, and 70F3037HY. User's Manual U13850EJ6V0UD 67 CHAPTER 1 INTRODUCTION Pin names (V850/SB2 (B and H versions)) A1 to A21: Address bus P70 to P77: Port 7 AD0 to AD15: Address/data bus P80 to P83: Port 8 ADTRG: A/D trigger input P90 to P96: Port 9 ANI0 to ANI11: Analog input P100 to P107: Port 10 ASCK0, ASCK1: Asynchronous serial clock P110 to P113: Port 11 ASTB: Address strobe RD: Read AVDD: Analog VDD REGC: Regulator control AVREF: Analog reference voltage RESET: Reset AVSS: Analog VSS RTP0 to RTP7: Real-time output port BVDD: Power supply for bus interface RTPTRG: RTP trigger BVSS: Ground for bus interface R/W: Read/write status CLKOUT: Clock output RXD0, RXD1: Receive data DSTB: Data strobe SCK0 to SCK4: Serial clock EVDD: Power supply for port SCL0, SCL1: Serial clock EVSS: Ground for port SDA0, SDA1: Serial data HLDAK: Hold acknowledge SI0 to SI4: Serial input HLDRQ: Hold request SO0 to SO4: Serial output IC: Internally connected TI00, TI01, TI10, IERX: IEBus receive data TI11, TI2 to TI5: Timer input IETX: IEBus transmit data TO0 to TO5: Timer output INTP0 to INTP6: Interrupt request from peripherals TXD0,TXD1: Transmit data KR0 to KR7: Key return UBEN: Upper byte enable LBEN: Lower byte enable VDD: Power supply NMI: Non-maskable interrupt request VPP: Programming power supply P00 to P07: Port 0 VSS: Ground P10 to P15: Port 1 WAIT: Wait P20 to P27: Port 2 WRH: Write strobe high level data P30 to P37: Port 3 WRL: Write strobe low level data P40 to P47: Port 4 X1, X2: Crystal for main clock P50 to P57: Port 5 XT1, XT2: Crystal for subclock P60 to P65: Port 6 68 User's Manual U13850EJ6V0UD CHAPTER 1 INTRODUCTION 1.5.5 Function blocks (V850/SB2 (B and H versions)) (1) Internal block diagram ROM TO0,TO1 TI2/TO2 TI3/TO3 TI4/TO4 TI5/TO5 SO0 Timer/counter 16-bit timer: TM0, TM1 8-bit timer: TM2 to TM7 RAM SIO Note 2 Note 3 CSI0/I2C0 Note 4 SO2 SI2/SDA1Note 3 SCK2/SCL1Note 3 CSI2/I2C1 Note 4 SI0/SDA0 SCK0/SCL0Note 3 SO1/TXD0 SI1/RXD0 SCK1/ASCK0 32-bit barrel shifter Multiplier 16 x1632 System register BCU ALU General-purpose registers 32 bits x 32 A16 to A21 (P60 to P65) AD0 to AD15 (P40 to P47, P50 to P57) Ports RTP CSI3/UART1 SO4 SI4 SCK4 Variable length CSI4 CLKOUT A/D converter X1 CG Key return Note 5 DMAC: 6 ch REGC Watch timer Watchdog timer IETX IERX ASTB (P94) DSTB/RD (P93) R/W /WRH (P92) UBEN (P91) LBEN/WRL (P90) WAIT (P110) A1 to A12 (P100 to P107, P110 to P113) A13 to A15 (P34 to P36) CSI1/UART0 SO3/TXD1 SI3/RXD1 SCK3/ASCK1 KR0 to KR7 PC HLDRQ (P96) HLDAK (P95) Instruction queue AVDD AVREF AVSS ANI0 to ANI11 ADTRG TI00,TI01, TI10,TI11 Note 1 ROM correction RTP0 to RTP7 RTPTRG INTP0 to INTP6 CPU INTC P110 to P113 P100 to P107 P90 to P96 P80 to P83 P70 to P77 P60 to P65 P50 to P57 P40 to P47 P30 to P37 P20 to P27 P10 to P15 P00 to P07 NMI Regulator X2 XT1 XT2 RESET VDD VSS BVDD BVSS EVDD EVSS IEBus VPPNote 6 ICNote 7 Notes 1. 2. 3. 4. 5. 6. 7. 128 K (mask ROM) PD703034B, 703034BY: 256 K (mask ROM) PD703035B, 703035BY: 384 K (mask ROM) PD703036H, 703036HY: 512 K (mask ROM) PD703037H, 703037HY: PD70F3035B, 70F3035BY: 256 K (flash memory) PD70F3036H, 70F3036HY: 384 K (flash memory) PD70F3037H, 70F3037HY: 512 K (flash memory) 8 KB PD703034B, 703034BY PD703035B, 703035BY, 70F3035B, 70F3035BY: 16 KB PD703036H, 703036HY, 703037H, 703037HY,: 24 KB 70F3036H, 70F3036HY, 70F3037H, 70F3037HY SDA0, SDA1, SCL0, SCL1 pins are available only in the PD703034BY, 703035BY, 703036HY, 703037HY, 70F3035BY, 70F3036HY, and 70F3037HY 2 I C functions is available only in the PD703034BY, 703035BY, 703036HY, 703037HY, 70F3035BY, 70F3036HY, and 70F3037HY B versions: 3.0 V, H versions: 3.3 V PD70F3035B, 70F3035BY, 70F3036H, 70F3036HY, 70F3037H, 70F3037HY PD703034B, 703034BY, 703035B, 703035BY, 703036H, 703036HY, 703037H, 703037HY User's Manual U13850EJ6V0UD 69 CHAPTER 1 INTRODUCTION (2) Internal units (a) CPU The CPU uses five-stage pipeline control to enable single-clock execution of address calculations, arithmetic logic operations, data transfers, and almost all other instruction processing. Other dedicated on-chip hardware, such as the multiplier (16 bits x 16 bits 32 bits) and the barrel shifter (32 bits) help accelerate processing of complex instructions. (b) Bus control unit (BCU) The BCU starts a required external bus cycle based on the physical address obtained by the CPU. When an instruction is fetched from external memory space and the CPU does not send a bus cycle start request, the BCU generates a prefetch address and prefetches the instruction code. The prefetched instruction code is stored in an instruction queue. (c) ROM This consists of a mask ROM or flash memory mapped to the address space starting at 00000000H. The ROM capacity varies depending on the product. The ROM capacity of each product is shown below. PD703034B, 703034BY: 128 KB (mask ROM) PD703035B, 703035BY: 256 KB (mask ROM) PD70F3035B, 70F3035BY: 256 KB (flash memory) PD703036H, 703036HY: 384 KB (mask ROM) PD70F3036H, 70F3036HY: 384 KB (flash memory) PD703037H, 703037HY: 512 KB (mask ROM) PD70F3037H, 70F3037HY: 512 KB (flash memory) ROM can be accessed by the CPU in one clock cycle during instruction fetch. (d) RAM The RAM capacity and mapping addresses vary depending on the product. The RAM capacity of each product is shown below. PD703034B, 703034BY: 8 KB (mapping starts at FFFFD000H) PD703035B, 703035BY, 70F3035B, 70F3035BY: 16 KB (mapping starts at FFFFB000H) PD703036H, 703036HY, 70F3036H, 70F3036HY, 703037H, 703037HY, 70F3037H, 70F3037HY: 24 KB (mapping starts at FFFF9000H) RAM can be accessed by the CPU in one clock cycle during data access. (e) Interrupt controller (INTC) This controller handles hardware interrupt requests (NMI, INTP0 to INTP6) from on-chip peripheral hardware and external hardware. Eight levels of interrupt priorities can be specified for these interrupt requests, and multiplexed servicing control can be performed for interrupt sources. 70 User's Manual U13850EJ6V0UD CHAPTER 1 INTRODUCTION (f) Clock generator (CG) The clock generator includes two types of oscillators; each for main clock (fXX) and for subclock (fXT), generates five types of clocks (fXX, fXX/2, fXX/4, fXX/8, and fXT), and supplies one of them as the operating clock for the CPU (fCPU). (g) Timer/counter A two-channel 16-bit timer/event counter, a four-channel 8-bit timer/event counter, and a two-channel 8bit interval timer are equipped, enabling measurement of pulse intervals and frequency as well as programmable pulse output. The two-channel 8-bit timer/event counter can be connected via a cascade to enable use as a 16-bit timer. The two-channel 8-bit interval timer can be connected via a cascade to enable to be used as a 16-bit timer. (h) Watch timer This timer counts the reference time period (0.5 seconds) for counting the clock (the 32.768 kHz subclock or the main clock). At the same time, the watch timer can be used as an interval timer for the main clock. (i) Watchdog timer A watchdog timer is equipped to detect inadvertent program loops, system abnormalities, etc. It can also be used as an interval timer. When used as a watchdog timer, it generates a non-maskable interrupt request (INTWDT) after an overflow occurs. When used as an interval timer, it generates a maskable interrupt request (INTWDTM) after an overflow occurs. (j) Serial interface (SIO) The V850/SB2 includes three kinds of serial interfaces: asynchronous serial interfaces (UART0, UART1), clocked serial interfaces (CSI0 to CSI3), and an 8-/16-bit variable-length serial interface (CSI4). 2 2 2 These plus the I C bus interfaces (I C0, I C1) comprise five channels. Two of these channels are 2 switchable between the UART and CSI and another two switchable between CSI and I C. For UART0 and UART1, data is transferred via the TXD0, TXD1, RXD0, and RXD1 pins. For CSI0 to CSI3, data is transferred via the SO0 to SO3, SI0 to SI3, and SCK0 to SCK3 pins. For CSI4, data is transferred via the SO4, SI4, and SCK4 pins. 2 2 For I C0 and I C1, data is transferred via the SDA0, SDA1, SCL0, and SCL1 pins. I C0 and I C1 are equipped only in the PD703034BY, 703035BY, 703036HY, 703037HY, 70F3035BY, 2 2 70F3036HY, and 70F3037HY. For UART and CSI4, a dedicated baud rate generator is equipped. (k) A/D converter This high-speed, high-resolution 10-bit A/D converter includes 12 analog input pins. Conversion uses the successive approximation method. (l) DMA controller A six-channel DMA controller is equipped. This controller transfers data between the internal RAM and on-chip peripheral I/O devices in response to interrupt requests sent by on-chip peripheral I/O. User's Manual U13850EJ6V0UD 71 CHAPTER 1 INTRODUCTION (m) Real-time output port (RTP) The RTP is a real-time output function that transfers preset 8-bit data to an output latch when an external trigger signal occurs or when there is a match signal in a timer compare register. It can also be used for 4-bit x 2 channels. (n) Ports As shown below, the following ports have general-purpose port functions and control pin functions. Port I/O Port Function Control Function Port 0 8-bit I/O Port 1 6-bit I/O Port 2 8-bit I/O Serial interface, timer I/O Port 3 8-bit I/O Timer I/O, external address bus, serial interface Port 4 8-bit I/O External address/data bus Port 5 8-bit I/O Port 6 6-bit I/O Port 7 8-bit input Port 8 4-bit input Port 9 7-bit I/O External bus interface control signal I/O Port 10 8-bit I/O Real-time output port, external address bus, key return input, IEBus data I/O Port 11 4-bit I/O Wait control, external address bus Generalpurpose port NMI, external interrupt, A/D converter trigger, RTP trigger Serial interface External address bus A/D converter analog input (o) IEBus controller The IEBus controller is a small-scale digital data transfer system aiming at data transfer among units. The IEBus controller is incorporated only in the V850/SB2. 72 User's Manual U13850EJ6V0UD CHAPTER 2 PIN FUNCTIONS 2.1 List of Pin Functions The names and functions of the pins of the V850/SB1 and V850/SB2 are described below divided into port pins and non-port pins. There are three types of power supplies for the pin I/O buffers: AVDD, BVDD, and EVDD. The relationship between these power supplies and the pins is described below. Table 2-1. Pin I/O Buffer Power Supplies Power Supply Corresponding Pins Usable Voltage Range AVDD Port 7, port 8 When using A/D converter: 4.5 V AVDD 5.5 V When not using A/D converter: 3.5 V AVDD 5.5 V BVDD Port 4, port 5, port 6, port 9, CLKOUT 3.0 V BVDD 5.5 V EVDD Port 0, port 1, port 2, port 3, port 10, port 11, RESET 3.0 V EVDD 5.5 V Caution The electrical specifications in the case of 3.0 V to up to 4.0 V are different from those for 4.0 to 5.5 V. Differences in pins between the V850/SB1 and V850/SB2 are shown below. Table 2-2. Differences in Pins Between V850/SB1 and V850/SB2 Pin V850/SB1 V850/SB2 PD703031A, PD70F3032A, PD703031AY, PD70F3032AY, PD703034A, PD70F3035A, PD703034AY, PD70F3035AY, PD703032A, PD70F3033A, PD703032AY, PD70F3033AY, PD703035A, PD70F3037A, PD703035AY, PD70F3037AY, PD703033A, PD70F3030B, PD703033AY, PD70F3030BY, PD703037A, PD70F3035B, PD703037AY, PD70F3035BY, PD703030B, PD70F3032B, PD703030BY, PD70F3032BY, PD703034B, PD70F3036H, PD703034BY, PD70F3036HY, PD703031B, PD70F3033B PD703031BY, PD70F3033BY PD703035B, PD70F3037H PD703035BY, PD70F3037HY PD703032B, PD703032BY, PD703036H, PD703036HY, PD703033B PD703033BY PD703037H PD703037HY IC Available None Available None Available None Available None VPP None Available None Available None Available None Available SDA0, SDA1 None Available None Available SCL0, SCL1 None Available None Available IERX None Available IETX None Available User's Manual U13850EJ6V0UD 73 CHAPTER 2 PIN FUNCTIONS (1) Port pins (1/3) Pin Name P00 I/O PULL I/O Yes P01 Function Port 0 8-bit I/O port Input/output mode can be specified in 1-bit units. Alternate Function NMI INTP0 P02 INTP1 P03 INTP2 P04 INTP3 P05 INTP4/ADTRG P06 INTP5/RTPTRG P07 INTP6 P10 I/O Yes P11 Port 1 6-bit I/O port Input/output mode can be specified in 1-bit units. SI0/SDA0 SO0 P12 SCK0/SCL0 P13 SI1/RXD0 P14 SO1/TXD0 P15 SCK1/ASCK0 P20 P21 I/O Yes Port 2 8-bit I/O port Input/output mode can be specified in 1-bit units. SI2/SDA1 SO2 P22 SCK2/SCL1 P23 SI3/RXD1 P24 SO3/TXD1 P25 SCK3/ASCK1 P26 TI2/TO2 P27 TI3/TO3 Remark 74 PULL: On-chip pull-up resistor User's Manual U13850EJ6V0UD CHAPTER 2 PIN FUNCTIONS (2/3) Pin Name P30 I/O PULL I/O Yes P31 Function Port 3 8-bit I/O port Input/output mode can be specified in 1-bit units. Alternate Function TI00 TI01 P32 TI10/SI4 P33 TI11/SO4 P34 TO0/A13/SCK4 P35 TO1/A14 P36 TI4/TO4/A15 P37 TI5/TO5 P40 I/O No P41 Port 4 8-bit I/O port Input/output mode can be specified in 1-bit units. AD0 AD1 P42 AD2 P43 AD3 P44 AD4 P45 AD5 P46 AD6 P47 AD7 P50 I/O No P51 Port 5 8-bit I/O port Input/output mode can be specified in 1-bit units. AD8 AD9 P52 AD10 P53 AD11 P54 AD12 P55 AD13 P56 AD14 P57 AD15 P60 P61 I/O No Port 6 6-bit I/O port Input/output mode can be specified in 1-bit units. A16 A17 P62 A18 P63 A19 P64 A20 P65 A21 Remark PULL: On-chip pull-up resistor User's Manual U13850EJ6V0UD 75 CHAPTER 2 PIN FUNCTIONS (3/3) Pin Name P70 I/O PULL Input No P71 Function Port 7 8-bit input port Alternate Function ANI0 ANI1 P72 ANI2 P73 ANI3 P74 ANI4 P75 ANI5 P76 ANI6 P77 ANI7 P80 Input No P81 Port 8 4-bit input port ANI8 ANI9 P82 ANI10 P83 ANI11 P90 I/O No P91 Port 9 7-bit I/O port Input/output mode can be specified in 1-bit units. LBEN/WRL UBEN P92 R/W/WRH P93 DSTB/RD P94 ASTB P95 HLDAK P96 HLDRQ P100 I/O Yes P101 Port 10 8-bit I/O port Input/output mode can be specified in 1-bit units. RTP0/A5/KR0 RTP1/A6/KR1 P102 RTP2/A7/KR2 P103 RTP3/A8/KR3 P104 RTP4/A9/KR4/IERX P105 RTP5/A10/KR5/IETX P106 RTP6/A11/KR6 P107 RTP7/A12/KR7 P110 P111 I/O Yes Port 11 4-bit I/O port Input/output mode can be specified in 1-bit units. A1/WAIT A2 P112 A3 P113 A4 Remark 76 PULL: On-chip pull-up resistor User's Manual U13850EJ6V0UD CHAPTER 2 PIN FUNCTIONS (2) Non-port pins (1/3) Pin Name A1 I/O PULL Output Yes Function Lower address bus used for external memory expansion Alternate Function P110/WAIT A2 to A4 P111 to P113 A5 to A8 P100/RTP0/KR0 to P103/RTP3/KR3 A9 P104/RTP4/KR4/IERX A10 P105/RTP5/KR5/IETX A11, A12 P106/RTP6/KR6 to P107/RTP7/KR7 A13 P34/TO0/SCK4 A14 P35/TO1 A15 P36/TI4/TO4 A16 to A21 Output No Higher address bus used for external memory expansion P60 to P65 AD0 to AD7 I/O No 16-bit multiplexed address/data bus used for external memory expansion P50 to P57 AD8 to AD15 P40 to P47 ADTRG Input Yes A/D converter external trigger input P05/INTP4 ANI0 to ANI7 Input No Analog input to A/D converter P70 to P77 ANI8 to ANI11 Input No ASCK0 Input Yes P80 to P83 Serial clock input for UART0 and UART1 ASCK1 P15/SCK1 P25/SCK3 ASTB Output No AVDD - - Positive power supply for A/D converter and alternate-function port - AVREF Input - Reference voltage input for A/D converter - AVSS - - Ground potential for A/D converter and alternate-function port - BVDD - - Positive power supply for bus interface and alternate-function port - BVSS - - Ground potential for bus interface and alternate-function port - CLKOUT Output - Internal system clock output - DSTB Output No EVDD - - Power supply for I/O port and alternate-function pin (except for bus interface) - EVSS - - Ground potential for I/O port and alternate-function pin (except for bus interface) - Output No HLDAK External address strobe signal output External data strobe signal output Bus hold acknowledge output P94 P93/RD P95 HLDRQ Input No Bus hold request input P96 IERX Input Yes IEBus data input (V850/SB2 only) P104/RTP4/KR4/A9 IETX Output IEBus data output (V850/SB2 only) P105/RTP5/KR5/A10 External interrupt request input (analog noise elimination) P01 to P04 External interrupt request input (digital noise elimination) P05/ADTRG INTP0 to INTP3 INTP4 Input Yes INTP5 Remark P06/RTPTRG PULL: On-chip pull-up resistor User's Manual U13850EJ6V0UD 77 CHAPTER 2 PIN FUNCTIONS (2/3) Pin Name INTP6 I/O PULL Function Input Yes External interrupt request input (digital noise elimination for remote control) P07 Key return input P100/A5/RTP0 to P103/A8/RTP3 KR0 to KR3 Alternate Function KR4 P104/A9/RTP4/IERX KR5 P105/A10/RTP5/IETX KR6, KR7 P106/A11/RTP6 to P107/A12/RTP7 LBEN Output No - - NMI Input Yes Non-maskable interrupt request input (analog noise elimination) P00 RD Output No Read strobe signal output P93/DSTB REGC - - Capacitor connection for regulator output stabilization - RESET Input - System reset input - Output Yes IC RTP0 to RTP3 External data bus's lower byte enable signal output P90/WRL - Internally connected (mask ROM versions only) P100/A5/KR0 to P103/A8/KR3 Real-time output port RTP4 P104/A9/KR4/IERX RTP5 P105/A10/KR5/IETX RTP6, RTP7 P106/A11/KR6, P107/A12/KR7 RTPTRG R/W RXD0 Input Yes RTP external trigger input P06/INTP5 Output No External read/write status output P92/WRH Input Yes Serial receive data input for UART0 and UART1 P13/SI1 RXD1 SCK0 P23/SI3 I/O Yes Serial clock I/O (3-wire type) for CSI0 to CSI3 P12/SCL0 SCK1 P15/ASCK0 SCK2 P22/SCL1 SCK3 P25/ASCK1 SCK4 SCL0 I/O Yes SCL1 SDA0 I/O Yes SDA1 SI0 Input Yes Serial clock I/O for variable-length CSI4 (3-wire type) P34/TO0/A13 Serial clock I/O for I2C0 and I2C1 (Y versions (products with onchip I2C) only) P12/SCK0 2 2 Serial transmit/receive data I/O for I C0 and I C1 (Y versions (products with on-chip I 2 C) only) Serial receive data input (3-wire type) for CSI0 to CSI3 P22/SCK2 P10/SI0 P20/SI2 P10/SDA0 SI1 P13/RXD0 SI2 P20/SDA1 SI3 P23/RXD1 SI4 SO0 Remark 78 Output Yes Serial receive data input (3-wire type) for variable-length CSI4 P32/TI10 Serial transmit data output (3-wire type) for CSI0 to CSI3 P11 PULL: On-chip pull-up resistor User's Manual U13850EJ6V0UD CHAPTER 2 PIN FUNCTIONS (3/3) Pin Name SO1 I/O PULL Output Yes Function Serial transmit data output (3-wire type) for CSI0 to CSI3 Alternate Function P14/TXD0 SO2 P21 SO3 P24/TXD1 SO4 Serial transmit data output for variable-length CSI4 (3-wire type) P33/TI11 Shared as external capture trigger input and external count clock input for TM0 P30 TI01 External capture trigger input for TM0 P31 TI10 Shared as external capture trigger input and external count clock input for TM1 P32/SI4 TI11 External capture trigger input for TM1 P33/SO4 TI2 External count clock input for TM2 P26/TO2 TI3 External count clock input for TM3 P27/TO3 External count clock input for TM4 P36/TO4/A15 External count clock input for TM5 P37/TO5 Pulse signal output for TM0, TM1 P34/A13/SCK4/P35/ A14 TO2 Pulse signal output for TM2 P26/TI2 TO3 Pulse signal output for TM3 P27/TI3 TO4 Pulse signal output for TM4 P36/TI4/A15 TO5 Pulse signal output for TM5 P37/TI5 Serial transmit data output for UART0 and UART1 P14/SO1 TI00 TI4 Input Input Yes Yes TI5 TO0, TO1 TXD0 Output Output Yes Yes TXD1 UBEN P24/SO3 Output No VDD - - Positive power supply pin - VPP - - High-voltage apply pin for program write/verify (flash memory versions only) - VSS - - GND potential - WAIT Input Yes Control signal input for inserting wait in bus cycle P110/A1 WRH Output No Higher byte write strobe signal output for external data bus P92/R/W Lower byte write strobe signal output for external data bus P90/LBEN WRL X1 Input X2 - XT1 Input XT2 - No Higher byte enable signal output for external data bus Resonator connection for main clock P91 - - No Resonator connection for subclock - - Remark PULL: On-chip pull-up resistor User's Manual U13850EJ6V0UD 79 CHAPTER 2 PIN FUNCTIONS 2.2 Pin States The operating states of various pins are described below with reference to their operating modes. Table 2-3. Operating States of Pins in Each Operating Mode ResetNote 1 HALT Mode/ Idle State IDLE Mode/ STOP Mode Bus Hold Bus Cycle InactiveNote 2 AD0 to AD15 Hi-Z Hi-Z Hi-Z Hi-Z Hi-Z A1 to A15 Hi-Z Held Held Held HeldNote 3 A16 to A21 Hi-Z Held Hi-Z Hi-Z HeldNote 3 LBEN, UBEN Hi-Z Held Hi-Z Hi-Z HeldNote 3 R/W Hi-Z H Hi-Z Hi-Z H DSTB, WRL, WRH, RD Hi-Z H Hi-Z Hi-Z H ASTB Hi-Z H Hi-Z Hi-Z H HLDRQ -- Operating -- Operating Operating HLDAK Hi-Z Operating Hi-Z L Operating -- -- -- -- Operating State Pin WAIT CLKOUT Hi-Z Notes 1. 2. Note 4 Operating L -- Note 4 Operating OperatingNote 4 Pins (except the CLKOUT pin) are used as port pins (input mode) after reset. The bus cycle inactivation timing occurs when the internal memory area is specified by the program counter (PC) in the external expansion mode. 3. * When the external memory area has not been accessed even once after reset is released and the external expansion mode is set: Undefined * When the bus cycle is inactivated after access to the external memory area, or when the external memory area has not been accessed even once after the external expansion mode is released and set again: The state of the external bus cycle when the external memory area accessed last is held. 4. Remark Low level (L) when in clock output inhibit mode Hi-Z: High impedance Held: State is held during preset external bus cycle 80 L: Low-level output H: High-level output -: Input without sampling sampled (not acknowledged) User's Manual U13850EJ6V0UD CHAPTER 2 PIN FUNCTIONS 2.3 Description of Pin Functions (1) P00 to P07 (Port 0) *** 3-state I/O P00 to P07 constitute an 8-bit I/O port that can be set to input or output in 1-bit units. P00 to P07 can also function as an NMI input, external interrupt request inputs, external trigger for the A/D converter, and external trigger for the real-time output port. The valid edges of the NMI and INTP0 to INTP6 pins are specified by the EGP0 and EGN0 registers. (a) Port function P00 to P07 can be set to input or output in 1-bit units using the port 0 mode register (PM0). (b) Alternate functions (i) NMI (Non-maskable interrupt request) *** input This is a non-maskable interrupt request signal input pin. (ii) INTP0 to INTP6 (Interrupt request from peripherals) *** input These are external interrupt request input pins. (iii) ADTRG (A/D trigger input) *** input This is the A/D converter's external trigger input pin. This pin is controlled by A/D converter mode register 1 (ADM1). (iv) RTPTRG (Real-time output port trigger input) *** input This is the real-time output port's external trigger input pin. This pin is controlled by the real-time output port control register (RTPC). User's Manual U13850EJ6V0UD 81 CHAPTER 2 PIN FUNCTIONS (2) P10 to P15 (Port 1) *** 3-state I/O P10 to P15 constitute a 6-bit I/O port that can be set to input or output in 1-bit units. P10 to P15 can also function as input or output pins for the serial interface. P10 to P12, P14, and P15 can be selected as normal output or N-ch open-drain output. (a) Port function P10 to P15 can be set to input or output in 1-bit units using the port 1 mode register (PM1). (b) Alternate functions (i) SI0, SI1 (Serial input 0, 1) *** input These are the serial receive data input pins of CSI0 and CSI1. (ii) SO0, SO1 (Serial output 0, 1) *** output These are the serial transmit data output pins of CSI0 and CSI1. (iii) SCK0, SCK1 (Serial clock 0, 1) *** 3-state I/O These are the serial clock I/O pins for CSI0 and CSI1. (iv) SDA0 (Serial data 0) *** I/O 2 2 This is the serial transmit/receive data I/O pin of I C0 (Y versions (products with on-chip I C) only). (v) SCL0 (Serial clock 0) *** I/O 2 2 This is the serial clock I/O pin for I C0 (Y versions (products with on-chip I C) only). (vi) RXD0 (Receive data 0) *** input This is the serial receive data input pin of UART0. (vii) TXD0 (Transmit data 0) *** output This is the serial transmit data output pin of UART0. (viii) ASCK0 (Asynchronous serial clock 0) *** input This is the serial baud rate clock input pin of UART0. 82 User's Manual U13850EJ6V0UD CHAPTER 2 PIN FUNCTIONS (3) P20 to P27 (Port 2) *** 3-state I/O P20 to P27 constitute an 8-bit I/O port that can be set to input or output in 1-bit units. P20 to P27 can also function as input or output pins for the serial interface, and input or output pins for the timer/counter. P20 to P22, P24, and P25 can be selected as normal output or N-ch open-drain output. (a) Port function P20 to P27 can be set to input or output in 1-bit units using the port 2 mode register (PM2). (b) Alternate functions (i) SI2, SI3 (Serial input 2, 3) *** input These are the serial receive data input pins of CSI2 and CSI3. (ii) SO2, SO3 (Serial output 2, 3) *** output These are the serial transmit data output pins of CSI2 and CSI3. (iii) SCK2, SCK3 (Serial clock 2, 3) *** 3-state I/O These are the serial clock I/O pins of CSI2 and CSI3. (iv) SDA1 (Serial data 1) ... I/O 2 2 This is the serial transmit/receive data I/O pin of I C1 (Y versions (products with on-chip I C) only). (v) SCL1 (Serial clock) ... I/O 2 2 This is the serial clock I/O pin of I C1 (Y versions (products with I C) only). (vi) RXD1 (Receive data 1) ... input This is the serial receive data input pin of UART1. (vii) TXD1 (Transmit data 1) ... output This is the serial transmit data output pin of UART1. (viii) ASCK1 (Asynchronous serial clock 1) ... input This is the serial baud rate clock input pin of UART1. (ix) TI2, TI3 (Timer input 2, 3) ... input These are the external count clock input pins of timer 2 and timer 3. (x) TO2, TO3 (Timer output 2, 3) ... output These are the pulse signal output pins of timer 2 and timer 3. User's Manual U13850EJ6V0UD 83 CHAPTER 2 PIN FUNCTIONS (4) P30 to P37 (Port 3) *** 3-state I/O P30 to P37 constitute an 8-bit I/O port that can be set to input or output in 1-bit units. P30 to P37 can also function as input or output pins for the timer/counter, an address bus (A13 to A15) when memory is expanded externally, and serial interface I/O. P33 and P34 can be selected as normal output or N-ch open-drain output. (a) Port function P30 to P37 can be set to input or output in 1-bit units using the port 3 mode register (PM3). (b) Alternate functions (i) TI00, TI01, TI10, TI11, TI4, TI5 (Timer input 00, 01, 10, 11, 4, 5) *** input These are the external count clock input pins of timer 0, timer 1, timer 4, and timer 5. (ii) TO0, TO1, TO4, TO5 (Timer output 0, 1, 4, 5) *** output These are the pulse signal output pins of timer 0, timer 1, timer 4, and timer 5. (iii) A13 to A15 (Address bus 13 to 15) *** output These comprise an address bus that is used for external access. These pins operate as the A13 to A15 bit address output pins within a 22-bit address. The output changes in synchronization with the rising edge of the clock in the T1 state of the bus cycle. When the timing sets the bus cycle to inactive, the previous bus cycle's address is retained. (iv) SI4 (Serial input 4) *** input This is the serial receive data input pin of CSI4. (v) SO4 (Serial output 4) *** output This is the serial transmit data output pin of CSI4. (vi) SCK4 (Serial clock 4) *** 3-state I/O This is the I/O pin of the CSI4 serial clock. 84 User's Manual U13850EJ6V0UD CHAPTER 2 PIN FUNCTIONS (5) P40 to P47 (Port 4) *** 3-state I/O P40 to P47 constitute an 8-bit I/O port that can be set to input or output pins in 1-bit units. P40 to P47 can also function as a time division address/data bus (AD0 to AD7) when memory is expanded externally. The I/O signal level uses the bus interface power supply pins BVDD and BVSS as a reference. (a) Port function P40 to P47 can be set to input or output in 1-bit units using the port 4 mode register (PM4). (b) Alternate functions (External expansion function) P40 to P47 can be set as AD0 to AD7 using the memory expansion mode register (MM). (i) AD0 to AD7 (Address/data bus 0 to 7) *** 3-state I/O These comprise a multiplexed address/data bus that is used for external access. At the address timing (T1 state), these pins operate as AD0 to AD7 (22-bit address) output pins. At the data timing (T2, TW, T3), they operate as the lower 8-bit I/O bus pins for 16-bit data. The output changes in synchronization with the rising edge of the clock in each state within the bus cycle. When the timing sets the bus cycle to inactive, these pins go into a high-impedance state. (6) P50 to P57 (Port 5) *** 3-state I/O P50 to P57 constitute an 8-bit I/O port that can be set to input or output in 1-bit units. P50 to P57 can also function as I/O port pins and as a time division address/data buses (AD8 to AD15) when memory is expanded externally. The I/O signal level uses the bus interface power supply pins BVDD and BVSS as reference. (a) Port function P50 to P57 can be set to input or output in 1-bit units using the port 5 mode register (PM5). (b) Alternate functions (External expansion function) P50 to P57 can be set as AD8 to AD15 using the memory expansion mode register (MM). (i) AD8 to AD15 (Address/data bus 8 to 15) *** 3-state I/O These comprise a multiplexed address/data bus that is used for external access. At the address timing (T1 state), these pins operate as AD8 to AD15 (22-bit address) output pins. At the data timing (T2, TW, T3), they operate as the higher 8-bit I/O bus pins for 16-bit data. The output changes in synchronization with the rising edge of the clock in each state within the bus cycle. When the timing sets the bus cycle to inactive, these pins go into a high-impedance state. User's Manual U13850EJ6V0UD 85 CHAPTER 2 PIN FUNCTIONS (7) P60 to P65 (Port 6) *** 3-state I/O P60 to P65 constitute a 6-bit I/O port that can be set to input or output in 1-bit units. P60 to P65 can also function as an address bus (A16 to A21) when memory is expanded externally. When the port 6 is accessed in 8-bit units, the higher 2 bits of port 6 are ignored when they are written to and 00 is read when they are read. The I/O signal level uses the bus interface power supply pins BVDD and BVSS as reference. (a) Port function P60 to P65 can be set to input or output in 1-bit units using the port 6 mode register (PM6). (b) Alternate functions (External expansion function) P60 to P65 can be set as A16 to A21 using the memory expansion mode register (MM). (i) A16 to A21 (Address bus 16 to 21) *** output These comprise an address bus that is used for external access. These pins operate as the higher 6bit address output pins within a 22-bit address. The output changes in synchronization with the rising edge of the clock in the T1 state of the bus cycle. When the timing sets the bus cycle to inactive, the previous bus cycle's address is retained. (8) P70 to P77 (Port 7), P80 to P83 (Port 8) *** input P70 to P77 constitute an 8-bit input-only port in which all the pins are fixed to input mode. P80 to P83 constitute a 4-bit input-only port in which all the pins are fixed to input. P70 to P77 and P80 to P83 can also function as analog input pins for the A/D converter. (a) Port function P70 to P77 and P80 to P83 are input-only pins. (b) Alternate functions P70 to P77 also function as ANI0 to ANI7 and P80 to P83 also function as ANI8 to ANI11. (i) ANI0 to ANI11 (Analog input 0 to 11) *** input These are analog input pins for the A/D converter. Connect a capacitor between these pins and AVSS to prevent noise-related operation faults. Also, do not apply voltage that is outside the range for AVSS and AVREF to pins that are being used as inputs for the A/D converter. If it is possible for noise above the AVREF range or below the AVSS to enter, clamp these pins using a diode that has a small VF value. 86 User's Manual U13850EJ6V0UD CHAPTER 2 PIN FUNCTIONS (9) P90 to P96 (Port 9) *** 3-state I/O P90 to P96 constitute a 7-bit I/O port that can be set to input or output pins in 1-bit units. P90 to P96 can also function as control signal output pins and bus hold control signal output pins when memory is expanded externally. During 8-bit access of port 9, the highest bit is ignored during a write operation and is read as a "0" during a read operation. The I/O signal level uses the bus interface power supply pins BVDD and BVSS as a reference. (a) Port function P90 to P96 can be set to input or output in 1-bit units using the port 9 mode register (PM9). (b) Alternate functions (External expansion function) P90 to P96 can be set to operate as control signal outputs for external memory expansion using the memory expansion mode register (MM). (i) LBEN (Lower byte enable) *** output This is a lower byte enable signal output pin for the external 16-bit data bus. During byte access of odd-numbered addresses, these pins are set as inactive (high level). The output changes in synchronization with the rising edge of the clock in the T1 state of the bus cycle. When the timing sets the bus cycle as inactive, the previous bus cycle's address is retained. (ii) UBEN (Upper byte enable) *** output This is an upper byte enable signal output pin for the external 16-bit data bus. During byte access of even-numbered addresses, these pins are set as inactive (high level). The output changes in synchronization with the rising edge of the clock in the T1 state of the bus cycle. When the timing sets the bus cycle as inactive, the previous bus cycle's address is retained. Access UBEN LBEN AD0 Word access 0 0 0 Halfword access 0 0 0 Even-numbered address 1 0 0 Odd-numbered address 0 1 1 Byte access (iii) R/W (Read/write status) *** output This is an output pin for the status signal pin that indicates whether the bus cycle is a read cycle or write cycle during external access. High level is set during a read cycle and low level is set during a write cycle. The output changes in synchronization with the rising edge of the clock in the T1 state of the bus cycle. High level is set when the timing sets the bus cycle as inactive. (iv) DSTB (Data strobe) *** output This is an output pin for the external data bus's access strobe signal. Output becomes active (low level) during the T2 and TW states of the bus cycle. Output becomes inactive (high level) when the timing sets the bus cycle as inactive. User's Manual U13850EJ6V0UD 87 CHAPTER 2 PIN FUNCTIONS (v) ASTB (Address strobe) *** output This is an output pin for the external address bus's latch strobe signal. Output becomes active (low level) in synchronization with the falling edge of the clock during the T1 state of the bus cycle, and becomes inactive (high level) in synchronization with the falling edge of the clock during the T3 state of the bus cycle. Output becomes inactive when the timing sets the bus cycle as inactive. (vi) HLDAK (Hold acknowledge) *** output This is an output pin for the acknowledge signal that indicates high impedance status for the address bus, data bus, and control bus when the V850/SB1 and V850/SB2 receive a bus hold request. The address bus, data bus, and control bus are set to high impedance status when this signal is active. (vii) HLDRQ (Hold request) *** input This is an input pin by which an external device requests the V850/SB1 and V850/SB2 to release the address bus, data bus, and control bus. This pin accepts asynchronous input for CLKOUT. When this pin is active, the address bus, data bus, and control bus are set to high impedance status. This occurs either when the V850/SB1 and V850/SB2 complete execution of the current bus cycle or immediately if no bus cycle is being executed, then the HLDAK signal is set as active and the bus is released. (viii) WRL (Write strobe low level data) *** output This is a write strobe signal output pin for the lower data in the external 16-bit data bus. Output occurs during the write cycle, similar to DSTB. (ix) WRH (Write strobe high level data) *** output This is a write strobe signal output pin for the higher data in the external 16-bit data bus. Output occurs during the write cycle, similar to DSTB. (x) RD (Read strobe) *** output This is a read strobe signal output pin for the external 16-bit data bus. Output occurs during the read cycle, similar to DSTB. 88 User's Manual U13850EJ6V0UD CHAPTER 2 PIN FUNCTIONS (10) P100 to P107 (Port 10) *** 3-state I/O P100 to P107 constitute an 8-bit I/O port that can be set to input or output in 1-bit units. P100 to P107 can also function as a real-time output port, an address bus (A5 to A12) when memory is expanded externally, key return input, and IEBus data I/O (V850/SB2 only). P100 to P107 can be selected as normal output or N-ch open-drain output. (a) Port function P100 to P107 can be set to input or output in 1-bit units using the port 10 mode register (PM10). (b) Alternate functions (i) RTP0 to RTP7 (Real-time output port 0 to 7) *** output These pins comprise a real-time output port. (ii) A5 to A12 (Address bus 5 to 12) *** output These comprise the address bus that is used for external access. These pins operate as the A5 to A12 bit address output pins within a 22-bit address. The output changes in synchronization with the rising edge of the clock in the T1 state of the bus cycle. When the timing sets the bus cycle as inactive, the previous bus cycle's address is retained. (iii) KR0 to KR7 (Key return 0 to 7) ... input These are key return input pins. Their operations are specified by the key return mode register (KRM). (iv) IERX (IEBus receive data) ... input This is an IEBus data input signal. This pin is only available in the V850/SB2. (v) IETX (IEBus transmit data) ... output This is an IEBus data output signal. This pin is only available in the V850/SB2. User's Manual U13850EJ6V0UD 89 CHAPTER 2 PIN FUNCTIONS (11) P110 to P113 (Port 11) *** 3-state I/O P110 to P113 constitute a 4-bit I/O port that can be set to input or output in 1-bit units. P110 to P113 can also function as an address bus (A1 to A4) when memory is expanded externally, signal (WAIT) that inserts waits into the bus cycle and a control. (a) Port function P110 to P113 can be set to input or output in 1-bit units using the port 11 mode register (PM11). (b) Alternate functions (i) A1 to A4 (Address bus 1 to 4) *** output These comprise the address bus that is used for external access. These pins operate as the lower 4bit address output pins within a 22-bit address. The output changes in synchronization with the rising edge of the clock in the T1 state of the bus cycle. When the timing sets the bus cycle as inactive, the previous bus cycle's address is retained. (ii) WAIT (Wait) *** input This is an input pin for the control signal used to insert waits into the bus cycle. This pin is sampled at the falling edge of the clock during the T2 or TW state of the bus cycle. ON/OFF switching of the wait function is performed by the port alternate function control register (PAC). Caution Because the supply voltage to the I/O buffer of the WAIT pin is EVDD, if the voltage of EVDD and that of BVDD differ, use EVDD as the voltage of the external wait signal, instead of BVDD. (12) RESET (Reset) *** input The RESET pin is an asynchronous input and inputs a signal that has a constant low level width regardless of the status of the operating clock. When this signal is input, a system reset is executed as the first priority ahead of all other operations. In addition to being used for ordinary initialization/start operations, this pin can also be used to release a standby mode (HALT, IDLE, or STOP mode). (13) REGC (Regulator control) ... input This pin is used to connect the capacitor for the regulator. (14) CLKOUT (Clock out) ... output This pin outputs the bus clock generated internally. (15) X1, X2 (Crystal) These pins are used to connect the resonator that generates the main clock. (16) XT1, XT2 (Crystal for subclock) These pins are used to connect the resonator that generates the subclock. (17) AVDD (Analog VDD) This is the analog positive power supply pin for the A/D converter or alternate-function port. 90 User's Manual U13850EJ6V0UD CHAPTER 2 PIN FUNCTIONS (18) AVSS (Analog VSS) This is the ground pin for the A/D converter or alternate-function port. (19) AVREF (Analog reference voltage) ... input This is the reference voltage supply pin for the A/D converter. (20) BVDD (Power supply for bus interface) This is the positive power supply pin for the bus interface and its alternate-function ports. (21) BVSS (Ground for bus interface) This is the ground pin for the bus interface and its alternate-function ports. (22) EVDD (Power supply for port) This is the positive power supply pin for I/O ports and alternate-function pins (except for the alternate-function ports of the bus interface). (23) EVSS (Ground for port) This is the ground pin for I/O ports and alternate-function pins (except for the alternate-function ports of the bus interface). (24) VDD (Power supply) This is the positive power supply pin. All VDD pins should be connected to a positive power supply. (25) VSS (Ground) This is the ground pin. All VSS pins should be grounded. (26) VPP (Programming power supply) This is the positive power supply pin used for flash memory programming mode. This pin is used in the flash memory versions. In normal operation mode, connect directly to VSS. (27) IC (Internally connected) This is an internally connected pin used in the mask ROM versions. Be sure to connect directly to VSS. User's Manual U13850EJ6V0UD 91 CHAPTER 2 PIN FUNCTIONS 2.4 Pin I/O Circuit Types, I/O Buffer Power Supplies and Connection of Unused Pins (1/2) Pin Alternate Function I/O Circuit Type I/O Buffer Power Supply P00 NMI P01 to P04 INTP0 to INTP3 P05 INTP4/ADTRG P06 INTP5/RTPTRG P07 INTP6 P10 SI0/SDA0 P11 SO0 P12 SCK0/SCL0 10-A P13 SI1/RXD0 8-A P14 SO1/TXD0 26 P15 SCK1/ASCK0 P20 SI2/SDA1 P21 SO2 P22 SCK2/SCL1 10-A P23 SI3/RXD1 8-A P24 SO3/TXD1 26 P25 SCK3/ASCK1 10-A P26, P27 TI2/TO2, TI3/TO3 8-A P30, P31 TI00, TI01 P32 TI10/SI4 P33 TI11/SO4 P34 TO0/A13/SCK4 P35 TO1/A14 5-A P36 TI4/TO4/A15 8-A P37 TI5/TO5 P40 to P47 AD0 to AD7 P50 to P57 AD8 to AD15 P60 to P65 A16 to A21 P70 to P77 ANI0 to ANI7 P80 to P83 ANI8 to ANI11 92 EVDD 8-A Recommended Connection Method Input: Independently connect to EVDD or EVSS via a resistor Output: Leave open EVDD 10-A 26 10-A EVDD 10-A 26 EVDD 8-A 10-A BVDD 5 Input: Independently connect to BVDD or BVSS via a resistor Output: Leave open AVDD 9 Independently connect to AVDD or AVSS via a resistor User's Manual U13850EJ6V0UD CHAPTER 2 PIN FUNCTIONS (2/2) Pin Alternate Function P90 LBEN/WRL P91 UBEN P92 R/W/WRH P93 DSTB/RD P94 ASTB P95 HLDAK P96 HLDRQ I/O Circuit Type I/O Buffer Power Supply BVDD 5 Recommended Connection Method Input: Independently connect to EVDD or EVSS via a resistor Output: Leave open P100 to P103 RTP0/A5/KR0 to RTP3/A8/KR3 P104 RTP4/A9/KR4/IERX P105 RTP5/A10/KR5/IETX P106, P107 RTP6/A11/KR6, RTP7/A12/KR7 P110 A1/WAIT EVDD 10-A Input: Independently connect to EVDD or EVSS via a resistor Output: Leave open EVDD 5-A P111 to P113 A2 to A4 AVREF - - - Connect to AVSS via a resistor CLKOUT - BVDD 4 Leave open RESET - EVDD 2 - X1 - - - - X2 - - - - XT1 - - 16 Connect to VSS via a resistor XT2 - - 16 Leave open - - - Connect to VSS IC - - - Connect directly to VSS VSS - - - - AVDD - - - - AVSS - - - - BVDD - - - - BVSS - - - - EVDD - - - - EVSS - - - - Note 1 VPP Note 2 Notes 1. 2. Flash memory versions only Mask ROM versions only User's Manual U13850EJ6V0UD 93 CHAPTER 2 PIN FUNCTIONS 2.5 Pin I/O Circuits (1/2) Type 2 Type 5-A VDD IN Pullup enable P-ch VDD Data P-ch IN/OUT Schmitt-triggered input with hysteresis characteristics Output disable N-ch Input enable Type 8-A Type 4 VDD Data VDD P-ch Pullup enable Data OUT P-ch VDD P-ch IN/OUT Output N-ch disable Output disable N-ch Push-pull output that can be set for high impedance output (both P-ch and N-ch off). Type 5 Type 9 V DD Data P-ch P-ch N- ch IN/OUT Output Comparator N- ch VREF (threshold voltage) disable Input enable 94 + - Input enable User's Manual U13850EJ6V0UD CHAPTER 2 PIN FUNCTIONS (2/2) Type 10-A Type 26 VDD VDD Pullup Pullup P-ch enable VDD Data P-ch enable VDD Data P-ch P-ch IN/OUT Open drain IN/OUT Open drain N-ch Output disable Output disable N-ch Type 16 Feedback cut-off P-ch XT1 XT2 User's Manual U13850EJ6V0UD 95 CHAPTER 3 CPU FUNCTIONS The CPU of the V850/SB1 and V850/SB2 is based on RISC architecture and executes most instructions in one clock cycle by using a 5-stage pipeline. 3.1 Features * Minimum instruction execution time V850/SB1 (A version, B version): 50 ns (@20 MHz internal operation) V850/SB2 (A version, B version): 79 ns (@12.58 MHz internal operation) V850/SB2 (H version): 53 ns (@18.87 MHz internal operation) * Address space: 16 MB linear * Thirty-two 32-bit general-purpose registers * Internal 32-bit architecture * Five-stage pipeline control * Multiplication/division instructions * Saturated operation instructions * One-clock 32-bit shift instruction * Load/store instruction with long/short format * Four types of bit manipulation instructions * SET1 * CLR1 * NOT1 * TST1 96 User's Manual U13850EJ6V0UD CHAPTER 3 CPU FUNCTIONS 3.2 CPU Register Set The CPU registers of the V850/SB1 and V850/SB2 can be classified into two categories: a general-purpose program register set and a dedicated system register set. All the registers are 32 bits wide. For details, refer to V850 Series Architecture User's Manual Figure 3-1. CPU Register Set Program register set 31 r0 r1 System register set 0 31 0 Zero Register EIPC Exception/Interrupt PC Reserved for Address Register EIPSW Exception/Interrupt PSW r2 r3 Stack Pointer (SP) r4 Global Pointer (GP) FEPC Fatal Error PC r5 Text Pointer (TP) FEPSW Fatal Error PSW 31 0 r6 r7 31 r8 ECR 0 Exception Cause Register r9 r10 31 r11 PSW 0 Program Status Word r12 r13 r14 r15 r16 r17 r18 r19 r20 r21 r22 r23 r24 r25 r26 r27 r28 r29 r30 Element Pointer (EP) r31 Link Pointer (LP) 31 PC 0 Program Counter User's Manual U13850EJ6V0UD 97 CHAPTER 3 CPU FUNCTIONS 3.2.1 Program register set The program register set includes general-purpose registers and a program counter. (1) General-purpose registers Thirty-two general-purpose registers, r0 to r31, are available. Any of these registers can be used as a data variable or address variable. However, r0 and r30 are implicitly used by instructions, and care must be exercised when using these registers. Also, r1, r3, r4, r5, and r31 are implicitly used by the assembler and C compiler. Therefore, before using these registers, their contents must be saved so that they are not lost. The contents must be restored to the registers after the registers have been used. There are cases when r2 is used by the real-time OS. If r2 is not used by the real-time OS, r2 can be used as a variable register. Table 3-1. Program Registers Name Usage Operation r0 Zero register Always holds 0 r1 Assembler-reserved register Working register for generating 32-bit immediate r2 Address/data variable register (when r2 is not used by the real-time OS) r3 Stack pointer Used to generate stack frame when function is called r4 Global pointer Used to access global variable in data area r5 Text pointer Register to indicate the start of the text areaNote r6 to r29 Address/data variable registers r30 Element pointer Base pointer when memory is accessed r31 Link pointer Used by compiler when calling function PC Program counter Holds instruction address during program execution Note Area in which program code is mapped. (2) Program counter (PC) This register holds the address of the instruction under execution. The lower 24 bits of this register are valid, and bits 31 to 24 are fixed to 0. If a carry occurs from bit 23 to 24, it is ignored. Bit 0 is fixed to 0, and branching to an odd address cannot be performed. After reset: 00000000H Symbol PC 98 31 24 Fixed to 0 23 1 Instruction address under execution User's Manual U13850EJ6V0UD 0 0 CHAPTER 3 CPU FUNCTIONS 3.2.2 System register set System registers control the status of the CPU and hold interrupt information. Table 3-2. System Register Numbers No. System Register Name Usage Operation Interrupt status saving registers These registers save the PC and PSW when an exception or interrupt occurs. Because only one set of these registers is available, their contents must be saved when multiple interrupts are enabled. NMI status saving registers These registers save PC and PSW when NMI occurs. 0 EIPC 1 EIPSW 2 FEPC 3 FEPSW 4 ECR Interrupt source register If exception, maskable interrupt, or NMI occurs, this register will contain information referencing the interrupt source. The higher 16 bits of this register are called FECC, to which exception code of NMI is set. The lower 16 bits are called EICC, to which exception code of exception/interrupt is set. 5 PSW Program status word A program status word is a collection of flags that indicate program status (instruction execution result) and CPU status. 6 to 31 Reserved To read/write these system registers, specify a system register number indicated by the system register load/store instruction (LDSR or STSR instruction). (1) Interrupt source register (ECR) After reset: 00000000H Symbol 31 ECR 16 15 FECC 0 EICC FECC Exception code of NMI (For exception code, refer to Table 5-1.) EICC Exception code of exception/interrupt User's Manual U13850EJ6V0UD 99 CHAPTER 3 CPU FUNCTIONS (2) Program status word (PSW) (1/2) After reset: 00000020H 31 8 PSW RFU RFU 6 NP EP 5 4 3 ID SAT CY 2 1 0 OV S Z Reserved field (fixed to 0). NP Non-maskable interrupt (NMI) servicing status 0 NMI servicing not under execution. 1 NMI servicing under execution. This flag is set (1) when an NMI is acknowledged, and disables multiple interrupts. For details, refer to 5.2.3 NP flag. EP Exception processing status 0 Exception processing not under execution. 1 Exception processing under execution. This flag is set (1) when an exception is generated. Interrupt requests can be acknowledged when this bit is set. For details, refer to 5.4.3 EP flag. ID Maskable interrupt servicing specification 0 Maskable interrupt acknowledgment enabled (EI). 1 Maskable interrupt acknowledgment disabled (DI). This flag is set (1) when a maskable interrupt request is acknowledged. For details, refer to 5.3.6 ID flag. SATNote Saturation detection of operation result of saturation operation instruction 0 Not saturated. This flag is not cleared (0) if the result of saturated operation instruction execution is not saturated while this flag is set (1). To clear (0) this flag, write the PSW directly. 1 Saturated. CY Detection of carry or borrow of operation result 0 Carry or borrow has not occurred. 1 Carry or borrow occurred. OVNote 100 7 Detection of overflow during operation 0 Overflow has not occurred. 1 Overflow occurred. User's Manual U13850EJ6V0UD CHAPTER 3 CPU FUNCTIONS (2/2) S Note Detection of operation result positive/negative 0 The operation result was positive or 0. 1 The operation result was negative. Z Detection of operation result zero 0 The operation result was not 0. 1 The operation result was 0. Note The result of a saturation-processed operation is determined by the contents of the OV and S bits in the saturation operation. Simply setting (1) the OV bit will set (1) the SAT bit in a saturation operation. Status of operation result Flag status Saturation-processed operation result SAT OV S Maximum positive value exceeded 1 1 0 7FFFFFFFH Maximum negative value exceeded 1 1 1 80000000H 0 0 Operation result itself Positive (not exceeding the maximum) Retains Negative (not exceeding the maximum) the value 1 before operation User's Manual U13850EJ6V0UD 101 CHAPTER 3 CPU FUNCTIONS 3.3 Operation Modes The V850/SB1 and V850/SB2 have the following operation modes. (1) Normal operation mode (single-chip mode) After the system has been released from the reset status, the pins related to the bus interface are set for port mode, execution branches to the reset entry address of the internal ROM, and instruction processing written in the internal ROM is started. However, external expansion mode that connects external device to external memory area is enabled by setting in the memory expansion mode register (MM) by instruction. (2) Flash memory programming mode This mode is provided only in the flash memory versions. The internal flash memory is programmable or erasable when the VPP voltage is applied to the VPP pin. VPP 0 7.8 V VDD 102 Operation Mode Normal operation mode Flash memory programming mode Setting prohibited User's Manual U13850EJ6V0UD CHAPTER 3 CPU FUNCTIONS 3.4 Address Space 3.4.1 CPU address space The CPUs of the V850/SB1 and V850/SB2 are of 32-bit architecture and support up to 4 GB of linear address space (data space) during operand addressing (data access). When referencing instruction addresses, linear address space (program space) of up to 16 MB is supported. The CPU address space is shown below. Figure 3-2. CPU Address Space CPU address space FFFFFFFFH Data area (4 GB linear) 01000000H 00FFFFFFH Program area (16 MB linear) 00000000H User's Manual U13850EJ6V0UD 103 CHAPTER 3 CPU FUNCTIONS 3.4.2 Image The core CPU supports 4 GB of "virtual" addressing space, or 256 memory blocks, each containing 16 MB memory locations. In actuality, the same 16 MB block is accessed regardless of the values of bits 31 to 24 of the CPU address. The image of the virtual addressing space is shown below. Because the higher 8 bits of a 32-bit CPU address are ignored and the CPU address is only seen as a 24-bit external physical address, the physical location xx000000H is equally referenced by multiple address values 00000000H, 01000000H, 02000000H, ... FE000000H, FF000000H. Figure 3-3. Image on Address Space CPU address space FFFFFFFFH Image FF000000H FEFFFFFFH Image Physical address space FE000000H FDFFFFFFH On-chip peripheral I/O xxFFFFFFH Internal RAM Image (Access prohibited) 02000000H 01FFFFFFH Internal ROM Image 01000000H 00FFFFFFH Image 00000000H 104 User's Manual U13850EJ6V0UD xx000000H CHAPTER 3 CPU FUNCTIONS 3.4.3 Wrap-around of CPU address space (1) Program space Of the 32 bits of the PC (program counter), the higher 8 bits are fixed to 0, and only the lower 24 bits are valid. Even if a carry or borrow occurs from bit 23 to 24 as a result of branch address calculation, the higher 8 bits ignore the carry or borrow and remain 0. Therefore, the lower-limit address of the program space, address 00000000H, and the upper-limit address 00FFFFFFH are contiguous addresses, and the program space is wrapped around at the boundary of these addresses. Caution No instruction can be fetched from the 4 KB area of 00FFF000H to 00FFFFFFH because this area is defined as peripheral I/O area. Therefore, do not execute any branch operation instructions in which the destination address will reside in any part of this area. Figure 3-4. Program Space Program space 00FFFFFEH 00FFFFFFH (+) direction (-) direction 00000000H 00000001H Program space (2) Data space The result of operand address calculation that exceeds 32 bits is ignored. Therefore, the lower-limit address of the program space, address 00000000H, and the upper-limit address FFFFFFFFH are contiguous addresses, and the data space is wrapped around at the boundary of these addresses. Figure 3-5. Data Space Data space FFFFFFFEH FFFFFFFFH (+) direction (-) direction 00000000H 00000001H Data space User's Manual U13850EJ6V0UD 105 CHAPTER 3 CPU FUNCTIONS 3.4.4 Memory map The V850/SB1 and V850/SB2 reserve areas as shown below. Figure 3-6. Memory Map Single-chip mode Single-chip mode (external expansion mode) On-chip peripheral On-chip peripheral I/O area I/O area Internal RAM area Internal RAM area (Reserved) External memory area On-chip flash memory/ ROM area On-chip flash memory/ xxFFFFFFH 4 KB xxFFF000H xxFFEFFFH 28 KB xxFF8000H xxFF7FFFH 16 MB xx100000H xx0FFFFFH ROM area xx000000H 106 User's Manual U13850EJ6V0UD 1 MB CHAPTER 3 CPU FUNCTIONS 3.4.5 Area (1) Internal ROM/flash memory area An area of 1 MB maximum is reserved for the internal ROM/flash memory area. (a) V850/SB1 (PD703031A, 703031AY, 703031B, 703031BY) V850/SB2 (PD703034A, 703034AY, 703034B, 703034BY) 128 KB are available for the addresses xx000000H to xx01FFFFH. Addresses xx020000H to xx0FFFFFH are an access-prohibited area Figure 3-7. Internal ROM Area (128 KB) xx0FFFFFH Access-prohibited area xx020000H xx01FFFFH xx000000H Internal ROM (b) V850/SB1 (PD703033A, 703033AY, 70F3033A, 70F3033AY, 703033B, 703033BY, 70F3033B, 70F3033BY) V850/SB2 (PD703035A, 703035AY, 70F3035A, 70F3035AY, 703035B, 703035BY, 70F3035B, 70F3035BY) 256 KB are available for the addresses xx000000H to xx03FFFFH. Addresses xx040000H to xx0FFFFFH are an access-prohibited area Figure 3-8. Internal ROM/Flash Memory Area (256 KB) xx0FFFFFH Access-prohibited area xx040000H xx03FFFFH Internal ROM/ flash memory xx000000H User's Manual U13850EJ6V0UD 107 CHAPTER 3 CPU FUNCTIONS (c) V850/SB1 (PD703030B, 703030BY, 70F3030B, 70F3030BY) V850/SB2 (PD703036H, 703036HY, 70F3036H, 70F3036HY) 384 KB are available for the addresses xx000000H to xx05FFFFH. Addresses xx060000H to xx0FFFFFH are an access-prohibited area Figure 3-9. Internal ROM/Flash Memory Area (384 KB) xx0FFFFFH Access-prohibited area xx060000H xx05FFFFH Internal ROM/ flash memory xx000000H (d) V850/SB1 (PD703032A, 703032AY, 70F3032A, 70F3032AY, 703032B, 703032BY, 70F3032B, 70F3032BY) V850/SB2 (PD703037A, 703037AY, 70F3037A, 70F3037AY, 703037H, 703037HY, 70F3037H, 70F3037HY) 512 KB are available for the addresses xx000000H to xx07FFFFH. Addresses xx080000H to xx0FFFFFH are an access-prohibited area Figure 3-10. Internal ROM/Flash Memory Area (512 KB) xx0FFFFFH Access-prohibited area xx080000H xx07FFFFH Internal ROM/ flash memory xx000000H 108 User's Manual U13850EJ6V0UD CHAPTER 3 CPU FUNCTIONS Interrupt/exception table The V850/SB1 and V850/SB2 increase the interrupt response speed by assigning handler addresses corresponding to interrupts/exceptions. The collection of these handler addresses is called an interrupt/exception table, which is located in the internal ROM area. When an interrupt/exception request is granted, execution jumps to the handler address, and the program written at that memory address is executed. The sources of interrupts/exceptions, and the corresponding addresses are shown below. Table 3-3. Interrupt/Exception Table Start Address of Interrupt/Exception Table Interrupt/Exception Source Start Address of Interrupt/Exception Table Interrupt/Exception Source 00000000H RESET 000001D0H INTTM6 00000010H NMI 000001E0H INTTM7 00000020H INTWDT 000001F0H INTIIC0Note/INTCSI0 00000040H TRAP0n (n = 0 to F) 00000200H INTSER0 00000050H TRAP1n (n = 0 to F) 00000210H INTSR0/INTCSI1 00000060H ILGOP 00000220H INTST0 00000080H INTWDTM 00000230H INTCSI2 00000090H INTP0 00000240H INTIIC1Note 000000A0H INTP1 00000250H INTSER1 000000B0H INTP2 00000260H INTSR1/INTCSI3 000000C0H INTP3 00000270H INTST1 000000D0H INTP4 00000280H INTCSI4 000000E0H INTP5 00000290H INTIE1 (V850/SB2 only) 000000F0H INTP6 000002A0H INTIE2 (V850/SB2 only) 00000140H INTWTNI 000002B0H INTAD 00000150H INTTM00 000002C0H INTDMA0 00000160H INTTM01 000002D0H INTDMA1 00000170H INTTM10 000002E0H INTDMA2 00000180H INTTM11 000002F0H INTDMA3 00000190H INTTM2 00000300H INTDMA4 000001A0H INTTM3 00000310H INTDMA5 000001B0H INTTM4 00000320H INTWTN 000001C0H INTTM5 00000330H INTKR 2 Note Available only in the Y versions (products with on-chip I C). User's Manual U13850EJ6V0UD 109 CHAPTER 3 CPU FUNCTIONS (2) Internal RAM area An area of 28 KB maximum is reserved for the internal RAM area. (a) V850/SB1 (PD703031B, 703031BY), V850/SB2 (PD703034B, 703034BY) 8 KB are available for the addresses xxFFD000H to xxFFEFFFH. Addresses xxFF8000H to xxFFCFFFH are an access-prohibited area Figure 3-11. Internal RAM Area (8 KB) xxFFEFFFH Internal RAM xxFFD000H xxFFCFFFH Access-prohibited area xxFF8000H (b) V850/SB1 (PD703031A, 703031AY), V850/SB2 (PD703034A, 703034AY) 12 KB are available for the addresses xxFFC000H to xxFFEFFFH. Addresses xxFF8000H to xxFFBFFFH are an access-prohibited area Figure 3-12. Internal RAM Area (12 KB) xxFFEFFFH Internal RAM xxFFC000H xxFFBFFFH Access-prohibited area xxFF8000H 110 User's Manual U13850EJ6V0UD CHAPTER 3 CPU FUNCTIONS (c) V850/SB1 (PD703033A, 703033AY, 70F3033A, 70F3033AY, 703033B, 703033BY, 70F3033B, 70F3033BY) V850/SB2 (PD703035A, 703035AY, 70F3035A, 70F3035AY, 703035B, 703035BY, 70F3035B, 70F3035BY) 16 KB are available for the addresses xxFFB000H to xxFFEFFFH. Addresses xxFF8000H to xxFFAFFFH are an access-prohibited area Figure 3-13. Internal RAM Area (16 KB) xxFFEFFFH Internal RAM xxFFB000H xxFFAFFFH Access-prohibited area xxFF8000H (d) V850/SB1 (PD703030B, 703030BY, 70F3030B, 70F3030BY, 703032A, 703032AY, 70F3032A, 70F3032AY, 703032BY, 70F3032B, 70F3032BY) V850/SB2 (PD703036H, 703036HY, 70F3036H, 70F3036HY, 703037A, 703037AY, 70F3037A, 70F3037AY, 703037H, 703037HY, 70F3037H, 70F3037HY) 24 KB are available for the addresses xxFF9000H to xxFFEFFFH. Addresses xxFF8000H to xxFF8FFFH are an access-prohibited area Figure 3-14. Internal RAM Area (24 KB) xxFFEFFFH Internal RAM xxFF9000H xxFF8FFFH xxFF8000H Access-prohibited area User's Manual U13850EJ6V0UD 111 CHAPTER 3 CPU FUNCTIONS (3) On-chip peripheral I/O area A 4 KB area of addresses FFF000H to FFFFFFH is reserved as an on-chip peripheral I/O area. The V850/SB1 and V850/SB2 are provided with a 1 KB area of addresses FFF000H to FFF3FFH as a physical on-chip peripheral I/O area, and its image can be seen on the rest of the area (FFF400H to FFFFFFH). Peripheral I/O registers associated with the operation mode specification and the state monitoring for the on-chip peripherals are all memory-mapped to the on-chip peripheral I/O area. Program fetches are not allowed in this area. Figure 3-15. On-Chip Peripheral I/O Area xxFFFFFFH Image xxFFFC00H xxFFFBFFH Physical on-chip peripheral I/O Image 3FFH xxFFF800H Peripheral I/O xxFFF7FFH Image 000H xxFFF400H xxFFF3FFH Image xxFFF000H Cautions 1. The least significant bit of an address is not decoded since all registers reside on an even address. If an odd address (2n + 1) in the peripheral I/O area is referenced (accessed in byte units), the register at the next lowest even address (2n) will be accessed. 2. If a register that can be accessed in byte units is accessed in halfword units, the higher 8 bits become undefined, if the access is a read operation. If a write access is made, only the data in the lower 8 bits is written to the register. 3. If a register with n address that can be accessed only in halfword units is accessed in word units, the operation is replaced with two halfword operations. The first operation (lower 16 bits) accesses to the register with n address and the second operation (higher 16 bits) accesses to the register with n + 2 address. 4. If a register with n address that can be accessed in word units is accessed with a word operation, the operation is replaced with two halfword operations. The first operation (lower 16 bits) accesses to the register with n address and the second operation (higher 16 bits) accesses to the register with n + 2 address. 5. Addresses that are not defined as registers are reserved for future expansion. If these addresses are accessed, the operation is undefined and not guaranteed. 112 User's Manual U13850EJ6V0UD CHAPTER 3 CPU FUNCTIONS (4) External memory The V850/SB1 and V850/SB2 can use an area of up to 16 MB (xx100000H to xxFF7FFFH) for external memory accesses (in single-chip mode: external expansion). 64 K, 256 K, 1 M, or 4 MB of physical external memory can be allocated when the external expansion mode is specified. In the area of other than the physical external memory, the image of the physical external memory can be seen. The internal RAM area and on-chip peripheral I/O area are not subject to external memory access. Figure 3-16. External Memory Area (When Expanded to 64 K, 256 K, or 1 MB) xxFFFFFFH On-chip peripheral I/O Internal RAM xxFF7FFFH Image Physical external memory xFFFFH External memory Image 00000H Image xx100000H Internal ROM xx000000H User's Manual U13850EJ6V0UD 113 CHAPTER 3 CPU FUNCTIONS Figure 3-17. External Memory Area (When Expanded to 4 MB) xxFFFFFFH On-chip peripheral I/O Internal RAM xxFF7FFFH Image xxC00000H xxBFFFFFH Physical external memory 3FFFFFH Image External memory xx800000H xx7FFFFFH 000000H Image xx400000H xx3FFFFFH Image xx100000H xx0FFFFFH Internal ROM xx000000H 3.4.6 External expansion mode The V850/SB1 and V850/SB2 allow external devices to be connected to the external memory space by using the pins of ports 4, 5, 6, and 9. To connect an external device, the port pins must be set in the external expansion mode by using the memory expansion mode register (MM). The address bus (A1 to A15) is set to multiplexed output with data bus (D1 to D15), though separate output is also available by setting the memory address output mode register (MAM) (see the User's Manual of relevant in-circuit emulator about debugging when using the separate bus). Caution Because the A1 pin and WAIT pin are alternate-function pins, the wait function by the WAIT pin cannot be used when using a separate bus (programmable wait can be used however). Similarly, a separate bus cannot be used when the wait function by the WAIT pin is being used. Because the V850/SB1 and V850/SB2 are fixed to single-chip mode in the normal operation mode, the port alternate pins become the port mode, thereby the external memory cannot be used. When the external memory is used (external expansion mode), specify the MM register by the program. 114 User's Manual U13850EJ6V0UD CHAPTER 3 CPU FUNCTIONS (1) Memory expansion mode register (MM) This register sets the mode of each pin of ports 4, 5, 6, and 9. In the external expansion mode, an external device can be connected to the external memory area of up to 4 MB. However, the external device cannot be connected to the internal RAM area, on-chip peripheral I/O area, and internal ROM area in the single-chip mode (and even if the external device is connected physically, it cannot be accessed). The MM register can be read/written in 8-bit or 1-bit units. However, bits 4 to 7 are fixed to 0. After reset: 00H R/W Address: FFFFF04CH Symbol 7 6 5 4 <3> <2> <1> <0> MM 0 0 0 0 MM3 MM2 MM1 MM0 MM3 P95 and P96 operation modes 0 Port mode 1 External expansion mode (HLDAK: P95, HLDRQ: P96) MM2 MM1 MM0 Address space 0 0 0 - 0 1 1 64 KB AD0 to AD8 to LBEN, expansion mode AD7 AD15 UBEN, 1 1 1 0 0 1 Other than above 0 1 x Port 4 Port 5 Port 6 Port 9 Port mode 256 KB A16, R/W, DSTB, expansion mode A17 ASTB, 1 MB A18, WRL, expansion mode A19 WRH, RD 4 MB A20, expansion mode A21 RFU (reserved) Caution Before switching to the external expansion mode, be sure to set P93 and P94 of Port 9 (P9) to 1. Remark For the details of the operation of each port pin, refer to 2.3 Description of Pin Functions. User's Manual U13850EJ6V0UD 115 CHAPTER 3 CPU FUNCTIONS (2) Memory address output mode register (MAM) Sets the mode of ports 3, 10, and 11. Separate output can be set for the address bus (A1 to A15) in the external expansion mode. The MAM register can be written in 8-bit units. If read is performed, undefined values will be read. However, bits 3 to 7 are fixed to 0. After reset: 00H W Address: FFFFF068H Symbol 7 6 5 4 3 2 1 0 MAM 0 0 0 0 0 MAM2 MAM1 MAM0 MAM2 MAM1 MAM0 Address space 0 0 0 - 0 1 0 32 bytes 0 1 1 512 bytes 1 0 0 8 KB 1 0 1 16 KB 1 1 0 32 KB 1 1 1 64 KB Caution Port 11 Port 10 Port 3 Port mode A1 to A4 A5 to A8 A9 to A12 A13 A14 A15 Debugging the memory address output mode register (MAM) an in-circuit emulator is not available. Also, setting the MAM register by software cannot switch to the separate bus. For details, refer to the relevant User's Manual of in-circuit emulator. Remark For details of the operation of each port, see 2.3 Description of Pin Functions. The separate path outputs are output from P34 to P36, P100 to P107, and P110 to P113. The procedure for performing separate path output is shown below. <1> Set the Pn bit of Port m (Pm) used for separate output to 0 (m = 3, 10, 11). <2> Set the PMn bit of the port m mode register (PMm) to 0 (output mode) (m = 3, 10, 11). <3> When the port to be used for the separate path is used as an alternate-function pin for other than the separate path, turn off the function used by the alternate-function pin. <4> Set the memory address output mode register (MAM). <5> Set the memory expansion mode register (MM). Remark m = 3: n = 34 to 36 m = 10: n = 100 to 107 m = 11: n = 110 to 113 116 User's Manual U13850EJ6V0UD CHAPTER 3 CPU FUNCTIONS 3.4.7 Recommended use of address space The architectures of the V850/SB1 and V850/SB2 require that a register that serves as a pointer be secured for address generation in operand data accessing for data space. The address in this pointer register 32 KB can be accessed directly from instruction. However, general-purpose register used as a pointer register is limited. Therefore, by minimizing the deterioration of address calculation performance when changing the pointer value, the number of usable general-purpose registers for handling variables is maximized, and the program size can be saved because instructions for calculating pointer addresses are not required. To enhance the efficiency of using the pointer in connection with the memory maps of the V850/SB1 and V850/SB2, the following points are recommended: (1) Program space Of the 32 bits of the PC (program counter), the higher 8 bits are fixed to 0, and only the lower 24 bits are valid. Therefore, a continuous 16 MB space, starting from address 00000000H, unconditionally corresponds to the memory map of the program space. (2) Data space For the efficient use of resources to be performed through the wrap-around feature of the data space, the continuous 8 MB address spaces 00000000H to 007FFFFFH and FF800000H to FFFFFFFFH of the 4 GB CPU are used as the data space. With the V850/SB1 or V850/SB2, 16 MB physical address space is seen as 256 images in the 4 GB CPU address space. The highest bit (bit 23) of this 24-bit address is assigned as address sign-extended to 32 bits. (a) Application of wrap-around For example, when R = r0 (zero register) is specified for the LD/ST disp16 [R] instruction, an addressing range of 00000000H 32 KB can be referenced with the sign-extended, 16-bit displacement value. All resources including on-chip hardware can be accessed with one pointer. The zero register (r0) is a register set to 0 by the hardware, and eliminates the need for additional registers for the pointer. Figure 3-18. Application of Wrap-Around 0001FFFFH 00007FFFH Internal ROM area 32 KB (R =) 00000000H FFFFF000H On-chip peripheral I/O area Internal RAM area 4 KB 28 KB FFFF8000H User's Manual U13850EJ6V0UD 117 CHAPTER 3 CPU FUNCTIONS Figure 3-19. Recommended Memory Map (Flash Memory Version) Program space FFFFFFFFH Data space On-chip peripheral I/O FFFFF400H FFFFF3FFH FFFFF000H FFFFEFFFH Internal RAM FFFF8000H FFFF7FFFH On-chip peripheral I/O External memory FF800000H FF7FFFFFH xxFFB000H Access-prohibited xxFFAFFFH area xxFF8000H On-chip peripheral I/O Note External memory 00FFF000H 00FFEFFFH Internal RAM Internal ROM 00FF8000H 00FF7FFFH 00800000H 007FFFFFH xxFFF400H xxFFF3FFH xxFFF000H xxFFEFFFH Internal RAM 01000000H 00FFFFFFH 16 MB xxFFFFFFH xxFF7FFFH xx800000H xx7FFFFFH xx100000H xx0FFFFFH xx040000H xx03FFFFH xx000000H External memory External memory 8 MB 00100000H 000FFFFFH 00040000H 0003FFFFH 00000000H Internal ROM Internal ROM Note This area cannot be used as a program area. Remarks 1. The arrows indicate the recommended area. 2. This is a recommended memory map for V850/SB1 (PD70F3033A, 70F3033AY, 70F3033B, 70F3033BY), V850/SB2 (PD70F3035A, 70F3035AY, 70F3035B, 70F3035BY). 118 User's Manual U13850EJ6V0UD CHAPTER 3 CPU FUNCTIONS 3.4.8 Peripheral I/O registers (1/7) Address Function Register Name Symbol R/W Bit Units for Manipulation 1 Bit After Reset 8 Bits 16 Bits 32 Bits 00HNote P1 Port 2 P2 FFFFF006H Port 3 P3 FFFFF008H Port 4 P4 FFFFF00AH Port 5 P5 FFFFF00CH Port 6 P6 FFFFF00EH Port 7 P7 FFFFF010H Port 8 P8 FFFFF012H Port 9 P9 FFFFF014H Port 10 P10 FFFFF016H Port 11 P11 FFFFF020H Port 0 mode register PM0 FFH FFFFF022H Port 1 mode register PM1 3FH FFFFF024H Port 2 mode register PM2 FFH FFFFF026H Port 3 mode register PM3 FFFFF028H Port 4 mode register PM4 FFFFF02AH Port 5 mode register PM5 FFFFF02CH Port 6 mode register PM6 3FH FFFFF032H Port 9 mode register PM9 7FH FFFFF034H Port 10 mode register PM10 FFH FFFFF036H Port 11 mode register PM11 1FH FFFFF040H Port alternate function control register PAC 00H FFFFF04CH Memory expansion mode register MM FFFFF060H Data wait control register DWC FFFFH FFFFF062H Bus cycle control register BCC AAAAH FFFFF064H System control register SYC FFFFF068H Memory address output mode register MAM W FFFFF070H Power save control register PSC R/W FFFFF074H Processor clock control register FFFFF078H FFFFF000H Port 0 P0 FFFFF002H Port 1 FFFFF004H R/W R R/W Undefined 00HNote 00H C0H PCC 03H System status register SYS 00H FFFFF080H Pull-up resistor option register 0 PU0 FFFFF082H Pull-up resistor option register 1 PU1 FFFFF084H Pull-up resistor option register 2 PU2 FFFFF086H Pull-up resistor option register 3 PU3 FFFFF094H Pull-up resistor option register 10 PU10 Note Resetting initializes registers to input mode and the pin level is read. Output latches are initialized to 00H. User's Manual U13850EJ6V0UD 119 CHAPTER 3 CPU FUNCTIONS (2/7) Address Function Register Name Symbol R/W Bit Units for Manipulation 1 Bit 8 Bits 16 Bits 32 Bits PF1 Port 2 function register PF2 FFFFF0A6H Port 3 function register PF3 FFFFF0B4H Port 10 function register PF10 FFFFF0C0H Rising edge specification register 0 EGP0 FFFFF0C2H Falling edge specification register 0 EGN0 FFFFF100H Interrupt control register WDTIC FFFFF102H Interrupt control register PIC0 FFFFF104H Interrupt control register PIC1 FFFFF106H Interrupt control register PIC2 FFFFF108H Interrupt control register PIC3 FFFFF10AH Interrupt control register PIC4 FFFFF10CH Interrupt control register PIC5 FFFFF10EH Interrupt control register PIC6 FFFFF118H Interrupt control register WTNIIC FFFFF11AH Interrupt control register TMIC00 FFFFF11CH Interrupt control register TMIC01 FFFFF11EH Interrupt control register TMIC10 FFFFF120H Interrupt control register TMIC11 FFFFF122H Interrupt control register TMIC2 FFFFF124H Interrupt control register TMIC3 FFFFF126H Interrupt control register TMIC4 FFFFF128H Interrupt control register TMIC5 FFFFF12AH Interrupt control register TMIC6 FFFFF12CH Interrupt control register TMIC7 FFFFF12EH Interrupt control register CSIC0 FFFFF130H Interrupt control register SERIC0 FFFFF132H Interrupt control register CSIC1 FFFFF134H Interrupt control register STIC0 FFFFF136H Interrupt control register CSIC2 IICIC1 FFFFF096H Pull-up resistor option register 11 PU11 FFFFF0A2H Port 1 function register FFFFF0A4H Note R/W FFFFF138H Interrupt control register FFFFF13AH Interrupt control register SERIC1 FFFFF13CH Interrupt control register CSIC3 FFFFF13EH Interrupt control register STIC1 2 Note Available only in the Y versions (products with on-chip I C). 120 User's Manual U13850EJ6V0UD After Reset 00H 47H CHAPTER 3 CPU FUNCTIONS (3/7) Address Function Register Name Symbol R/W Bit Units for Manipulation 1 Bit After Reset 8 Bits 16 Bits 32 Bits CSIC4 Interrupt control register Note IEBIC1 FFFFF144H Interrupt control register Note IEBIC2 FFFFF146H Interrupt control register ADIC FFFFF148H Interrupt control register DMAIC0 FFFFF14AH Interrupt control register DMAIC1 FFFFF14CH Interrupt control register DMAIC2 FFFFF14EH Interrupt control register DMAIC3 FFFFF150H Interrupt control register DMAIC4 FFFFF152H Interrupt control register DMAIC5 FFFFF154H Interrupt control register WTNIC FFFFF156H Interrupt control register KRIC FFFFF166H In-service priority register ISPR R 00H FFFFF170H Command register PRCMD W Undefined FFFFF180H DMA peripheral I/O address register 0 DIOA0 FFFFF182H DMA internal RAM address register 0 DRA0 FFFFF184H DMA byte count register 0 DBC0 FFFFF186H DMA channel control register 0 DCHC0 FFFFF190H DMA peripheral I/O address register 1 DIOA1 FFFFF192H DMA internal RAM address register 1 DRA1 FFFFF194H DMA byte count register 1 DBC1 FFFFF196H DMA channel control register 1 DCHC1 FFFFF1A0H DMA peripheral I/O address register 2 DIOA2 FFFFF1A2H DMA internal RAM address register 2 DRA2 FFFFF1A4H DMA byte count register 2 DBC2 FFFFF1A6H DMA channel control register 2 DCHC2 FFFFF1B0H DMA peripheral I/O address register 3 DIOA3 FFFFF1B2H DMA internal RAM address register 3 DRA3 FFFFF1B4H DMA byte count register 3 DBC3 FFFFF1B6H DMA channel control register 3 DCHC3 FFFFF1C0H DMA peripheral I/O address register 4 DIOA4 FFFFF1C2H DMA internal RAM address register 4 DRA4 FFFFF1C4H DMA byte count register 4 DBC4 FFFFF1C6H DMA channel control register 4 DCHC4 FFFFF1D0H DMA peripheral I/O address register 5 DIOA5 FFFFF1D2H DMA internal RAM address register 5 DRA5 FFFFF140H FFFFF142H Interrupt control register 47H R/W 00H Undefined 00H Undefined 00H Undefined 00H Undefined 00H Undefined Note Available only in the V850/SB2. User's Manual U13850EJ6V0UD 121 CHAPTER 3 CPU FUNCTIONS (4/7) Address Function Register Name Symbol R/W Bit Units for Manipulation 1 Bit 8 Bits 16 Bits 32 Bits Undefined 00H FFFFF1D4H DMA byte count register 5 DBC5 FFFFF1D6H DMA channel control register 5 DCHC5 FFFFF200H 16-bit timer register 0 TM0 R FFFFF202H 16-bit capture/compare register 00 CR00 Note FFFFF204H 16-bit capture/compare register 01 CR01 Note FFFFF206H Prescaler mode register 00 PRM00 R/W FFFFF208H 16-bit timer mode control register 0 TMC0 FFFFF20AH Capture/compare control register 0 CRC0 FFFFF20CH Timer output control register 0 TOC0 FFFFF20EH Prescaler mode register 01 PRM01 FFFFF210H 16-bit timer register 1 TM1 R FFFFF212H 16-bit capture/compare register 10 CR10 Note FFFFF214H 16-bit capture/compare register 11 CR11 Note FFFFF216H Prescaler mode register 10 PRM10 R/W FFFFF218H 16-bit timer mode control register 1 TMC1 FFFFF21AH Capture/compare control register 1 CRC1 FFFFF21CH Timer output control register 1 TOC1 FFFFF21EH Prescaler mode register 11 PRM11 FFFFF240H 8-bit counter 2 TM2 R FFFFF242H 8-bit compare register 2 CR20 R/W FFFFF244H Timer clock selection register 20 TCL20 FFFFF246H 8-bit timer mode control register 2 TMC2 FFFFF24AH 16-bit counter 23 (during cascade connection only) TM23 R FFFFF24CH 16-bit compare register 23 (during cascade connection only) CR23 R/W FFFFF24EH Timer clock selection register 21 TCL21 FFFFF250H 8-bit counter 3 TM3 R FFFFF252H 8-bit compare register 3 CR30 R/W FFFFF254H Timer clock selection register 30 TCL30 FFFFF256H 8-bit timer mode control register 3 TMC3 FFFFF25EH Timer clock selection register 31 TCL31 FFFFF260H 8-bit counter 4 TM4 R FFFFF262H 8-bit compare register 4 CR40 R/W FFFFF264H Timer clock selection register 40 TCL40 FFFFF266H 8-bit timer mode control register 4 TMC4 R/W 0000H 00H 0000H 00H 00H 04H 0000H 00H Note In compare mode: R/W In capture mode: R 122 After Reset User's Manual U13850EJ6V0UD 04H 00H 04H CHAPTER 3 CPU FUNCTIONS (5/7) Address Function Register Name Symbol R/W Bit Units for Manipulation 1 Bit After Reset 8 Bits 16 Bits 32 Bits FFFFF26AH 16-bit counter 45 (during cascade connection only) TM45 R FFFFF26CH 16-bit compare register 45 (during cascade connection only) CR45 R/W FFFFF26EH Timer clock selection register 41 TCL41 FFFFF270H 8-bit counter 5 TM5 R FFFFF272H 8-bit compare register 5 CR50 R/W FFFFF274H Timer clock selection register 50 TCL50 FFFFF276H 8-bit timer mode control register 5 TMC5 FFFFF27EH Timer clock selection register 51 TCL51 FFFFF280H 8-bit counter 6 TM6 R FFFFF282H 8-bit compare register 6 CR60 R/W FFFFF284H Timer clock selection register 60 TCL60 FFFFF286H 8-bit timer mode control register 6 TMC6 FFFFF28AH 16-bit counter 67 (during cascade connection only) TM67 R FFFFF28CH 16-bit compare register 67 (during cascade connection only) CR67 R/W FFFFF28EH Timer clock selection register 61 TCL61 FFFFF290H 8-bit counter 7 TM7 R FFFFF292H 8-bit compare register 7 CR70 R/W FFFFF294H Timer clock selection register 70 TCL70 FFFFF296H 8-bit timer mode control register 7 TMC7 FFFFF29EH Timer clock selection register 71 FFFFF2A0H 0000H 00H 04H 00H 04H 0000H 00H 04H TCL71 00H Serial I/O shift register 0 SIO0 FFFFF2A2H Serial operation mode register 0 CSIM0 FFFFF2A4H Serial clock selection register 0 CSIS0 FFFFF2B0H Serial I/O shift register 1 SIO1 FFFFF2B2H Serial operation mode register 1 CSIM1 FFFFF2B4H Serial clock selection register 1 CSIS1 FFFFF2C0H Serial I/O shift register 2 SIO2 FFFFF2C2H Serial operation mode register 2 CSIM2 FFFFF2C4H Serial clock selection register 2 CSIS2 FFFFF2D0H Serial I/O shift register 3 SIO3 FFFFF2D2H Serial operation mode register 3 CSIM3 FFFFF2D4H Serial clock selection register 3 CSIS3 FFFFF2E0H Variable-length serial I/O shift register 4 SIO4 User's Manual U13850EJ6V0UD 0000H 123 CHAPTER 3 CPU FUNCTIONS (6/7) Address Function Register Name Symbol R/W Bit Units for Manipulation 1 Bit R/W After Reset 8 Bits 16 Bits 32 Bits FFFFF2E2H Variable-length serial control register 4 CSIM4 FFFFF2E4H Variable-length serial setting register 4 CSIB4 FFFFF2E6H Baud rate generator source clock selection register 4 BRGCN4 FFFFF2E8H Baud rate generator output clock selection register 4 BRGCK4 7FH FFFFF300H Asynchronous serial interface mode register 0 ASIM0 00H FFFFF302H Asynchronous serial interface status register 0 ASIS0 R FFFFF304H Baud rate generator control register 0 BRGC0 R/W FFFFF306H Transmission shift register 0 TXS0 W FFFFF308H Reception buffer register 0 RXB0 R FFFFF30EH Baud rate generator mode control register 00 BRGMC00 R/W FFFFF310H Asynchronous serial interface mode register 1 ASIM1 FFFFF312H Asynchronous serial interface status register 1 ASIS1 R FFFFF314H Baud rate generator control register 1 BRGC1 R/W FFFFF316H Transmission shift register 1 TXS1 W FFFFF318H Reception buffer register 1 RXB1 R FFFFF31EH Baud rate generator mode control register 10 BRGMC10 R/W FFFFF320H Baud rate generator mode control register 01 BRGMC01 FFFFF322H Baud rate generator mode control register 11 BRGMC11 FFFFF33CH FFFFF33EH FFFFF340H FFFFF342H FFFFF344H FFFFF346H FFFFF348H FFFFF34AH FFFFF34CH FFFFF350H FFFFF352H FFFFF354H IICF0 IICF1 IICC0 IIC flag register 1 Note 2 IIC control register 0 IIC state register 0 Note 2 IIC clock selection register 0 Slave address register 0 IIC shift register 0 Note 2 Note 2 Note 2 IIC function expansion register 0 Note 2 Note 2 IIC clock expansion register 0 R IICCL0 R/W SVA0 IIC0 IICX0 IIC control register 1 IICC1 Note 2 IIC clock selection register 1 Note 2 Note 2 IICS1 R IICCL1 R/W IIC shift register 1Note 2 IIC1 FFFFF35AH IIC function expansion register 1Note 2 IICX1 SVA1 Note 2 IICCE0 Note 2 IIC state register 1 IICS0 Slave address register 1 FFFFF35CH IIC clock expansion register 1 IICCE1 FFFFF360H Watch timer mode register WTNM FFFFF364H Watch timer clock selection register WTNCS 124 Note 1 IIC flag register 0 FFFFF358H 2. Note 1 FFFFF356H Notes 1. 2 Available only in the BY and HY versions (products with on-chip I C). 2 Available only in the Y versions (products with on-chip I C). User's Manual U13850EJ6V0UD 00H FFH 00H FFH 00H CHAPTER 3 CPU FUNCTIONS (7/7) Address Function Register Name Symbol R/W Bit Units for Manipulation 1 Bit 8 Bits 16 Bits 32 Bits R/W After Reset FFFFF366H Watch timer high-speed clock selection registerNote 1 WTNHC 00H FFFFF36CH Correction control register CORCN FFFFF36EH Correction request register CORRQ FFFFF370H Correction address register 0 CORAD0 FFFFF374H Correction address register 1 CORAD1 FFFFF378H Correction address register 2 CORAD2 FFFFF37CH Correction address register 3 CORAD3 FFFFF380H Oscillation stable time selection register OSTS 04H FFFFF382H Watchdog timer clock selection register WDCS 00H FFFFF384H Watchdog timer mode register WDTM FFFFF38EH DMA start factor expansion register DMAS FFFFF3A0H Real-time output buffer register L RTBL FFFFF3A2H Real-time output buffer register H RTBH FFFFF3A4H Real-time output port mode register RTPM FFFFF3A6H Real-time output port control register RTPC FFFFF3C0H A/D converter mode register 1 ADM1 FFFFF3C2H Analog input channel specification register ADS FFFFF3C4H A/D conversion result register ADCR FFFFF3C6H A/D conversion result register H (higher 8 bits) ADCRH FFFFF3C8H A/D converter mode register 2 ADM2 FFFFF3D0H Key return mode register KRM FFFFF3D4H Noise elimination control register NCC R R/W 00000000H 0000H 00H Note 2 FFFFF3DEH IEBus high-speed clock selection register V850/SB2 IEHCLK FFFFF3E0H IEBus control register V850/SB2 BCR FFFFF3E2H IEBus unit address register V850/SB2 UAR FFFFF3E4H IEBus slave address register V850/SB2 SAR FFFFF3E6H IEBus partner address register V850/SB2 PAR R FFFFF3E8H IEBus control data register V850/SB2 CDR R/W FFFFF3EAH IEBus telegraph length register V850/SB2 DLR FFFFF3ECH IEBus data register V850/SB2 DR 0000H 01H 00H FFFFF3EEH IEBus unit status register V850/SB2 USR R FFFFF3F0H IEBus interrupt status register V850/SB2 ISR R/W FFFFF3F2H IEBus slave status register V850/SB2 SSR R 41H FFFFF3F4H IEBus communication success counter V850/SB2 SCR 01H FFFFF3F6H IEBus transfer counter V850/SB2 CCR 20H FFFFF3F8H IEBus clock selection register V850/SB2 IECLK 00H Notes 1. 2. R/W Available only in the B versions of the V850/SB1 and H versions of the V850/SB2. Available only in the H versions of the V850/SB2. User's Manual U13850EJ6V0UD 125 CHAPTER 3 CPU FUNCTIONS 3.4.9 Specific registers Specific registers are registers that are protected from being written with illegal data due to erroneous program execution, etc. The write access of these specific registers is executed in a specific sequence, and if abnormal store operations occur, it is notified by the system status register (SYS). The V850/SB1 and V850/SB2 have two specific registers, the power save control register (PSC) and processor clock control register (PCC). For details of the PSC register, refer to 6.3.1 (2) Power save control register (PSC), and for details of the PCC register, refer to 6.3.1 (1) Processor clock control register (PCC). The following sequence shows the data setting of the specific registers. <1> Disable DMA operation. <2> Set the PSW NP bit to 1 (interrupt disabled). <3> Write any 8-bit data in the command register (PRCMD). <4> Write the set data in the specific registers (by the following instructions). * Store instruction (ST/SST instruction) * Bit manipulation instruction (SET1/CLR1/NOT1 instruction) <5> Return the PSW NP bit to 0 (interrupt disable canceled). <6> Insert the NOP instructions (5 instructions). <7> If necessary, enable DMA operation. No special sequence is required when reading the specific registers. Cautions 1. If an interrupt request or a DMA request is accepted between the time PRCMD is generated (<3>) and the specific register write operation (<4>) that follows immediately after, the write operation to the specific register is not performed and a protection error (PRERR bit of SYS register is 1) may occur. Therefore, set the NP bit of PSW to 1 (<2>) to disable the acceptance of INT/NMI or to disable DMA transfer. The above also applies when a bit manipulation instruction is used to set a specific register. A description example is given below. [Description example]: In case of PCC register LDSR rX.5 ST.B r0, PRCMD[r0] ; Write to PRCMD ST.B rD, PCC[r0] ; PCC register setting LDSR rY, 5 . . . ; NP bit = 0 Remark ; NP bit = 1 The above example assumes that rD (PCC set value), rX (value to be written to PSW), and rY (value rewritten to PSW) are already set. When saving the value of the PSW, the value of the PSW prior to setting the NP bit must be transferred to the rY register. 2. Always stop DMA prior to accessing specific registers. 3. If data is set to the PSC register to set IDLE mode or STOP mode, a dummy instruction needs to be inserted for correct execution of the routine after IDLE or STOP mode is released. For details, refer to 6.6 Cautions on Power Save Function. 126 User's Manual U13850EJ6V0UD CHAPTER 3 CPU FUNCTIONS (1) Command register (PRCMD) The command register (PRCMD) is a register used when write-accessing the specific register to prevent incorrect writing to the specific registers due to the erroneous program execution. This register can be written in 8-bit units. It becomes undefined values in a read cycle. Occurrence of illegal store operations can be checked by the PRERR bit of the SYS register. After reset: Undefined W Address: FFFFF170H Symbol 7 6 5 4 3 2 1 0 PRCMD REG7 REG6 REG5 REG4 REG3 REG2 REG1 REG0 REGn Registration code 0/1 Any 8-bit data Remark n = 0 to 7 (2) System status register (SYS) This register is allocated with status flags showing the operating state of the entire system. This register can be read/written in 8-bit or 1-bit units. After reset: 00H R/W Address: FFFFF078H Symbol 7 6 5 <4> 3 2 1 0 SYS 0 0 0 PRERR 0 0 0 0 PRERR Detection of protection error 0 Protection error does not occur 1 Protection error occurs Operation conditions of PRERR flag are shown as follows. (a) Set conditions (PRERR = 1) (1) When a write operation to the specific register took place in a state where the store instruction operation for the recent peripheral I/O was not a write operation to the PRCMD register. (2) When the first store instruction operation following a write operation to the PRCMD register is to any peripheral I/O register apart from specific registers. (b) Reset conditions: (PRERR = 0) (1) When 0 is written to the PRERR flag of the SYS register. However, except for the case of Remark 1. (2) At system reset. Remarks 1. If 0 is written to the PRERR bit immediately after a write operation to the PRCMD register, the PRERR bit is set to 1 (because the SYS register is not a specific register). 2. If the PRCMD register is written again immediately after a write operation to the PRCMD register, the PRERR bit of the SYS register is set to 1 (because the SYS register is not a specific register). User's Manual U13850EJ6V0UD 127 CHAPTER 4 BUS CONTROL FUNCTION The V850/SB1 and V850/SB2 are provided with an external bus interface function by which external memories such as ROM and RAM, and I/O can be connected. 4.1 Features * Address bus (capable of separate output) * 16-bit data bus * Able to be connected to external devices via the pins that have alternate functions as ports * Wait function * Programmable wait function, capable of inserting up to 3 wait states per 2 blocks * External wait control through WAIT pin input * Idle state insertion function * Bus mastership arbitration function * Bus hold function 4.2 Bus Control Pins and Control Register 4.2.1 Bus control pins The following pins are used for interfacing with external devices. Table 4-1. Bus Control Pins External Bus Interface Function Corresponding Port (Pins) Address/data bus (AD0 to AD7) Port 4 (P40 to P47) Address/data bus (AD8 to AD15) Port 5 (P50 to P57) Address bus (A1 to A4) Port 11 (P110 to P113) Address bus (A5 to A12) Port 10 (P100 to P107) Address bus (A13 to A15) Port 3 (P34 to P36) Address bus (A16 to A21) Port 6 (P60 to P65) Read/write control (LBEN, UBEN, R/W, DSTB, WRL, WRH, RD) Port 9 (P90 to P93) Address strobe (ASTB) Port 9 (P94) Bus hold control (HLDRQ, HLDAK) Port 9 (P95, P96) External wait control (WAIT) Port 11 (P110) The bus interface function of each pin is enabled by specifying the memory expansion mode register (MM) or the memory address output mode register (MAM). For the details of specifying an operation mode of the external bus interface, refer to 3.4.6 (1) Memory expansion mode register (MM) and (2) Memory address output mode register (MAM). Caution For debugging using the separate bus, refer to the user's manual of the corresponding in-circuit emulator. 128 User's Manual U13850EJ6V0UD CHAPTER 4 BUS CONTROL FUNCTION 4.2.2 Control register (1) System control register (SYC) This register switches control signals for the bus interface. The system control register can be read/written in 8-bit or 1-bit units. After reset: 00H R/W Address: FFFFF064H Symbol 7 6 5 4 3 2 1 <0> SYC 0 0 0 0 0 0 0 BIC BIC Note Bus interface control Note 0 DSTB, R/W, LBEN, UBEN 1 Note RD, WRL, WRH, UBEN signal output signal output The UBEN signal is output regardless of the BIC bit setting in the external expansion mode (set by the memory expansion mode register (MM)). Caution In the V850/SB1 and V850/SB2, when using port 9 as an I/O port, set the BIC bit of the system control register (SYC) to 0. Note that the BIC bit is 0 after system reset. 4.3 Bus Access 4.3.1 Number of access clocks The number of basic clocks necessary for accessing each resource is as follows. Table 4-2. Number of Access Clocks Bus Cycle Type Peripheral I/O (Bus Width) Internal ROM (32 Bits) Internal RAM (32 Bits) Peripheral I/O (16 Bits) External Memory (16 bits) Instruction fetch 1 3 Disabled 3+n Operand data access 3 1 3 3+n Remarks 1. Unit: Clock/access 2. n: Number of waits inserted User's Manual U13850EJ6V0UD 129 CHAPTER 4 BUS CONTROL FUNCTION 4.3.2 Bus width The CPU carries out peripheral I/O access and external memory access in 8-bit, 16-bit, or 32-bit units. The following shows the operation for each access. (1) Byte access (8 bits) Byte access is divided into two types, access to even addresses and access to odd addresses. Figure 4-1. Byte Access (8 Bits) (a) Access to even address (b) Access to odd address 15 7 0 Byte data 15 8 7 7 0 0 External data bus 8 7 0 Byte data External data bus (2) Halfword access (16 bits) In halfword access to external memory, data is dealt with as is because the data bus is fixed to 16 bits. Figure 4-2. Halfword Access (16 Bits) 15 15 0 0 Halfword data External data bus (3) Word access (32 bits) In word access to external memory, the lower halfword is accessed first and then the higher halfword is accessed. Figure 4-3. Word Access (32 Bits) Second First 31 31 16 15 0 Word data 130 15 16 15 0 0 External data bus User's Manual U13850EJ6V0UD Word data 15 0 External data bus CHAPTER 4 BUS CONTROL FUNCTION 4.4 Memory Block Function The 16 MB memory space is divided into memory blocks of 1 MB units. The programmable wait function and bus cycle operation mode can be independently controlled for every two memory blocks. Figure 4-4. Memory Block FFFFFFH F00000H EFFFFFH E00000H DFFFFFH D00000H CFFFFFH C00000H BFFFFFH Block 15 On-chip peripheral I/O area Block 14 Internal RAM area Block 13 Block 12 Block 11 B00000H AFFFFFH Block 10 A00000H 9FFFFFH 900000H 8FFFFFH 800000H 7FFFFFH 700000H 6FFFFFH Block 9 Block 8 External memory area Block 7 Block 6 600000H 5FFFFFH 500000H 4FFFFFH Block 5 Block 4 400000H 3FFFFFH Block 3 300000H 2FFFFFH Block 2 200000H 1FFFFFH Block 1 100000H 0FFFFFH Block 0 Internal ROM area 000000H User's Manual U13850EJ6V0UD 131 CHAPTER 4 BUS CONTROL FUNCTION 4.5 Wait Function 4.5.1 Programmable wait function To facilitate interfacing with low-speed memories and I/O devices, up to 3 data waits can be inserted in a bus cycle that starts every two memory blocks. The number of waits can be programmed by using the data wait control register (DWC). Immediately after the system has been reset, a state in which three data waits are inserted is automatically programmed for all memory blocks. (1) Data wait control register (DWC) This register can be read/written in 16-bit units. After reset: FFFFH Symbol DWC 15 R/W 14 Address: FFFFF060H 13 12 11 10 9 8 7 6 5 4 3 2 1 0 DW71 DW70 DW61 DW60 DW51 DW50 DW41 DW40 DW31 DW30 DW21 DW20 DW11 DW10 DW01 DW00 DWn1 DWn0 Number of wait states to be inserted 0 0 0 0 1 1 1 0 2 1 1 3 n Blocks into which wait states are inserted 0 Blocks 0/1 1 Blocks 2/3 2 Blocks 4/5 3 Blocks 6/7 4 Blocks 8/9 5 Blocks 10/11 6 Blocks 12/13 7 Blocks 14/15 Block 0 is reserved for the internal ROM area. It is not subject to programmable wait control, regardless of the setting of DWC, and is always accessed without wait states. The internal RAM area of block 15 is not subject to programmable wait control and is always accessed without wait states. The on-chip peripheral I/O area of this block is not subject to programmable wait control either; only wait control from each peripheral function is performed. 132 User's Manual U13850EJ6V0UD CHAPTER 4 BUS CONTROL FUNCTION 4.5.2 External wait function When an extremely slow device, I/O, or asynchronous system is connected, any number of wait states can be inserted in the bus cycle by sampling the external wait pin (WAIT) to synchronize with the external device. The external wait signal is data wait only, and does not affect the access times of the internal ROM, internal RAM, and on-chip peripheral I/O areas, similar to programmable wait. Input of the external WAIT signal can be done asynchronously to CLKOUT and is sampled at the falling edge of the clock in the T2 and TW states of a bus cycle. If the setup/hold time at sampling timing is not satisfied, the wait state may or may not be inserted in the next state. Caution Because the A1 pin and WAIT pin are alternate-function pins, the wait function by the WAIT pin cannot be used when using a separate bus (programmable wait can be used, however). Similarly, a separate bus cannot be used when the wait function by the WAIT pin is being used. 4.5.3 Relationship between programmable wait and external wait A wait cycle is inserted as a result of an OR operation between the wait cycle specified by the set value of programmable wait and the wait cycle controlled by the WAIT pin. In other words, the number of wait cycles is determined by whichever has the greater number. Figure 4-5. Wait Control Programmable wait Wait control Wait by WAIT pin For example, if the number of programmable waits and the timing of the WAIT pin input signal are as illustrated below, three wait states will be inserted in the bus cycle. Figure 4-6. Example of Inserting Wait States T1 T2 TW TW TW T3 CLKOUT WAIT pin Wait by WAIT pin Programmable wait Wait control Remark {: Valid sampling timing User's Manual U13850EJ6V0UD 133 CHAPTER 4 BUS CONTROL FUNCTION 4.6 Idle State Insertion Function To facilitate interfacing with low-speed memory devices and meeting the data output float delay time on memory read accesses every two blocks, one idle state (TI) can be inserted into the current bus cycle after the T3 state. The following bus cycle starts after one idle state. Specifying insertion of the idle state is programmable by using the bus cycle control register (BCC). Immediately after the system has been reset, idle state insertion is automatically programmed for all memory blocks. (1) Bus cycle control register (BCC) This register can be read/written in 16-bit units. After reset: AAAAH R/W Address: FFFFF062H Symbol 15 14 13 12 11 10 9 8 7 6 5 4 3 2 BCC BC71 0 BC61 0 BC51 0 BC41 0 BC31 0 BC21 0 BC11 0 BCn1 1 BC01 0 0 Idle state insertion specification 0 Not inserted 1 Inserted n Blocks into which idle state is inserted 0 Blocks 0/1 1 Blocks 2/3 2 Blocks 4/5 3 Blocks 6/7 4 Blocks 8/9 5 Blocks 10/11 6 Blocks 12/13 7 Blocks 14/15 Block 0 is reserved for the internal ROM area; therefore, no idle state can be specified. The internal RAM area and on-chip peripheral I/O area of block 15 are not subject to insertion of an idle state. Be sure to set bits 0, 2, 4, 6, 8, 10, 12, and 14 to 0. If these bits are set to 1, the operation is not guaranteed. 134 User's Manual U13850EJ6V0UD CHAPTER 4 BUS CONTROL FUNCTION 4.7 Bus Hold Function 4.7.1 Outline of function When the MM3 bit of the memory expansion mode register (MM) is set (1), the HLDRQ and HLDAK pin functions of P95 and P96 become valid. When the HLDRQ pin becomes active (low) indicating that another bus master is requesting acquisition of the bus, the external address/data bus and strobe pins go into a high-impedance state Note , and the bus is released (bus hold status). When the HLDRQ pin becomes inactive (high) indicating that the request for the bus is cleared, these pins are driven again. During the bus hold period, the internal operation continues until the next external memory access. The bus hold status can be recognized by the HLDAK pin becoming active (low). This feature can be used to design a system where two or more bus masters exist, such as when a multiprocessor configuration is used and when a DMA controller is connected. A bus hold request is not acknowledged between the first and the second word access, and between the read access and write access of the read-modify-write access executed using a bit manipulation instruction. Note A1 to A15 are set to the hold state when a separate bus is used. User's Manual U13850EJ6V0UD 135 CHAPTER 4 BUS CONTROL FUNCTION 4.7.2 Bus hold procedure The procedure of the bus hold function is illustrated below. Figure 4-7. Bus Hold Procedure <1>HLDRQ = 0 acknowledged <2>All bus cycle start requests held pending <3>End of current bus cycle <4>Bus idle status <5>HLDAK = 0 Normal status Bus hold status <6>HLDRQ = 1 acknowledged <7>HLDAK = 1 <8>Clears pending bus cycle start requests <9>Start of bus cycle Normal status HLDRQ HLDAK <1> <2> <3><4><5> <6> <7><8><9> 4.7.3 Operation in power save mode In the IDLE or software STOP mode, the system clock is stopped. Consequently, the bus hold status is not set even if the HLDRQ pin becomes active. In the HALT mode, the HLDAK pin immediately becomes active when the HLDRQ pin becomes active, and the bus hold status is set. When the HLDRQ pin becomes inactive, the HLDAK pin becomes inactive. As a result, the bus hold status is cleared, and the HALT mode is set again. 136 User's Manual U13850EJ6V0UD CHAPTER 4 BUS CONTROL FUNCTION 4.8 Bus Timing The V850/SB1 and V850/SB2 can execute read/write control for an external device using the following two modes. * Mode using DSTB, R/W, LBEN, UBEN, and ASTB signals * Mode using RD, WRL, WRH, and ASTB signals Set these modes by using the BIC bit of the system control register (SYC) (see 4.2.2 (1) System control register (SYC)). Figure 4-8. Memory Read (1/4) (a) 0 waits T1 T2 T3 CLKOUT (output) A16 to A21 (output) Address A1 to A15 (output) Address AD0 to AD15 (I/O) Address Data ASTB (output) R/W (output) WRH, WRL (output) H DSTB, RD (output) UBEN, LBEN (output) WAIT (input) Remarks 1. { indicates the sampling timing when the number of programmable waits is set to 0. 2. The broken line indicates the high-impedance state. User's Manual U13850EJ6V0UD 137 CHAPTER 4 BUS CONTROL FUNCTION Figure 4-8. Memory Read (2/4) (b) 1 wait T1 T2 TW T3 CLKOUT (output) A16 to A21 (output) Address A1 to A15 (output) Address Address AD0 to AD15 (I/O) Data ASTB (output) R/W (output) WRH, WRL (output) H DSTB, RD (output) UBEN, LBEN (output) WAIT (input) Remarks 1. { indicates the sampling timing when the number of programmable waits is set to 1. 2. The broken line indicates the high-impedance state. 138 User's Manual U13850EJ6V0UD CHAPTER 4 BUS CONTROL FUNCTION Figure 4-8. Memory Read (3/4) (c) 0 waits, idle state T1 T2 T3 TI CLKOUT (output) A16 to A21 (output) Address A1 to A15 (output) Address Address AD0 to AD15 (I/O) Data ASTB (output) R/W (output) WRH, WRL (output) H DSTB, RD (output) UBEN, LBEN (output) WAIT (input) Remarks 1. { indicates the sampling timing when the number of programmable waits is set to 0. 2. The broken line indicates the high-impedance state. User's Manual U13850EJ6V0UD 139 CHAPTER 4 BUS CONTROL FUNCTION Figure 4-8. Memory Read (4/4) (d) 1 wait, idle state T1 T2 TW T3 TI CLKOUT (output) A16 to A21 (output) Address A1 to A15 (output) Address Address AD0 to AD15 (I/O) Data ASTB (output) R/W (output) WRH, WRL (output) H DSTB, RD (output) UBEN, LBEN (output) WAIT (input) Remarks 1. { indicates the sampling timing when the number of programmable waits is set to 1. 2. The broken line indicates the high-impedance state. 140 User's Manual U13850EJ6V0UD CHAPTER 4 BUS CONTROL FUNCTION Figure 4-9. Memory Write (1/2) (a) 0 waits T1 T2 T3 CLKOUT (output) A16 to A21 (output) Address A1 to A15 (output) Address Address AD0 to AD15 (I/O) DataNote ASTB (output) R/W (output) RD (output) H DSTB (output) WRH, WRL (output) UBEN, LBEN (output) WAIT (input) Note AD0 to AD7 output invalid data when odd-address byte data is accessed. AD8 to AD15 output invalid data when even-address byte data is accessed. Remarks 1. { indicates the sampling timing when the number of programmable waits is set to 0. 2. The broken line indicates the high-impedance state. User's Manual U13850EJ6V0UD 141 CHAPTER 4 BUS CONTROL FUNCTION Figure 4-9. Memory Write (2/2) (b) 1 wait T1 T2 TW T3 CLKOUT (output) A16 to A21 (output) Address A1 to A15 (output) Address Address AD0 to AD15 (I/O) DataNote ASTB (output) R/W (output) RD (output) H DSTB (output) WRH, WRL (output) UBEN, LBEN (output) WAIT (input) Note AD0 to AD7 output invalid data when odd-address byte data is accessed. AD8 to AD15 output invalid data when even-address byte data is accessed. Remarks 1. { indicates the sampling timing when the number of programmable waits is set to 1. 2. The broken line indicates the high-impedance state. 142 User's Manual U13850EJ6V0UD CHAPTER 4 BUS CONTROL FUNCTION Figure 4-10. Bus Hold Timing T2 T3 TH TH TH TH TI T1 CLKOUT (output) HLDRQ (input) Note 1 HLDAK (output) A16 to A21 (output) Address Address A1 to A15 (output) AD0 to AD15 (I/O) Address Address Address Undefined Data Address ASTB (output) Note 2 R/W (output) DSTB, RD, WRH, WRL (output) UBEN, LBEN (output) WAIT (input) Notes 1. If the HLDRQ signal is inactive (high level) at this sampling timing, the bus hold state is not entered. 2. If the bus hold status is entered after a write cycle, a high level may be output momentarily from the R/W pin immediately before the HLDAK signal changes from high level to low level. Remarks 1. { indicates the sampling timing when the number of programmable waits is set to 0. 2. The broken line indicates the high-impedance state. User's Manual U13850EJ6V0UD 143 CHAPTER 4 BUS CONTROL FUNCTION 4.9 Bus Priority There are four external bus cycles: bus hold, memory access, instruction fetch (branch), and instruction fetch (continuous). The bus hold cycle is given the highest priority, followed by memory access, instruction fetch (branch), and instruction fetch (continuous) in that order. The instruction fetch cycle may be inserted between the read access and write access in a read-modify-write access. No instruction fetch cycle is inserted between the lower halfword access and higher halfword access of word access operations. Table 4-3. Bus Priority External Bus Cycle 144 Priority Bus hold 1 Memory access 2 Instruction fetch (branch) 3 Instruction fetch (continuous) 4 User's Manual U13850EJ6V0UD CHAPTER 4 BUS CONTROL FUNCTION 4.10 Memory Boundary Operation Conditions 4.10.1 Program space (1) Do not execute a branch to the on-chip peripheral I/O area or continuous fetch from the internal RAM area to the peripheral I/O area. If a branch or instruction fetch is executed, the NOP instruction code is continuously fetched and no data is fetched from external memory. (2) A prefetch operation straddling over the on-chip peripheral I/O area (invalid fetch) does not take place if a branch instruction exists at the upper-limit address of the internal RAM area. 4.10.2 Data space Only the address aligned at the halfword boundary (when the least significant bit of the address is "0")/word boundary (when the lowest 2 bits of the address are "0") boundary is accessed by halfword (16 bits)/word (32 bits) data. Therefore, access that straddles over the memory or memory block boundary does not take place. For details, refer to V850 Series Architecture User's Manual. User's Manual U13850EJ6V0UD 145 CHAPTER 5 INTERRUPT/EXCEPTION PROCESSING FUNCTION 5.1 Outline The V850/SB1 and V850/SB2 are provided with a dedicated interrupt controller (INTC) for interrupt servicing and realize a high-powered interrupt function that can service interrupt requests from a total of 37 to 40 sources. An interrupt is an event that occurs independently of program execution, and an exception is an event that is dependent on program execution. Generally, an exception takes precedence over an interrupt. The V850/SB1 and V850/SB2 can process interrupt requests from the on-chip peripheral hardware and external sources. Moreover, exception processing can be started by the TRAP instruction (software exception) or by generation of an exception event (fetching of an illegal opcode) (exception trap). 5.1.1 Features * Interrupts * Non-maskable interrupts: 2 sources * Maskable interrupts: (the number of maskable interrupt sources differs depending on the product) (V850/SB1) PD703030B, 703031A, 703031B, 703032A, 703032B, 703033A, 703033B, 70F3030B, 70F3032A, 70F3032B, 70F3033A, 70F3033B: 37 sources PD703030BY, 703031AY, 703031BY, 703032AY, 703032BY, 703033AY, 703033BY, 70F3030BY, 70F3032AY, 70F3032BY, 70F3033AY, 70F3033BY: 38 sources (V850/SB2) PD703034A, 703034B, 703035A, 703035B, 703036H, 703037A, 703037H, 70F3035A, 70F3035B, 70F3036H, 70F3037A, 70F3037H: 39 sources PD703034AY, 703034BY, 703035AY, 703035BY, 703036HY, 703037AY, 703037HY, 70F3035AY, 70F3035BY, 70F3036HY, 70F3037AY, 70F3037HY: * * 8 levels of programmable priorities * Mask specification for interrupt requests according to priority * Masks can be specified for each maskable interrupt request. * Noise elimination, edge detection, and valid edge of external interrupt request signal can be specified. Exceptions * Software exceptions: 32 sources * Exception trap: 1 source (illegal opcode exception) The interrupt/exception sources are listed in Table 5-1. 146 40 sources User's Manual U13850EJ6V0UD CHAPTER 5 INTERRUPT/EXCEPTION PROCESSING FUNCTION Table 5-1. Interrupt Source List (1/2) Type Classification Default Priority Interrupt - RESET Reset input - 0000H 00000000H Undefined - NonInterrupt maskable Interrupt - NMI NMI pin input - 0010H 00000010H nextPC - - INTWDT WDT 0020H Reset - Software Exception exception Exception Name Trigger WDTOVF non-maskable Note 1 TRAP0n Interrupt Exception Source Code TRAP instruction - Handler Address Restored Interrupt PC Control Register 00000020H nextPC - Note 1 00000040H nextPC - Note 1 004nH - TRAP1n TRAP instruction - 005nH 00000050H nextPC - Exception Exception trap - ILGOP Illegal opcode - 0060H 00000060H nextPC - Maskable Interrupt 0 INTWDTM WDTOVF maskable WDT 0080H 00000080H nextPC WDTIC 1 INTP0 INTP0 pin Pin 0090H 00000090H nextPC PIC0 2 INTP1 INTP1 pin Pin 00A0H 000000A0H nextPC PIC1 3 INTP2 INTP2 pin Pin 00B0H 000000B0H nextPC PIC2 4 INTP3 INTP3 pin Pin 00C0H 000000C0H nextPC PIC3 5 INTP4 INTP4 pin Pin 00D0H 000000D0H nextPC PIC4 6 INTP5 INTP5 pin Pin 00E0H 000000E0H nextPC PIC5 7 INTP6 INTP6 pin Pin 00F0H 000000F0H nextPC PIC6 8 INTWTNI Watch timer prescaler WT 0140H 00000140H nextPC WTNIIC 9 INTTM00 INTTM00 TM0 0150H 00000150H nextPC TMIC00 10 INTTM01 INTTM01 TM0 0160H 00000160H nextPC TMIC01 11 INTTM10 INTTM10 TM1 0170H 00000170H nextPC TMIC10 12 INTTM11 INTTM11 TM1 0180H 00000180H nextPC TMIC11 13 INTTM2 TM2 compare match/OVF TM2 0190H 00000190H nextPC TMIC2 14 INTTM3 TM3 compare match/OVF TM3 01A0H 000001A0H nextPC TMIC3 15 INTTM4 TM4 compare match/OVF TM4 01B0H 000001B0H nextPC TMIC4 16 INTTM5 TM5 compare match/OVF TM5 01C0H 000001C0H nextPC TMIC5 17 INTTM6 TM6 compare match/OVF TM6 01D0H 000001D0H nextPC TMIC6 18 INTTM7 TM7 compare match/OVF TM7 01E0H 000001E0H nextPC TMIC7 19 INTIIC0Note 2/ INTCSI0 I2C interrupt/ CSI0 transmit end I2C/ CSI0 01F0H 000001F0H nextPC CSIC0 20 INTSER0 UART0 serial error UART0 0200H 00000200H nextPC SERIC0 21 INTSR0/ INTCSI1 UART0 receive end/ CSI1 transmit end UART0/ CSI1 0210H 00000210H nextPC CSIC1 22 INTST0 UART0 transmit end UART0 0220H 00000220H nextPC STIC0 Notes 1. 2. Note 1 n: 0 to FH 2 Available only in the Y versions (products with on-chip I C). User's Manual U13850EJ6V0UD 147 CHAPTER 5 INTERRUPT/EXCEPTION PROCESSING FUNCTION Table 5-1. Interrupt Source List (2/2) Type Classification Maskable Interrupt Notes 1. 2. Default Priority Name Trigger Interrupt Exception Source Code Handler Address Restored Interrupt PC Control Register 23 INTCSI2 CSI2 transmit end CSI2 0230H 00000230H nextPC CSIC2 24 INTIIC1Note 1 I2C1 interrupt I2C1 0240H 00000240H nextPC IICIC1 25 INTSER1 UART1 serial error UART1 0250H 00000250H nextPC SERIC1 26 INTSR1/ INTCSI3 UART1 receive end/ CSI3 transmit end UART1/ CSI3 0260H 00000260H nextPC CSIC3 27 INTST1 UART1 transmit end UART1 0270H 00000270H nextPC STIC1 28 INTCSI4 CSI4 transmit end CSI4 0280H 00000280H nextPC CSIC4 29 INTIE1Note 2 IEBus transfer end IEBus 0290H 00000290H nextPC IEBIC1 30 Note 2 INTIE2 IEBus communication end IEBus 02A0H 000002A0H nextPC IEBIC2 31 INTAD A/D conversion end A/D 02B0H 000002B0H nextPC ADIC 32 INTDMA0 DMA0 transfer end DMA0 02C0H 000002C0H nextPC DMAIC0 33 INTDMA1 DMA1 transfer end DMA1 02D0H 000002D0H nextPC DMAIC1 34 INTDMA2 DMA2 transfer end DMA2 02E0H 000002E0H nextPC DMAIC2 35 INTDMA3 DMA3 transfer end DMA3 02F0H 000002F0H nextPC DMAIC3 36 INTDMA4 DMA4 transfer end DMA4 0300H 00000300H nextPC DMAIC4 37 INTDMA5 DMA5 transfer end DMA5 0310H 00000310H nextPC DMAIC5 38 INTWTN Watch timer OVF WT 0320H 00000320H nextPC WTNIC 39 INTKR Key return interrupt KR 0330H 00000330H nextPC KRIC 2 Available only in the Y versions (products with on-chip I C). Available only in the V850/SB2. Remarks 1. Default Priority: Priority when two or more maskable interrupt requests occur at the same time. The highest priority is 0. Restored PC: The value of the PC saved to EIPC or FEPC when interrupt/exception processing is started. However, the value of the PC saved when an interrupt is acknowledged during DIVH (division) instruction execution is the value of the PC of the current instruction (DIVH). 2. The execution address of the illegal instruction when an illegal opcode exception occurs is calculated by (Restored PC - 4). 3. The restored PC of an interrupt/exception other than RESET is the value of the PC (when an event occurred) + 1. 4. Non-maskable interrupts (INTWDT) and maskable interrupts (INTWDTM) are set by the WDTM4 bit of the watchdog timer mode register (WDTM). 148 User's Manual U13850EJ6V0UD CHAPTER 5 INTERRUPT/EXCEPTION PROCESSING FUNCTION 5.2 Non-Maskable Interrupt A non-maskable interrupt is acknowledged unconditionally, even when interrupts are disabled (DI state). An NMI is not subject to priority control and takes precedence over all other interrupts. The following two non-maskable interrupt requests are available in the V850/SB2. * NMI pin input (NMI) * Non-maskable watchdog timer interrupt request (INTWDT) When the valid edge specified by rising edge specification register 0 (EGP0) and falling edge specification register 0 (EGN0) is detected at the NMI pin, an interrupt occurs. INTWDT functions as the non-maskable interrupt (INTWDT) only in the state in which the WDTM4 bit of the watchdog timer mode register (WDTM) is set to 1. While the service routine of a non-maskable interrupt is being executed (PSW.NP = 1), the acknowledgment of another non-maskable interrupt request is held pending. The pending NMI is acknowledged after the original service routine of the non-maskable interrupt under execution has been terminated (by the RETI instruction), or when PSW.NP is cleared to 0 by the LDSR instruction. Note that if two or more NMI requests are input during the execution of the service routine for an NMI, the number of NMIs that will be acknowledged after PSW.NP goes to ``0'', is only one. Caution If PSW.NP is cleared to 0 by the LDSR instruction during non-maskable interrupt servicing, the interrupt afterwards cannot be acknowledged correctly. User's Manual U13850EJ6V0UD 149 CHAPTER 5 INTERRUPT/EXCEPTION PROCESSING FUNCTION 5.2.1 Operation If a non-maskable interrupt is generated, the CPU performs the following processing, and transfers control to the handler routine. (1) Saves the restored PC to FEPC. (2) Saves the current PSW to FEPSW. (3) Writes exception codes 0010H and 0020H to the higher halfword (FECC) of ECR. (4) Sets the NP and ID bits of the PSW and clears the EP bit. (5) Loads the handler address (00000010H, 00000020H) of the non-maskable interrupt routine to the PC, and transfers control. Figure 5-1. Non-Maskable Interrupt Servicing NMI input INTC accepted Non-maskable interrupt request CPU processing PSW. NP 1 0 FEPC FEPSW ECR. FECC PSW. NP PSW. EP PSW. ID PC Restored PC PSW Exception code 1 0 1 00000010H, 00000020H Interrupt servicing 150 User's Manual U13850EJ6V0UD Interrupt request pending CHAPTER 5 INTERRUPT/EXCEPTION PROCESSING FUNCTION Figure 5-2. Acknowledging Non-Maskable Interrupt Request (a) If a new NMI request is generated while an NMI service routine is being executed: Main routine (PSW. NP = 1) NMI request NMI request NMI request held pending because PSW. NP = 1 Pending NMI request processed (b) If a new NMI request is generated twice while an NMI service routine is being executed: Main routine NMI request Held pending because NMI service program is being processed NMI request Held pending because NMI service program is being processed NMI request Only one NMI request is acknowledged even though two or more NMI requests are generated User's Manual U13850EJ6V0UD 151 CHAPTER 5 INTERRUPT/EXCEPTION PROCESSING FUNCTION 5.2.2 Restore Execution is restored from non-maskable interrupt servicing by the RETI instruction. Operation of RETI instruction When the RETI instruction is executed, the CPU performs the following processing, and transfers control to the address of the restored PC. (1) Restores the values of the PC and PSW from FEPC and FEPSW, respectively, because the EP bit of the PSW is 0 and the NP bit of the PSW is 1. (2) Transfers control back to the address of the restored PC and PSW. How the RETI instruction is processed is shown below. Figure 5-3. RETI Instruction Processing RETI instruction 1 PSW.EP 0 PSW.NP 1 0 PC PSW EIPC EIPSW PC PSW FEPC FEPSW Original processing restored Caution When the PSW.EP bit and PSW.NP bit are changed by the LDSR instruction during nonmaskable interrupt servicing, in order to restore the PC and PSW correctly during recovery by the RETI instruction, it is necessary to set PSW.EP back to 0 and PSW.NP back to 1 using the LDSR instruction immediately before the RETI instruction. Remark 152 The solid line shows the CPU processing flow. User's Manual U13850EJ6V0UD CHAPTER 5 INTERRUPT/EXCEPTION PROCESSING FUNCTION 5.2.3 NP flag The NP flag is a status flag that indicates that non-maskable interrupt (NMI) servicing is under execution. This flag is set when an NMI interrupt request has been acknowledged, and masks all interrupt requests to prohibit multiple interrupts from being acknowledged. After reset: 00000020H Symbol 31 8 PSW 0 7 6 5 4 3 2 NP EP ID SAT CY OV NP 1 0 S Z NMI servicing state 0 No NMI interrupt servicing 1 NMI interrupt currently being serviced 5.2.4 Noise eliminator of NMI pin NMI pin noise is eliminated by the noise eliminator using analog delay. Therefore, a signal input to the NMI pin is not detected as an edge, unless it maintains its input level for a certain period. The edge is detected after a certain period has elapsed. The NMI pin is used for releasing the software stop mode. In the software stop mode, the system clock is not used for noise elimination because the internal system clock is stopped. User's Manual U13850EJ6V0UD 153 CHAPTER 5 INTERRUPT/EXCEPTION PROCESSING FUNCTION 5.2.5 Edge detection function of NMI pin The NMI pin valid edge can be selected from the following four types: falling edge, rising edge, both edges, or neither edge. Rising edge specification register 0 (EGP0) and falling edge specification register 0 (EGN0) specify the valid edge of the non-maskable interrupt (NMI). These two registers can be read/written in 1-bit or 8-bit units. After reset, the valid edge of the NMI pin is set to the "detect neither rising nor falling edge" state. Therefore, the NMI pin functions as a normal port and an interrupt request cannot be acknowledged, unless a valid edge is specified by using the EGP0 and EGN0 registers. When using P00 as an output port, set the NMI valid edge to "detect neither rising nor falling edge". (1) Rising edge specification register 0 (EGP0) After reset: 00H R/W Address: FFFFF0C0H Symbol <7> <6> <5> <4> <3> <2> <1> <0> EGP0 EGP07 EGP06 EGP05 EGP04 EGP03 EGP02 EGP01 EGP00 EGP0n Rising edge valid control 0 No interrupt request signal occurred at the rising edge 1 Interrupt request signal occurred at the rising edge n = 0: NMI pin control n = 1 to 7: INTP0 to INTP6 pin control (2) Falling edge specification register 0 (EGN0) After reset: 00H R/W Address: FFFFF0C2H Symbol <7> <6> <5> <4> <3> <2> <1> <0> EGN0 EGN07 EGN06 EGN05 EGN04 EGN03 EGN02 EGN01 EGN00 EGN0n Falling edge valid control 0 No interrupt request signal occurred at the falling edge 1 Interrupt request signal occurred at the falling edge n = 0: NMI pin control n = 1 to 7: INTP0 to INTP6 pin control 154 User's Manual U13850EJ6V0UD CHAPTER 5 INTERRUPT/EXCEPTION PROCESSING FUNCTION 5.3 Maskable Interrupts Maskable interrupt requests can be masked by interrupt control registers. The V850/SB1 and V850/SB2 have 37 to 40 maskable interrupt sources (see 5.1.1 Features). If two or more maskable interrupt requests are generated at the same time, they are acknowledged according to the default priority. In addition to the default priority, eight levels of priorities can be specified by using the interrupt control registers, allowing programmable priority control. When an interrupt request has been acknowledged, the acknowledgment of other maskable interrupts is disabled and the interrupt disabled (DI) status is set. When the EI instruction is executed in an interrupt servicing routine, the interrupt enabled (EI) status is set which enables interrupts having a higher priority to immediately interrupt the current service routine in progress. Note that only interrupts with a higher priority will have this capability; interrupts with the same priority level cannot be nested. To use multiple interrupts, it is necessary to save EIPC and EIPSW to memory or a register before executing the EI instruction, and restore EIPC and EIPSW to the original values by executing the DI instruction before the RETI instruction. When the WDTM4 bit of the watchdog timer mode register (WDTM) is set to 0, the watchdog timer overflow interrupt functions as a maskable interrupt (INTWDTM). 5.3.1 Operation If a maskable interrupt occurs, the CPU performs the following processing, and transfers control to a handler routine. (1) Saves the restored PC to EIPC. (2) Saves the current PSW to EIPSW. (3) Writes an exception code to the lower halfword of ECR (EICC). (4) Sets the ID bit of the PSW and clears the EP bit. (5) Loads the corresponding handler address to the PC, and transfers control. The INT input masked by INTC and the INT input that occurs during the other interrupt servicing (when PSW.NP = 1 or PSW.ID = 1) are internally held pending. When the interrupts are unmasked, or when PSW.NP = 0 and PSW.ID = 0 by using the RETI and LDSR instructions, the pending INT is input to start the new maskable interrupt servicing. How the maskable interrupts are serviced is shown below. User's Manual U13850EJ6V0UD 155 CHAPTER 5 INTERRUPT/EXCEPTION PROCESSING FUNCTION Figure 5-4. Maskable Interrupt Servicing INT input INTC accepted Mask? Yes No PSW. ID = 0 No Interrupt enable mode? Yes Priority higher than that of interrupt currently serviced? No Yes Priority higher than that of other interrupt request? No Yes Highest default priority of interrupt requests with the same priority? No Yes Maskable interrupt request Interrupt request pending CPU processing 1 PSW. NP 0 1 PSW. ID 0 EIPC EIPSW ECR. EICC PSW. EP PSW. ID PC Restored PC PSW Exception code 0 1 Handler address Interrupt servicing 156 User's Manual U13850EJ6V0UD Interrupt request pending CHAPTER 5 INTERRUPT/EXCEPTION PROCESSING FUNCTION 5.3.2 Restore To restore execution from maskable interrupt servicing, the RETI instruction is used. Operation of RETI instruction When the RETI instruction is executed, the CPU performs the following steps, and transfers control to the address of the restored PC. (1) Restores the values of the PC and PSW from EIPC and EIPSW because the EP bit of the PSW is 0 and the NP bit of PSW is 0. (2) Transfers control to the address of the restored PC and PSW. The processing of the RETI instruction is shown below. Figure 5-5. RETI Instruction Processing RETI instruction 1 PSW. EP 0 PSW. NP 1 0 PC PSW EIPC EIPSW PC PSW FEPC FEPSW Restores original processing Caution When the PSW.EP bit and the PSW.NP bit are changed by the LDSR instruction during maskable interrupt servicing, in order to restore the PC and PSW correctly during recovery by the RETI instruction, it is necessary to set PSW.EP back to 0 and PSW.NP back to 0 using the LDSR instruction immediately before the RETI instruction. Remark The solid line shows the CPU processing flow. User's Manual U13850EJ6V0UD 157 CHAPTER 5 INTERRUPT/EXCEPTION PROCESSING FUNCTION 5.3.3 Priorities of maskable interrupts The V850/SB1 and V850/SB2 provide multiple interrupt servicing in which an interrupt is acknowledged while another interrupt is being serviced. Multiple interrupts can be controlled by priority levels. There are two types of priority level control: control based on the default priority levels, and control based on the programmable priority levels which are specified by the interrupt priority level specification bit (xxPRn). When two or more interrupts having the same priority level specified by xxPRn are generated at the same time, interrupts are serviced in order depending on the priority level allocated to each interrupt request type (default priority level) beforehand. For more information, refer to Table 5-1. Programmable priority control customizes interrupt requests into eight levels by setting the priority level specification flag. Note that when an interrupt request is acknowledged, the ID flag of the PSW is automatically set to ``1''. Therefore, when multiple interrupts are to be used, clear the ID flag to ``0'' beforehand (for example, by placing the EI instruction into the interrupt service program) to set the interrupt enabled mode. Remark xx: Identification name of each peripheral unit (refer to Table 5-2) n: Number of each peripheral unit (refer to Table 5-2) 158 User's Manual U13850EJ6V0UD CHAPTER 5 INTERRUPT/EXCEPTION PROCESSING FUNCTION Figure 5-6. Example of Multiple Interrupt Servicing (1/2) Main routine Servicing of a EI Interrupt request a (level 3) Servicing of b EI Interrupt request b (level 2) Interrupt request b is acknowledged because the priority of b is higher than that of a and interrupts are enabled. Servicing of c Interrupt request c (level 3) Interrupt request d (level 2) Servicing of d Although the priority of interrupt request d is higher than that of c, d is held pending because interrupts are disabled. Servicing of e EI Interrupt request e (level 2) Interrupt request f is held pending even if interrupts are enabled because its priority is lower than that of e. Interrupt request f (level 3) Servicing of f Servicing of g EI Interrupt request g (level 1) Interrupt request h (level 1) Servicing of h Interrupt request h is held pending even if interrupts are enabled because its priority is the same as that of g. Caution The values of EIPC and EIPSW must be saved before executing multiple interrupts. Remarks 1. a to u in the figure are the names of interrupt requests shown for the sake of explanation. 2. The default priority in the figure indicates the relative priority between two interrupt requests. User's Manual U13850EJ6V0UD 159 CHAPTER 5 INTERRUPT/EXCEPTION PROCESSING FUNCTION Figure 5-6. Example of Multiple Interrupt Servicing (2/2) Main routine Servicing of i EI Interrupt request i (level 2) Processing of k EI Interrupt request j (level 3) Interrupt request k (level 1) Interrupt request j is held pending because its priority is lower than that of i. k that occurs after j is acknowledged because it has the higher priority. Servicing of j Servicing of l Interrupt request l (level 2) Interrupt requests m and n are held pending because servicing of l is performed in the interrupt disabled status. Interrupt request m (level 3) Interrupt request n (level 1) Servicing of n Pending interrupt requests are acknowledged after servicing of interrupt request l. At this time, interrupt requests n is acknowledged first even though m has occurred first because the priority of n is higher than that of m. Servicing of m Interrupt request o (level 3) Interrupt request p (level 2) Servicing of o Servicing of p EI Servicing of q EI Servicing of r EI Interrupt request q EI Interrupt (level 1) request r (level 0) If levels 3 to 0 are acknowledged Servicing of s Interrupt request s (level 1) Interrupt request t (level 2) Interrupt request u (level 2) Pending interrupt requests t and u are acknowledged after processing of s. Because the priorities of t and u are the same, u is acknowledged first because it has the higher default priority, regardless of the order in which the interrupt requests have been generated. Note 1 Note 2 Servicing of u Servicing of t Notes 1. Lower default priority 2. Higher default priority 160 User's Manual U13850EJ6V0UD CHAPTER 5 INTERRUPT/EXCEPTION PROCESSING FUNCTION Figure 5-7. Example of Servicing Interrupt Requests Generated Simultaneously Main routine EI Interrupt request a (level 2) Interrupt request b (level 1)Note 1 Interrupt request c (level 1)Note 2 NMI request Servicing of interrupt request b Servicing of interrupt request c * Interrupt request b and c are acknowledged first according to their priorities. * Because the priorities of b and c are the same, b is acknowledged first because it has the higher default priority. Servicing of interrupt request a Notes 1. Higher default priority 2. Lower default priority Remarks 1. a, b, and c in the above figure are the names of interrupt requests shown for the sake of explanation. 2. The default priority in the above figure indicates the relative priority between two interrupt requests. User's Manual U13850EJ6V0UD 161 CHAPTER 5 INTERRUPT/EXCEPTION PROCESSING FUNCTION 5.3.4 Interrupt control register (xxICn) An interrupt control register is assigned to each maskable interrupt and sets the control conditions for each maskable interrupt request. The interrupt control register can be read/written in 8-bit or 1-bit units. Cautions 1. If the following three conditions conflict, interrupt servicing is executed twice. However, when DMA is not used, interrupt servicing is not executed twice. * Execution of a bit manipulation instruction corresponding to the interrupt request flag (xxIFn) * An interrupt via hardware of the same interrupt control register (xxICn) as the interrupt request flag (xxIFn) is generated * DMA is started during execution of a bit manipulation instruction corresponding to the interrupt request flag (xxIFn) Two workarounds using software are shown below. * Insert a DI instruction before the software-based bit manipulation instruction and an EI instruction after it, so that jumping to an interrupt immediately after the bit manipulation instruction execution does not occur. * When an interrupt request is acknowledged, since the hardware becomes interrupt disabled (DI state), clear the interrupt request flag (xxIFn) before executing the EI instruction in each interrupt servicing routine. 2. Read the xxIFn bit of the xxICn register with interrupts disabled. When the xxIFn bit is read with interrupts enabled, a normal value may not be read if the interrupt acknowledgment timing and the bit read timing conflict. 162 User's Manual U13850EJ6V0UD CHAPTER 5 After reset: 47H INTERRUPT/EXCEPTION PROCESSING FUNCTION R/W Address: FFFFF100H to FFFFF156H Symbol <7> <6> 5 4 3 2 1 0 xxICn xxIFn xxMKn 0 0 0 xxPRn2 xxPRn1 xxPRn0 Interrupt request flagNote xxIFn 0 Interrupt request not generated 1 Interrupt request generated xxMKn Interrupt mask flag 0 Interrupt servicing enabled 1 Interrupt servicing disabled (pending) xxPRn2 xxPRn1 xxPRn0 Interrupt priority specification bit 0 0 0 Specifies level 0 (highest) 0 0 1 Specifies level 1 0 1 0 Specifies level 2 0 1 1 Specifies level 3 1 0 0 Specifies level 4 1 0 1 Specifies level 5 1 1 0 Specifies level 6 1 1 1 Specifies level 7 (lowest) Note Automatically reset by hardware when an interrupt request is acknowledged. Remark xx: Identification name of each peripheral unit (see Table 5-2) n: Peripheral unit number (see Table 5-2) User's Manual U13850EJ6V0UD 163 CHAPTER 5 INTERRUPT/EXCEPTION PROCESSING FUNCTION The address and bits of each interrupt control register are as follows. Table 5-2. Interrupt Control Register (xxICn) Address Register Bit <7> <6> 5 4 3 2 1 0 FFFFF100H WDTIC WDTIF WDTMK 0 0 0 WDTPR2 WDTPR1 WDTPR0 FFFFF102H PIC0 PIF0 PMK0 0 0 0 PPR02 PPR01 PPR00 FFFFF104H PIC1 PIF1 PMK1 0 0 0 PPR12 PPR11 PPR10 FFFFF106H PIC2 PIF2 PMK2 0 0 0 PPR22 PPR21 PPR20 FFFFF108H PIC3 PIF3 PMK3 0 0 0 PPR32 PPR31 PPR30 FFFFF10AH PIC4 PIF4 PMK4 0 0 0 PPR42 PPR41 PPR40 PPR50 FFFFF10CH PIC5 PIF5 PMK5 0 0 0 PPR52 PPR51 FFFFF10EH PIC6 PIF6 PMK6 0 0 0 PPR62 PPR61 PPR60 FFFFF118H WTNIIC WTNIIF WTNIMK 0 0 0 WTNIPR2 WTNIPR1 WTNIPR0 FFFFF11AH TMIC00 TMIF00 TMMK00 0 0 0 TMPR002 TMPR001 TMPR000 FFFFF11CH TMIC01 TMIF01 TMMK01 0 0 0 TMPR012 TMPR011 TMPR010 FFFFF11EH TMIC10 TMIF10 TMMK10 0 0 0 TMPR102 TMPR101 TMPR100 FFFFF120H TMIC11 TMIF11 TMMK11 0 0 0 TMPR112 TMPR111 TMPR110 FFFFF122H TMIC2 TMIF2 TMMK2 0 0 0 TMPR22 TMPR21 TMPR20 FFFFF124H TMIC3 TMIF3 TMMK3 0 0 0 TMPR32 TMPR31 TMPR30 FFFFF126H TMIC4 TMIF4 TMMK4 0 0 0 TMPR42 TMPR41 TMPR40 FFFFF128H TMIC5 TMIF5 TMMK5 0 0 0 TMPR52 TMPR51 TMPR50 FFFFF12AH TMIC6 TMIF6 TMMK6 0 0 0 TMPR62 TMPR61 TMPR60 FFFFF12CH TMIC7 TMIF7 TMMK7 0 0 0 TMPR72 TMPR71 TMPR70 FFFFF12EH CSIC0 CSIF0 CSMK0 0 0 0 CSPR02 CSPR01 CSPR00 FFFFF130H SERIC0 SERIF0 SERMK0 0 0 0 SERPR02 SERPR01 SERPR00 FFFFF132H CSIC1 CSIF1 CSMK1 0 0 0 CSPR12 CSPR11 CSPR10 FFFFF134H STIC0 STIF0 STMK0 0 0 0 STPR02 STPR01 STPR00 FFFFF136H CSIC2 CSIF2 CSMK2 0 0 0 CSPR22 CSPR21 CSPR20 FFFFF138H IICIC1Note 1 IICIF1 IICMK1 0 0 0 IICPR12 IICPR11 IICPR10 FFFFF13AH SERIC1 SERIF1 SERMK1 0 0 0 SERPR12 SERPR11 SERPR10 FFFFF13CH CSIC3 CSIF3 CSMK3 0 0 0 CSPR32 CSPR31 CSPR30 FFFFF13EH STIC1 STIF1 STMK1 0 0 0 STPR12 STPR11 STPR10 FFFFF140H CSIC4 CSIF4 CSMK4 0 0 0 CSPR42 CSPR41 CSPR40 FFFFF142H IEBIC1Note 2 IEBIF1 IEBMK1 0 0 0 IEBPR12 IEBPR11 IEBPR10 FFFFF144H IEBIC2Note 2 IEBIF2 IEBMK2 0 0 0 IEBPR22 IEBPR21 IEBPR20 FFFFF146H ADIC ADIF ADMK 0 0 0 ADPR2 ADPR1 ADPR0 FFFFF148H DMAIC0 DMAIF0 DMAMK0 0 0 0 DMAPR02 DMAPR01 DMAPR00 FFFFF14AH DMAIC1 DMAIF1 DMAMK1 0 0 0 DMAPR12 DMAPR11 DMAPR10 DMAPR20 FFFFF14CH DMAIC2 DMAIF2 DMAMK2 0 0 0 DMAPR22 DMAPR21 FFFFF14EH DMAIC3 DMAIF3 DMAMK3 0 0 0 DMAPR32 DMAPR31 DMAPR30 FFFFF150H DMAIC4 DMAIF4 DMAMK4 0 0 0 DMAPR42 DMAPR41 DMAPR40 FFFFF152H DMAIC5 DMAIF5 DMAMK5 0 0 0 DMAPR52 DMAPR51 DMAPR50 FFFFF154H WTNIC WTNIF WTNMK 0 0 0 WTNPR2 WTNPR1 WTNPR0 FFFFF156H KRIC KRIF KRMK 0 0 0 KRPR2 KRPR1 KRPR0 Notes 1. 2. 164 2 Available only in the Y versions (products with on-chip I C). Available only in the V850/SB2. User's Manual U13850EJ6V0UD CHAPTER 5 INTERRUPT/EXCEPTION PROCESSING FUNCTION 5.3.5 In-service priority register (ISPR) This register holds the priority level of the maskable interrupt currently acknowledged. When an interrupt request is acknowledged, the bit of this register corresponding to the priority level of that interrupt is set to 1 and remains set while the interrupt is serviced. When the RETI instruction is executed, the bit corresponding to the interrupt request having the highest priority is automatically reset to 0 by hardware. However, it is not reset when execution is returned from non-maskable processing or exception processing. This register is read-only in 8-bit or 1-bit units. Caution Read the ISPR register with interrupts disabled. When the ISPR register is read with interrupts enabled, a normal value may not be read if the interrupt acknowledgment timing and the bit read timing conflict. After reset: 00H R Address: FFFFF166H Symbol <7> <6> <5> <4> <3> <2> <1> <0> ISPR ISPR7 ISPR6 ISPR5 ISPR4 ISPR3 ISPR2 ISPR1 ISPR0 ISPRn Remark Indicates priority of interrupt currently acknowledged 0 Interrupt request with priority n not acknowledged 1 Interrupt request with priority n acknowledged n: 0 to 7 (priority level) 5.3.6 ID flag The interrupt disable status flag (ID) of the PSW controls the enabling and disabling of maskable interrupt requests. As a status flag, it also displays the current maskable interrupt acknowledgment status. After reset: 00000020H Symbol 31 8 PSW 0 ID 7 6 5 4 3 2 NP EP ID SAT CY OV 1 0 S Z Specifies maskable interrupt servicingNote 0 Maskable interrupt acknowledgment enabled 1 Maskable interrupt acknowledgment disabled (pending) Note Interrupt disable flag (ID) function It is set to 1 by the DI instruction and reset to 0 by the EI instruction. Its value is also modified by the RETI instruction or LDSR instruction when referencing the PSW. Non-maskable interrupt requests and exceptions are acknowledged regardless of this flag. When a maskable interrupt is acknowledged, the ID flag is automatically set to 1 by hardware. The interrupt request generated during the acknowledgment disabled period (ID = 1) can be acknowledged when the xxIFn bit of xxICn is set to 1, and the ID flag is reset to 0. Remark xx: Identification name of each peripheral unit (refer to Table 5-2) n: Number of each peripheral unit (refer to Table 5-2) User's Manual U13850EJ6V0UD 165 CHAPTER 5 INTERRUPT/EXCEPTION PROCESSING FUNCTION 5.3.7 Watchdog timer mode register (WDTM) This register can be read/written in 8-bit or 1-bit units (for details, refer to CHAPTER 9 WATCHDOG TIMER). After reset: 00H R/W Address: FFFFF384H Symbol <7> 6 5 4 3 2 1 0 WDTM RUN 0 0 WDTM4 0 0 0 0 RUN Watchdog timer operation control 0 Count operation stopped 1 Count start after clearing WDTM4 Caution Timer mode selection/interrupt control by WDT 0 Interval timer mode 1 WDT mode If the RUN or WDTM4 bit is set to 1, it cannot be cleared other than by reset input. 5.3.8 Noise elimination (1) Noise elimination of INTP0 to INTP3 pins The INTP0 to INTP3 pins incorporate a noise eliminator that functions using analog delay. Therefore, a signal input to each pin is not detected as an edge, unless it maintains its input level for a certain period. An edge is detected after a certain period has elapsed. (2) Noise elimination of INTP4 and INTP5 pins The INTP4 and INTP5 pins incorporate a digital noise eliminator. If the input level of the INTP pin is detected by the sampling clock (fXX) and the same level is not detected three successive times, the input pulse is eliminated as a noise. Note the following. * If the input pulse width is between 2 and 3 clocks, whether the input pulse is detected as a valid edge or eliminated as noise is undefined. * To securely detect the valid edge, the same level input of 3 clocks or more is required. * When noise is generated in synchronization with the sampling clock, this may not be recognized as noise. In this case, eliminate the noise by adding a filter to the input pin. 166 User's Manual U13850EJ6V0UD CHAPTER 5 INTERRUPT/EXCEPTION PROCESSING FUNCTION (3) Noise elimination of INTP6 pin The INTP6 pin incorporates a digital noise eliminator. The sampling clock for digital sampling can be selected from among fXX, fXX/64, fXX/128, fXX/256, fXX/512, fXX/1024, and fXT. Sampling is performed 3 times. (a) Noise elimination control register (NCC) The noise elimination control register (NCC) selects the clock to be used. Remote control signals can be received effectively with this function. fXT can be used for the noise elimination clock. In this case, the INTP6 external interrupt function is enabled in the IDLE/STOP mode. This register can be read/written in 8-bit or 1-bit units. Caution After the sampling clock has been changed, it takes 3 sampling clocks to initialize the noise eliminator. For that reason, if an INTP6 valid edge was input within these 3 clocks, an interrupt request may occur. Therefore, be careful of the following when using the interrupt and DMA functions. * When using the interrupt function, after 3 sampling clocks have elapsed, enable interrupts after the interrupt request flag (bit 7 of PIC6) has been cleared. * When using the DMA function, after 3 sampling clocks have elapsed, enable DMA by setting bit 0 of DCHCn. After reset: 00H NCC R/W 7 6 5 4 3 2 1 0 0 0 0 0 0 NCS2 NCS1 NCS0 NCS2 Notes 1. Address: FFFFF3D4H NCS1 NCS0 Noise elimination clock Reliably eliminated noise widthNote 1 fXX = 20 MHzNote 2 fXX = 12.58 MHz 0 0 0 fXX 100 ns 158 ns 0 0 1 fXX/64 6.4 s 10.1 s 0 1 0 fXX/128 12.8 s 20.3 s 0 1 1 fXX/256 25.6 s 40.6 s 1 0 0 fXX/512 51.2 s 81.3 s 1 0 1 fXX/1024 102.4 s 162.7 s 1 1 0 Setting prohibited 1 1 1 fXT 61 s Since sampling is preformed three times, the reliably eliminated noise width is 2 x noise elimination clock. 2. Only in the V850/SB1. User's Manual U13850EJ6V0UD 167 CHAPTER 5 INTERRUPT/EXCEPTION PROCESSING FUNCTION 5.3.9 Edge detection function The valid edges of the INTP0 to INTP6 pins can be selected for each pin from the following four types. * Rising edge * Falling edge * Both rising and falling edges * Neither edge The validity of the rising edge is controlled by rising edge specification register 0 (EGP0), and the validity of the falling edge is controlled by falling edge specification register 0 (EGN0). Refer to 5.2.5 Edge detection function of NMI pin for details of EGP0 and EGN0. After reset, the valid edge of the NMI pin is set to the "detect neither rising nor falling edge" state. Therefore, the NMI pin functions as a normal port and an interrupt request cannot be acknowledged, unless a valid edge is specified by using the EGP0 and EGN0 registers. When using P01 to P07 as output ports, set the valid edges of INTP0 to INTP6 to "detect neither rising nor falling edge" or mask the interrupt request. 168 User's Manual U13850EJ6V0UD CHAPTER 5 INTERRUPT/EXCEPTION PROCESSING FUNCTION 5.4 Software Exceptions A software exception is generated when the CPU executes the TRAP instruction, and can be always acknowledged. * TRAP instruction format: TRAP vector (where vector is 0 to 1FH) For details of the instruction function, refer to the V850 Series Architecture User's Manual. 5.4.1 Operation If a software exception occurs, the CPU performs the following processing, and transfers control to the handler routine. (1) Saves the restored PC to EIPC. (2) Saves the current PSW to EIPSW. (3) Writes an exception code to the lower 16 bits (EICC) of ECR (interrupt source). (4) Sets the EP and ID bits of the PSW. (5) Loads the handler address (00000040H or 00000050H) of the software exception routine in the PC, and transfers control. How a software exception is processed is shown below. Figure 5-8. Software Exception Processing TRAP instruction CPU processing EIPC EIPSW ECR.EICC PSW.EP PSW.ID PC Restored PC PSW Exception code 1 1 Handler address Exception processing User's Manual U13850EJ6V0UD Handler address: 00000040H (Vector = 0nH) 00000050H (Vector = 1nH) 169 CHAPTER 5 INTERRUPT/EXCEPTION PROCESSING FUNCTION 5.4.2 Restore To restore or return execution from the software exception service routine, the RETI instruction is used. Operation of RETI instruction When the RETI instruction is executed, the CPU performs the following steps, and transfers control to the address of the restored PC. (1) Restores the restored PC and PSW from EIPC and EIPSW because the EP bit of the PSW is 1. (2) Transfers control to the address of the restored PC and PSW. The processing of the RETI instruction is shown below. Figure 5-9. RETI Instruction Processing RETI instruction 1 PSW.EP 0 PSW.NP 1 0 PC PSW EIPC EIPSW PC PSW FEPC FEPSW Original processing restored Caution When the PSW.EP bit and the PSW.NP bit are changed by the LDSR instruction during the software exception process, in order to restore the PC and PSW correctly during recovery by the RETI instruction, it is necessary to set PSW.EP back to 1 using the LDSR instruction immediately before the RETI instruction. Remark 170 The solid line shows the CPU processing flow. User's Manual U13850EJ6V0UD CHAPTER 5 INTERRUPT/EXCEPTION PROCESSING FUNCTION 5.4.3 EP flag The EP flag in the PSW is a status flag used to indicate that exception processing is in progress. It is set when an exception occurs, and interrupts are disabled. After reset: 00000020H Symbol 31 8 PSW 0 7 6 5 4 3 2 NP EP ID SAT CY OV EP 1 0 S Z Exception processing 0 Exception processing is not in progress 1 Exception processing is in progress 5.5 Exception Trap The exception trap is an interrupt that is requested when illegal execution of an instruction takes place. In the V850/SB1 or V850/SB2, an illegal opcode exception (ILGOP: ILeGal OPcode trap) is considered as an exception trap. * Illegal opcode exception: Occurs if the sub opcode field of the instruction to be executed next is not a valid opcode. 5.5.1 Illegal opcode definition An illegal opcode is defined to be a 32-bit word with bits 5 to 10 being 111111B and bits 23 to 26 being 0011B to 1111B. Figure 5-10. Illegal Opcode 15 13 12 11 10 5 4 0 31 27 26 23 22 21 20 17 16 0 0 1 1 to x x x x x 1 1 1 1 1 1 x x x x x x x x x x x x x x x x x 1 1 1 1 x: don't care 5.5.2 Operation If an exception trap occurs, the CPU performs the following processing, and transfers control to the handler routine. (1) Saves the restored PC to EIPC. (2) Saves the current PSW to EIPSW. (3) Writes an exception code (0060H) to the lower 16 bits (EICC) of ECR. (4) Sets the EP and ID bits of the PSW. (5) Loads the handler address (00000060H) for the exception trap routine to the PC, and transfers control. User's Manual U13850EJ6V0UD 171 CHAPTER 5 INTERRUPT/EXCEPTION PROCESSING FUNCTION How the exception trap is processed is shown below. Figure 5-11. Exception Trap Processing Exception trap (ILGOP) occurs CPU processing EIPC EIPSW ECR.EICC PSW.EP PSW.ID PC Restored PC PSW Exception code 1 1 00000060H Exception processing 172 User's Manual U13850EJ6V0UD CHAPTER 5 INTERRUPT/EXCEPTION PROCESSING FUNCTION 5.5.3 Restore To restore or return execution from the exception trap, the RETI instruction is used. Operation of RETI instruction When the RETI instruction is executed, the CPU performs the following processing, and transfers control to the address of the restored PC. (1) Restores the restored PC and PSW from EIPC and EIPSW because the EP bit of the PSW is 1. (2) Transfers control to the address of the restored PC and PSW. The processing of the RETI instruction is shown below. Figure 5-12. RETI Instruction Processing RETI instruction 1 PSW. EP 0 PSW. NP 1 0 PC PSW EIPC EIPSW PC PSW FEPC FEPSW Jump to PC Caution When the PSW.EP bit and the PSW.NP bit are changed by the LDSR instruction during the exception trap process, in order to restore the PC and PSW correctly during recovery by the RETI instruction, it is necessary to set PSW.EP back to 1 using the LDSR instruction immediately before the RETI instruction. Remark The solid line shows the CPU processing flow. User's Manual U13850EJ6V0UD 173 CHAPTER 5 INTERRUPT/EXCEPTION PROCESSING FUNCTION 5.6 Priority Control 5.6.1 Priorities of interrupts and exceptions Table 5-3. Priorities of Interrupts and Exceptions RESET RESET NMI INT TRAP ILGOP * * * * NMI x INT x TRAP x ILGOP x RESET: Reset NMI: Non-maskable interrupt INT: Maskable interrupt TRAP: Software exception ILGOP: Illegal opcode exception *: The item on the left ignores the item above. x: The item on the left is ignored by the item above. : The item above is higher than the item on the left in priority. : The item on the left is higher than the item above in priority. 5.6.2 Multiple interrupt servicing Multiple interrupt servicing is a function that allows the nesting of interrupts. If a higher priority interrupt is generated and acknowledged, it will be allowed to stop a current interrupt service routine in progress. Execution of the original routine will resume once the higher priority interrupt routine is completed. If an interrupt with a lower or equal priority is generated and a service routine is currently in progress, the later interrupt will be held pending. Multiple interrupt servicing control is performed in the interrupt enabled state (ID = 0). Even in an interrupt servicing routine, this control must be set in the interrupt enabled state (ID = 0). If a maskable interrupt is acknowledged or exception is generated during a service program of a maskable interrupt or exception, EIPC and EIPSW must be saved. The following example shows the procedure of interrupt nesting. 174 User's Manual U13850EJ6V0UD CHAPTER 5 INTERRUPT/EXCEPTION PROCESSING FUNCTION (1) To acknowledge maskable interrupts in service program Service program of maskable interrupt or exception ... ... * Save EIPC to memory or register * Save EIPSW to memory or register * EI instruction (enables interrupt acknowledgment) Acknowledgment interrupt such as INTP input. ... ... * DI instruction (disables interrupt acknowledgment) * Restore saved value to EIPSW * Restore saved value to EIPC * RETI instruction (2) To generate exception in service program Service program of maskable interrupt or exception ... ... * Save EIPC to memory or register * Save EIPSW to memory or register * EI instruction (enables interrupt acknowledgment) ... Acknowledgment exception such as TRAP instruction. * TRAP instruction Acknowledgment exception such as illegal opcode. * Illegal opcode ... * Restore saved value to EIPSW * Restore saved value to EIPC * RETI instruction User's Manual U13850EJ6V0UD 175 CHAPTER 5 INTERRUPT/EXCEPTION PROCESSING FUNCTION Priorities 0 to 7 (0 is the highest) can be programmed for each maskable interrupt request for multiple interrupt servicing control. To set a priority level, write values to the xxPRn0 to xxPRn2 bits of the interrupt request control register (xxICn) corresponding to each maskable interrupt request. At reset, the interrupt request is masked by the xxMKn bit, and the priority level is set to 7 by the xxPRn0 to xxPRn2 bits. Remark xx: Identification name of each peripheral unit (refer to Table 5-2) n: Number of each peripheral unit (refer to Table 5-2) Priorities of maskable interrupts (High) Level 0 > Level 1 > Level 2 > Level 3 > Level 4 > Level 5 > Level 6 > Level 7 (Low) Interrupt servicing that has been suspended as a result of multiple interrupt servicing is resumed after the interrupt servicing of the higher priority has been completed and the RETI instruction has been executed. A pending interrupt request is acknowledged after the current interrupt servicing has been completed and the RETI instruction has been executed. Caution In the non-maskable interrupt servicing routine (time until the RETI instruction is executed), maskable interrupts are not acknowledged but are suspended. 176 User's Manual U13850EJ6V0UD CHAPTER 5 INTERRUPT/EXCEPTION PROCESSING FUNCTION 5.7 Interrupt Latency Time The following table describes the interrupt latency time (from interrupt request generation to start of interrupt servicing). Figure 5-13. Pipeline Operation at Interrupt Request Acknowledgment 7 to 14 system clocks 4 system clocks System clock Interrupt request Instruction 1 IF ID EX MEM WB Instruction 2 IFX IDX Instruction 3 IFX INT1 INT2 INT3 INT4 Interrupt acknowledgment operation Instruction (start instruction of interrupt servicing routine) IF ID EX MEM WB INT1 to INT4: Interrupt acknowledgment processing IFX: Invalid instruction fetch IDX: Invalid instruction decode Interrupt Latency Time (System Clock) Internal interrupt External interrupt Minimum 11 13 Maximum 18 20 Condition Time to eliminate noise (2 system clocks) is also necessary for external interrupts, except when: * In IDLE/STOP mode * External bus is accessed * Two or more interrupt request non-sample instructions are executed in succession * An interrupt control register is accessed 5.8 Periods in Which Interrupt Is Not Acknowledged An interrupt is acknowledged while an instruction is being executed. However, no interrupt will be acknowledged between an interrupt request non-sample instruction and the next instruction. Interrupt request non-sample instruction * EI instruction * DI instruction * LDSR reg2, 0x5 instruction (vs. PSW) User's Manual U13850EJ6V0UD 177 CHAPTER 5 INTERRUPT/EXCEPTION PROCESSING FUNCTION 5.8.1 Interrupt request valid timing after EI instruction When an interrupt request signal is generated (IF flag = 1) in the status in which the DI instruction is executed (interrupts disabled) and interrupts are not masked (MK flag = 0), seven system clocks are required from the execution of the EI instruction (interrupts enabled) to the interrupt request acknowledgment by the CPU. The CPU does not acknowledge interrupt requests if the DI instruction (interrupts disabled) is executed during the seven system clocks. Therefore, seven system clocks worth of instruction execution clocks must be inserted after the EI instruction (interrupts enabled). However, under the following conditions, interrupt requests cannot be acknowledged even if the seven system clocks are secured, so securing under the following conditions is prohibited. * In IDLE/STOP mode * An interrupt request non-sampling instruction (instruction to manipulate the PSW.ID bit) is executed * An interrupt request control register (xxICn) is accessed The following shows an example of program processing. [Program processing example] DI : ; (MK flag = 0) : ; Interrupt request occurs (IF flag = 1) EI ; EI instruction executed NOP ; 1 system clock NOP ; 1 system clock NOP ; 1 system clock NOP ; 1 system clock JR LP1 Note ; 3 system clocks (branch to LP1 routine) : LP1 : ; LPI routine DI ; After EI instruction execution, NOP instruction is executed four times, and DI instruction is executed at the eighth clock by JR instruction Note Do not execute the DI instruction (PSW.ID = 1) during this period. Remarks 1. In this example, the DI instruction is executed at the eighth clock after execution of the EI instruction, so the CPU acknowledges an interrupt request signal and performs interrupt servicing. 2. The interrupt servicing routine instructions are not executed at the eighth clock after the EI instruction execution. The interrupt servicing routine instructions are executed four system clocks after the CPU acknowledges the interrupt request signal. 3. This example shows the case in which an interrupt request signal is generated (IF flag = 1) before the EI instruction is executed. If an interrupt request signal is generated after the EI instruction is executed, the CPU does not acknowledge the interrupt request signal if interrupts are disabled (PSW.ID = 1) for seven clocks after the IF flag is set (1). 178 User's Manual U13850EJ6V0UD CHAPTER 5 INTERRUPT/EXCEPTION PROCESSING FUNCTION Figure 5-14. Pipeline Flow and Interrupt Request Signal Generation Timing (a) When DI instruction is executed at eighth clock after EI instruction execution (interrupt request is acknowledged) EI IF ID EX MEM WB NOP IF ID EX MEM WB NOP IF ID EX MEM WB IF ID EX MEM WB NOP IF ID EX MEM WB NOP IF ID EX MEM WB NOP IF ID EX MEM WB IF ID EX MEM WB DI IF ID EX MEM NOP NOP WB ei signal intrq signal intrq signal is generated (b) When DI instruction is executed at seventh clock after EI instruction execution (interrupt request is not acknowledged) EI IF ID EX MEM WB NOP IF ID EX MEM WB NOP IF ID EX MEM WB IF ID EX MEM WB NOP IF ID EX MEM WB NOP IF ID EX MEM WB NOP IF ID EX MEM WB DI IF ID EX MEM NOP WB ei signal intrq signal intrq signal is not generated 5.9 Interrupt Control Register Bit Manipulation Instructions During DMA Transfer To manipulate the bits of the interrupt control register (xxICn) in the EI state when using the DMA function, execute the DI instruction before manipulation and EI instruction after manipulation. Alternatively, clear (0) the xxIF bit at the start of the interrupt servicing routine. When not using the DMA function, these manipulations are not necessary. Remark xx: Peripheral unit identification name (see Table 5-2) N: Peripheral unit number (see Table 5-2) User's Manual U13850EJ6V0UD 179 CHAPTER 5 INTERRUPT/EXCEPTION PROCESSING FUNCTION 5.10 Key Interrupt Function Key interrupts can be generated by inputting a falling edge to the key input pins (KR0 to KR7) by setting the key return mode register (KRM). The key return mode register (KRM) includes 5 bits. The KRM0 bit controls the KR0 to KR3 signals in 4-bit units and the KRM4 to KRM7 bits control corresponding signals from KR4 to KR7 (arbitrary setting from 4 to 8 bits is possible). This register can be read/written in 8-bit or 1-bit units. (1) Key return mode register (KRM) After reset: KRM 00H R/W Address: FFFFF3D0H <7> <6> <5> <4> 3 2 1 <0> KRM7 KRM6 KRM5 KRM4 0 0 0 KRM0 KRMn Caution Key return mode control 0 Do not detect key return signal 1 Detect key return signal If the key return mode register (KRM) is changed, an interrupt request flag may be set. To avoid setting this flag, change the KRM register after disabling interrupts, and then enable interrupts after clearing the interrupt request flag. Table 5-4. Description of Key Return Detection Pin Flag 180 Pin Description KRM0 Controls KR0 to KR3 signals in 4-bit units KRM4 Controls KR4 signal in 1-bit units KRM5 Controls KR5 signal in 1-bit units KRM6 Controls KR6 signal in 1-bit units KRM7 Controls KR7 signal in 1-bit units User's Manual U13850EJ6V0UD CHAPTER 5 INTERRUPT/EXCEPTION PROCESSING FUNCTION Figure 5-15. Key Return Block Diagram KR7 KR6 KR5 KR4 INTKR KR3 KR2 KR1 KR0 KRM7 KRM6 KRM5 KRM4 0 0 0 KRM0 Key return mode register (KRM) User's Manual U13850EJ6V0UD 181 CHAPTER 6 CLOCK GENERATION FUNCTION 6.1 Outline The clock generator is a circuit that generates the clock pulses that are supplied to the CPU and peripheral hardware. There are two types of clock oscillators. (1) Main clock oscillator The oscillator of V850/SB1 has an oscillation frequency of 2 to 20 MHz. The oscillator of the A and B versions of the V850/SB2 has an oscillation frequency of 2 to 12.58 MHz and the oscillator of the H version of the V850/SB2 has an oscillation frequency of 2 to 19 MHz. Oscillation can be stopped by executing a STOP instruction or by setting the processor clock control register (PCC). Oscillation is also stopped during a reset. In IDLE mode, supplying the peripheral clock to the clock timer only is possible. Therefore, in IDLE mode, it is possible to operate the clock timer without using the subclock oscillator. Cautions 1. When the main oscillator is stopped by inputting a reset or executing a STOP instruction, the oscillation stabilization time is secured after the stop mode is released. This oscillation stabilization time is set via the oscillation stabilization time selection register (OSTS). The watchdog timer is used as the timer that counts the oscillation stabilization time. 2. If the main clock halt is released by clearing MCK to 0 after the main clock is stopped by setting the MCK bit in the PCC register to 1, the oscillation stabilization time is not secured. (2) Subclock oscillator This circuit has an oscillation frequency of 32.768 kHz. Its oscillation is not stopped when the STOP instruction is executed, neither is it stopped when a reset is input. When the subclock oscillator is not used, the FRC bit in the processor clock control register (PCC) can be set to disable use of the internal feedback resistor. This enables the current consumption to be kept low in the STOP mode. 182 User's Manual U13850EJ6V0UD CHAPTER 6 CLOCK GENERATION FUNCTION 6.2 Configuration Figure 6-1. Clock Generator FRC XT1 XT2 Subclock oscillator Clock supplied to watch timer, etc. fXT IDLE control IDLE X1 X2 Main clock oscillator IDLE control fXX CK2 to CK0 Prescaler HALT fXT fXX/2 fXX/4 fXX/8 Selector STP, MCK Prescaler HALT control CPU clock (fCPU) Clock supplied to peripheral hardware CLKOUT 6.3 Clock Output Function This function outputs the CPU clock via the CLKOUT pin. When clock output is enabled, the CPU clock is output via the CLKOUT pin. When it is disabled, a low-level signal is output via the CLKOUT pin. Output is stopped in the IDLE or STOP mode (fixed to low level). This function is controlled via the DCLK1 and DCLK0 bits in the power save control register (PSC). The high-impedance status is set during the reset period. After reset is released, a low level is output. Caution While CLKOUT is being output, do not change the CPU clock (CK2 to CK0 bits of processor clock control register (PCC)). User's Manual U13850EJ6V0UD 183 CHAPTER 6 CLOCK GENERATION FUNCTION 6.3.1 Control registers (1) Processor clock control register (PCC) This is a specific register. It can be written to only when a specified combination of sequences is used (see 3.4.9 Specific registers). This register can be read/written in 8-bit or 1-bit units. After reset: 03H PCC R/W Address: FFFFF074H <7> <6> 5 4 3 <2> 1 0 FRC MCK 0 0 0 CK2 CK1 CK0 FRC Selection of internal feedback resistor for subclock 0 Use 1 Do not use MCK Operation of main clock (main clock) 0 Operating 1 Stopped CK2Notes 1, 2 CK1 CK0 0 0 0 fXX 0 0 1 fXX/2 0 1 0 fXX/4 0 1 1 fXX/8 1 X X fXT (subclock) Selection of CPU clock Notes 1. If manipulating CK2, do so in 1-bit units. In the case of 8-bit manipulation, do not change the values of CK1 and CK0. 2. When the CPU operates on the subclock (CK2 = 1), do not set the HALT or software STOP mode. Cautions 1. While CLKOUT is being output, do not change the CPU clock (the value of the CK2 to CK0 in the PCC register). 2. Even if the MCK bit is set to 1 during main clock operation, the main clock is not stopped. The CPU clock stops after the subclock is selected. 3. Be sure to set bits 3 to 5 to 0. Remark 184 X: don't care User's Manual U13850EJ6V0UD CHAPTER 6 CLOCK GENERATION FUNCTION (a) Example of main clock operation subclock operation setup <1> CK2 1: Bit manipulation instructions are recommended. Do not change CK1 and CK0. <2> Subclock operation: The maximum number of the following instructions is required before subclock operation after the CK2 bit is set. (CPU clock frequency before setting / subclock frequency) x 2 Therefore, insert the wait described above using a program. <3> MCK 1: Only when the main clock is stopped. (b) Example of subclock operation main clock operation setup <1> MCK 0: Main clock oscillation start <2> Insert a wait using a program and wait until the main clock oscillation stabilization time elapses. <3> CK2 0: Bit manipulation instructions are recommended. Do not change CK1 and CK0. <4> Main clock operation: At most two instructions are required before main clock operation after the CK2 bit is set. User's Manual U13850EJ6V0UD 185 CHAPTER 6 CLOCK GENERATION FUNCTION (2) Power save control register (PSC) This is a specific register. It can be written to only when a specified combination of sequences is used. For details, see 3.4.9 Specific registers. This register can be read/written in 8-bit or 1-bit units. After reset: C0H PSC R/W Address: FFFFF070H 7 6 5 4 3 <2> <1> 0 DCLK1 DCLK0 0 0 0 IDLE STP 0 DCLK1 DCLK0 0 0 Output enabled 0 1 Setting prohibited 1 0 Setting prohibited 1 1 Output disabled (when reset) Specification of CLKOUT pin's operation IDLE IDLE mode setting 0 Normal mode 1 IDLE modeNote 1 STP Notes 1. 2. STOP mode setting 0 Normal mode 1 STOP modeNote 2 When IDLE mode is released, this bit is automatically reset to 0. When STOP mode is released, this bit is automatically reset to 0. Caution The DCLK0 and DCLK1 bits should be manipulated in 8-bit units. 186 User's Manual U13850EJ6V0UD CHAPTER 6 CLOCK GENERATION FUNCTION (3) Oscillation stabilization time selection register (OSTS) This register can be read/written in 8-bit units. After reset: OSTS 04H R/W Address: FFFFF380H 7 6 5 4 3 2 1 0 0 0 0 0 0 OSTS2 OSTS1 OSTS0 OSTS2 OSTS1 OSTS0 Selection of oscillation stabilization time Clock fXX 20 MHz Note 12.58 MHz 0 0 0 2 /fxx 819.2 s 1.3 ms 0 0 1 216/fXX 0 0 1 1 1 0 Other than above 0 1 0 14 3.3 ms 5.2 ms 17 6.6 ms 10.4 ms 18 13.1 ms 20.8 ms 19 26.2 ms 41.6 ms 2 /fXX 2 /fXX 2 /fXX Setting prohibited Note Only in the V850/SB1. User's Manual U13850EJ6V0UD 187 CHAPTER 6 CLOCK GENERATION FUNCTION 6.4 Power Save Functions 6.4.1 Outline This product provides the following power saving functions. These modes can be combined and switched to suit the target application, which enables effective implementation of low-power systems. (1) HALT mode When in this mode, the clock's oscillator continues to operate but the CPU's operating clock is stopped. A clock continues to be supplied for other on-chip peripheral functions to maintain operation of those functions. This enables the system's total power consumption to be reduced. A dedicated instruction (the HALT instruction) is used to switch to HALT mode. (2) IDLE mode This mode stops the entire system by stopping the CPU's operating clock as well as the operating clock for onchip peripheral functions while the clock oscillator is still operating. However, the subclock continues to operate and supplies a clock to the on-chip peripheral functions. When this mode is released, there is no need for the oscillator to wait for the oscillation stabilization time, so normal operation can be resumed quickly. When the IDLE bit of the power saving control register (PSC) is set to 1, the system switches to IDLE mode. (3) Software STOP mode This mode stops the entire system by stopping the main clock oscillator. The subclock continues to be supplied to keep on-chip peripheral functions operating. If a subclock is not used, ultra low power consumption mode (leak current only) is set. STOP mode setting is prohibited if the CPU is operating via the subclock. If the STP bit of the PSC register is set to 1, the system enters STOP mode. (4) Subclock operation In this mode, the CPU clock is set to operate using the subclock and the MCK bit of the PCC register is set to 1 to set low power consumption mode in which the entire system operates using only the subclock. When IDLE mode is set, the CPU's operating clock and some peripheral functions (DMAC and BCU) are stopped, so that power consumption can be reduced even more than in HALT mode. 188 User's Manual U13850EJ6V0UD CHAPTER 6 CLOCK GENERATION FUNCTION 6.4.2 HALT mode (1) Settings and operating states In this mode, the clock's oscillator continues to operate but the CPU's operating clock is stopped. A clock continues to be supplied for other on-chip peripheral functions to maintain operation of those functions. When HALT mode is set while the CPU is idle, it enables the system's total power consumption to be reduced. In HALT mode, execution of programs is stopped but the contents of all registers and on-chip RAM are retained as they were just before HALT mode was set. In addition, all on-chip peripheral functions that do not depend on instruction processing by the CPU continue operating. HALT mode can be set by executing the HALT instruction. It can be set when the CPU is operating on the main clock. The operating statuses in the HALT mode are listed in Table 6-1. (2) Release of HALT mode HALT mode can be released by an NMI request, an unmasked maskable interrupt request, or RESET input. (a) Release by interrupt request HALT mode is released regardless of the priority level when an NMI request or an unmasked maskable interrupt request occurs. However, the following occurs if HALT mode was set as part of an interrupt servicing routine. (i) Only HALT mode is released when an interrupt request that has a lower priority level than the interrupt currently being serviced occurs, and the lower-priority interrupt request is not acknowledged. The interrupt request itself is retained. (ii) When an interrupt request (including NMI request) that has a higher priority level than the interrupt currently being serviced occurs, HALT mode is canceled and the interrupt request is acknowledged. (b) Release by RESET pin input This is the same as for normal reset operations. User's Manual U13850EJ6V0UD 189 CHAPTER 6 CLOCK GENERATION FUNCTION Table 6-1. Operating Statuses in HALT Mode (1/2) HALT Mode Setting Item When CPU Operates with Main Clock When Subclock Does Not Exist When Subclock Exists CPU Stopped ROM correction Stopped Clock generator Oscillation for main clock and subclock Clock supply to CPU is stopped 16-bit timer (TM0) Operating 16-bit timer (TM1) Operating 8-bit timer (TM2) Operating 8-bit timer (TM3) Operating 8-bit timer (TM4) Operating 8-bit timer (TM5) Operating 8-bit timer (TM6) Operating 8-bit timer (TM7) Operating Watch timer Operates when main clock is selected for count clock Watchdog timer Operating (interval timer only) Serial interface CSI0 to CSI3 Operating I2C0Note, I2C1Note Operating UART0, UART1 Operating CSI4 Operating IEBus (V850/SB2 only) Operating A/D converter Operating DMA0 to DMA5 Operating Real-time output Operating 2 Note Available only in the Y versions (products with on-chip I C). 190 User's Manual U13850EJ6V0UD Operating CHAPTER 6 CLOCK GENERATION FUNCTION Table 6-1. Operating Statuses in HALT Mode (2/2) HALT Mode Setting When CPU Operates with Main Clock Item When Subclock Does Not Exist Port function Held External bus interface Only bus hold function operates External interrupt request NMI Operating INTP0 to INTP3 Operating INTP4 and INTP5 Operating INTP6 Operating Key return function Operating In external expansion mode AD0 to AD15 High impedanceNote A16 to A21 HeldNote (high impedance when HLDAK = 0) LBEN, UBEN HeldNote (high impedance when HLDAK = 0) R/W High level outputNote (high impedance when HLDAK = 0) When Subclock Exists DSTB, WRL, WRH, RD ASTB HLDAK Operating Note Even when the HALT instruction has been executed, the instruction fetch operation continues until the on-chip instruction prefetch queue becomes full. Once it is full, operation stops according to the status shown in Table 6-1. User's Manual U13850EJ6V0UD 191 CHAPTER 6 CLOCK GENERATION FUNCTION 6.4.3 IDLE mode (1) Settings and operating states This mode stops the entire system except the watch timer by stopping the on-chip main clock supply while the clock oscillator is still operating. Supply to the subclock continues. When this mode is released, there is no need for the oscillator to wait for the oscillation stabilization time, so normal operation can be resumed quickly. In IDLE mode, program execution is stopped and the contents of all registers and internal RAM are retained as they were just before IDLE mode was set. In addition, on-chip peripheral functions are stopped (except for peripheral functions that are operating with the subclock). External bus hold requests (HLDRQ) are not acknowledged. When the IDLE bit of the power saving control register (PSC) is set to 1, the system switches to IDLE mode. The operating statuses in IDLE mode are listed in Table 6-2. (2) Release of IDLE mode IDLE mode can be released by a non-maskable interrupt, an unmasked interrupt request, or RESET input. Table 6-2. Operating Statuses in IDLE Mode (1/2) IDLE Mode Settings When Subclock Exists When Subclock Does Not Exist Item CPU Stopped ROM correction Stopped Clock generator Both main clock and subclock oscillator Clock supply to CPU and on-chip peripheral functions is stopped 16-bit timer (TM0) Operates when INTWTNI is selected as count clock (fXT is selected for watch timer) 16-bit timer (TM1) Stopped 8-bit timer (TM2) Stopped 8-bit timer (TM3) Stopped 8-bit timer (TM4) Operates when fXT is selected for count clock Stopped 8-bit timer (TM5) Operates when fXT is selected for count clock Stopped 8-bit timer (TM6) Operates when TO0 is selected as count clock (however, only when TM0 is operating) 8-bit timer (TM7) Operates when TO0 is selected as count clock (however, only when TM0 is operating) Watch timer Operating Watchdog timer Stopped Serial interface CSI0 to CSI3 2 Note I C0 2 Note , I C1 Operates when an external clock is selected as the serial clock Stopped UART0, UART1 Operates when an external clock is selected as the baud-rate clock (transmit only) CSI4 Operates when an external clock is selected as the serial clock IEBus (V850/SB2 only) Stopped A/D converter Stopped DMA0 to DMA5 Stopped Real-time output Operates when INTTM4 or INTTM5 is selected (when TM4 or TM5 is operating) Port function Held 2 Note Available only in the Y versions (products with on-chip I C). 192 Stopped User's Manual U13850EJ6V0UD Stopped CHAPTER 6 CLOCK GENERATION FUNCTION Table 6-2. Operating Statuses in IDLE Mode (2/2) IDLE Mode Settings When Subclock Exists When Subclock Does Not Exist Item External bus interface Stopped External interrupt request NMI Operating INTP0 to INTP3 Operating INTP4 and INTP5 Stopped INTP6 Key return In external expansion mode Operates when fXT is selected for sampling clock Stopped Operating AD0 to AD15 High impedance A16 to A21 LBEN, UBEN R/W DSTB, WRL, WRH, RD ASTB HLDAK User's Manual U13850EJ6V0UD 193 CHAPTER 6 CLOCK GENERATION FUNCTION 6.4.4 Software STOP mode (1) Settings and operating states This mode stops the entire system by stopping the main clock oscillator to stop supplying the internal main clock. The subclock oscillator continues operating and the on-chip subclock supply is continued. When the FRC bit in the processor clock control register (PCC) is set to 1, the subclock oscillator's on-chip feedback resistor is cut. This sets ultra low power consumption mode in which the only current is the device's leak current. In this mode, program execution is stopped and the contents of all registers and internal RAM are retained as they were just before software STOP mode was set. On-chip peripheral functions also stop operating (peripheral functions operating on the subclock are not stopped). External bus hold requests (HLDRQ) are not acknowledged. This mode can be set only when the main clock is being used as the CPU clock. This mode is set when the STP bit in the power save control register (PSC) has been set to 1. Do not set this mode when the subclock has been selected as the CPU clock. The operating statuses for software STOP mode are listed in Table 6-3. (2) Release of software STOP mode Software STOP mode can be released by an non-maskable interrupt, an unmasked interrupt request, or RESET input. When the STOP mode is released, the oscillation stabilization time is secured. Table 6-3. Operating Statuses in Software STOP Mode (1/2) STOP Mode Settings Item When Subclock Exists When Subclock Does Not Exist CPU Stopped ROM correction Stopped Clock generator Oscillation for main clock is stopped and oscillation for subclock continues Clock supply to CPU and on-chip peripheral functions is stopped 16-bit timer (TM0) Operates when INTWTNI is selected for count clock (fXT is selected as count clock for watch timer) 16-bit timer (TM1) Stopped 8-bit timer (TM2) Stopped Stopped 8-bit timer (TM3) Stopped 8-bit timer (TM4) Operates when fXT is selected for count clock Stopped 8-bit timer (TM5) Operates when fXT is selected for count clock Stopped (operation disabled) 8-bit timer (TM6) Operates when TO0 is selected as count clock (however, only when TM0 is operating) 8-bit timer (TM7) Operates when TO0 is selected as count clock (however, only when TM0 is operating) Watch timer Operates when fXT is selected for count clock Watchdog timer Serial interface Stopped CSI0 to CSI3 2 Note I C0 2 Note , I C1 Operates when an external clock is selected as the serial clock Stopped UART0, UART1 Operates when an external clock is selected as the baud-rate clock (transmit only) CSI4 Operates when an external clock is selected as the serial clock IEBus (V850/SB2 only) Stopped A/D converter Stopped 2 Note Available only in the Y versions (products with on-chip I C). 194 Stopped User's Manual U13850EJ6V0UD CHAPTER 6 CLOCK GENERATION FUNCTION Table 6-3. Operating Statuses in Software STOP Mode (2/2) Mode Settings When Subclock Exists When Subclock Does Not Exist Item DMA0 to DMA5 Stopped Real-time output Operates when INTTM4 or INTTM5 has been selected (when TM4 or TM5 is operating) Port function Held External bus interface Stopped External interrupt request NMI Operating INTP0 to INTP3 Operating INTP4 and INTP5 Stopped INTP6 Operates when fXT is selected for the noise eliminator Key return In external expansion mode Stopped Stopped Operating AD0 to AD15 High impedance A16 to A21 LBEN, UBEN R/W DSTB, WRL, WRH, RD ASTB HLDAK User's Manual U13850EJ6V0UD 195 CHAPTER 6 CLOCK GENERATION FUNCTION 6.5 Oscillation Stabilization Time The following shows the methods for specifying the length of the oscillation stabilization time required to stabilize the oscillator following release of STOP mode. (1) Release by non-maskable interrupt or by unmasked interrupt request STOP mode is released by a non-maskable interrupt or an unmasked interrupt request. When an interrupt is input, the counter (watchdog timer) starts counting and the count time is the length of time that must elapse for stabilization of the oscillator's clock output. The oscillation stabilization time is set by the oscillation stabilization time select register (OSTS). Oscillation stabilization time WDT count time After the specified amount of time has elapsed, system clock output starts and processing branches to the interrupt handler address. Figure 6-2. Oscillation Stabilization Time STOP mode is set Oscillation wave Main clock STOP status Interrupt input Oscillator is stopped Oscillation stabilization time count (2) Use of RESET pin to secure time (RESET pin input) For securing time with the RESET pin, refer to CHAPTER 15 RESET FUNCTION. 19 The oscillation stabilization time is 2 /fXX according to the value of the OSTS register after reset. 196 User's Manual U13850EJ6V0UD CHAPTER 6 6.6 CLOCK GENERATION FUNCTION Notes on Power Save Function (1) While an instruction is being executed on internal ROM To set the power save mode (IDLE mode or STOP mode) while an instruction is being executed on the internal ROM, insert a NOP instruction as a dummy instruction to correctly execute the routine after releasing the power save mode. The following shows the sequence of setting the power save mode. <1> Disable DMA operation. <2> Disable interrupts (set NP bit of PSW register to 1). <3> Write 8-bit data to the command register (PRCMD). <4> Write setting data to the power save control register (PSC) (using the following instructions). * Store instruction (ST/SST instruction) * Bit manipulation instruction (SET1/CLR1/NOT1 instruction) <5> Clear the interrupt disabled state (re-set the NP bit of the PSW register to 0). <6> Insert NOP instructions (2 or 5 instructions). <7> If DMA operation is necessary, enable DMA operation. Cautions 1. Insert two NOP instructions if the ID bit value of the PSW is not changed by the execution of the instruction that clears the NP bit to 0 (<5>), and insert five NOP instructions (<6>) if it is changed. The following shows a description example. [Description example] : When using PSC register LDSR rX.5 ; NP bit = 1 ST.B r0, PRCMD[r0] ; Write to PRCMD ST.B rD, RSC[r0] ; PSC register setting LDSR rY, 5 ; NP bit = 0 NOP ; Dummy instructions (2 or 5 instructions) : NOP (next instruction) ; Execution routine after releasing IDLE/STOP mode : Remark The above example assumes that rD (PSC set value), rX (value to be written to PSW), and rY (value rewritten to PSW) are already set. When saving the PSW value, transfer the PSW value before setting the NP bit to the rY register. 2. The instructions (<5> interrupt disable clear, <6> NOP instruction) following the store instruction (<4>) to the PSC register for setting the IDLE mode and STOP mode are executed before entering the power save mode. User's Manual U13850EJ6V0UD 197 CHAPTER 6 CLOCK GENERATION FUNCTION (2) While an instruction is being executed on external ROM If the V850/SB1 or V850/SB2 is used under the following conditions, the address indicated by the program counter (PC) differs from the address that actually reads an instruction after the power save mode has been released. Of the instructions 4 to 16 bytes after the instruction that writes data to the PSC register, the CPU may ignore 4 or 8 bytes of the instruction and execute wrong instructions. Caution A PC discrepancy occurs only when all the conditions (i) to (iii) in [Conditions] below are met. It does not occur if even one condition is not met. [Conditions] (i) If the power save mode (IDLE or STOP mode) is set while an instruction is being executed on the external ROM (ii) If the power save mode is released by an interrupt request (iii) If the subsequent instruction is executed while an interrupt request is being held pending after the power save mode has been released Conditions in which an interrupt request is held pending: * If the NP flag of the PSW register is "1" (during NMI servicing/set by software) * If the ID flag of the PSW register is "1" (during interrupt request servicing/DI instruction/set by software) * If the power save mode is released by an interrupt request with a priority the same as or lower than the interrupt request being serviced even though interrupts are enabled (EI status) Therefore, use the V850/SB1 and V850/SB2 under the following conditions: [Conditions] (i) Do not use a power save mode (IDLE or STOP mode) while an instruction is being executed on the external ROM (ii) Take the following measures using software if a power save mode is used while an instruction is being executed on the external ROM: * Insert six NOP instructions 4 bytes after the instruction that writes data to the PSC register. * Insert the BR $+2 instruction to eliminate the discrepancy in the address of the PC after the NOP instructions. 198 User's Manual U13850EJ6V0UD CHAPTER 6 CLOCK GENERATION FUNCTION [Example of prevention program] LDSR rx, 5 ; Sets value of rX to PSW. ST.B r0, PRCMD[r0] ; Writes data to PRCMD. ST.B rD, PSC[r0] ; Sets PSC register. LDSR rY, 5 ; Returns value of PSW. NOP ; Six NOP instructions or more NOP NOP NOP NOP BR $+2 ; Eliminates discrepancy of PC Remark It is assumed that the following values have already been set: rD: PSC set value, rX: Value written to PSW, rY: Value written back to PSW User's Manual U13850EJ6V0UD 199 CHAPTER 7 TIMER/COUNTER FUNCTION 7.1 16-Bit Timer (TM0, TM1) 7.1.1 Outline * 16-bit capture/compare registers: 2 (CRn0, CRn1) * Independent capture/trigger inputs: 2 (TIn0, TIn1) * Support of output of capture/match interrupt request signals (INTTMn0, INTTMn1) * Event input (shared with TIn0) via digital noise eliminator and support of edge specification * Timer output operated by match detection: 1 each (TOn) When using the P34/TO0 and P35/TO1 pins as TO0 and TO1 (timer outputs), set the value of port 3 (P3) to 0 (port mode output) and the port 3 mode register (PM3) to 0. The logical sum (ORed) value of the output of the port and the timer is output. Remark n = 0, 1 7.1.2 Function TM0 and TM1 have the following functions. * Interval timer * PPG output * Pulse width measurement * External event counter * Square wave output * One-shot pulse output Figure 7-1 shows the block diagram. 200 User's Manual U13850EJ6V0UD CHAPTER 7 TIMER/COUNTER FUNCTION Figure 7-1. Block Diagram of TM0 and TM1 Internal bus Capture/compare control register n (CRCn) CRCn2 CRCn1 CRCn0 Selector TIn1 Noise eliminator Selector INTTMn0 16-bit capture/compare register n0 (CRn0) Match Count clockNote Noise eliminator fXX/2 Output controller TOn Match 3 Noise eliminator TIn0 Clear 16-bit timer register (TMn) Selector 16-bit capture/compare register n1 (CRn1) INTTMn1 Selector CRCn2 PRMn2 Prescaler mode register n1 (PRMn1) PRMn1 PRMn0 TMCn3 TMCn2 TMCn1 Prescaler mode register n0 (PRMn0) OVFn OSPTn OSPEn TOCn4 LVSn 16-bit timer mode control register n (TMCn) LVRn TOCn1 TOEn Timer output control register n (TOCn) Internal bus Note The count clock is set by the PRMn0 and PRMn1 registers. Remark n = 0, 1 (1) Interval timer Generates an interrupt at predetermined time intervals. (2) PPG output Can output a square wave whose frequency and output-pulse width can be changed arbitrarily. (3) Pulse width measurement Can measure the pulse width of a signal input from an external source. (4) External event counter Can measure the number of pulses of a signal input from an external source. (5) Square wave output Can output a square wave of any frequency. (6) One-shot pulse output Can output a one-shot pulse with any output pulse width. User's Manual U13850EJ6V0UD 201 CHAPTER 7 TIMER/COUNTER FUNCTION 7.1.3 Configuration Timers 0 and 1 include the following hardware. Table 7-1. Configuration of Timers 0 and 1 Item Configuration Timer registers 16 bits x 2 (TM0, TM1) Registers 16-bit capture/compare registers: 16 bits x 2 each (CRn0, CRn1) Timer outputs 2 (TO0, TO1) Control registers 16-bit timer mode control registers 0, 1 (TMC0, TMC1) Capture/compare control registers 0, 1 (CRC0, CRC1) 16-bit timer output control registers 0, 1 (TOC0, TOC1) Prescaler mode registers n0, n1 (PRMn0, PRMn1) (1) 16-bit timer registers 0, 1 (TM0, TM1) TMn is a 16-bit read-only register that counts count pulses. The counter is incremented in synchronization with the rising edge of the input clock. If the count value is read during operation, input of the count clock is temporarily stopped, and the count value at that point is read. The count value is reset to 0000H in the following cases. <1> At RESET input <2> If TMCn3 and TMCn2 are cleared <3> If the valid edge of TIn0 is input in the clear & start mode entered by inputting the valid edge of TIn0 <4> If TMn and CRn0 match in the clear & start mode entered upon a match between TMn and CRn0 <5> If OSPTn is set or if the valid edge of TIn0 is input in the one-shot pulse output mode 202 User's Manual U13850EJ6V0UD CHAPTER 7 TIMER/COUNTER FUNCTION (2) 16-bit capture/compare registers n0 (CR00, CR10) CRn0 is a 16-bit register that functions as a capture register and as a compare register. Whether this register functions as a capture or compare register is specified by using the CRCn0 bit of the CRCn register. (a) When using CRn0 as compare register The value set to CRn0 is always compared with the count value of the TMn register. When the values of the two match, an interrupt request (INTTMn0) is generated. When TMn is used as an interval timer, CRn0 can also be used as a register that holds the interval time. (b) When using CRn0 as capture register The valid edge of the TIn0 or TIn1 pin can be selected as a capture trigger. The valid edge of TIn0 or TIn1 is set by using the PRMn0 register. When the valid edge of the TIn0 pin is specified as the capture trigger, refer to Table 7-2. When the valid edge of the TIn1 pin is specified as the capture trigger, refer to Table 7-3. Table 7-2. Valid Edge of TIn0 Pin and Capture Trigger of CRn0 ESn01 ESn00 Valid Edge of TIn0 Pin CRn0 Capture Trigger 0 0 Falling edge Rising edge 0 1 Rising edge Falling edge 1 0 Setting prohibited Setting prohibited 1 1 Both rising and falling edges No capture operation Remark n = 0, 1 Table 7-3. Valid Edge of TIn1 Pin and Capture Trigger of CRn0 ESn11 ESn10 Valid Edge of TIn1 Pin CRn0 Capture Trigger 0 0 Falling edge Falling edge 0 1 Rising edge Rising edge 1 0 Setting prohibited Setting prohibited 1 1 Both rising and falling edges Both rising and falling edges Remark n = 0, 1 CRn0 is set by using a 16-bit memory manipulation instruction. These registers can only be read by a 16-bit memory manipulation instruction when used as capture registers. RESET input clears CRn0 to 0000H. Caution Set CRn0 to a value other than 0000H in the clear & start mode entered upon a match between TMn and CRn0. In the free-running mode or the clear & start mode entered upon the TIn0 valid edge, however, an interrupt request (INTTMn0) is generated after an overflow (FFFFH) when CRn0 is set to 0000H. User's Manual U13850EJ6V0UD 203 CHAPTER 7 TIMER/COUNTER FUNCTION (3) 16-bit capture/compare register n1 (CR01, CR11) This is a 16-bit register that can be used as a capture register and a compare register. Whether it is used as a capture register or compare register is specified by the CRCn2 bit of the CRCn register. (a) When using CRn1 as compare register The value set to CRn1 is always compared with the count value of TMn. When the values of the two match, an interrupt request (INTTMn1) is generated. (b) When using CRn1 as capture register The valid edge of the TIn1 pin can be selected as a capture trigger. The valid edge of TIn1 is specified by the PRMn0 register. When the capture trigger is specified as the valid edge of TIn0, the relationship between the TIn0 valid edge and the CRn1 capture trigger is as follows. Table 7-4. TIn0 Pin Valid Edge and CRn1 Capture Trigger Remark ESn01 ESn00 TIn0 Pin Valid Edge CRn1 Capture Trigger 0 0 Falling edge Falling edge 0 1 Rising Edge Rising Edge 1 0 Setting prohibited Setting prohibited 1 1 Both rising and falling edges Both rising and falling edges n = 0, 1 CRn1 is set by using a 16-bit memory manipulation instruction. These registers can only be read by a 16-bit memory manipulation instruction when used as capture registers. RESET input clears CRn1 to 0000H. Caution Set CRn1 to a value other than 0000H in the clear & start mode entered upon a match between TMn and CRn0. In the free-running mode or the clear & start mode entered upon the TIn0 valid edge, however, an interrupt request (INTTMn1) is generated after an overflow (FFFFH) when CRn1 is set to 0000H. 204 User's Manual U13850EJ6V0UD CHAPTER 7 TIMER/COUNTER FUNCTION 7.1.4 Timer 0, 1 control registers The registers to control timers 0 and 1 are shown below. * 16-bit timer mode control register n (TMCn) * Capture/compare control register n (CRCn) * 16-bit timer output control register n (TOCn) * Prescaler mode registers n0, n1 (PRMn0, PRMn1) The following registers are also used. * 16-bit timer register n (TMn) * 16-bit capture/compare registers n0, n1 (CRn0, CRn1) (1) 16-bit timer mode control registers 0, 1 (TMC0, TMC1) TMCn specifies the operation mode of the 16-bit timer, and the clear mode, output timing, and overflow detection of 16-bit timer register n (TMn). TMCn is set by an 8-bit or 1-bit memory manipulation instruction. RESET input clears TMC0 and TMC1 to 00H. Caution 16-bit timer register n starts operating when the TMCn2 and TMCn3 bits are set to values other than 0, 0 (operation stop mode). To stop the operation, set the TMCn2 and TMCn3 bits to 0, 0. User's Manual U13850EJ6V0UD 205 CHAPTER 7 After reset: 00H TMCn R/W TIMER/COUNTER FUNCTION Address: FFFFF208H, FFFFF218H 7 6 5 4 3 2 1 <0> 0 0 0 0 TMCn3 TMCn2 TMCn1 OVFn TMCn3 TMCn2 TMCn1 0 0 0 0 0 1 0 1 0 0 1 1 1 0 0 1 0 1 1 1 0 1 1 1 (n = 0, 1) Operation mode and clear mode selector TOn output timing selector Generation of interrupt Operation stops (TMn is cleared to 0) Not affected Not generated Free-running mode Match between TMn and CRn0 or match between TMn and CRn1 Generated on match between TMn and CRn0 and match between TMn and CRn1 Match between TMn and CRn0, match between TMn and CRn1, or valid edge of TIn0 Clears and starts at valid edge of TIn0 Match between TMn and CRn0 or match between TMn and CRn1 Match between TMn and CRn0, match between TMn and CRn1, or valid edge of TIn0 Clears and starts on match between TMn and CRn0 OVFn Match between TMn and CRn0 or match between TMn and CRn1 Match between TMn and CRn0, match between TMn and CRn1, or valid edge of TIn0 Detection of overflow of 16-bit timer register n 0 Did not overflow 1 Overflowed Cautions 1. When a bit other than the OVFn bit is written, be sure to stop the timer operation. 2. The valid edge of the TIn0 pin is set by using prescaler mode register n0 (PRMn0). 3. When a mode in which the timer is cleared and started on a match between TMn and CRn0 is selected, the OVFn bit is set to 1 when the count value of TMn changes from FFFFH to 0000H with CRn0 set to FFFFH. 4. Be sure to set bits 4 to 7 to 0. Remark TOn: Output pin of timer n TIn0: Input pin of timer n TMn: 16-bit timer register n CRn0: Compare register n0 CRn1: Compare register n1 206 User's Manual U13850EJ6V0UD CHAPTER 7 TIMER/COUNTER FUNCTION (2) Capture/compare control registers 0, 1 (CRC0, CRC1) CRCn controls the operation of 16-bit capture/compare register n (CRn0 and CRn1). CRCn is set by an 8-bit or 1-bit memory manipulation instruction. RESET input clears CRC0 and CRC1 to 00H. After reset: 00H R/W CRCn Address: FFFFF20AH, FFFFF21AH 7 6 5 4 3 2 1 0 0 0 0 0 0 CRCn2 CRCn1 CRCn0 (n = 0, 1) CRCn2 Selection of operation mode of CRn1 0 Operates as compare register 1 Operates as capture register CRCn1 Selection of capture trigger of CRn0 0 Captured at valid edge of TIn1 1 Captured in reverse phase of valid edge of TIn0 CRCn0 Selection of operation mode of CRn0 0 Operates as compare register 1 Operates as capture register Cautions 1. Before setting CRCn, be sure to stop the timer operation. 2. When the mode in which the timer is cleared and started on a match between TMn and CRn0 is selected by 16-bit timer mode control register n (TMCn), do not specify CRn0 as a capture register. 3. When both the rising edge and falling edge are specified for the TIn0 valid edge, the capture operation does not work for the CRn0 register. 4. For the capture trigger, a pulse longer than twice the count clock selected by prescaler mode registers 0n, 1n (PRM0n, PRM1n) is required in order that the signals from TIn0 and T2n1 perform the capture operation correctly. 5. Be sure to set bits 3 to 7 to 0. User's Manual U13850EJ6V0UD 207 CHAPTER 7 TIMER/COUNTER FUNCTION (3) 16-bit timer output control registers 0, 1 (TOC0, TOC1) TOCn controls the operation of the timer n output controller by setting or resetting the R-S flip-flop (LV0), enabling or disabling reverse output, enabling or disabling output of timer n, enabling or disabling one-shot pulse output operation, and selecting the output trigger for the one-shot pulse by software. TOCn is set by an 8-bit or 1-bit memory manipulation instruction. RESET input clears TOC0 and TOC1 to 00H. After reset: 00H R/W TOCn Address: FFFFF20CH, FFFFF21CH 7 <6> <5> 4 <3> <2> 1 <0> 0 OSPTn OSPEn TOCn4 LVSn LVRn TOCn1 TOEn (n = 0, 1) OSPTn Control of output trigger of one-shot pulse by software 0 No one-shot pulse trigger 1 Uses one-shot pulse trigger OSPEn Control of one-shot pulse output operation 0 Successive pulse output 1 One-shot pulse outputNote TOCn4 Control of timer output F/F on match between CRn1 and TMn 0 Reverse timer output F/F disabled 1 Reverse timer output F/F disabled LVSn LVRn 0 0 Not affected 0 1 Resets timer output F/F (0) 1 0 Sets timer output F/F (1) 1 1 Setting prohibited TOCn1 Setting of status of timer output F/F of timer n Control of timer output F/F on match between CRn0 and TMn or TIn0 valid edge 0 Reverse timer output F/F disabled 1 Reverse timer output F/F enabled TOEn Controls output of timer n 0 Output disabled (output is fixed to 0 level) 1 Output enabled Note The one-shot pulse output operates only in the free-running mode and in the clear & start mode set by the TIn0 valid edge. Cautions 1. Before setting TOCn, be sure to stop the timer operation. 2. LVSn and LVRn are 0 when read after data has been set to them. 3. OSPTn is 0 when read because it is automatically cleared after data has been set. 4. Do not set OSPTn (to 1) other than for one-shot pulse output (OSPEn bit = 0). 208 User's Manual U13850EJ6V0UD CHAPTER 7 TIMER/COUNTER FUNCTION (4) Prescaler mode registers 00, 01 (PRM00, PRM01) PRM0n selects the count clock of the 16-bit timer (TM0) and the valid edge of TI0n input. PRM00 and PRM01 are set by an 8-bit memory manipulation instruction. RESET input clears PRM00 and PRM01 to 00H. After reset: 00H R/W PRM00 Address: FFFFF206H 7 6 5 4 3 2 1 0 ES011 ES010 ES001 ES000 0 0 PRM01 PRM00 After reset: 00H R/W PRM01 Address: FFFFF20EH 7 6 5 4 3 2 1 0 0 0 0 0 0 0 0 PRM02 ES011 ES010 0 0 Falling edge 0 1 Rising edge 1 0 Setting prohibited 1 1 Both rising and falling edges ES001 ES000 0 0 Falling edge 0 1 Rising edge 1 0 Setting prohibited 1 1 Both rising and falling edges PRM02 PRM01 Selection of valid edge of TI01 Selection of valid edge of TI00 PRM00 Count clock selection fXX Count clock 20 MHz Note 2 12.58 MHz 0 0 0 fXX/2 100 ns 158 ns 0 0 1 fXX/16 800 ns 1.3 s 0 1 0 INTWTNI - - 0 1 1 TI00 valid edge - - 1 0 0 fXX/4 200 ns 318 ns 1 0 1 fXX/64 3.2 s 5.1 s 1 1 0 fXX/256 12.8 s 20.3 s 1 1 1 Setting prohibited - - Note 1 Notes 1. The external clock requires a pulse longer than twice that of the internal clock (fXX/2). 2. Only in the V850/SB1. Cautions 1. When selecting the valid edge of TI00 as the count clock, do not specify the clear & start mode entered on the valid edge of TI00 or TI00 as a capture trigger. 2. Before setting data to PRM0n, always stop the timer operation. 3. If the 16-bit timer (TM0) operation is enabled by specifying the rising edge or both edges as the valid edge of the TI0n pin while the TI0n pin is high level immediately after system reset, the rising edge is detected immediately after the rising edge or both edges is specified. Be careful when pulling up the TI0n pin. However, the rising edge is not detected when operation is enabled after it has been stopped. User's Manual U13850EJ6V0UD 209 CHAPTER 7 TIMER/COUNTER FUNCTION (5) Prescaler mode registers 10, 11 (PRM10, PRM11) PRM1n selects the count clock of the 16-bit timer (TM1) and the valid edge of TI1n input. PRM10 and PRM11 are set by an 8-bit memory manipulation instruction. RESET input clears PRM10 and PRM11 to 00H. After reset: 00H R/W PRM10 Address: FFFFF216H 7 6 5 4 3 2 1 0 ES111 ES110 ES101 ES100 0 0 PRM11 PRM10 After reset: 00H R/W PRM11 Address: FFFFF21EH 7 6 5 4 3 2 1 0 0 0 0 0 0 0 0 PRM12 ES111 ES110 0 0 Falling edge 0 1 Rising edge 1 0 Setting prohibited 1 1 Both rising and falling edges ES101 ES100 0 0 Falling edge 0 1 Rising edge 1 0 Setting prohibited 1 1 Both rising and falling edges PRM12 PRM11 Selection of valid edge of TI11 Selection of valid edge of TI10 PRM10 Count clock selection fXX Count clock 20 MHz Note 2 12.58 MHz 0 0 0 fXX/2 100 ns 158 ns 0 0 1 fXX/4 200 ns 318 ns 0 1 0 fXX/16 800 ns 1.3 s - Note 1 - 0 1 1 TI10 valid edge 1 0 0 fXX/32 1.6 s 2.5 s 1 0 1 fXX/128 6.4 s 10.2 s 1 1 0 fXX/256 12.8 s 20.3 s 1 1 1 Setting prohibited - - Notes 1. The external clock requires a pulse longer than twice that of the internal clock (fXX/2). 2. Only in the V850/SB1. Cautions 1. When selecting the valid edge of TI10 as the count clock, do not specify the clear & start mode entered on the valid edge of TI10 or TI10 as a capture trigger. 2. Before setting data to PRM1n, always stop the timer operation. 3. If the 16-bit timer (TM1) operation is enabled by specifying the rising edge or both edges as the valid edge of the TI1n pin while the TI1n pin is high level immediately after system reset, the rising edge is detected immediately after the rising edge or both edges is specified. Be careful when pulling up the TI1n pin. However, the rising edge is not detected when operation is enabled after it has been stopped. 210 User's Manual U13850EJ6V0UD CHAPTER 7 TIMER/COUNTER FUNCTION 7.2 16-Bit Timer Operation 7.2.1 Operation as interval timer (16 bits) TMn operates as an interval timer when 16-bit timer mode control register n (TMCn) and capture/compare control register n (CRCn) are set as shown in Figure 7-2 (n = 0, 1). In this case, TMn repeatedly generates an interrupt at the time interval specified by the count value set in advance to 16-bit capture/compare register n0 (CRn0). When the count value of TMn matches with the set value of CRn0, the value of TMn is cleared to 0, and the timer continues counting. At the same time, an interrupt request signal (INTTMn0) is generated. The count clock of the 16-bit timer/event counter can be selected by the PRMn0 and PRMn1 bits of prescaler mode register n0 (PRMn0) and by the PRMn2 bit of prescaler mode register n1 (PRMn1). Figure 7-2. Control Register Settings When TMn Operates as Interval Timer (a) 16-bit timer mode control registers 0, 1 (TMC0, TMC1) TMCn 0 0 0 0 TMCn3 TMCn2 TMCn1 OVFn 1 1 0/1 0 Clears and starts on match between TMn and CRn0. (b) Capture/compare control registers 0, 1 (CRC0, CRC1) CRCn 0 0 0 0 0 CRCn2 CRCn1 CRCn0 0/1 0/1 0 CRn0 used as compare register Remark 0/1: When these bits are reset to 0 or set to 1, other functions can be used along with the interval timer function. For details, refer to 7.1.4 (1) 16-bit timer mode control registers 0, 1 (TMC0, TMC1) and 7.1.4 (2) Capture/compare control registers 0, 1 (CRC0, CRC1). User's Manual U13850EJ6V0UD 211 CHAPTER 7 TIMER/COUNTER FUNCTION Figure 7-3. Configuration of Interval Timer 16-bit capture/compare register n0 (CRn0) INTTMn0 Count clockNote Selector 16-bit timer register n (TMn) OVFn Noise eliminator TIn0 Clear circuit fXX/2 Note The count clock is set by the PRMn0 and PRMn1 registers. Remarks 1. " " indicates a signal that can be directly connected to a port. 2. n = 0, 1 Figure 7-4. Timing of Interval Timer Operation t Count clock TMn count value 0000H N 0001H Count start CRn0 0000H 0001H Clear N N 0000H 0001H Clear N N INTTMn0 Interrupt acknowledgment Interrupt acknowledgment TOn Interval time Interval time Remarks 1. Interval time = (N + 1) x t: N = 0001H to FFFFH 2. n = 0,1 212 N User's Manual U13850EJ6V0UD Interval time N CHAPTER 7 TIMER/COUNTER FUNCTION 7.2.2 PPG output operation TMn can be used for PPG (Programmable Pulse Generator) output by setting 16-bit timer mode control register n (TMCn) and capture/compare control register n (CRCn) as shown in Figure 7-5. The PPG output function outputs a square wave from the TOn pin with a cycle specified by the count value set in advance to 16-bit capture/compare register n0 (CRn0) and a pulse width specified by the count value set in advance to 16-bit capture/compare register n1 (CRn1). Figure 7-5. Control Register Settings in PPG Output Operation (a) 16-bit timer mode control registers 0, 1 (TMC0, TMC1) TMCn 0 0 0 0 TMCn3 TMCn2 TMCn1 OVFn 1 1 0 0 Clears and starts on match between TMn and CRn0. (b) Capture/compare control registers 0, 1 (CRC0, CRC1) CRCn 0 0 0 0 0 CRCn2 CRCn1 CRCn0 0 x 0 x: don't care CRn0 used as compare register CRn1 used as compare register (c) 16-bit timer output control registers 0, 1 (TOC0, TOC1) TOCn 0 OSPTn OSPEn TOCn4 LVSn LVRn TOCn1 TOEn 0 0 1 0/1 0/1 1 1 Enables TOn output. Reverses output on match between TMn and CRn0. Specifies initial value of TOn output F/F. Reverses output on match between TMn and CRn1. Disables one-shot pulse output. Cautions 1. Make sure that CRn0 and CRn1 are set to 0000H < CRn1 < CRn0 FFFFH. 2. PPG output sets the pulse cycle to (CRn0 set value + 1). The duty factor is (CRn1 set value + 1)/(CRn0 set value + 1). User's Manual U13850EJ6V0UD 213 CHAPTER 7 TIMER/COUNTER FUNCTION Figure 7-6. Configuration of PPG Output Selector 16-bit capture/compare register n0 (CRn0) Clear circuit 16-bit timer register n (TMn) Output controller Count clockNote Noise eliminator TIn0 fxx/2 16-bit capture/compare register n1 (CRn1) Note The count clock is set by the PRMn0 and PRMn1 registers. Remarks 1. " " indicates a signal that can be directly connected to a port. 2. n = 0, 1 Figure 7-7. PPG Output Operation Timing t Count clock TMn count value 0000H 0001H M-1 M Count starts N 0000H 0001H Clear Value loaded to CRn0 N Value loaded to CRn1 M TOn Pulse width: (M + 1) x t 1 cycle: (N + 1) x t Remarks 1. 0000H M < N FFFFH 2. n = 0, 1 214 N-1 User's Manual U13850EJ6V0UD TOn CHAPTER 7 TIMER/COUNTER FUNCTION 7.2.3 Pulse width measurement 16-bit timer register n (TMn) can be used to measure the pulse widths of the signals input to the TIn0 and TIn1 pins. Measurement can be carried out with TMn used as a free-running counter or by restarting the timer in synchronization with the edge of the signal input to the TIn0 pin. (1) Pulse width measurement with free-running counter and one capture register If the edge specified by prescaler mode register n0 (PRMn0) is input to the TIn0 pin when 16-bit timer register n (TMn) is used as a free-running counter (refer to Figure 7-8), the value of TMn is loaded to 16-bit capture/compare register n1 (CRn1), and an external interrupt request signal (INTTMn1) is set. The edge is specified by using bits 6 and 7 (ESn10 and ESn11) of prescaler mode register n0 (PRMn0). The rising edge, falling edge, or both the rising and falling edges can be selected. The valid edge is detected by sampling at the count clock cycle selected by prescaler mode register n0, n1 (PRMn0, PRMn1), and a capture operation is not performed until the valid level is detected two times. Therefore, noise with a short pulse width can be eliminated. Figure 7-8. Control Register Settings for Pulse Width Measurement with Free-Running Counter and One Capture Register (a) 16-bit timer mode control registers 0, 1 (TMC0, TMC1) TMCn 0 0 0 0 TMCn3 TMCn2 TMCn1 OVFn 0 1 0/1 0 Free-running mode (b) Capture/compare control registers 0, 1 (CRC0, CRC1) CRCn 0 0 0 0 0 CRCn2 CRCn1 CRCn0 1 0/1 0 CRn0 used as compare register CRn1 used as capture register Remark 0/1: When these bits are reset to 0 or set to 1, other functions can be used along with the pulse width measurement function. For details, refer to 7.1.4 (1) 16-bit timer mode control registers 0, 1 (TMC0, TMC1) and 7.1.4 (2) Capture/compare control registers 0, 1 (CRC0, CRC1). User's Manual U13850EJ6V0UD 215 CHAPTER 7 TIMER/COUNTER FUNCTION Figure 7-9. Configuration for Pulse Width Measurement with Free-Running Counter Count clockNote Selector 16-bit timer register n (TMn) OVFn 16-bit capture/compare register n1 (CRn1) TIn0 INTTMn1 Internal bus Note The count clock is set by the PRMn0 and PRMn1 registers. Remarks 1. " " indicates a signal that can be directly connected to a port. 2. n = 0, 1 Figure 7-10. Timing of Pulse Width Measurement with Free-Running Counter and One Capture Register (with Both Edges Specified) t Count clock TMn count value 0000H 0001H D0 D0 + 1 D1 D1 + 1 FFFFH 0000H D2 D3 TIn0 pin input Value loaded to CRn1 D0 D1 D2 INTTMn1 OVFn (D1 - D0) x t Remark 216 (10000H - D1 + D2) x t n = 0, 1 User's Manual U13850EJ6V0UD (D3 - D2) x t D3 CHAPTER 7 TIMER/COUNTER FUNCTION (2) Measurement of two pulse widths with free-running counter The pulse widths of the two signals respectively input to the TIn0 and TIn1 pins can be measured when 16-bit timer register n (TMn) is used as a free-running counter (refer to Figure 7-11). When the edge specified by the ESn00 and ESn01 bits of prescaler mode register n0 (PRMn0) is input to the TIn0 pin, the value of the TMn is loaded to 16-bit capture/compare register n1 (CRn1) and an external interrupt request signal (INTTMn1) is set. When the edge specified by the ESn10 and ESn11 bits in PRMn0 is input to the TIn1 pin, the value of TMn is loaded to 16-bit capture/compare register n0 (CRn0), and an external interrupt request signal (INTTMn0) is set. The edges of the TIn0 and TIn1 pins are specified by the ESn00 and ESn01 bits and the ESn10 and ESn11 bits of PRMn0, respectively. The rising, falling, or both rising and falling edges can be specified. The valid edge is detected by sampling at the count clock cycle selected by prescaler mode register n0, n1 (PRMn0, PRMn1), and a capture operation is not performed until the valid level is detected two times. Therefore, noise with a short pulse width can be eliminated. Figure 7-11. Control Register Settings for Measurement of Two Pulse Widths with Free-Running Counter (a) 16-bit timer mode control registers 0, 1 (TMC0, TMC1) TMCn 0 0 0 0 TMCn3 TMCn2 TMCn1 OVFn 0 1 0/1 0 Free-running mode (b) Capture/compare control registers 0, 1 (CRC0, CRC1) CRCn 0 0 0 0 0 CRCn2 CRCn1 CRCn0 1 0 1 CRn0 used as capture register Captures valid edge of TIn1 pin to CRn0. CRn1 used as capture register Remark 0/1: When these bits are reset to 0 or set to 1, other functions can be used along with the pulse width measurement function. For details, refer to 7.1.4 (1) 16-bit timer mode control registers 0, 1 (TMC0, TMC1) and 7.1.4 (2) Capture/compare control registers 0, 1 (CRC0, CRC1). User's Manual U13850EJ6V0UD 217 CHAPTER 7 TIMER/COUNTER FUNCTION * Capture operation (free-running mode) The following figure illustrates the operation of the capture register when the capture trigger is input. Figure 7-12. CRn1 Capture Operation with Rising Edge Specified Count clock TMn N-3 N-2 N-1 N N+1 TIn0 Rising edge detection CRn1 N INTTMn1 Remark n = 0, 1 Figure 7-13. Timing of Pulse Width Measurement with Free-Running Counter (with Both Edges Specified) t Count clock TMn count value 0000H 0001H D0 D0 + 1 D1 D1 + 1 FFFFH 0000H D2 D2 + 1 D2 + 2 TIn0 pin input Value loaded to CRn1 D0 D1 D2 INTTMn1 TIn1 pin input Value loaded to CRn0 D1 D2 + 1 INTTMn0 OVFn (D1 - D0) x t (10000H - D1 + D2) x t (10000H - D1 + (D2 + 1) x t Remark n = 0, 1 218 User's Manual U13850EJ6V0UD (D3 - D2) x t D3 CHAPTER 7 TIMER/COUNTER FUNCTION (3) Pulse width measurement with free-running counter and two capture registers When 16-bit timer register n (TMn) is used as a free-running counter (refer to Figure 7-14), the pulse width of the signal input to the TIn0 pin can be measured. When the edge specified by the ESn00 and ESn01 bits of prescaler mode register n0 (PRMn0) is input to the TIn0 pin, the value of TMn is loaded to 16-bit capture/compare register n1 (CRn1), and an external interrupt request signal (INTTMn1) is set. The value of TMn is also loaded to 16-bit capture/compare register n0 (CRn0) when an edge reverse to the one that triggers capturing to CRn1 is input. The edge of the TIn0 pin is specified by the ESn00 and ESn01 bits of prescaler mode register n (PRMn0). The rising or falling edge can be specified. The valid edge of TIn0 is detected by sampling at the count clock cycle selected by prescaler mode register n0, n1 (PRMn0, PRMn1), and a capture operation is not performed until the valid level is detected two times. Therefore, noise with a short pulse width can be eliminated. Caution If the valid edge of the TIn0 pin is specified to be both the rising and falling edges, capture/compare register n0 (CRn0) cannot perform its capture operation. Figure 7-14. Control Register Settings for Pulse Width Measurement with Free-Running Counter and Two Capture Registers (a) 16-bit timer mode control registers 0, 1 (TMC0, TMC1) TMCn 0 0 0 0 TMCn3 TMCn2 TMCn1 OVFn 0 1 0/1 0 Free-running mode (b) Capture/compare control registers 0, 1 (CRC0, CRC1) CRCn 0 0 0 0 0 CRCn2 CRCn1 CRCn0 1 1 1 CRn0 used as capture register Captures to CRn0 at edge reverse to valid edge of TIn0 pin. CRn1 used as capture register Remark 0/1: When these bits are reset to 0 or set to 1, other functions can be used along with the pulse width measurement function. For details, refer to 7.1.4 (1) 16-bit timer mode control registers 0, 1 (TMC0, TMC1) and 7.1.4 (2) Capture/compare control registers 0, 1 (CRC0, CRC1). User's Manual U13850EJ6V0UD 219 CHAPTER 7 TIMER/COUNTER FUNCTION Figure 7-15. Timing of Pulse Width Measurement with Free-Running Counter and Two Capture Registers (with Rising Edge Specified) t Count clock TMn count value 0000H 0001H D0 D0 + 1 D1 D1 + 1 FFFFH 0000H D2 D2 + 1 D3 TIn0 pin input Value loaded to CRn1 D0 Value loaded to CRn0 D2 D1 D3 INTTMn1 OVFn (D1 - D0) x t (10000H - D1 + D2) x t (D3 - D2) x t Remark n = 0, 1 (4) Pulse width measurement by restarting When the valid edge of the TIn0 pin is detected, the pulse width of the signal input to the TIn0 pin can be measured by clearing 16-bit timer register n (TMn) once and then resuming counting after loading the count value of TMn to 16-bit capture/compare register n1 (CRn1). (See Figure 7-17) The edge is specified by the ESn00 and ESn01 bits of prescaler mode register n0 (PRMn0). The rising or falling edge can be specified. The valid edge is detected by sampling at the count clock cycle selected by prescaler mode register n0, n1 (PRMn0, PRMn1) and a capture operation is not performed until the valid level is detected two times. Therefore, noise with a short pulse width can be eliminated. Caution If the valid edge of the TIn0 pin is specified to be both the rising and falling edges, 16-bit capture/compare register n0 (CRn0) cannot perform its capture operation. 220 User's Manual U13850EJ6V0UD CHAPTER 7 TIMER/COUNTER FUNCTION Figure 7-16. Control Register Settings for Pulse Width Measurement by Restarting (a) 16-bit timer mode control registers 0, 1 (TMC0, TMC1) TMCn 0 0 0 TMCn3 TMCn2 TMCn1 OVFn 1 0 0/1 0 0 Clears and starts at valid edge of TIn0 pin. (b) Capture/compare control registers 0, 1 (CRC0, CRC1) CRCn 0 0 0 0 CRCn2 CRCn1 CRCn0 1 1 1 0 CRn0 used as capture register Captures to CRn0 at edge reverse to valid edge of TIn0. CRn1 used as capture register Remark 0/1: When these bits are reset to 0 or set to 1, other functions can be used along with the pulse width measurement function. For details, refer to 7.1.4 (1) 16-bit timer mode control registers 0, 1 (TMC0, TMC1) and 7.1.4 (2) Capture/compare control registers 0, 1 (CRC0, CRC1). Figure 7-17. Timing of Pulse Width Measurement by Restarting (with Rising Edge Specified) t Count clock TMn count value 0000H 0001H D0 0000H 0001H D1 D2 0000H 0001H TI0n0 pin input Value loaded to CRn1 D0 D2 D1 Value loaded to CRn0 INTTM0n1 (D1 + 1) x t (D2 + 1) x t Remark n = 0, 1 User's Manual U13850EJ6V0UD 221 CHAPTER 7 TIMER/COUNTER FUNCTION 7.2.4 Operation as external event counter TMn can be used as an external event counter that counts the number of clock pulses input to the TIn0 pin from an external source by using 16-bit timer register n (TMn). Each time the valid edge specified by prescaler mode register n0 (PRMn0) has been input, TMn is incremented. When the count value of TMn matches with the value of 16-bit capture/compare register n0 (CRn0), TMn is cleared to 0, and an interrupt request signal (INTTMn0) is generated. The edge is specified by ESn00 and ESn01 bits of prescaler mode register n0 (PRMn0). The rising, falling, or both the rising and falling edges can be specified. The valid edge is detected through sampling at a count clock cycle of fXX/2, and the capture operation is not performed until the valid level is detected two times. Therefore, noise with a short pulse width can be removed. Figure 7-18. Control Register Settings in External Event Counter Mode (a) 16-bit timer mode control registers 0, 1 (TMC0, TMC1) TMCn 0 0 0 0 TMCn3 TMCn2 TMCn1 OVFn 1 1 0/1 0 Clears and starts on match between TMn and CRn0. (b) Capture/compare control registers 0, 1 (CRC0, CRC1) CRCn 0 0 0 0 0 CRCn2 CRCn1 CRCn0 0/1 0/1 0 CRn0 as compare register Remark 0/1: When these bits are reset to 0 or set to 1, other functions can be used along with the external event counter function. For details, refer to 7.1.4 (1) 16-bit timer mode control registers 0, 1 (TMC0, TMC1) and 7.1.4 (2) Capture/compare control registers 0, 1 (CRC0, CRC1). 222 User's Manual U13850EJ6V0UD CHAPTER 7 TIMER/COUNTER FUNCTION Figure 7-19. Configuration of External Event Counter 16-bit capture/compare register n (CRn0) Match INTTMn0 Clear Count clockNote Selector fXX/2 16-bit timer/counter n (TMn) OVFn Noise eliminator 16-bit capture/compare register n1 (CRn1) Valid edge of TIn0 Internal bus Note The count clock is set by the PRMn0 and PRMn1 registers. Remarks 1. " " indicates a signal that can be directly connected to a port. 2. n = 0, 1 Figure 7-20. Timing of External Event Counter Operation (with Rising Edge Specified) TIn0 pin input TMn count value 0000H 0001H 0002H 0003H 0004H 0005H CRn0 N-1 N 0000H 0001H 0002H 0003H N INTTMn0 Caution Read TMn when reading the count value of the external event counter. Remark n = 0, 1 7.2.5 Operation to output square wave TMn can be used to output a square wave with any frequency at the interval specified by the count value set in advance to 16-bit capture/compare register n0 (CRn0). By setting the TOEn and TOCn1 bits of 16-bit timer output control register n (TOCn) to 1, the output status of the TOn pin is reversed at the interval specified by the count value set in advance to CRn1. In this way, a square wave of any frequency can be output. User's Manual U13850EJ6V0UD 223 CHAPTER 7 TIMER/COUNTER FUNCTION Figure 7-21. Control Register Settings in Square Wave Output Mode (a) 16-bit timer mode control registers 0, 1 (TMC0, TMC1) TMCn 0 0 0 0 TMCn3 TMCn2 TMCn1 OVFn 1 1 0 0 Clears and starts on match between TMn and CRn0. (b) Capture/compare control registers 0, 1 (CRC0, CRC1) CRCn 0 0 0 0 0 CRCn2 CRCn1 CRCn0 0/1 0/1 1 CRn0 used as compare register (c) 16-bit timer output control registers 0, 1 (TOC0, TOC1) TOCn 0 OSPTn OSPEn TOCn4 LVSn LVRn TOCn1 TOEn 0 0 0 0/1 0/1 1 1 Enables TOn output. Reverses output on match between TMn and CRn0. Specifies initial value of TOn output F/F. Does not reverse output on match between TMn and CRn1. Disables one-shot pulse output. Remark 0/1: When these bits are reset to 0 or set to 1, other functions can be used along with the square wave output function. For details, refer to 7.1.4 (1) 16-bit timer mode control registers 0, 1 (TMC0, TMC1), 7.1.4 (2) Capture/compare control registers 0, 1 (CRC0, CRC1), and 7.1.4 (3) 16-bit timer output control registers 0, 1 (TOC0, TOC1). 224 User's Manual U13850EJ6V0UD CHAPTER 7 TIMER/COUNTER FUNCTION Figure 7-22. Timing of Square Wave Output Operation Count clock TMn count value CRn0 N-1 0000H 0001H 0002H N 0000H 0001H 0002H N-1 N 0000H N INTTMn0 TOn pin output Remark n = 0, 1 7.2.6 Operation to output one-shot pulse TMn can output a one-shot pulse in synchronization with a software trigger and an external trigger (TIn0 pin input). (1) One-shot pulse output with software trigger A one-shot pulse can be output from the TOn pin by setting 16-bit timer mode control register n (TMCn), capture/compare control register n (CRCn), and 16-bit timer output control register n (TOCn) as shown in Figure 7-23, and by setting the OSPTn bit of TOCn by software. By setting OSPTn to 1, the 16-bit timer/event counter is cleared and started, and its output is asserted at the count value (N) set in advance to 16-bit capture/compare register n1 (CRn1). After that, the output is deasserted at the count value (M) set in advance to 16-bit capture/compare register n0 (CRn0) Note . Even after the one-shot pulse has been output, TMn continues its operation. To stop TMn, TMCn must be reset to 00H. Note This is an example when N < M. When N > M, the output is asserted by CRn0 and deasserted by CRn1. Caution Do not set OSPTn to 1 while the one-shot pulse is being output. To output the one-shot pulse again, wait until the current one-shot pulse output is complete. User's Manual U13850EJ6V0UD 225 CHAPTER 7 TIMER/COUNTER FUNCTION Figure 7-23. Control Register Settings for One-Shot Pulse Output with Software Trigger (a) 16-bit timer mode control registers 0, 1 (TMC0, TMC1) TMCn 0 0 0 0 TMCn3 TMCn2 TMCn1 OVFn 0 1 0 0 Free-running mode (b) Capture/compare control registers 0, 1 (CRC0, CRC1) CRCn 0 0 0 0 0 CRCn2 CRCn1 CRCn0 0 0/1 0 CRn0 used as compare register CRn1 used as compare register (c) 16-bit timer output control registers 0, 1 (TOC0, TOC1) TOCn 0 OSPTn OSPEn TOCn4 LVSn LVRn TOCn1 TOEn 0 1 1 0/1 0/1 1 1 Enables TOn output. Reverses output on match between TMn and CRn0. Specifies initial value of TOn output F/F. Reverses output on match between TMn and CRn1. Sets one-shot pulse output mode. Set to 1 for output. Caution Do not set CRn0 and CRn1 to 0000H. Remark 0/1: When these bits are reset to 0 or set to 1, other functions can be used along with the one-shot pulse output function. For details, refer to 7.1.4 (1) 16-bit timer mode control registers 0, 1 (TMC0, TMC1), 7.1.4 (2) Capture/compare control registers 0, 1 (CRC0, CRC1), and 7.1.4 (3) 16-bit timer output control registers 0, 1 (TOC0, TOC1). 226 User's Manual U13850EJ6V0UD CHAPTER 7 TIMER/COUNTER FUNCTION Figure 7-24. Timing of One-Shot Pulse Output Operation with Software Trigger Sets 0CH to TMCn (TMn count starts) Count clock TMn count value 0000H 0001H N N+1 0000H N-1 N M-1 M M+1 CRn1 set value N N N N CRn0 set value M M M M M+2 OSPTn INTTMn1 INTTMn0 TOn pin output Caution 16-bit timer register n starts operating as soon as TMCn2 and TMCn3 have been set to values other than 0, 0 (operation stop mode). Remark n = 0, 1 N<M (2) One-shot pulse output with external trigger A one-shot pulse can be output from the TOn pin by setting 16-bit timer mode control register n (TMCn), capture/compare control register n (CRCn), and 16-bit timer output control register n (TOCn) as shown in Figure 7-25, and by using the valid edge of the TIn0 pin as an external trigger. The valid edge of the TIn0 pin is specified by bits 4 and 5 (ESn00 and ESn01) of prescaler mode register n0 (PRMn0). The rising, falling, or both the rising and falling edges can be specified. When the valid edge of the TIn0 pin is detected, the 16-bit timer/event counter is cleared and started, and the output is asserted at the count value (N) set in advance to 16-bit capture/compare register n1 (CRn1). After that, the output is deasserted at the count value (M) set in advance to 16-bit capture/compare register n0 Note (CRn0) . Note This is an example when N < M. When N > M, the output is asserted by CRn0 and deasserted by CRn1. Caution If an external trigger occurs while a one-shot pulse is being output, the 16-bit timer/event counter is cleared and started and a one-shot pulse is output again. User's Manual U13850EJ6V0UD 227 CHAPTER 7 TIMER/COUNTER FUNCTION Figure 7-25. Control Register Settings for One-Shot Pulse Output with External Trigger (a) 16-bit timer mode control registers 0, 1 (TMC0, TMC1) TMCn 0 0 0 0 TMCn3 TMCn2 TMCn1 OVFn 1 0 0 0 Clears and starts at valid edge of TIn0 pin. (b) Capture/compare control registers 0, 1 (CRC0, CRC1) CRCn 0 0 0 0 0 CRCn2 CRCn1 CRCn0 0 0/1 0 CRn0 used as compare register CRn1 used as compare register (c) 16-bit timer output control registers 0, 1 (TOC0, TOC1) TOCn 0 OSPTn OSPEn TOCn4 LVSn LVRn TOCn1 TOEn 0 1 1 0/1 0/1 1 1 Enables TOn output. Reverses output on match between TMn and CRn0. Specifies initial value of TOn output F/F. Reverses output on match between TMn and CRn1. Sets one-shot pulse output mode. Caution Do not set CRn0 and CRn1 to 0000H. Remark 0/1: When these bits are reset to 0 or set to 1, other functions can be used along with the one-shot pulse output function. For details, refer to 7.1.4 (1) 16-bit timer mode control registers 0, 1 (TMC0, TMC1), 7.1.4 (2) Capture/compare control registers 0, 1 (CRC0, CRC1), and 7.1.4 (3) 16-bit timer output control registers 0, 1 (TOC0, TOC1). 228 User's Manual U13850EJ6V0UD CHAPTER 7 TIMER/COUNTER FUNCTION Figure 7-26. Timing of One-Shot Pulse Output Operation with External Trigger (with Rising Edge Specified) Sets 08H to TMCn (TMn count starts) Count clock TMn count value 0000H 0001H 0000H N N+1 N+2 M-2 M-1 M M+1 M+2 Value to set CRn1 N N N N Value to set CRn0 M M M M TIn0 pin input INTTMn1 INTTMn0 TOn pin output Caution 16-bit timer register n starts operating as soon as TMCn2 and TMCn3 have been set to values other than 0, 0 (operation stop mode). Remark n = 0, 1 N<M User's Manual U13850EJ6V0UD 229 CHAPTER 7 TIMER/COUNTER FUNCTION 7.2.7 Cautions (1) Error on starting timer An error of up to 1 clock occurs before the match signal is generated after the timer has been started. This is because 16-bit timer register n (TMn) is started asynchronously to the count pulse. Figure 7-27. Start Timing of 16-Bit Timer Register n Count pulse TMn count value 0000H 0001H 0002H 0003H 0004H Timer starts Remark n = 0, 1 (2) 16-bit capture/compare register setting (clear & start mode on match between TMn and CRn0) Set 16-bit capture/compare registers n0, n1 (CRn0, CRn1) to a value other than 0000H (the 1-pulse count operation is disabled when these registers are used as event counters). (3) Setting compare register during timer count operation If the value to which the current value of 16-bit capture/compare register n0 (CRn0) has been changed is less than the value of 16-bit timer register n (TMn), TMn continues counting, overflows, and starts counting again from 0. If the new value of CRn0 (M) is less than the old value (N), the timer must be reset and then restarted after the value of CRn0 has been changed. Figure 7-28. Timing After Changing Compare Register During Timer Count Operation Count pulse CRn0 TMn count value M N X-1 X FFFFH Remarks 1. N > X > M 2. n = 0, 1 230 User's Manual U13850EJ6V0UD 0000H 0001H 0002H CHAPTER 7 TIMER/COUNTER FUNCTION (4) Data hold timing of capture register If the valid edge is input to the TIn0 pin while 16-bit capture/compare register n1 (CRn1) is being read, CRn1 performs the capture operation, but this read value is not guaranteed. However, the interrupt request signal (INTTMn1) is set as a result of detection of the valid edge. Figure 7-29. Data Hold Timing of Capture Register Count pulse TMn count value N N+1 N+2 M M+1 M+2 Edge input INTTMn1 Capture read signal CRn1 interrupt value X N+1 Capture operation A capture operation is performed but the read value is not guaranteed. Remark n = 0, 1 (5) Setting valid edge Before setting the valid edge of the TIn0 pin, stop the timer operation by resetting the TMCn2 and TMCn3 bits of 16-bit timer mode control register n to 0, 0. Set the valid edge by using the ESn00 and ESn01 bits of prescaler mode register n0 (PRMn0). (6) Re-triggering one-shot pulse (a) One-shot pulse output by software When a one-shot pulse is being output, do not set OSPTn to 1. Do not output the one-shot pulse again until the current one-shot pulse output ends. (b) One-shot pulse output with external trigger If an external trigger occurs while a one-shot pulse is being output, the 16-bit timer/event counter is cleared and started and a one-shot pulse is output again. (c) One-shot pulse output function When using the one-shot pulse output function of timer 0 or 1 by software trigger, do not change the level of the TIn0 pin or the pin multiplexed with it. Even in this case, the external trigger remains valid. Consequently, the timer is cleared and started by the level of the TIn0 pin or the pin multiplexed with it, and a pulse is output when it is not expected. User's Manual U13850EJ6V0UD 231 CHAPTER 7 TIMER/COUNTER FUNCTION (7) Operation of OVFn bit (a) OVFn bit set The OVFn bit is set to 1 in the following case in addition to when the TMn register overflows: Select the mode in which the timer is cleared and started on a match between TMn and CRn0 or the mode in which it is cleared and started by the valid edge of TIn0. Set CRn0 to FFFFH. When TMn is cleared from FFFFH to 0000H on a match with the CRn0 register Figure 7-30. Operation Timing of OVFn Bit Count pulse CRn0 TMn FFFFH FFFEH FFFFH 0000H 0001H OVFn INTTMn0 Remark n = 0, 1 (b) Clear OVFn bit Even if the OVFn bit is cleared before the next count clock is counted (before TMn become 0001H) after TMn has overflowed, the OVFn flag is set again and the clear becomes invalid. (8) Conflict operation (a) If the read period and capture trigger input conflict When 16-bit capture/compare registers n0 and n1 (CRn0, CRn1) are used as capture registers, if the read period and capture trigger input conflict, the capture trigger has priority. The read data of CRn0 and CRn1 is undefined. (b) If the match timings of the write period and TMn conflict When 16-bit capture/compare registers n0 and n1 (CRn0, CRn1) are used as capture registers, because match detection cannot be performed correctly if the match timings of the write period and 16-bit timer register n (TMn) conflict, do not write to CRn0 and CRn1 close to the match timing. (9) Timer operation (a) CRn1 capture Even if 16-bit timer register n (TMn) is read, a capture to 16-bit capture/compare register n1 (CRn1) is not performed. (b) Acknowledgment of TIn0 and TIn1 pins When the timer is stopped, input signals to the TIn0 and TIn1 pins are not acknowledged, regardless of the CPU operation. 232 User's Manual U13850EJ6V0UD CHAPTER 7 TIMER/COUNTER FUNCTION (c) One-shot pulse output The one-shot pulse output operates correctly only in free-running mode or in clear & start mode at the valid edge of the TIn0 pin. The one-shot pulse cannot be output in the clear & start mode on a match of TMn and CRn0 because an overflow does not occur. (10) Capture operation (a) If the valid edge of TIn0 is specified for the count clock When the valid edge of TIn0 is specified for the count clock, the capture register with TIn0 specified as a trigger will not operate correctly. (b) If both rising and falling edges are selected as valid edge of TIn0 If the CRn0 register capture trigger is set to the inverse phase of the valid edge of TIn0 and both the rising and falling edges are selected as the valid edge of TIn0, a capture operation is not performed. (c) To capture the signals correctly from TIn0 and TIn1 The capture trigger needs a pulse longer than twice the count clock selected by prescaler mode registers n0 and n1 (PRMn0, PRMn1) in order to correctly capture the signals from TIn1 and TIn0. (d) Interrupt request input Although a capture operation is performed a the falling edge of the count clock, interrupt request inputs (INTTMn0, INTTMn1) are generated at the rising edge of the next count clock. (11) Compare operation (a) When rewriting CRn0 and CRn1 during timer operation When rewriting 16-bit timer capture/compare registers n0 and n1 (CRn0, CRn1), if the value is close to or larger than the timer value, the match interrupt request generation or clear operation may not be performed correctly. (b) When CRn0 and CRn1 are set to compare mode When CRn0 and CRn1 are set to compare mode, they do not perform a capture operation even if a capture trigger is input. (12) Edge detection (a) When the TIn0 or TIn1 pin is high level immediately after a system reset When the TIn0 or TIn1 pin is high level immediately after a system reset, if the valid edge of the TIn0 or TIn1 pin is specified as the rising edge or both rising and falling edges, and the operation of 16-bit timer/counter n (TMn) is then enabled, the rising edge will be detected immediately. Care is therefore needed when the TIn0 or TIn1 pin is pulled up. However, when operation is enabled after being stopped, the rising or falling edge is not detected. (b) Sampling clock for noise elimination The sampling clock for noise elimination differs depending on whether the TIn0 valid edge is used as a count clock or a capture trigger. The former is sampled by fXX/2, and the latter is sampled by the count clock selected using prescaler mode registers n0 or n1 (PRMn0, PRMn1). Detecting the valid edge can eliminate short pulse width noise because a capture operation is performed only after the valid edge is sampled and a valid level is detected twice. User's Manual U13850EJ6V0UD 233 CHAPTER 7 TIMER/COUNTER FUNCTION 7.3 8-Bit Timer (TM2 to TM7) 7.3.1 Outline * 8-bit compare registers: 8 (CRn0) Can be used as 16-bit compare registers by connecting in cascade (2 max.). * Compare match/overflow interrupt request signal (INTTMn) output enabled * Event input (TIm) count enabled * Timer outputs that operate on match detection: 1 each (TOm) If using the P26/TI2/TO2, P27/TI3/TO3, P36/TI4/TO4, and P37/TI5/TO5 pins as the TO2 to TO5 pins (timer outputs), set the value of ports 2 and 3 (P2, P3) to 0 (low-level output) and the value of the port 2 and 3 mode registers (PM2, PM3) to 0 (port output mode). The logical sum (OR) of the output value of the port and the timer is output. Since the TOn pin and TIn pin share a pin, one or other of these functions (but not both) can be used. Remark n = 2 to 7, m = 2 to 5 7.3.2 Functions 8-bit timer n has the following two modes (n = 2 to 7). * Mode using timer alone (individual mode) * Mode using cascade connection (16-bit resolution: cascade connection mode) Caution Do not access following registers when not using the cascade connection. * 16-bit counters (TM23, TM45, TM67) * 16-bit compare registers (CR23, CR45, CR67) The two modes are described next. (1) Mode using timer alone (individual mode) The timer operates as an 8-bit timer/event counter. It can have the following functions. * Interval timer * External event counter * Square wave output * PWM output (2) Mode using cascade connection (16-bit resolution: cascade connection mode) The timer operates as a 16-bit timer/event counter by connecting TM2 and TM3 or TM4 and TM5 in cascade. It can have the following functions. * Interval timer with 16-bit resolution * External event counter with 16-bit resolution * Square wave output with 16-bit resolution The timer operates as a 16-bit timer/event counter by connecting TM6 and TM7 in cascade. * Interval timer with 16-bit resolution 234 User's Manual U13850EJ6V0UD CHAPTER 7 TIMER/COUNTER FUNCTION Figure 7-31. Block Diagram of TM2 to TM7 Internal bus 8-bit compare register n (CRn0) Match Selector Note 2 S TIm Count clockNote 1 Selector INTTMn Mask circuit 8-bit counter n OVF (TMn) Q INV Selector TOm R Clear /4 S Selector TCLn2 TCLn1 TCLn3 TCEn TCLn0 Timer clock selection register n0, n1 (TCLn0, TCLn1) Invert level Q R TMCn6 TMCn4 LVSm LVRm TMCm1 TOEm Timer mode control n0, n1 (TCLn0, TCLn1) Internal bus Notes 1. The count clock is set by the TCLn register. 2. Clock of serial interface (TM2 and TM3 only) Remarks 1. " ]" is a signal that can be directly connected to a port. 2. n = 2 to 7, m = 2 to 5 7.3.3 Configuration Timer n includes the following hardware. Table 7-5. Configuration of Timers 2 to 7 Item Configuration Timer registers 8-bit counters 2 to 7 (TM2 to TM7) 16-bit counters 23, 45, 67 (TM23, TM45, TM67): Only when connecting in cascade Registers 8-bit compare registers 2 to 7 (CR20 to CR70) 16-bit compare registers 23, 45, 67 (CR23, CR45, CR67): Only when connecting in cascade Timer outputs TO2 to TO5 Control registers Timer clock selection registers 20 to 70 and 21 to 71 (TCL20 to TCL70 and TCL21 to TCL71) 8-bit timer mode control registers 2 to 7 (TMC2 to TMC7) User's Manual U13850EJ6V0UD 235 CHAPTER 7 TIMER/COUNTER FUNCTION (1) 8-bit counters 2 to 7 (TM2 to TM7) TMn is an 8-bit read-only register that counts the count pulses. The counter is incremented in synchronization with the rising edge of the count clock. TM2 and TM3 or TM5 and TM6 can be connected in cascade and used as 16-bit timers. When TMm and TMm+1 are connected in cascade and used as a 16-bit timer, they can be read by a 16-bit memory manipulation instruction. However, since they are connected via the internal 8-bit bus, TMm and TMm+1 are read separately. Consequently, they should be read twice and compared to allow for count variation. When the count is read out during operation, the count clock input temporarily stops and the count is read at that time. In the following cases, the count becomes 00H. (1) RESET is input. (2) TCEn is cleared. (3) TMn and CRn0 match in the clear and start mode that occurs when TMn and CRn0 match. Caution When connected in cascade, these registers become 00H even when TCEn in the lower timers (TM2, TM4, TM6) is cleared. Remark n = 2 to 7 m = 2, 4, 6 (2) 8-bit compare registers 2 to 7 (CR20 to CR70) The CRn0 register is set by an 8-bit memory manipulation instruction. The value set in CRn0 is always compared to the count in 8-bit counter n (TMn). If the two values match, an interrupt request (INTTMn) is generated (except in the PWM mode). The value of CRn0 can be set in the range of 00H to FFH, and can be written during counting. When TMm and TMm+1 are connected in cascade and used as a 16-bit timer, CRm0 and CR (m+1) 0 operate as a 16-bit compare register that is set by a 16-bit memory manipulation instruction. This register generates an interrupt request (INTTMm) when the counter value and register value are compared as 16 bits and match. Since the INTTMm+1 interrupt request is also generated at that time, mask the INTTMm+1 interrupt request when TMm and TMm+1 are used connected in cascade. RESET input sets these registers to 00H. Caution If data is set in a cascade connection, always set after stopping the timer. Remark n = 2 to 7 m = 2, 4, 6 7.3.4 Timer n control register The following two types of registers control timer n. * Timer clock selection registers n0, n1 (TCLn0, TCLn1) * 8-bit timer mode control register n (TMCn) 236 User's Manual U13850EJ6V0UD CHAPTER 7 TIMER/COUNTER FUNCTION (1) Timer clock selection registers 20 to 71 and 21 to 71 (TCL20 to TCL70 and TCL21 to TCL71) These registers set the count clock of timer n. TCLn0 and TCLn1 are set by an 8-bit memory manipulation instruction. RESET input clears these registers to 00H. After reset: 00H TCLn0 R/W Address: FFFFF244H, FFFFF254H 7 6 5 4 3 2 1 0 0 0 0 0 0 TCLn2 TCLn1 TCLn0 (n = 2, 3) After reset: 00H TCLn1 R/W Address: FFFFF24EH, FFFFF25EH 7 6 5 4 3 2 1 0 0 0 0 0 0 0 0 TCLn3 (n = 2, 3) TCLn3 TCLn2 TCLn1 Count clock selection TCLn0 fXX Count clock Note 20 MHzNote 12.58 MHz - - 0 0 0 0 TIn falling edge 0 0 0 1 TIn rising edge 0 0 1 0 fXX/4 200 ns 318 ns 0 0 1 1 fXX/8 400 ns 636 ns 0 1 0 0 fXX/16 800 ns 1.3 s 0 1 0 1 fXX/32 1.6 s 2.5 s 0 1 1 0 fXX/128 6.4 s 10.2 s 0 1 1 1 fXX/512 25.6 s 40.7 s 1 0 0 0 Setting prohibited - - 1 0 0 1 Setting prohibited 1 0 1 0 fXX/64 3.2 s 5.1 s 1 0 1 1 fXX/256 12.8 s 20.3 s 1 1 0 0 Setting prohibited - - 1 1 0 1 Setting prohibited - - 1 1 1 0 Setting prohibited - - 1 1 1 1 Setting prohibited - - - - - - Only in the V850/SB1. Cautions 1. When TCLn0 and TCLn1 are overwritten by different data, write after temporarily stopping the timer. 2. Always set bits 3 to 7 to in TCLn0 to 0, and bits 1 to 7 in TCLn1 to 0. Remark When connected in cascade, the settings of TCL33 to TCL30 of TM3 are invalid. User's Manual U13850EJ6V0UD 237 CHAPTER 7 After reset: 00H TCLn0 R/W TIMER/COUNTER FUNCTION Address: FFFFF264H, FFFFF274H 7 6 5 4 3 2 1 0 0 0 0 0 0 TCLn2 TCLn1 TCLn0 (n = 4, 5) After reset: 00H TCLn1 R/W Address: FFFFF26EH, FFFFF27EH 7 6 5 4 3 2 1 0 0 0 0 0 0 0 0 TCLn3 (n = 4, 5) TCLn3 TCLn2 TCLn1 TCLn0 Count clock selection fXX Count clock Note 20 MHzNote 12.58 MHz - - 0 0 0 0 TIn falling edge 0 0 0 1 TIn rising edge 0 0 1 0 fXX/4 200 ns 318 ns 0 0 1 1 fXX/8 400 ns 636 ns 0 1 0 0 fXX/16 800 ns 1.3 s 0 1 0 1 fXX/32 1.6 s 2.5 s 0 1 1 0 fXX/128 6.4 s 10.2 s 0 1 1 1 fXT (Subclock) 30.5 s 30.5 s 1 0 0 0 Setting prohibited - - 1 0 0 1 Setting prohibited 1 0 1 0 fXX/64 3.2 s 5.1 s 1 0 1 1 fXX/256 12.8 s 20.3 s 1 1 0 0 Setting prohibited - - 1 1 0 1 Setting prohibited - - 1 1 1 0 Setting prohibited - - 1 1 1 1 Setting prohibited - - - - - - Only in the V850/SB1. Cautions 1. When TCLn0 and TCLn1 are overwritten by different data, write after temporarily stopping the timer. 2. Always set bits 3 to 7 of TCLn0 and bits 1 to 7 of TCLn1 to 0. Remark 238 When connected in cascade, the settings of TCL53 to TCL50 of TM5 are invalid. User's Manual U13850EJ6V0UD CHAPTER 7 After reset: 00H TCLn0 R/W TIMER/COUNTER FUNCTION Address: FFFFF284H, FFFFF294H 7 6 5 4 3 2 1 0 0 0 0 0 0 TCLn2 TCLn1 TCLn0 (n = 6, 7) After reset: 00H TCLn1 R/W Address: FFFFF28EH, FFFFF29EH 7 6 5 4 3 2 1 0 0 0 0 0 0 0 0 TCLn3 (n = 6, 7) TCLn3 TCLn2 TCLn1 TCLn0 Count clock selection Count clock fXX 20 MHz Note Note 12.58 MHz 0 0 0 0 Setting prohibited - - 0 0 0 1 Setting prohibited - - 0 0 1 0 fXX/4 200 ns 318 ns 0 0 1 1 fXX/8 400 ns 636 ns 0 1 0 0 fXX/16 800 ns 1.3 s 0 1 0 1 fXX/32 1.6 s 2.5 s 0 1 1 0 fXX/64 3.2 s 5.1 s 0 1 1 1 fXX/128 6.4 s 10.2 s 1 0 0 0 Setting prohibited - - 1 0 0 1 Setting prohibited - - 1 0 1 0 fXX/256 12.8 s 20.3 s 1 0 1 1 fXX/512 25.6 s 40.7 s 1 1 0 0 Setting prohibited - - 1 1 0 1 Setting prohibited - - 1 1 1 0 Setting prohibited - - 1 1 1 1 TM0 overflow signal - - Only in the V850/SB1. Cautions 1. When TCLn0 and TCLn1 are overwritten by different data, write after temporarily stopping the timer. 2. Always set bits 3 to 7 of TCLn0 and bits 1 to 7 of TCLn1 to 0. Remark When connected in cascade, the settings of TCL73 to TCL70 of TM7 are invalid. User's Manual U13850EJ6V0UD 239 CHAPTER 7 TIMER/COUNTER FUNCTION (2) 8-bit timer mode control registers 2 to 7 (TMC2 to TMC7) The TMCn register makes the following six settings. (1) Controls counting by 8-bit counter n (TMn) (2) Selects the operating mode of 8-bit counter n (TMn) (3) Selects the individual mode or cascade connection mode (4) Sets the state of the timer output flip-flop (5) Controls the timer flip-flop or selects the active level in the PWM (free-running) mode (6) Controls timer output TMCn is set by an 8-bit or 1-bit memory manipulation instruction. RESET input sets these registers to 04H (although the state of hardware is initialized to 04H, 00H is read when reading). 240 User's Manual U13850EJ6V0UD CHAPTER 7 After reset: 04H TMCn R/W Address: TIMER/COUNTER FUNCTION TMC2 FFFFF246H TMC5 FFFFF276H TMC3 FFFFF256H TMC6 FFFFF286H TMC4 FFFFF266H TMC7 FFFFF296H <7> 6 5 4 <3> <2> 1 <0> TCEn TMCn6 0 TMCn4 LVSm LVRm TMCm1 TOEm (n = 2 to 7, m = 2 to 5) TCEn TMn count operation control 0 Counting is disabled after the counter is cleared to 0 (prescaler disabled) 1 Start count operation TMCn6 TMn operating mode selection 0 Clear & Start mode when TMn and CRn0 match 1 PWM (free-running) mode TMCn4 Individual mode or cascade connection mode selection 0 Individual mode (fixed to 0 when n = 2, 4, 6) 1 Cascade connection mode (connection to lower timer) LVSm LVRm 0 0 Not change 0 1 Reset timer output flip-flop to 0 1 0 Set timer output flip-flop to 1 1 1 Setting prohibited TMCm1 Setting state of timer output flip-flop Other than PWM (free-running) mode (TMCn6 = 0) PWM (free-running) mode (TMCn6 = 1) Control of timer F/F Selection of active level 0 Disable inversion operation Active high 1 Enable inversion operation Active low TOEm Timer output control 0 Disable output (port mode) 1 Enable output Cautions 1. When using as the timer output pin (TOm), set the port value to 0 (port mode output). An ORed value of the timer output value is output. 2. Since TOm and TIm share the same pin, only one of the functions can be used. Remarks 1. 2. In the PWM mode, the PWM output is set to the inactive level by TCEm = 0. If LVSm and LVRm are read after setting data, 0 is read. User's Manual U13850EJ6V0UD 241 CHAPTER 7 TIMER/COUNTER FUNCTION 7.4 8-Bit Timer Operation 7.4.1 Operation as interval timer (8-bit operation) The timer operates as an interval timer that repeatedly generates interrupts at the interval of the count preset by 8bit compare register n (CRn0). If the count in 8-bit counter n (TMn) matches the value set in CRn0, the value of TMn is cleared to 0 and TMn continues counting. At the same time, an interrupt request signal (INTTMn) is generated. The TMn count clock can be selected by the TCLn0 to TCLn2 bits of timer clock selection register n0 (TCLn0) and by the TCLn3 bit of timer clock selection register n1 (TCLn1) (n = 2 to 7). Setting method (1) Set each register. * TCLn0, TCLn1: Select the count clock. * CRn0: Compare value * TMCn: Selects the clear and start mode when TMn and CRn0 match. (TMCn = 0000xx11B, x is don't care) (2) When TCEn = 1 is set, counting starts. (3) When the values of TMn and CRn0 match, INTTMn is generated (TMn is cleared to 00H). (4) Then, INTTMn is repeatedly generated at the same interval. When counting stops, set TCEn = 0. Figure 7-32. Timing of Interval Timer Operation (1/3) Basic operation t Count clock TMn count value 00H N 01H Count start CRn0 00H 01H N 01H N N N TCEn INTTMn Interrupt acknowledgment TOm Interval time Interval time Remarks 1. Interval time = (N + 1) x t; N = 00H to FFH 2. n = 2 to 7, m = 2 to 5 242 N Clear Clear N 00H User's Manual U13850EJ6V0UD Interrupt acknowledgment Interval time CHAPTER 7 TIMER/COUNTER FUNCTION Figure 7-32. Timing of Interval Timer Operation (2/3) When CRn0 = 00H t Count clock TMn 00H 00H 00H 00H 00H CRn0 TCEn INTTMn TOm Interval time Remark n = 2 to 7, m = 2 to 5 When CRn0 = FFH t Count clock 01H TMn CRn0 FFH FEH FFH 00H FEH FFH FFH 00H FFH TCEn INTTMn Interrupt acknowledgment Interrupt acknowledgment TOm Interval time Remark n = 2 to 7, m = 2 to 5 User's Manual U13850EJ6V0UD 243 CHAPTER 7 TIMER/COUNTER FUNCTION Figure 7-32. Timing of Interval Timer Operation (3/3) Operated by CRn0 transition (M < N) Count clock TMn 00H M N FFH N CRn0 00H M 00H M TCEn INTTMn TOm CRn0 transition Remark TMn overflows since M < N n = 2 to 7, m = 2 to 5 Operated by CRn0 transition (M > N) Count clock TMn CRn0 N-1 N 00H 01H N N M TCEn INTTMn TOm CRn0 transition Remark n = 2 to 7, m = 2 to 5 244 M-1 User's Manual U13850EJ6V0UD M 00H 01H CHAPTER 7 TIMER/COUNTER FUNCTION 7.4.2 Operation as external event counter The external event counter counts the number of external clock pulses that are input to TIn. Each time a valid edge specified by timer clock selection register n0, n1 (TCLn0, TCLn1) is input, TMn is incremented. The edge setting can be selected as either the rising or falling edge. If the total of TMn and the value of 8-bit compare register n (CRn0) match, TMn is cleared to 0 and an interrupt request signal (INTTMn) is generated. INTTMn is generated each time the TMn value matches the CRn0 value. Remark n = 2 to 5 Figure 7-33. Timing of External Event Counter Operation (with Rising Edge Specified) TIn TMn count value CRn0 0000 0001 0002 0003 0004 N-1 0005 N 0000 0001 0002 0003 N INTTMn Remark n = 2 to 5 User's Manual U13850EJ6V0UD 245 CHAPTER 7 TIMER/COUNTER FUNCTION 7.4.3 Operation as square wave output (8-bit resolution) A square wave with any frequency is output at the interval preset by 8-bit compare register n (CRn0). By setting bit 0 (TOEn) of 8-bit timer mode control register n (TMCn) to 1, the output state of TOn is inverted with the count preset in CRn0 as the interval. Therefore, a square wave output with any frequency (duty factor = 50%) is possible. Setting method (1) Set the registers. * Set the port latch and port mode register to 0 * TCLn0, TCLn1: Select the count clock * CRn0: Compare value * TMCn: Clear and start mode when TMn and CRn0 match LVSn LVRn Setting State of Timer Output Flip-Flop 1 0 High level output 0 1 Low level output Inversion of timer output flip-flop enabled Timer output enabled TOEn = 1 (2) When TCEn = 1 is set, the counter starts operating. (3) If the values of TMn and CRn0 match, the timer output flip-flop inverts. Also, INTTMn is generated and TMn is cleared to 00H. (4) Then, the timer output flip-flop is inverted at the same interval to output a square wave from TOn. Remark n = 2 to 5 Figure 7-34. Square Wave Output Operation Timing Count clock TMn count value 00H 01H 02H N-1 N 00H 01H 02H N-1 N 00H Count start CRn0 N TOn Note The initial value of TOn output can be set by the LVSn and LVRn bits of the TMCn register. Remarks 1. Square-wave output frequency = 1/2 (N + 1) 2. n = 2 to 5 246 User's Manual U13850EJ6V0UD CHAPTER 7 TIMER/COUNTER FUNCTION 7.4.4 Operation as 8-bit PWM output By setting the TMCn6 bit of 8-bit timer mode control register n (TMCn) to 1, the timer operates as a PWM output. Pulses with the duty factor determined by the value set to 8-bit compare register n (CRn0) are output from TOn. Set the width of the active level of the PWM pulse to CRn0. The active level can be selected by the TMCn1 bit in TMCn. The count clock can be selected by the TCLn0 to TCLn2 bits of timer clock selection register n0 (TCLn0) and by the TCLn3 bit of timer clock selection register n1 (TCLn1). The PWM output can be enabled and disabled by the TOEn bit of TMCn. Caution CRn0 can be rewritten only once in one cycle while in the PWM mode. Remark n = 2 to 5 (1) Basic operation of the PWM output Setting method (1) Set the port latch and port mode register n to 0. (2) Set the active level width in 8-bit compare register n (CRn0). (3) Select the count clock using timer clock selection register n0, n1 (TCLn0, TCLn1). (4) Set the active level in TMCn1 bit of TMCn. (5) If TCEn bit of TMCn is set to 1, counting starts. When counting stops, set TCEn to 0. PWM output operation (1) When counting starts, the PWM output (output from TOn) outputs the inactive level until an overflow occurs. (2) When the overflow occurs, the active level specified in step (1) in the setting method is output. The active level is output until CRn0 and the count of 8-bit counter n (TMn) match. (3) The PWM output after CRn0 and the count match is the inactive level until an overflow occurs again. (4) Steps (2) and (3) repeat until counting stops. (5) If counting is stopped by TCEn = 0, the PWM output goes to the inactive level. Remark n = 2 to 5 User's Manual U13850EJ6V0UD 247 CHAPTER 7 (a) TIMER/COUNTER FUNCTION Basic operation of PWM output Figure 7-35. Timing of PWM Output Basic operation (active level = H) t Count clock TMn 00H 01H CRn0 FFH 00H 01H 02H N N+1 FFH 00H 01H M 02H 00H N TCEn INTTMn TOn Inactive level Active level Active level When CRn0 = 00H t Count clock TMn 00H 01H CRn0 FFH 00H 01H 02H N N+1 N+2 FFH 00H 01H M 02H 00H 00H TCEn INTTMn TOn Inactive level Inactive level When CRn0 = FFH t Count clock TMn CRn0 00H 01H FFH 00H 01H 02H N N+1 N+2 FFH 00H 01H 02H M 00H FFH TCEn INTTMn TOn Active level Inactive level 8 Remarks 1. PWM frequency = 2 t Duty = N/256 (N: CRn0 set value) 2. n = 2 to 5 248 User's Manual U13850EJ6V0UD Active level Inactive level Inactive level CHAPTER 7 (b) TIMER/COUNTER FUNCTION Operation based on CRn0 transitions Figure 7-36. Timing of Operation Based on CRn0 Transitions When the CRn0 value changes from N to M before TMn overflows Count clock TMn N N+ 1 N+ 2 CRn0 FFH 00H 01H 02H FFH 00H 01H 02H M M+1 M+2 M N TCEn M M+1 M+2 H INTTMn TOn CRn0 transition (N M) When the CRn0 value changes from N to M after TMn overflows Count clock TMn N N+1 N+2 CRn0 N TCEn FFH 00H 01H 02H 03H N N+1 N+2 FFH 00H 01H 02H M M+1 M+2 M N H INTTMn TOn CRn0 transition (N M) When the CRn0 value changes from N to M within two clocks (00H, 01H) immediately after TMn overflows Count clock TMn N N+1 N+2 CRn0 TCEn N FFH 00H 01H 02H 03H N N+1 N+2 N FFH 00H 01H 02H M M+1 M+2 M H INTTMn TOn CRn0 transition (N M) Remark n = 2 to 5 User's Manual U13850EJ6V0UD 249 CHAPTER 7 TIMER/COUNTER FUNCTION 7.4.5 Operation as interval timer (16 bits) (1) Cascade connection (16-bit timer) mode The V850/SB1 and V850/SB2 provide 16-bit registers that can be used only when connected in cascade. The following registers are available. TM2, TM3 cascade connection: 16-bit counter TM23 (Address: FFFFF24AH) 16-bit compare register CR23 (Address: FFFFF24CH) TM4, TM5 cascade connection: 16-bit counter TM45 (Address: FFFFF26AH) 16-bit compare register CR45 (Address: FFFFF26CH) TM6, TM7 cascade connection: 16-bit counter TM67 (Address: FFFFF28AH) 16-bit compare register CR67 (Address: FFFFF28CH) By setting the TMCm4 bit of 8-bit timer mode control register m (TMCm) to 1, the timer enters the timer/counter mode with 16-bit resolution (m = 3, 5, 7). With the count preset in 8-bit compare register n (CRn0) as the interval, the timer operates as an interval timer by repeatedly generating interrupts (n = 2 to 7). The following shows a setting method when using TM2 and TM3. When using TM4 and TM5 or TM6 and TM7, substitute them for TM2 and TM3. Setting method (TM2, TM3 cascade connection) (1) Setting registers * TCL20, TCL21: Select the count clock for TM2 (setting not necessary for TM3 because of cascade connection). * CR20, CR30: Compare value (00H to FFH can be set for compare values) * TMC2: Selects clear & start mode on a match of TM2 and CR2 (x: don't care) [TM2 TMC2 = 0000xxx0B, TM3 TMC3 = 0001xxx0B] (2) Set the TCE3 bit of TMC3 to 1. After that, set the TCE2 bit of TMC2 to 1 to start the count operation. (3) When the TM23 and CR23 values of the timer connected in cascade match, an interrupt request signal (INTTM2) is generated (TM2 and TM3 are cleared to 00H). (4) IMTTM2 is then repeatedly generated at the same interval. Cautions 1. The count operation can be started or stopped just by setting the TCE2 bit of TMC2. 2. When 8-bit timers (TM2, TM3) are connected in cascade and used as a 16-bit timer (TM23), change the setting value of the compare register (CR23) after stopping the count operation of the 8-bit timers connected in cascade. If the value of CR23 is changed without stopping the timers, the values of the higher 8 bits (TM3) become undefined. 3. Even during cascade connection, the interrupt request signal (INTTM3) of higher timer 3 (TM3) is generated when the count value of higher timer 3 (TM3) matches CR30. Be sure to mask TM3 to disable this interrupt. 250 User's Manual U13850EJ6V0UD CHAPTER 7 TIMER/COUNTER FUNCTION A timing example of the cascade connection mode with 16-bit resolution is shown below. Figure 7-37. Cascade Connection Mode with 16-Bit Resolution Count clock TMn 00H TMn + 1 00H 01H N N+1 CRn0 N CR(n+1)0 M FFH 00H FFH 00H 01H 02H FFH 00H 01H M- 1 M N 00H 01H A 00H 00H B 00H TCEn TCEn + 1 INTTMn TOm Interval time Enable operation starting count Remark Interrupt generation Level inverted Counter cleared Operation stopped n = 2, 4, 6, m = 2, 4 User's Manual U13850EJ6V0UD 251 CHAPTER 7 TIMER/COUNTER FUNCTION 7.4.6 Cautions (1) Error when the timer starts An error of up to 1 clock occurs in the time until the match signal is generated after the timer starts. The reason is that 8-bit counter n (TMn) starts asynchronous to the count pulse. Figure 7-38. Start Timing of Timer n Count pulse 00H TMn count value 01H 02H 03H 04H Timer starts Remark n = 2 to 7 (2) Operation after compare register is changed while timer is counting If the value after 8-bit compare register n (CRn0) changes is less than the value of the 8-bit timer register (TMn), counting continues, overflows, and counting starts again from 0. Consequently, when the value after CRn0 changes (M) is less than the value before the change (N) and less than the count value of the TMn register, the timer must restart after CRn0 changes (n = 2 to 5). Figure 7-39. Timing After Compare Register Changes During Timer Count Operation Count pulse CRn0 TMn count value N X-1 M X FFH 00H 01H 02H Remarks 1. N > X > M 2. n = 2 to 7 Caution Except when the TIm input is selected, always set TCEn = 0 before setting the stop state (m = 2 to 5). (3) TMn read out during timer operation Since reading out TMn during operation occurs while the selected clock is temporarily stopped, select a high-or low-level waveform that is longer than the selected clock (n = 2 to 7). 252 User's Manual U13850EJ6V0UD CHAPTER 8 WATCH TIMER 8.1 Function The watch timer has the following functions. * Watch timer * Interval timer The watch timer and interval timer functions can be used at the same time. 11-bit prescaler fW 4 INTWTNI WTNM7 WTNM6 WTNM5 WTNM4 WTNM3 WTNM2 WTNM1 WTNM0 WTNCS2 Watch timer clock selection register (WTNCS) INTWTN Clear fW/24 fW/25 fW/26 fW/27 fW/28 fW/210 fW/211 fW/29 WTNCS1 WTNCS0 5-bit counter Selector fXT Selector Clear fXX Selector Selector Figure 8-1. Block Diagram of Watch Timer Watch timer high-speed clock selection register (WTNHC) Watch timer mode control register (WTNM) Internal bus Caution The WTNHC register is available only in the B versions of the V850/SB1, PD703036H, 703036HY, 703037H, 703037HY, 70F3036H, 70F3036HY, 70F3037H, and 70F3037HY. Remark fXX: Main clock frequency fXT: Subclock frequency fW: Watch timer clock frequency User's Manual U13850EJ6V0UD 253 CHAPTER 8 WATCH TIMER (1) Watch timer The watch timer generates an interrupt request (INTWTN) at time intervals of 0.5 seconds or 0.25 seconds by using the main clock or subclock. (2) Interval timer The watch timer generates an interrupt request (INTWTNI) at time intervals specified in advance. Table 8-1. Interval Time of Interval Timer Interval Time fXT = 32.768 kHz 2 x 1/fW 488 s 2 x 1/fW 977 s 2 x 1/fW 1.95 ms 2 x 1/fW 3.91 ms 28 x 1/fW 7.81 ms 2 x 1/fW 15.6 ms 2 x 1/fW 31.2 ms 2 x 1/fW 62.4 ms 4 5 6 7 9 10 11 Remark fW: Watch timer clock frequency 8.2 Configuration The watch timer includes the following hardware. Table 8-2. Configuration of Watch Timer Item Configuration Counter 5 bits x 1 Prescaler 11 bits x 1 Control registers Watch timer mode control register (WTNM) Watch timer high-speed clock selection register (WTNHC)Note Watch timer clock selection register (WTNCS) Note The WTNHC register is available only in the B versions of the V850/SB1, PD703036H, 703036HY, 703037H, 703037HY, 70F3036H, 70F3036HY, 70F3037H, and 70F3037HY. 254 User's Manual U13850EJ6V0UD CHAPTER 8 WATCH TIMER 8.3 Watch Timer Control Registers The watch timer mode control register (WTNM), watch timer high-speed clock selection register (WTNHC) Note , and watch timer clock selection register (WTNCS) control the watch timer. The watch timer should be operated after setting the count clock and interval time. Caution The WTNHC register is available only in the B versions of the V850/SB1, PD703036H, 703036HY, 703037H, 703037HY, 70F3036H, 70F3036HY, 70F3037H, and 70F3037HY. (1) Watch timer mode control register (WTNM) This register enables or disables the count clock and operation of the watch timer, sets the interval time of the prescaler, controls the operation of the 5-bit counter, and sets the set time of the watch flag. WTNM is set by an 8-bit or 1-bit memory manipulation instruction. RESET input clears WTNM to 00H. After reset: 00H WTNM R/W Address: FFFFF360H 7 6 5 4 3 2 <1> <0> WTNM7 WTNM6 WTNM5 WTNM4 WTNM3 WTNM2 WTNM1 WTNM0 WTNM6 WTNM5 WTNM4 Selection interval time of prescaler 0 0 0 2 /fW (488 s) 0 0 1 25/fW (977 s) 0 1 0 26/fW (1.95 ms) 0 1 1 27/fW (3.91 ms) 1 0 0 28/fW (7.81 ms) 1 0 1 29/fW (15.6 ms) 1 1 0 210/fW (31.2 ms) 1 1 1 211/fW (62.4 ms) WTNM3 WTNM2 0 0 214/fW (0.5 s) 0 1 213/fW (0.25 s) 1 0 25/fW (977 s) 1 1 24/fW (488 s) 4 Watch timer interrupt WTM1 Control of operation of 5-bit counter 0 Clears after operation stops 1 Starts WTNM0 Watch timer operation enable 0 Operation stopped (clears both prescaler and 5-bit counter) 1 Operation enabled Remarks 1. fW: Watch timer clock frequency 2. Values in parentheses apply when fW = 32.768 kHz. 3. For the settings of WTNM7, refer to (3) Watch timer clock selection register (WTNCS). User's Manual U13850EJ6V0UD 255 CHAPTER 8 WATCH TIMER (2) Watch timer high-speed clock selection register (WTNHC) This register selects the count clock of the watch timer. The count clock is determined in combination with the WTNM7 bit of the WTNM register and the WTNCS1 and WTNCS0 bits of the watch timer clock selection register (WTNCS). WTNHC is set using an 8-bit memory manipulation instruction. RESET input clears WTNHC to 00H. After reset: 00H WTNHC Caution 0 R/W 0 Address: FFFFF366H 0 0 0 0 0 The WTNHC register is available only in the B versions of the V850/SB1, PD703036H, 703036HY, 703037H, 703037HY, 70F3036H, 70F3036HY, 70F3037H, and 70F3037HY. 256 WTNCS2 User's Manual U13850EJ6V0UD CHAPTER 8 WATCH TIMER (3) Watch timer clock selection register (WTNCS) This register selects the count clock of the watch timer. WTNCS is set using an 8-bit memory manipulation instruction. RESET input clears WTNCS to 00H. Caution Do not change the contents of the WTNM, WTNHC, and WTNCS registers (interval time, watch timer interrupt time, count clock) during a watch timer operation. After reset: 00H WTNCS 0 R/W 0 Address: FFFFF364H 0 0 0 0 WTNCS1 WTNCS0 WTNCS2Note WTNCS1 WTNCS0 WTNM7 Selection of count clock Main clock frequency 0 0 0 0 fXX/27 0 0 0 1 fXT (subclock) fXX/3 x 2 4.194 MHz 6 - 0 0 1 0 0 0 1 1 fXX/2 0 1 0 0 Setting prohibited - 0 1 0 1 Setting prohibited - fXX/3 x 2 8 6.291 MHz 8.388 MHz 7 0 1 1 0 0 1 1 1 9 fXX/2 16.777 MHz 1 0 1 0 fXX/32 x 26 18.874 MHz Other than above Setting prohibited 12.582 MHz - Note The WTNCS2 bit is available only in the B versions of the V850/SB1, PD703036H, 703036HY, 703037H, 703037HY, 70F3036H, 70F3036HY, 70F3037H, and 70F3037HY. Remark WTNM7 is bit 7 of the WTNM register. User's Manual U13850EJ6V0UD 257 CHAPTER 8 WATCH TIMER 8.4 Operation 8.4.1 Operation as watch timer The watch timer operates at time intervals of 0.5 seconds with the subclock (32.768 kHz). The watch timer generates an interrupt request at fixed time intervals. The count operation of the watch timer is started when bits 0 (WTNM0) and 1 (WTNM1) of the watch timer mode control register (WTNM) are set to 1. When these bits are cleared to 0, the 11-bit prescaler and 5-bit counter are cleared, and the watch timer stops the count operation. The watch timer clears the 5-bit counter by setting the WTNM1 bit to 0. At this time, an error of up to 15.6 ms may occur. The interval timer can be cleared by setting the WTNM0 bit to 0. However, because the 5-bit counter is cleared at the same time, an error of up to 0.5 seconds may occur when the watch timer overflows (INTWTN). 8.4.2 Operation as interval timer The watch timer can also be used as an interval timer that repeatedly generates an interrupt at intervals specified by a count value set in advance. The interval time can be selected by bits 4 to 6 (WTNM4 to WTNM6) of the watch timer mode control register (WTNM). Table 8-3. Interval Time of Interval Timer WTNM6 0 0 0 Interval Time fW = 32.768 kHz 0 2 x 1/fW 488 s 1 2 x 1/fW 977 s 4 5 1 0 2 x 1/fW 1.95 ms 0 1 1 27 x 1/fW 3.91 ms 0 2 x 1/fW 7.81 ms 1 2 x 1/fW 15.6 ms 0 2 x 1/fW 31.2 ms 1 2 x 1/fW 62.4 ms 1 1 1 258 0 WTNM4 0 1 Remark WTNM5 0 0 1 1 6 8 9 10 11 fW: Watch timer clock frequency User's Manual U13850EJ6V0UD CHAPTER 8 WATCH TIMER Figure 8-2. Operation Timing of Watch Timer/Interval Timer 5-bit counter 0H Overflow Start Overflow Count clock fW or fW/29 Watch timer interrupt INTWTN Interrupt time of watch timer (0.5 s) Interrupt time of watch timer (0.5 s) Interval timer interrupt INTWTNI Interval time (T) Interval time (T) nT Remark nT fW: Watch timer clock frequency ( ): fW = 32.768 kHz n: Interval timer operation count 8.4.3 Cautions It takes some time to generate the first watch timer interrupt request (INTWTN) after operation is enabled (WRNM1 and WTNM0 bits of WTNM register = 1). Figure 8-3. Watch Timer Interrupt Request (INTWTN) Generation (Interrupt Period = 0.5 s) It takes 0.515625 s to generate the first INTWTN (2 x 1/32.768 = 0.015625 s longer). INTWTN is then 9 generated every 0.5 s. WTNM0, WTNM1 0.515625 s 0.5 s 0.5 s INTWTN User's Manual U13850EJ6V0UD 259 CHAPTER 9 WATCHDOG TIMER 9.1 Functions The watchdog timer has the following functions. * Watchdog timer * Interval timer * Selecting the oscillation stabilization time Caution Use the watchdog timer mode register (WDTM) to select the watchdog timer mode or the interval timer mode. Figure 9-1. Block Diagram of Watchdog Timer RUN Clear fXX/210 fXX/222 Prescaler fXX/220 fXX/219 fXX/217 fXX/216 INTWDTNote 1 Selector fXX/218 Output controller INTWDTMNote 2 fXX/215 Selector fXX/214 3 WDCS WDCS2 WDCS1 WDCS0 OSC 3 OSTS OSTS2 OSTS1 OSTS0 Internal bus Notes 1. 2. Remark 260 In watchdog timer mode In interval timer mode fXX: Main clock frequency User's Manual U13850EJ6V0UD WDTM RUN WDTM4 CHAPTER 9 WATCHDOG TIMER (1) Watchdog timer mode This mode detects an inadvertent program loop. When an inadvertent program loop is detected, a non-maskable interrupt can be generated. Table 9-1. Inadvertent Program Loop Detection Time of Watchdog Timer Clock Inadvertent Program Loop Detection Time fXX = 20 MHzNote fXX = 12.58 MHz 14 819.2 s 1.3 ms 15 1.6 ms 2.6 ms 16 3.3 ms 5.2 ms 17 6.6 ms 10.4 ms 18 13.1 ms 20.8 ms 19 26.2 ms 41.6 ms 20 52.4 ms 83.3 ms 22 209.7 ms 333.4 ms 2 /fXX 2 /fXX 2 /fXX 2 /fXX 2 /fXX 2 /fXX 2 /fXX 2 /fXX Note Only in the V850/SB1. (2) Interval timer mode Interrupts are generated at a preset time interval. Table 9-2. Interval Time of Interval Timer Clock Interval Time fXX = 20 MHz Note fXX = 12.58 MHz 14 819.2 s 1.3 ms 15 1.6 ms 2.6 ms 16 3.3 ms 5.2 ms 17 6.6 ms 10.4 ms 18 13.1 ms 20.8 ms 19 26.2 ms 41.6 ms 20 52.4 ms 83.3 ms 22 209.7 ms 333.4 ms 2 /fXX 2 /fXX 2 /fXX 2 /fXX 2 /fXX 2 /fXX 2 /fXX 2 /fXX Note Only in the V850/SB1. User's Manual U13850EJ6V0UD 261 CHAPTER 9 WATCHDOG TIMER 9.2 Configuration The watchdog timer includes the following hardware. Table 9-3. Configuration of Watchdog Timer Item Configuration Control registers Oscillation stabilization time selection register (OSTS) Watchdog timer clock selection register (WDCS) Watchdog timer mode register (WDTM) 9.3 Watchdog Timer Control Register The registers to control the watchdog timer are shown below. * Oscillation stabilization time selection register (OSTS) * Watchdog timer clock selection register (WDCS) * Watchdog timer mode register (WDTM) (1) Oscillation stabilization time selection register (OSTS) This register selects the oscillation stabilization time after a reset is applied or the STOP mode is released until the oscillation is stable. OSTS is set by an 8-bit memory manipulation instruction. RESET input sets OSTS to 04H. After reset: 04H 7 OSTS 0 OSTS2 R/W 6 Address: FFFFF380H 5 0 OSTS1 4 0 3 0 OSTS0 2 0 1 OSTS2 OSTS1 fXX 20 MHz 0 0 0 1 0 0 1 1 0 0 1 0 1 0 Other than above 14 2 /fXX 16 2 /fXX 17 2 /fXX 18 2 /fXX 19 2 /fXX (after reset) Setting prohibited Note Only in the V850/SB1. 262 OSTS0 Oscillation stabilization time selection Clock 0 0 User's Manual U13850EJ6V0UD Note 12.58 MHz 819.2 s 1.3 ms 3.3 ms 5.2 ms 6.6 ms 10.4 ms 13.1 ms 20.8 ms 26.2 ms 41.6 ms CHAPTER 9 WATCHDOG TIMER (2) Watchdog timer clock selection register (WDCS) This register selects the overflow time of the watchdog timer and the interval timer. WDCS is set by an 8-bit memory manipulation instruction. RESET input clears WDCS to 00H. After reset: 00H WDCS R/W Address: FFFFF382H 7 6 5 4 3 2 1 0 0 0 0 0 0 WDCS2 WDCS1 WDCS0 WDCS2 WDCS1 WDCS0 Watchdog timer/interval timer overflow time Clock fXX 20 MHz 0 0 0 0 0 0 1 1 0 819.2 s 1.3 ms 15 1.6 ms 2.6 ms 16 3.3 ms 5.2 ms 17 6.6 ms 10.4 ms 18 2 /fXX 0 2 /fXX 1 12.58 MHz 14 2 /fXX 1 Note 2 /fXX 1 0 0 2 /fXX 13.1 ms 20.8 ms 1 0 1 219/fXX 1 1 1 1 0 26.2 ms 41.6 ms 20 52.4 ms 83.3 ms 22 209.7 ms 333.4 ms 2 /fXX 1 2 /fXX Note Only in the V850/SB1. Caution Be sure to set bits 3 to 7 to 0. User's Manual U13850EJ6V0UD 263 CHAPTER 9 WATCHDOG TIMER (3) Watchdog timer mode register (WDTM) This register sets the operating mode of the watchdog timer, and enables and disables counting. WDTM is set by an 8-bit or 1-bit memory manipulation instruction. RESET input clears WDTM to 00H. After reset: 00H WDTM R/W Address: FFFFF384H <7> 6 5 4 3 2 1 0 RUN 0 0 WDTM4 0 0 0 0 Operating mode selection for the watchdog timerNote 1 RUN 0 Disable count 1 Clear count and start counting WDTM4 0 Operating mode selection for the watchdog timerNote 2 Interval timer mode (If an overflow occurs, the maskable interrupt INTWDTM is generated.) 1 Watchdog timer mode 1 (If an overflow occurs, the non-maskable interrupt INTWDT is generated.) Notes 1. Once RUN is set (1), the register cannot be cleared (0) by software. Therefore, when counting starts, counting cannot be stopped except by RESET input. 2. Caution Once WDTM4 is set (1), the register cannot be cleared (0) by software. 10 If RUN is set (1) and the watchdog timer is cleared, the actual overflow time may be up to 2 /fXX seconds shorter than the set time. 264 User's Manual U13850EJ6V0UD CHAPTER 9 WATCHDOG TIMER 9.4 Operation 9.4.1 Operation as watchdog timer Set bit 4 (WDTM4) of the watchdog timer mode register (WDTM) to 1 to operate as a watchdog timer to detect an inadvertent program loop. Setting bit 7 (RUN) of WDTM to 1 starts the count operation. After counting starts, if RUN is set to 1 again within the set time interval for inadvertent program loop detection, the watchdog timer is cleared and counting starts again. If RUN is not set to 1 and the inadvertent program loop detection time has elapsed, a non-maskable interrupt (INTWDT) is generated (no reset functions). The watchdog timer stops running in the IDLE mode and STOP mode. Consequently, set RUN to 1 and clear the watchdog timer before entering the IDLE mode or STOP mode. Do not set the watchdog timer when operating the HALT mode since the watchdog timer running in HALT mode. 10 Cautions 1. The actual inadvertent program loop detection time may be up to 2 /fXX seconds less than the set time. 2. When the subclock is selected for the CPU clock, the watchdog timer stops (retains) counting. Table 9-4. Inadvertent Program Loop Detection Time of Watchdog Timer Clock Inadvertent Program Loop Detection Time fXX = 20 MHzNote fXX = 12.58 MHz 14 819.2 s 1.3 ms 15 1.6 ms 2.6 ms 16 3.3 ms 5.2 ms 17 6.6 ms 10.4 ms 18 2 /fXX 13.1 ms 20.8 ms 219/fXX 26.2 ms 41.6 ms 220/fXX 52.4 ms 83.3 ms 209.7 ms 333.4 ms 2 /fXX 2 /fXX 2 /fXX 2 /fXX 22 2 /fXX Note Only in the V850/SB1. User's Manual U13850EJ6V0UD 265 CHAPTER 9 WATCHDOG TIMER 9.4.2 Operation as interval timer Set bit 4 (WDTM4) to 0 in the watchdog timer mode register (WDTM) to operate the watchdog timer as an interval timer that repeatedly generates interrupts with a preset count value as the interval. When operating as an interval timer, the interrupt mask flag (WDTMK) of the WDTIC register and the priority setting flag (WDTPR0 to WDTPR2) become valid, and a maskable interrupt (INTWDTM) can be generated. The default priority of INTWDTM has the highest priority setting of the maskable interrupts. The interval timer continues operating in the HALT mode and stops in the IDLE mode and STOP mode. Therefore, before entering the IDLE mode/STOP mode, set the RUN bit of the WDTM register to 1 and clear the interval timer. Then set the IDLE mode/STOP mode. Cautions 1. Once bit 4 (WDTM4) of WDTM is set to 1 (selecting the watchdog timer mode), the interval timer mode is not entered as long as RESET is not input. 10 2. The interval time immediately after being set by WDTM may be up to 2 /fXX seconds less than the set time. 3. When the subclock is selected for the CPU clock, the watchdog timer stops (retains) counting. Table 9-5. Interval Time of Interval Timer Clock Interval Time fXX = 20 MHz Note fXX = 12.58 MHz 14 819.2 s 1.3 ms 15 1.6 ms 2.6 ms 16 3.3 ms 5.2 ms 17 6.6 ms 10.4 ms 18 13.1 ms 20.8 ms 19 26.2 ms 41.6 ms 20 52.4 ms 83.3 ms 22 209.7 ms 333.4 ms 2 /fXX 2 /fXX 2 /fXX 2 /fXX 2 /fXX 2 /fXX 2 /fXX 2 /fXX Note Only in the V850/SB1. 266 User's Manual U13850EJ6V0UD CHAPTER 9 WATCHDOG TIMER 9.5 Standby Function Control Register (1) Oscillation stabilization time selection register (OSTS) The wait time from releasing the stop mode until the oscillation stabilizes is controlled by the oscillation stabilization time selection register (OSTS). OSTS is set by an 8-bit memory manipulation instruction. RESET input sets OSTS to 04H. After reset: 04H OSTS R/W Address: FFFFF380H 7 6 5 4 3 2 1 0 0 0 0 0 0 OSTS2 OSTS1 OSTS0 OSTS2 OSTS1 OSTS0 Oscillation stabilization time selection Clock fXX 20 MHz 0 0 0 0 1 0 0 1 1 0 Other than above 0 1 0 1 0 Note 12.58 MHz 14 819.2 s 1.3 ms 16 3.3 ms 5.2 ms 17 6.6 ms 10.4 ms 13.1 ms 20.8 ms 26.2 ms 41.6 ms 2 /fXX 2 /fXX 2 /fXX 18 2 /fXX 19 2 /fXX (after reset) Setting prohibited Note Only in the V850/SB1. Caution The wait time at the release of the STOP mode does not include the time ("a" in the figure below) until clock oscillation starts after releasing the STOP mode when RESET is input or an interrupt is generated. STOP mode release Voltage waveform at X1 pin Vss a User's Manual U13850EJ6V0UD 267 CHAPTER 10 SERIAL INTERFACE FUNCTION 10.1 Overview The V850/SB1 and V850/SB2 incorporate the following serial interfaces. * 2 Channel 0: 3-wire serial I/O (CSI0)/I C0 Note * Channel 1: 3-wire serial I/O (CSI1)/Asynchronous serial interface (UART0) * Channel 2: 3-wire serial I/O (CSI2)/I C1 2 Note * Channel 3: 3-wire serial I/O (CSI3)/Asynchronous serial interface (UART1) * Channel 4: 8 to 16-bit variable-length 3-wire serial I/O (CSI4) 2 2 2 Note I C0 and I C1 support multimasters (Y versions (products with on-chip I C) only). 2 Either 3-wire serial I/O or I C can be used as a serial interface. 10.2 3-Wire Serial I/O (CSI0 to CSI3) CSIn (n = 0 to 3) has the following two modes. (1) Operation stop mode This mode is used when serial transfers are not performed. (2) 3-wire serial I/O mode (fixed to MSB first) This is an 8-bit data transfer mode using three lines: a serial clock line (SCKn), serial output line (SOn), and serial input line (SIn). Since simultaneous transmit and receive operations are enabled in 3-wire serial I/O mode, the processing time for data transfer is reduced. The first bit in the 8-bit data in serial transfers is fixed to the MSB. The SCK0 to SCK3 pins are set to normal output or N-ch open-drain output by setting the port 1 function register (PF1) and port 2 function register (PF2). 3-wire serial I/O mode is useful for connection to a peripheral I/O device that includes a clocked serial interface, a display controller, etc. 268 User's Manual U13850EJ6V0UD CHAPTER 10 SERIAL INTERFACE FUNCTION 10.2.1 Configuration CSIn includes the following hardware. Table 10-1. Configuration of CSIn Item Configuration Registers Serial I/O shift registers 0 to 3 (SIO0 to SIO3) Control registers Serial operation mode registers 0 to 3 (CSIM0 to CSIM3) Serial clock selection registers 0 to 3 (CSIS0 to CSIS3) Figure 10-1. Block Diagram of 3-Wire Serial I/O Internal bus 8 Serial I/O shift register n (SIOn) SIn SOn SCKn Serial clock counter Interrupt generator Serial clock controller Selector INTCSIn TMx output Clock selection Remarks 1. n = 0 to 3 2. TMx output is as follows: When n = 0 or 3: TM2 When n = 1 or 2: TM3 (1) Serial I/O shift registers 0 to 3 (SIO0 to SIO3) SIOn is an 8-bit register that performs parallel-serial conversion and serial transmission/reception (shift operations) synchronized with the serial clock. SIOn is set by an 8-bit memory manipulation instruction. When "1" is set to bit 7 (CSIEn) of serial operation mode register n (CSIMn), a serial operation can be started by writing data to or reading data from SIOn. When transmitting, data written to SIOn is output via the serial output (SOn). When receiving, data is read from the serial input (SIn) and written to SIOn. RESET input clears these registers to 00H. Caution Do not execute SIOn accesses except for accesses that become the transfer start trigger during a transfer operation (read is disabled when MODE = 0 and write is disabled when MODE = 1). User's Manual U13850EJ6V0UD 269 CHAPTER 10 SERIAL INTERFACE FUNCTION 10.2.2 CSIn control registers CSIn is controlled by the following registers. * Serial operation mode register n (CSIMn) * Serial clock selection register n (CSISn) (1) Serial clock selection registers 0 to 3 (CSIS0 to CSIS3) and serial operation mode registers 0 to 3 (CSIM0 to CSIM3) The CSISn register is used to set serial interface channel n's serial clock. The CSISn register can be set by an 8-bit memory manipulation instruction. RESET input clears the CSISn register to 00H. The CSIMn register is used to enable or disable serial interface channel n's serial clock, operation modes, and specific operations. The CSIMn register can be set by an 8-bit or 1-bit memory manipulation instruction. RESET input clears the CSIMn register to 00H. 270 User's Manual U13850EJ6V0UD CHAPTER 10 After reset : 00H CSISn R/W SERIAL INTERFACE FUNCTION Address: CSIS0 CSIS1 FFFFF2A4H FFFFF2B4H CSIS2 CSIS3 FFFFF2C4H FFFFF2D4H 7 6 5 4 3 2 1 0 0 0 0 0 0 0 0 SCLn2 (n = 0 to 3) After reset: CSIMn 00H R/W Address: CSIM0 CSIM1 FFFFF2A2H FFFFF2B2H CSIM2 CSIM3 FFFFF2C2H FFFFF2D2H <7> 6 5 4 3 2 1 0 CSIEn 0 0 0 0 MODEn SCLn1 SCLn0 (n = 0 to 3) SIOn operation enable/disable specification CSIEn Shift register operation Serial counter 0 Operation disable Clear Port function 1 Operation enable Count operation enable Serial function + port functionNote 2 MODEn Transfer operation mode flag Operation mode Notes 1. Port Note 1 Transfer start trigger SOn output 0 Transmit/receive mode SIOn write Normal output 1 Receive-only mode SIOn read Port function SCLn2 SCLn1 SCLn0 Clock selection 0 0 0 External clock input (SCKn) 0 0 1 at n = 0, 3: Output of TO2 at n = 1, 2: Output of TO3 0 1 0 fXX/8 0 1 1 fXX/16 1 0 0 Setting prohibited 1 0 1 Setting prohibited 1 1 0 fXX/32 1 1 1 fXX/64 The SIn, SOn, and SCKn pins are used as port function pins when CSIEn = 0 (SIOn operation stop status). 2. When CSIEn = 1 (SIOn operation enable status), the port function is available for the SIn pin when only using the transmit function and SOn pin when only using the receive function. Cautions 1. Do not perform bit manipulation of SCLn1 and SCLn0. 2. Be sure to set bits 6 to 3 of the CSIMn register to 0. Remark When the output of the timer is selected as the clock, it is not necessary to set the P26/TO2/TI2 and P27/TO3/TI3 pins in the timer output mode. User's Manual U13850EJ6V0UD 271 CHAPTER 10 SERIAL INTERFACE FUNCTION 10.2.3 Operations CSIn has the following two operation modes. * Operation stop mode * 3-wire serial I/O mode (1) Operation stop mode Serial transfers are not performed in this mode, enabling a reduction in power consumption. In operation stop mode, if SIn, SOn, and SCKn pin are also used as I/O ports, they can be used as normal I/O ports as well. (a) Register settings Operation stop mode is set via the CSIEn bit of serial operation mode register n (CSIMn). Figure 10-2. CSIMn Setting (Operation Stop Mode) After reset : 00H CSIMn R/W Address: CSIM0 CSIM1 CSIM2 CSIM3 FFFFF2A2H FFFFF2B2H FFFFF2C2H FFFFF2D2H 7 6 5 4 3 2 1 0 CSIEn 0 0 0 0 MODEn SCLn1 SCLn0 (n = 0 to 3) SIOn operation enable/disable specification CSIEn Shift register operation 0 272 Operation disable Serial counter Clear User's Manual U13850EJ6V0UD Port Port function CHAPTER 10 SERIAL INTERFACE FUNCTION (2) 3-wire serial I/O mode 3-wire serial I/O mode is useful when connecting to a peripheral I/O device that includes a clocked serial interface, a display controller, etc. This mode executes data transfers via three lines: a serial clock line (SCKn), serial output line (SOn), and serial input line (SIn). (a) Register settings 3-wire serial I/O mode is set via serial operation mode register n (CSIMn). Figure 10-3. CSIMn Setting (3-Wire Serial I/O Mode) After reset : 00H CSIMn R/W Address: CSIM0 CSIM1 CSIM2 CSIM3 FFFFF2A2H FFFFF2B2H FFFFF2C2H FFFFF2D2H 7 6 5 4 3 2 1 0 CSIEn 0 0 0 0 MODEn SCLn1 SCLn0 (n = 0 to 3) SIOn operation enable/disable specification CSIEn Shift register operation 1 Serial counter Operation enable Count operation enable MODEn Serial function + port function Transfer operation mode flag Operation mode Transfer start trigger SOn output 0 Transmit/receive mode Write to SIOn Normal output 1 Receive-only mode Read from SIOn Port function SCLn2 SCLn1 SCLn0 0 0 0 External clock input (SCKn) 0 0 1 When n = 0, 3: TO2 When n = 1, 2: TO3 0 1 0 fXX/8 0 1 1 fXX/16 1 0 0 Setting prohibited 1 0 1 Setting prohibited 1 1 0 fXX/32 1 1 1 fXX/64 Remark Port Clock selection Refer to 10.2.2 (1) Serial clock selection registers 0 to 3 (CSIS0 to CSIS3) and serial operation mode registers 0 to 3 (CSIM0 to CSIM3) for the SCLn2 bit. User's Manual U13850EJ6V0UD 273 CHAPTER 10 SERIAL INTERFACE FUNCTION (b) Communication operations In 3-wire serial I/O mode, data is transmitted and received in 8-bit units. Each bit of data is sent or received in synchronization with the serial clock. Serial I/O shift register n (SIOn) is shifted in synchronization with the falling edge of the serial clock. Transmission data is held in the SOn latch and is output from the SOn pin. Data that is received via the SIn pin in synchronization with the rising edge of the serial clock is latched to SIOn. Completion of an 8-bit transfer automatically stops operation of SIOn and sets the interrupt request flag (INTCSIn). Figure 10-4. Timing of 3-Wire Serial I/O Mode Serial clock 1 2 3 4 5 6 7 8 SI0 DI7 DI6 DI5 DI4 DI3 DI2 DI1 DI0 SO0 DO7 DO6 DO5 DO4 DO3 DO2 DO1 DO0 INTCSIn Transfer completion Transfer starts in synchronization with the serial clock's falling edge (c) Transfer start A serial transfer starts when the following two conditions have been satisfied and transfer data has been set to serial I/O shift register n (SIOn). * The SIOn operation control bit (CSIEn) = 1 * After an 8-bit serial transfer, the internal serial clock is either stopped or is set to high level. Transfer data is set to SIOn as follows. * Transmit/receive mode When CSIEn = 1 and MODEn = 0, transfer starts when writing to SIOn. * Receive-only mode When CSIEn = 1 and MODEn = 1, transfer starts when reading from SIOn. Caution After data has been written to SIOn, transfer will not start even if the CSIEn bit value is set to "1". Completion of an 8-bit transfer automatically stops the serial transfer operation and sets the interrupt request flag (INTCSIn). 274 User's Manual U13850EJ6V0UD CHAPTER 10 SERIAL INTERFACE FUNCTION 2 10.3 I C Bus (A Versions) 2 To use the I C bus function, set the P10/SDA0, P12/SCL0, P20/SDA1, and P22/SCL1 pins to N-ch open drain output. 2 The products with an on-chip I C bus are shown below. * V850/SB1: PD703031AY, 703032AY, 703033AY, 70F3032AY, 70F3033AY * V850/SB2: PD703034AY, 703035AY, 703037AY, 70F3035AY, 70F3037AY 2 2 The I C0 and I C1 have the following two modes. * Operation stop mode 2 * I C (Inter IC) bus mode (multimasters supported) (1) Operation stop mode This mode is used when serial transfers are not performed. It can therefore be used to reduce power consumption. 2 (2) I C bus mode (multimaster support) This mode is used for 8-bit data transfers with several devices via two lines: a serial clock (SCLn) line and a serial data bus (SDAn) line. 2 This mode complies with the I C bus format and the master device can output "start condition", "data", and "stop condition" data to the slave device, via the serial data bus. The slave device automatically detects these 2 received data by hardware. This function can simplify the part of an application program that controls the I C bus. 2 Since SCLn and SDAn are open drain outputs, the I Cn requires pull-up resistors for the serial clock line and the serial data bus line. Remark n = 0, 1 User's Manual U13850EJ6V0UD 275 CHAPTER 10 SERIAL INTERFACE FUNCTION 2 Figure 10-5. Block Diagram of I C Internal bus IIC status register n (IICSn) MSTSn ALDn EXCn COIn TRCn ACKDn STDn SPDn IIC control register n (IICCn) Slave address register n (SVAn) SDAn IICEn LRELn WRELn SPIEn WTIMn ACKEn STTn Match signal Noise eliminator IIC shift register n (IICn) CLEAR SET SO latch DQ CL1, CL0 Data hold time correction circuit N-ch opendrain output SPTn ACK detector Wakeup controller ACK detector Start condition detector Stop condition detector SCLn Noise eliminator Interrupt request signal generator Serial clock counter INTIICn Serial clock wait controller Serial clock controller N-ch opendrain output fXX Prescaler TMx output CLDn DADn SMCn DFCn CLn1 CLn0 CLXn IIC clock selection register n (IICCLn) Internal bus Remarks 1. n = 0, 1 2. TMx output n = 0: TM2 output n = 1: TM3 output 276 User's Manual U13850EJ6V0UD IICCEn1 IICCEn0 IIC function expansion register n (IICXn) IIC clock expansion register n (IICCEn) CHAPTER 10 SERIAL INTERFACE FUNCTION A serial bus configuration example is shown below. 2 Figure 10-6. Serial Bus Configuration Example Using I C Bus +VDD +VDD Master CPU1 SDA Slave CPU1 Address 1 SCL Serial data bus Serial clock User's Manual U13850EJ6V0UD SDA Master CPU2 Slave CPU2 SCL Address 2 SDA Slave CPU3 SCL Address 3 SDA Slave IC SCL Address 4 SDA Slave IC SCL Address N 277 CHAPTER 10 SERIAL INTERFACE FUNCTION 10.3.1 Configuration 2 I Cn includes the following hardware (n = 0, 1). 2 Table 10-2. Configuration of I Cn Item (1) Configuration Registers IIC shift registers 0 and 1 (IIC0, IIC1) Slave address registers 0 and 1 (SVA0, SVA1) Control registers IIC control registers 0 and 1 (IICC0, IICC1) IIC status registers 0 and 1 (IICS0, IICS1) IIC clock selection registers 0 and 1 (IICCL0, IICCL1) IIC clock expansion registers 0 and 1 (IICCE0, IICCE1) IICC function expansion registers 0 and 1 (IICX0, IICX1) IIC shift registers 0 and 1 (IIC0, IIC1) IICn is used to convert 8-bit serial data into 8-bit parallel data and vice versa. IICn can be used for both transmission and reception (n = 0, 1). Write and read operations to IICn are used to control the actual transmit and receive operations. IICn is set by an 8-bit memory manipulation instruction. RESET input clears IIC0 and IIC1 to 00H. (2) Slave address registers 0 and 1 (SVA0, SVA1) SVAn sets local addresses when in slave mode. SVAn is set by an 8-bit memory manipulation instruction (n = 0, 1). RESET input clears SVA0 and SVA1 to 00H. (3) SO latch The SO latch is used to retain the SDAn pin's output level (n = 0, 1). (4) Wakeup controller This circuit generates an interrupt request when the address received by this register matches the address value set to slave address register n (SVAn) or when an extension code is received (n = 0, 1). (5) Clock selector This selects the sampling clock to be used. (6) Serial clock counter This counter counts the serial clocks that are output and the serial clocks that are input during transmit/receive operations and is used to verify that 8-bit data was sent or received. 278 User's Manual U13850EJ6V0UD CHAPTER 10 SERIAL INTERFACE FUNCTION (7) Interrupt request signal generator This circuit controls the generation of interrupt request signals (INTIICn). 2 An I C interrupt is generated following either of two triggers. * Eighth or ninth clock of the serial clock (set by WTIMn bit) * Interrupt request generated when a stop condition is detected (set by SPIEn bit) Remarks 1. n = 0, 1 2. WTIMn bit: Bit 3 of IIC control register n (IICCn) SPIEn bit: Bit 4 of IIC control register n (IICCn) (8) Serial clock controller In master mode, this circuit generates the clock output via the SCLn pin from a sampling clock (n = 0, 1). (9) Serial clock wait controller This circuit controls the wait timing. (10) ACK output circuit, stop condition detector, start condition detector, and ACK detector These circuits are used to output and detect various control signals. (11) Data hold time correction circuit This circuit generates the hold time for data corresponding to the falling edge of the serial clock. User's Manual U13850EJ6V0UD 279 CHAPTER 10 SERIAL INTERFACE FUNCTION 2 10.3.2 I C control registers 2 2 I C0 and I C1 are controlled by the following registers. * IIC control registers 0, 1 (IICC0, IICC1) * IIC status registers 0, 1 (IICS0, IICS1) * IIC clock selection registers 0, 1 (IICCL0, IICCL1) * IIC clock expansion registers 0, 1 (IICCE0, IICCE1) * IIC function expansion registers 0, 1 (IICX0, IICX1) The following registers are also used. * IIC shift registers 0, 1 (IIC0, IIC1) * Slave address registers 0, 1 (SVA0, SVA1) (1) IIC control registers 0, 1 (IICC0, IICC1) 2 2 IICCn is used to enable/disable I C operations, set wait timing, and set other I C operations. IICCn can be set by an 8-bit or 1-bit memory manipulation instruction (n = 0, 1). RESET input clears IICCn to 00H. Caution 2 2 In I C0, I C1 bus mode, set the port 1 mode register (PM1), port 2 mode register (PM2), port 1 function register (PF1), and port 2 function register (PF2) as follows. In addition, set each output latch to 0. Pin 280 Port Mode Register Port Function Register P10/SI0/SDA0 PM10 of PM1 register = 0 PF10 of PF1 register = 1 P12/SCK0/SCL0 PM12 of PM1 register = 0 PF12 of PF1 register = 1 P20/SI2/SDA1 PM20 of PM2 register = 0 PF20 of PF2 register = 1 P22/SCK2/SCL1 PM22 of PM2 register = 0 PF22 of PF2 register = 1 User's Manual U13850EJ6V0UD CHAPTER 10 SERIAL INTERFACE FUNCTION (1/4) After reset: 00H IICCn R/W Address: FFFFF340H, FFFFF350H <7> <6> <5> <4> <3> <2> <1> <0> IICEn LRELn WRELn SPIEn WTIMn ACKEn STTn SPTn (n = 0, 1) I2Cn operation enable/disable specification IICEn 0 Operation stopped. IIC status register n (IICSn) preset. Internal operation stopped. 1 Enables operation. Condition for clearing (IICEn = 0) Condition for setting (IICEn = 1) * Cleared by instruction * When RESET is input * Set by instruction LRELn Exit from communications 0 Normal operation 1 This exits from the current communications operation and sets standby mode. This setting is automatically cleared after being executed. Its uses include cases in which a locally irrelevant extension code has been received. The SCLn and SDAn lines are set to high impedance. The following flags are cleared. * STDn * ACKDn * TRCn * COIn * EXCn * MSTSn * STTn * SPTn The standby mode following exit from communications remains in effect until the following communications entry conditions are met. * After a stop condition is detected, restart is in master mode. * An address match or extension code reception occurs after the start condition. Note Condition for clearing (LRELn = 0) Condition for setting (LRELn = 1) * Automatically cleared after execution * When RESET is input * Set by instruction Note This flag's signal is invalid when IICEn = 0. Remark STDn: ACKDn: Bit 1 of IIC state register n (IICSn) Bit 2 of IIC state register n (IICSn) TRCn: Bit 3 of IIC state register n (IICSn) COIn: Bit 4 of IIC state register n (IICSn) EXCn: Bit 5 of IIC state register n (IICSn) MSTSn: Bit 7 of IIC state register n (IICSn) User's Manual U13850EJ6V0UD 281 CHAPTER 10 SERIAL INTERFACE FUNCTION (2/4) WRELn Wait cancellation control 0 Do not cancel wait 1 Cancel wait. This setting is automatically cleared after wait is canceled. Note Condition for clearing (WRELn = 0) Condition for setting (WRELn = 1) * Automatically cleared after execution * When RESET is input * Set by instruction SPIEn Enable/disable generation of interrupt request when stop condition is detected 0 Disabled 1 Enabled Note Condition for clearing (SPIEn = 0) Condition for setting (SPIEn = 1) * Cleared by instruction * When RESET is input * Set by instruction WTIMn Control of wait and interrupt request generation 0 Interrupt request is generated at the eighth clock's falling edge. Master mode: After output of eight clocks, clock output is set to low level and wait is set. Slave mode: After input of eight clocks, the clock is set to low level and wait is set for the master device. 1 Interrupt request is generated at the ninth clock's falling edge. Master mode: After output of nine clocks, clock output is set to low level and wait is set. Slave mode: After input of nine clocks, the clock is set to low level and wait is set for the master device. This bit's setting is invalid during an address transfer and is valid as the transfer is completed. When in master mode, a wait is inserted at the falling edge of the ninth clock during address transfers. For a slave device that has received a local address, a wait is inserted at the falling edge of the ninth clock after an ACK signal is issued. When the slave device has received an extension code, a wait is inserted at the falling edge of the eighth clock. Note Condition for clearing (WTIMn = 0) Condition for setting (WTIMn = 1) * Cleared by instruction * When RESET is input * Set by instruction Note This flag's signal is invalid when IICEn = 0. Remark 282 n = 0, 1 User's Manual U13850EJ6V0UD CHAPTER 10 SERIAL INTERFACE FUNCTION (3/4) ACKEn Acknowledge control 0 Disable acknowledgment. 1 Enable acknowledgment. During the ninth clock period, the SDA line is set to low level. However, the ACK is invalid during address transfers and is valid when EXCn = 1. Note Condition for clearing (ACKEn = 0) Condition for setting (ACKEn = 1) * Cleared by instruction * When RESET is input * Set by instruction STTn Start condition trigger 0 Do not generate a start condition. 1 When bus is released (in STOP mode): Generate a start condition (for starting as master). The SDAn line is changed from high level to low level and then the start condition is generated. Next, after the rated amount of time has elapsed, SCLn is changed to low level. When bus is not used: This trigger functions as a start condition reserve flag. When set, it releases the bus and then automatically generates a start condition. In the wait state (when master device) Generate a restart condition after releasing the wait. Cautions concerning set timing * For master reception: Cannot be set during transfer. Can be set only when ACKEn has been set to 0 and slave has been notified of final reception. * For master transmission: A start condition cannot be generated normally during the ACKn period. Set during the wait period. * Cannot be set at the same time as SPTn Condition for clearing (STTn = 0) Condition for setting (STTn = 1) * Cleared by instruction * Cleared by loss in arbitration * Cleared after start condition is generated by master device * When LRELn = 1 * When IICEn = 0 * Cleared when RESET is input * Set by instruction Note This flag's signal is invalid when IICEn = 0. Remark Bit 1 (STTn) is 0 if it is read immediately after data setting. User's Manual U13850EJ6V0UD 283 CHAPTER 10 SERIAL INTERFACE FUNCTION (4/4) SPTn Stop condition trigger 0 Stop condition is not generated. 1 Stop condition is generated (termination of master device's transfer). After the SDAn line goes to low level, either set the SCLn line to high level or wait until it goes to high level. Next, after the rated amount of time has elapsed, the SDAn line is changed from low level to high level and a stop condition is generated. Cautions concerning setting timing * For master reception: Cannot be set during transfer. Can be set only when ACKEn has been set to 0 and during the wait period after slave has been notified of final reception. * For master transmission: A stop condition cannot be generated normally during the ACKn period. Set during the wait period. * Cannot be set at the same time as STTn. * SPTn can be set only when in master modeNote * When WTIMn has been set to 0, if SPTn is set during the wait period that follows output of eight clocks, note that a stop condition will be generated during the high-level period of the ninth clock. When a ninth clock must be output, WTIMn should be changed from 0 to 1 during the wait period following output of eight clocks, and SPTn should be set during the wait period that follows output of the ninth clock. Condition for clearing (SPTn = 0) Condition for setting (SPTn = 1) * Cleared by instruction * Cleared by loss in arbitration * Automatically cleared after stop condition is detected * When LRELn = 1 * When IICEn = 0 * Cleared when RESET is input * Set by instruction Note Set SPTn only in master mode. However, SPTn must be set and a stop condition generated before the first stop condition is detected following the switch to operation enable status. For details, see 10.3.13 Cautions. Caution When bit 3 (TRCn) of IIC status register n (IICSn) is set to 1, WRELn is set during the ninth clock and wait is canceled, after which TRCn is cleared and the SDAn line is set to high impedance. Remarks 1. Bit 0 (SPTn) is 0 if it is read immediately after data setting. 2. n = 0, 1 284 User's Manual U13850EJ6V0UD CHAPTER 10 SERIAL INTERFACE FUNCTION (2) IIC status registers 0, 1 (IICS0, IICS1) 2 IICSn indicates the status of the I Cn bus. IICSn can be set by an 8-bit or 1-bit memory manipulation instruction. IICSn is a read-only register (n = 0, 1). RESET input sets IICSn to 00H. (1/3) After reset: 00H IICSn R Address: FFFFF342H, FFFFF352H <7> <6> <5> <4> <3> <2> <1> <0> MSTSn ALDn EXCn COIn TRCn ACKDn STDn SPDn (n = 0, 1) MSTSn Master device status 0 Slave device status or communication standby status 1 Master device communication status Condition for clearing (MSTSn = 0) Condition for setting (MSTSn = 1) * When a stop condition is detected * When ALDn = 1 * Cleared by LRELn = 1 * When IICEn changes from 1 to 0 * When RESET is input * When a start condition is generated ALDn Detection of arbitration loss 0 This status means either that there was no arbitration or that the arbitration result was a "win". 1 This status indicates the arbitration result was a "loss". MSTSn is cleared. Condition for clearing (ALDn = 0) Condition for setting (ALDn = 1) Note * Automatically cleared after IICSn is read * When the arbitration result is a "loss". * When IICEn changes from 1 to 0 * When RESET is input Note This register is also cleared when a bit manipulation instruction is executed for bits other than IICSn. Remark LRELn: Bit 6 of IIC control register n (IICCn) IICEn: Bit 7 of IIC control register n (IICCn) User's Manual U13850EJ6V0UD 285 CHAPTER 10 SERIAL INTERFACE FUNCTION (2/3) EXCn Detection of extension code reception 0 Extension code was not received. 1 Extension code was received. Condition for clearing (EXCn = 0) Condition for setting (EXCn = 1) * When a start condition is detected * When a stop condition is detected * Cleared by LRELn = 1 * When IICEn changes from 1 to 0 * When RESET is input * When the higher four bits of the received address data are either "0000" or "1111" (set at the rising edge of the eighth clock). COIn Detection of matching addresses 0 Addresses do not match. 1 Addresses match. Condition for clearing (COIn = 0) Condition for setting (COIn = 1) * When a start condition is detected * When a stop condition is detected * Cleared by LRELn = 1 * When IICEn changes from 1 to 0 * When RESET is input * When the received address matches the local address (SVAn) (set at the rising edge of the eighth clock). TRCn Detection of transmit/receive status 0 Receive status (other than transmit status). The SDAn line is set to high impedance. 1 Transmit status. The value in the SO latch is enabled for output to the SDAn line (valid starting at the falling edge of the first byte's ninth clock). Condition for clearing (TRCn = 0) Condition for setting (TRCn = 1) * When a stop condition is detected * Cleared by LRELn = 1 * When IICEn changes from 1 to 0 * Cleared by WRELn = 1Note * When ALDn changes from 0 to 1 * When RESET is input Master * When "1" is output to the first byte's LSB (transfer direction specification bit) Slave * When a start condition is detected When not used for communication Master * When a start condition is generated Slave * When "1" is input by the first byte's LSB (transfer direction specification bit) Note TRCn is cleared and SDAn line become high impedance when bit 5 (WRELn) of IIC control register n (IICCn) is set and the wait state is released at the ninth clock with bit 3 (TRCn) of IIC status register n (IICSn) = 1. Remarks 1. WRELn: Bit 5 of IIC control register n (IICCn) 2. 286 LRELn: Bit 6 of IIC control register n (IICCn) IICEn: Bit 7 of IIC control register n (IICCn) n = 0, 1 User's Manual U13850EJ6V0UD CHAPTER 10 SERIAL INTERFACE FUNCTION (3/3) ACKDn Detection of ACK 0 ACK was not detected. 1 ACK was detected. Condition for clearing (ACKDn = 0) Condition for setting (ACKD = 1) * When a stop condition is detected * At the rising edge of the next byte's first clock * Cleared by LRELn = 1 * When IICEn changes from 1 to 0 * When RESET is input * After the SDAn line is set to low level at the rising edge of the SCLn's ninth clock STDn Detection of start condition 0 Start condition was not detected. 1 Start condition was detected. This indicates that the address transfer period is in effect Condition for clearing (STDn = 0) Condition for setting (STDn = 1) * When a stop condition is detected * At the rising edge of the next byte's first clock following address transfer * Cleared by LRELn = 1 * When IICEn changes from 1 to 0 * When RESET is input When a start condition is detected SPDn Detection of stop condition 0 Stop condition was not detected. 1 Stop condition was detected. The master device's communication is terminated and the bus is released. Condition for clearing (SPDn = 0) Condition for setting (SPDn = 1) * At the rising edge of the address transfer byte's first clock following setting of this bit and detection of a start condition * When IICEn changes from 1 to 0 * When RESET is input When a stop condition is detected Remarks 1. LRELn: Bit 6 of IIC control register n (IICCn) IICEn: Bit 7 of IIC control register n (IICCn) 2. n = 0, 1 User's Manual U13850EJ6V0UD 287 CHAPTER 10 SERIAL INTERFACE FUNCTION (3) IIC clock selection registers 0, 1 (IICCL0, IICCL1) 2 IICCLn is used to set the transfer clock for the I Cn bus. IICCLn can be set by an 8-bit or 1-bit memory manipulation instruction. Bits SMCn, CLn1 and CLn0 are set using the CLXn bit of IIC function expansion register n (IICXn) in combination with bits IICCEn1 and IICCEn0 of 2 IIC clock expansion register n (IICCEn) (n = 0, 1) (see 10.3.2 (6) I Cn transfer clock setting method). RESET input clears IICCLn to 00H. Note After reset: 00H IICCLn R/W Address: FFFFF344H, FFFFF354H 7 6 <5> <4> 3 2 1 0 0 0 CLDn DADn SMCn DFCn CLn1 CLn0 (n = 0, 1) CLDn Detection of SCLn line level (valid only when IICEn = 1) 0 SCLn line was detected at low level. 1 SCLn line was detected at high level. Condition for clearing (CLDn = 0) Condition for setting (CLDn = 1) * When the SCLn line is at low level * When IICEn = 0 * When RESET is input * When the SCLn line is at high level DADn Detection of SDAn line level (valid only when IICEn = 1) 0 SDAn line was detected at low level. 1 SDAn line was detected at high level. Condition for clearing (DADn = 0) Condition for setting (DADn = 1) * When the SDAn line is at low level * When IICEn = 0 * When RESET is input * When the SDAn line is at high level SMCn Operation mode switching 0 Operates in standard mode. 1 Operates in high-speed mode. DFCn Digital filter operation control 0 Digital filter off. 1 Digital filter on. A digital filter can be used only in high-speed mode. In high-speed mode, the transfer clock does not vary regardless of DFCn switching (on/off). Note Bits 4 and 5 are read only bits. Caution Be sure to set bits 7 and 6 to 0. Remark 288 IICEn: Bit 7 of IIC control register n (IICCn) User's Manual U13850EJ6V0UD CHAPTER 10 SERIAL INTERFACE FUNCTION (4) IIC function expansion registers 0, 1 (IICX0, IICX1) 2 These registers set the function expansion of I Cn (valid only in high-speed mode). IICXn is set with a 1-bit or 8-bit memory manipulation instruction. Set the CLXn bit in combination with the SMCn, DFCn, CLn1, and the CLn0 bits of IIC clock selection register n (IICCLn) and the IICCEn1 and IICCEn0 2 bits of IIC clock expansion register n (IICCEn) (see 10.3.2 (6) I Cn transfer clock setting method) (n = 0, 1). RESET input clears these registers to 00H. After reset: 00H IICXn R/W Address: FFFFF34AH, FFFFF35AH 7 6 5 4 3 2 1 <0> 0 0 0 0 0 0 0 CLXn (n = 0, 1) (5) IIC clock expansion registers 0, 1 (IICCE0, IICCE1) 2 These registers set the transfer clock expansion of I Cn. IICCEn is set with an 8-bit memory manipulation instruction. Set the IICCEn1 and IICCEn0 bits in combination with the SMCn, CLn1, and CLn0 bits of IIC clock selection register n (IICCLn) and the CLXn bit of IIC function 2 expansion register n (IICXn) (see 10.3.2 (6) I Cn transfer clock setting method) (n = 0, 1). RESET input clears these registers to 00H. After reset: 00H IICCEn R/W Address: FFFFF34CH, FFFFF35CH 7 6 5 4 3 2 1 0 0 0 0 0 0 0 IICCEn1 IICCEn0 (n = 0, 1) 2 (6) I Cn transfer clock setting method 2 The I Cn transfer clock frequency (fSCL) is calculated using the following expression (n = 0, 1). fSCL = 1/(m x T + tR + tF) m = 12, 24, 48, 36, 54, 44, 86, 172, 132, 198 (see Table 10-3 Selection Clock Setting.) T: 1/fXX tR: SCLn rise time tF : SCLn fall time 2 For example, the I Cn transfer clock frequency (fSCL) when fXX = 20 MHz, m = 198, tR = 200 ns, and tF = 50 ns is calculated using following expression. fSCL = 1/(198 x 50 ns + 200 ns + 50 ns) 98.5 kHz User's Manual U13850EJ6V0UD 289 CHAPTER 10 SERIAL INTERFACE FUNCTION m x T + tR + tF tR tF m/2 x T m/2 x T SCLn SCLn inversion SCLn inversion SCLn inversion The selection clock is set using a combination of the SMCn, CLn1, and CLn0 bits of IIC clock selection register n (IICCLn), the CLXn bit of IIC function expansion register n (IICXn), and IICCEn1 and the IICCEn0 bits of IIC clock expansion register n (IICCEn) (n = 0, 1). Table 10-3. Selection Clock Setting IICCEn Bit 1 Bit 0 IICCEn1 IICCEn0 IICXn IICCLn Bit 0 Bit 3 Bit 1 Bit 0 CLXn SMCn CLn1 CLn0 Selection Clock (fXX/m) Settable Main Clock Frequency (fXX) Range x x 1 1 0 x fXX/12 4.0 MHz to 4.19 MHz x x 0 1 0 x fXX/24 4.0 MHz to 8.38 MHz x x 0 1 1 0 fXX/48 8.0 MHz to 16.67 MHz 0 1 0 1 1 1 fXX/36 12.0 MHz to 13.4 MHz 1 0 0 1 1 1 fXX/54 16.0 MHz to 20.0 MHzNote 0 0 0 1 1 1 n=0 TM2 output/18 TM2 setting n=1 TM3 output/18 TM3 setting x x 0 0 0 0 fXX/44 2.0 MHz to 4.19 MHz x x 0 0 0 1 fXX/86 4.19 MHz to 8.38 MHz x x 0 0 1 0 fXX/172 8.38 MHz to 16.67 MHz 0 1 0 0 1 1 fXX/132 12.0 MHz to 13.4 MHz 1 0 0 0 1 1 fXX/198 16.0 MHz to 20.0 MHzNote 0 0 0 0 1 1 n=0 TM2 output/66 TM2 setting n=1 TM3 output/66 TM3 setting Other than above Operation Mode High-speed mode (SMCn = 1) Normal mode (SMCn = 0) Setting prohibited Note Only in the V850/SB1 and the H versions of the V850/SB2. Remarks 1. n = 0, 1 2. x: don't care 3. When the output of the timer is selected as the clock, it is not necessary to set the P26/TO2/TI2 and P27/TO3/TI3 pins in the timer output mode. 290 User's Manual U13850EJ6V0UD CHAPTER 10 SERIAL INTERFACE FUNCTION (7) IIC shift registers 0, 1 (IIC0, IIC1) IICn is used for serial transmission/reception (shift operations) that is synchronized with the serial clock. It can be read from or written to in 8-bit units, but data should not be written to IICn during a data transfer (n = 0, 1). After reset: 00H R/W 7 Address: FFFFF348H, FFFFF358H 6 5 4 3 2 1 <0> 2 1 0 IICn (n = 0, 1) (8) Slave address registers 0, 1 (SVA0, SVA1) 2 SVAn holds the I C bus's slave addresses. It can be read from or written to in 8-bit units, but bit 0 should be fixed to 0. After reset: 00H R/W 7 Address: FFFFF346H, FFFFF356H 6 5 4 3 SVAn 0 (n = 0, 1) 10.3.3 (1) 2 I C bus mode functions Pin configuration The serial clock pin (SCLn) and serial data bus pin (SDAn) are configured as follows (n = 0, 1). SCLn .............. This pin is used for serial clock input and output. This pin is an N-ch open-drain output for both master and slave devices. Input is Schmitt input. SDAn .............. This pin is used for serial data input and output. This pin is an N-ch open-drain output for both master and slave devices. Input is Schmitt input. Since outputs from the serial clock line and the serial data bus line are N-ch open-drain outputs, an external pull- up resistor is required. User's Manual U13850EJ6V0UD 291 CHAPTER 10 SERIAL INTERFACE FUNCTION Figure 10-7. Pin Configuration Diagram VDD Slave device Master device SCL SCL Clock output (Clock output) VDD (Clock input) Clock input SDA SDA Data output Data output Data input Data input 2 10.3.4 I C bus definitions and control methods 2 2 The following section describes the I C bus's serial data communication format and the signals used by the I C 2 bus. The transfer timing for the "start condition", "data", and "stop condition" output via the I C bus's serial data bus is shown below. 2 Figure 10-8. I C Bus's Serial Data Transfer Timing SCL 1 to 7 8 9 1 to 7 R/W ACK Data 8 9 1 to 7 ACK Data 8 9 SDA Start Address condition ACK Stop condition The master device outputs the start condition, slave address, and stop condition. The acknowledge signal (ACK) can be output by either the master or slave device (normally, it is output by the device that receives 8-bit data). The serial clock (SCLn) is continuously output by the master device. However, in the slave device, the SCLn's low-level period can be extended and a wait can be inserted (n = 0, 1). 292 User's Manual U13850EJ6V0UD CHAPTER 10 (1) SERIAL INTERFACE FUNCTION Start condition The start condition is met when the SCLn pin is at high level and the SDAn pin changes from high level to low level. The start conditions for the SCLn pin and SDAn pin are signals that the master device outputs to the slave device when starting a serial transfer. The slave device includes hardware for detecting start conditions (n = 0, 1). Figure 10-9. Start Condition H SCL SDA A start condition is output when bit 1 (STTn) of IIC control register n (IICCn) is set to 1 after a stop condition has been detected (SPDn: Bit 0 = 1 in the IIC status register n (IICSn)). When a start condition is detected, bit 1 (STDn) of IICSn is set to 1 (n = 0, 1). (2) Address The 7 bits of data that follow the start condition are defined as an address. An address is a 7-bit data segment that is output in order to select one of the slave devices that are connected to the master device via bus lines. Therefore, each slave device connected via the bus lines must have a unique address. The slave devices include hardware that detects the start condition and checks whether or not the 7-bit address data matches the data values stored in slave address register n (SVAn). If the address data matches the SVAn values, the slave device is selected and communicates with the master device until the master device transmits a start condition or stop condition (n = 0, 1). Figure 10-10. Address SCLn 1 2 3 4 5 6 7 8 SDAn AD6 AD5 AD4 AD3 AD2 AD1 AD0 R/W Address 9 Note INTIICn Note INTIICn is generated if a local address or extension code is received during slave device operation. Remark n = 0, 1 User's Manual U13850EJ6V0UD 293 CHAPTER 10 SERIAL INTERFACE FUNCTION The slave address and the eighth bit, which specifies the transfer direction as described in (3) Transfer direction specification below, are written together to the IIC shift register (IICn) and are then output. Received addresses are written to IICn (n = 0, 1). The slave address is assigned to the higher 7 bits of IICn. (3) Transfer direction specification In addition to the 7-bit address data, the master device sends 1 bit that specifies the transfer direction. When this transfer direction specification bit has a value of 0, it indicates that the master device is transmitting data to a slave device. When the transfer direction specification bit has a value of 1, it indicates that the master device is receiving data from a slave device. Figure 10-11. Transfer Direction Specification SCLn 1 2 3 4 5 6 7 8 SDAn AD6 AD5 AD4 AD3 AD2 AD1 AD0 R/W 9 Transfer direction specification Note INTIICn Note INTIICn is generated if a local address or extension code is received during slave device operation. Remark 294 n = 0, 1 User's Manual U13850EJ6V0UD CHAPTER 10 (4) SERIAL INTERFACE FUNCTION Acknowledge signal (ACK) The acknowledge signal (ACK) is used by the transmitting and receiving devices to confirm serial data reception. The receiving device returns one ACK signal for every 8 bits of data it receives. The transmitting device normally receives an ACK signal after transmitting 8 bits of data. However, when the master device is the receiving device, it does not output an ACK signal after receiving the final data to be transmitted. The transmitting device detects whether or not an ACK signal is returned after it transmits 8 bits of data. When an ACK signal is returned, the reception is judged as normal and processing continues. If the slave device does not return an ACK signal, the master device outputs either a stop condition or a restart condition and then stops the current transmission. Failure to return an ACK signal may be caused by the following two factors. (a) Reception was not performed normally. (b) The final data was received. When the receiving device sets the SDAn line to low level during the ninth clock, the ACK signal becomes active (normal receive response). When bit 2 (ACKEn) of IIC control register n (IICCn) is set to 1, automatic ACK signal generation is enabled (n = 0, 1). Transmission of the eighth bit following the 7 address data bits causes bit 3 (TRCn) of IIC status register n (IICSn) to be set. When this TRCn bit's value is 0, it indicates receive mode. Therefore, ACKEn should be set to 1 (n = 0, 1). When the slave device is receiving (when TRCn = 0), if the slave device does not need to receive any more data after receiving several bytes, setting ACKEn to 0 will prevent the master device from starting transmission of the subsequent data. Similarly, when the master device is receiving (when TRCn = 0) and the subsequent data is not needed and when either a restart condition or a stop condition should therefore be output, setting ACKEn to 0 will prevent the ACK signal from being returned. This prevents the MSB data from being output via the SDAn line (i.e., stops transmission) during transmission from the slave device. Figure 10-12. ACK Signal Remark SCLn 1 2 3 4 5 6 7 SDAn AD6 AD5 AD4 AD3 AD2 AD1 AD0 8 9 R/W ACK n = 0, 1 When the local address is received, an ACK signal is automatically output in synchronization with the falling edge of the SCLn's eighth clock regardless of the ACKEn value. No ACK signal is output if the received address is not a local address (n = 0, 1). The ACK signal output method during data reception is based on the wait timing setting, as described below. When 8-clock wait is selected: ACK signal is output at the falling edge of the SCLn's eighth clock if ACKEn is set to 1 before wait cancellation. When 9-clock wait is selected: ACK signal is automatically output at the falling edge of the SCLn's eighth clock if ACKEn has already been set to 1. User's Manual U13850EJ6V0UD 295 CHAPTER 10 (5) SERIAL INTERFACE FUNCTION Stop condition When the SCLn pin is at high level, changing the SDAn pin from low level to high level generates a stop condition (n = 0, 1). A stop condition is a signal that the master device outputs to the slave device when serial transfer has been completed. The slave device includes hardware that detects stop conditions. Figure 10-13. Stop Condition H SCL SDA Remark n = 0, 1 A stop condition is generated when bit 0 (SPTn) of IIC control register n (IICCn) is set to 1. When the stop condition is detected, bit 0 (SPDn) of IIC status register n (IICSn) is set to 1 and INTIICn is generated when bit 4 (SPIEn) of IICCn is set to 1 (n = 0, 1). 296 User's Manual U13850EJ6V0UD CHAPTER 10 (6) SERIAL INTERFACE FUNCTION Wait signal (WAIT) The wait signal (WAIT) is used to notify the communication partner that a device (master or slave) is preparing to transmit or receive data (i.e., is in a wait state). Setting the SCLn pin to low level notifies the communication partner of the wait status. When the wait status has been canceled for both the master and slave devices, the next data transfer can begin (n = 0, 1). Figure 10-14. Wait Signal (1/2) (a) When master device has a nine-clock wait and slave device has an eight-clock wait (master: transmission, slave: reception, and ACKEn = 1) Master Master returns to high impedance but slave is in wait state (low level) IIC0 6 SCL 7 8 Wait after output of ninth clock IIC0 data write (cancel wait) 1 9 2 3 Slave Wait after output of eighth clock FFH is written to IIC0 or WREL is set to 1 IIC0 SCL ACKE H Transfer lines Remark SCL 6 7 8 SDA D2 D1 D0 9 ACK 1 2 3 D7 D6 D5 n = 0, 1 User's Manual U13850EJ6V0UD 297 CHAPTER 10 SERIAL INTERFACE FUNCTION Figure 10-14. Wait Signal (2/2) (b) When master and slave devices both have a nine-clock wait (master: transmission, slave: reception, and ACKEn = 1) Master and slave both wait after output of ninth clock IIC0 data write (cancel wait) Master IIC0 6 SCL 7 8 9 1 2 3 Slave FFH is written to IIC0 or WREL is set to 1 IIC0 SCL ACKE H Transfer lines SCL 6 7 8 9 SDA D2 D1 D0 ACK 1 D7 2 3 D6 D5 Output according to previously set ACKE value Remarks 1. ACKEn: Bit 2 of IIC control register n (IICCn) WRELn: Bit 5 of IIC control register n (IICCn) 2. n = 0, 1 A wait may be automatically generated depending on the setting for bit 3 (WTIMn) of IIC control register n (IICCn) (n = 0, 1). Normally, when bit 5 (WRELn) of IICCn is set to 1 or when FFH is written to IIC shift register n (IICn), the wait status is canceled and the transmitting side writes data to IICn to cancel the wait status. The master device can also cancel the wait status via either of the following methods. * By setting bit 1 (STTn) of IICCn to 1 * By setting bit 0 (SPTn) of IICCn to 1 298 User's Manual U13850EJ6V0UD CHAPTER 10 SERIAL INTERFACE FUNCTION 2 10.3.5 I C interrupt requests (INTIICn) The following shows the value of IIC status register n (IICSn) at the INTIICn interrupt request generation timing and at the INTIICn interrupt timing (n = 0, 1). (1) Master device operation (a) Start ~ Address ~ Data ~ Data ~ Stop (normal transmission/reception) <1> When WTIMn = 0 SPTn = 1 ST AD6 to AD0 RW AK D7 to D0 1 AK D7 to D0 2 AK 3 SP 5 4 1: IICSn = 10XXX110B 2: IICSn = 10XXX000B 3: IICSn = 10XXX000B (WTIMn = 0) 4: IICSn = 10XXXX00B 5: IICSn = 00000001B Remark : Always generated : Generated only when SPIEn = 1 X: don't care n = 0, 1 <2> When WTIMn = 1 SPTn = 1 ST AD6 to AD0 RW AK D7 to D0 1 AK D7 to D0 2 AK SP 3 4 1: IICSn = 10XXX110B 2: IICSn = 10XXX100B 3: IICSn = 10XXXX00B 4: IICSn = 00000001B Remark : Always generated : Generated only when SPIEn = 1 X: don't care n = 0, 1 User's Manual U13850EJ6V0UD 299 CHAPTER 10 SERIAL INTERFACE FUNCTION (b) Start ~ Address ~ Data ~ Start ~ Address ~ Data ~ Stop (restart) <1> When WTIMn = 0 STTn = 1 ST AD6 to AD0 RW AK D7 to D0 1 AK 2 ST SPTn = 1 AD6 to AD0 RW AK 3 D7 to D0 4 AK 5 SP 6 7 1: IICSn = 10XXX110B 2: IICSn = 10XXX000B (WTIMn = 1) 3: IICSn = 10XXXX00B (WTIMn = 0) 4: IICSn = 10XXX110B (WTIMn = 0) 5: IICSn = 10XXX000B (WTIMn = 1) 6: IICSn = 10XXXX00B 7: IICSn = 00000001B Remark : Always generated : Generated only when SPIEn = 1 X: don't care n = 0, 1 <2> When WTIMn = 1 STTn = 1 ST AD6 to AD0 RW AK D7 to D0 AK 1 ST SPTn = 1 AD6 to AD0 2 1: IICSn = 10XXX110B 2: IICSn = 10XXXX00B 3: IICSn = 10XXX110B 4: IICSn = 10XXXX00B 5: IICSn = 00000001B Remark : Always generated : Generated only when SPIEn = 1 X: don't care n = 0, 1 300 User's Manual U13850EJ6V0UD RW AK D7 to D0 3 AK SP 4 5 CHAPTER 10 SERIAL INTERFACE FUNCTION (c) Start ~ Code ~ Data ~ Data ~ Stop (extension code transmission) <1> When WTIMn = 0 SPTn = 1 ST AD6 to AD0 RW AK D7 to D0 1 AK D7 to D0 2 AK 3 SP 4 5 1: IICSn = 1010X110B 2: IICSn = 1010X000B 3: IICSn = 1010X000B (WTIMn = 1) 4: IICSn = 1010XX00B 5: IICSn = 00000001B Remark : Always generated : Generated only when SPIEn = 1 X: don't care n = 0, 1 <2> When WTIMn = 1 SPTn = 1 ST AD6 to AD0 RW AK D7 to D0 1 AK D7 to D0 2 AK SP 3 4 1: IICSn = 1010X110B 2: IICSn = 1010X100B 3: IICSn = 1010XX00B 4: IICSn = 00000001B Remark : Always generated : Generated only when SPIEn = 1 X: don't care n = 0, 1 User's Manual U13850EJ6V0UD 301 CHAPTER 10 SERIAL INTERFACE FUNCTION (2) Slave device operation (when receiving slave address data (match with SVAn)) (a) Start ~ Address ~ Data ~ Data ~ Stop <1> When WTIMn = 0 ST AD6 to AD0 RW AK D7 to D0 1 AK D7 to D0 2 AK SP 4 3 1: IICSn = 0001X110B 2: IICSn = 0001X000B 3: IICSn = 0001X000B 4: IICSn = 00000001B Remark : Always generated : Generated only when SPIEn = 1 X: don't care n = 0, 1 <2> When WTIMn = 1 ST AD6 to AD0 RW AK D7 to D0 1 AK D7 to D0 2 1: IICSn = 0001X110B 2: IICSn = 0001X100B 3: IICSn = 0001XX00B 4: IICSn = 00000001B Remark : Always generated : Generated only when SPIEn = 1 X: don't care n = 0, 1 302 User's Manual U13850EJ6V0UD AK SP 3 4 CHAPTER 10 SERIAL INTERFACE FUNCTION (b) Start ~ Address ~ Data ~ Start ~ Address ~ Data ~ Stop <1> When WTIMn = 0 (after restart, match with SVAn) ST AD6 to AD0 RW AK D7 to D0 1 AK ST AD6 to AD0 RW AK 2 D7 to D0 3 AK SP 4 5 1: IICSn = 0001X110B 2: IICSn = 0001X000B 3: IICSn = 0001X110B 4: IICSn = 0001X000B 5: IICSn = 00000001B Remark : Always generated : Generated only when SPIEn = 1 X: don't care n = 0, 1 <2> When WTIMn = 1 (after restart, match with SVAn) ST AD6 to AD0 RW AK D7 to D0 AK 1 ST AD6 to AD0 2 RW AK D7 to D0 3 AK SP 4 5 1: IICSn = 0001X110B 2: IICSn = 0001XX00B 3: IICSn = 0001X110B 4: IICSn = 0001XX00B 5: IICSn = 00000001B Remark : Always generated : Generated only when SPIEn = 1 X: don't care n = 0, 1 User's Manual U13850EJ6V0UD 303 CHAPTER 10 SERIAL INTERFACE FUNCTION (c) Start ~ Address ~ Data ~ Start ~ Code ~ Data ~ Stop <1> When WTIMn = 0 (after restart, extension code reception) ST AD6 to AD0 RW AK D7 to D0 1 AK ST AD6 to AD0 RW 2 AK D7 to D0 3 AK SP 4 5 1: IICSn = 0001X110B 2: IICSn = 0001X000B 3: IICSn = 0010X010B 4: IICSn = 0010X000B 5: IICSn = 00000001B Remark : Always generated : Generated only when SPIEn = 1 X: don't care n = 0, 1 <2> When WTIMn = 1 (after restart, extension code reception) ST AD6 to AD0 RW AK D7 to D0 AK 1 ST AD6 to AD0 2 1: IICSn = 0001X110B 2: IICSn = 0001XX00B 3: IICSn = 0010X010B 4: IICSn = 0010X110B 5: IICSn = 0010XX00B 6: IICSn = 00000001B Remark : Always generated : Generated only when SPIEn = 1 X: don't care n = 0, 1 304 User's Manual U13850EJ6V0UD RW AK 3 D7 to D0 4 AK SP 5 6 CHAPTER 10 SERIAL INTERFACE FUNCTION (d) Start ~ Address ~ Data ~ Start ~ Address ~ Data ~ Stop <1> When WTIMn = 0 (after restart, mismatch with address (= not extension code)) ST AD6 to AD0 RW AK D7 to D0 1 AK ST AD6 to AD0 RW AK 2 D7 to D0 AK SP 3 4 1: IICSn = 0001X110B 2: IICSn = 0001X000B 3: IICSn = 00000X10B 4: IICSn = 00000001B Remark : Always generated : Generated only when SPIEn = 1 X: don't care n = 0, 1 <2> When WTIMn = 1 (after restart, mismatch with address (= not extension code)) ST AD6 to AD0 RW AK D7 to D0 AK 1 ST AD6 to AD0 2 RW AK D7 to D0 3 AK SP 4 1: IICSn = 0001X110B 2: IICSn = 0001XX00B 3: IICSn = 00000X10B 4: IICSn = 00000001B Remark : Always generated : Generated only when SPIEn = 1 X: don't care n = 0, 1 User's Manual U13850EJ6V0UD 305 CHAPTER 10 SERIAL INTERFACE FUNCTION (3) Slave device operation (when receiving extension code) (a) Start ~ Code ~ Data ~ Data ~ Stop <1> When WTIMn = 0 ST AD6 to AD0 RW AK D7 to D0 1 AK D7 to D0 2 AK SP 4 3 1: IICSn = 0010X010B 2: IICSn = 0010X000B 3: IICSn = 0010X000B 4: IICSn = 00000001B Remark : Always generated : Generated only when SPIEn = 1 X: don't care n = 0, 1 <2> When WTIMn = 1 ST AD6 to AD0 RW AK 1 D7 to D0 2 AK D7 to D0 3 1: IICSn = 0010X010B 2: IICSn = 0010X110B 3: IICSn = 0010X100B 4: IICSn = 0010XX00B 5: IICSn = 00000001B Remark : Always generated : Generated only when SPIEn = 1 X: don't care n = 0, 1 306 User's Manual U13850EJ6V0UD AK SP 4 5 CHAPTER 10 SERIAL INTERFACE FUNCTION (b) Start ~ Code ~ Data ~ Start ~ Address ~ Data ~ Stop <1> When WTIMn = 0 (after restart, match with SVAn) ST AD6 to AD0 RW AK D7 to D0 1 AK ST AD6 to AD0 RW AK 2 D7 to D0 3 AK SP 4 5 1: IICSn = 0010X010B 2: IICSn = 0010X000B 3: IICSn = 0001X110B 4: IICSn = 0001X000B 5: IICSn = 00000001B Remark : Always generated : Generated only when SPIEn = 1 X: don't care n = 0, 1 <2> When WTIMn = 1 (after restart, match with SVAn) ST AD6 to AD0 RW AK 1 D7 to D0 AK 2 ST AD6 to AD0 3 RW AK D7 to D0 4 AK SP 5 6 1: IICSn = 0010X010B 2: IICSn = 0010X110B 3: IICSn = 0010XX00B 4: IICSn = 0001X110B 5: IICSn = 0001XX00B 6: IICSn = 00000001B Remark : Always generated : Generated only when SPIEn = 1 X: don't care n = 0, 1 User's Manual U13850EJ6V0UD 307 CHAPTER 10 SERIAL INTERFACE FUNCTION (c) Start ~ Code ~ Data ~ Start ~ Code ~ Data ~ Stop <1> When WTIMn = 0 (after restart, extension code reception) ST AD6 to AD0 RW AK D7 to D0 1 AK ST AD6 to AD0 RW 2 AK D7 to D0 3 AK SP 4 5 1: IICSn = 0010X010B 2: IICSn = 0010X000B 3: IICSn = 0010X010B 4: IICSn = 0010X000B 5: IICSn = 00000001B Remark : Always generated : Generated only when SPIEn = 1 X: don't care n = 0, 1 <2> When WTIMn = 1 (after restart, extension code reception) ST AD6 to AD0 RW AK 1 D7 to D0 AK 2 ST AD6 to AD0 3 1: IICSn = 0010X010B 2: IICSn = 0010X110B 3: IICSn = 0010XX00B 4: IICSn = 0010X010B 5: IICSn = 0010X110B 6: IICSn = 0010XX00B 7: IICSn = 00000001B Remark : Always generated : Generated only when SPIEn = 1 X: don't care n = 0, 1 308 User's Manual U13850EJ6V0UD RW AK 4 D7 to D0 5 AK SP 6 7 CHAPTER 10 SERIAL INTERFACE FUNCTION (d) Start ~ Code ~ Data ~ Start ~ Address ~ Data ~ Stop <1> When WTIMn = 0 (after restart, mismatch with address (= not extension code)) ST AD6 to AD0 RW AK D7 to D0 1 AK ST AD6 to AD0 RW AK 2 D7 to D0 AK SP 3 4 1: IICSn = 0010X010B 2: IICSn = 0010X000B 3: IICSn = 00000X10B 4: IICSn = 00000001B Remark : Always generated : Generated only when SPIEn = 1 X: don't care n = 0, 1 <2> When WTIMn = 1 (after restart, mismatch with address (= not extension code)) ST AD6 to AD0 RW AK 1 D7 to D0 AK 2 ST AD6 to AD0 3 RW AK D7 to D0 4 AK SP 5 1: IICSn = 0010X010B 2: IICSn = 0010X110B 3: IICSn = 0010XX00B 4: IICSn = 00000X10B 5: IICSn = 00000001B Remark : Always generated : Generated only when SPIEn = 1 X: don't care n = 0, 1 User's Manual U13850EJ6V0UD 309 CHAPTER 10 SERIAL INTERFACE FUNCTION (4) Operation without communication (a) Start ~ Code ~ Data ~ Data ~ Stop ST AD6 to AD0 RW AK D7 to D0 AK D7 to D0 AK SP 1 1: IICSn = 00000001B Remark : Generated only when SPIEn = 1 n = 0, 1 (5) Arbitration loss operation (operation as slave after arbitration loss) (a) When arbitration loss occurs during transmission of slave address data <1> When WTIMn = 0 ST AD6 to AD0 RW AK D7 to D0 1 AK D7 to D0 2 AK SP 4 3 1: IICSn = 0101X110B (Example: when ALDn is read during interrupt servicing) 2: IICSn = 0001X000B 3: IICSn = 0001X000B 4: IICSn = 00000001B Remark : Always generated : Generated only when SPIEn = 1 X: don't care n = 0, 1 <2> When WTIMn = 1 ST AD6 to AD0 RW AK D7 to D0 1 AK D7 to D0 2 AK SP 3 1: IICSn = 0101X110B (Example: when ALDn is read during interrupt servicing) 2: IICSn = 0001X100B 3: IICSn = 0001XX00B 4: IICSn = 00000001B Remark : Always generated : Generated only when SPIEn = 1 X: don't care n = 0, 1 310 User's Manual U13850EJ6V0UD 4 CHAPTER 10 SERIAL INTERFACE FUNCTION (b) When arbitration loss occurs during transmission of extension code <1> When WTIMn = 0 ST AD6 to AD0 RW AK D7 to D0 1 AK D7 to D0 2 AK SP 3 4 1: IICSn = 0110X010B (Example: when ALDn is read during interrupt servicing) 2: IICSn = 0010X000B 3: IICSn = 0010X000B 4: IICSn = 00000001B Remark : Always generated : Generated only when SPIEn = 1 X: don't care n = 0, 1 <2> When WTIMn = 1 ST AD6 to AD0 RW AK 1 D7 to D0 2 AK D7 to D0 3 AK SP 4 5 1: IICSn = 0110X010B (Example: when ALDn is read during interrupt servicing) 2: IICSn = 0010X110B 3: IICSn = 0010X100B 4: IICSn = 0010XX00B 5: IICSn = 00000001B Remark : Always generated : Generated only when SPIEn = 1 X: don't care n = 0, 1 User's Manual U13850EJ6V0UD 311 CHAPTER 10 SERIAL INTERFACE FUNCTION (6) Operation when arbitration loss occurs (no communication after arbitration loss) (a) When arbitration loss occurs during transmission of slave address data ST AD6 to AD0 RW AK D7 to D0 AK D7 to D0 AK SP 1 2 1: IICSn = 01000110B (Example: when ALDn is read during interrupt servicing) 2: IICSn = 00000001B Remark : Always generated : Generated only when SPIEn = 1 n = 0, 1 (b) When arbitration loss occurs during transmission of extension code ST AD6 to AD0 RW AK D7 to D0 AK D7 to D0 IICSn = 0110X010B (Example: when ALDn is read during interrupt servicing) IICCn's LRELn is set to 1 by software 2: IICSn = 00000001B Remark : Always generated : Generated only when SPIEn = 1 X: don't care n = 0, 1 312 SP 2 1 1: AK User's Manual U13850EJ6V0UD CHAPTER 10 SERIAL INTERFACE FUNCTION (c) When arbitration loss occurs during data transfer <1> When WTIMn = 0 ST AD6 to AD0 RW AK D7 to D0 1 AK D7 to D0 AK SP 2 3 1: IICSn = 10001110B 2: IICSn = 01000000B (Example: when ALDn is read during interrupt servicing) 3: IICSn = 00000001B Remark : Always generated : Generated only when SPIEn = 1 n = 0, 1 <2> When WTIMn = 1 ST AD6 to AD0 RW AK D7 to D0 1 AK D7 to D0 AK SP 2 3 1: IICSn = 10001110B 2: IICSn = 01000100B (Example: when ALDn is read during interrupt servicing) 3: IICSn = 00000001B Remark : Always generated : Generated only when SPIEn = 1 n = 0, 1 User's Manual U13850EJ6V0UD 313 CHAPTER 10 SERIAL INTERFACE FUNCTION (d) When loss occurs due to restart condition during data transfer <1> Not extension code (Example: mismatches with SVAn) ST AD6 to AD0 RW AK D7 to Dn ST AD6 to AD0 RW AK 1 D7 to D0 AK SP 2 3 1: IICSn = 1000X110B 2: IICSn = 01000110B (Example: when ALDn is read during interrupt servicing) 3: IICSn = 00000001B Remark : Always generated : Generated only when SPIEn = 1 X: don't care Dn = D6 to D0 n = 0, 1 <2> Extension code ST AD6 to AD0 RW AK D7 to Dn ST AD6 to AD0 1 RW AK D7 to D0 2 1: IICSn = 1000X110B 2: IICSn = 0110X010B (Example: when ALDn is read during interrupt servicing) IICCn's LRELn is set to 1 by software 3: IICSn = 00000001B Remark : Always generated : Generated only when SPIEn = 1 X: don't care Dn = D6 to D0 n = 0, 1 314 User's Manual U13850EJ6V0UD AK SP 3 CHAPTER 10 SERIAL INTERFACE FUNCTION (e) When loss occurs due to stop condition during data transfer ST AD6 to AD0 RW AK D7 to Dn SP 1 2 1: IICSn = 1000X110B 2: IICSn = 01000001B Remark : Always generated : Generated only when SPIEn = 1 X: don't care Dn = D6 to D0 n = 0, 1 (f) When arbitration loss occurs due to low-level data when attempting to generate a restart condition When WTIMn = 1 STTn = 1 ST AD6 to AD0 RW AK D7 to D0 1 AK D7 to D0 2 AK D7 to D0 3 AK SP 4 1: IICSn = 1000X110B 2: IICSn = 1000XX00B 3: IICSn = 01000100B (Example: when ALDn is read during interrupt servicing) 4: IICSn = 00000001B Remark : Always generated : Generated only when SPIEn = 1 X: don't care n = 0, 1 User's Manual U13850EJ6V0UD 315 CHAPTER 10 SERIAL INTERFACE FUNCTION (g) When arbitration loss occurs due to a stop condition when attempting to generate a restart condition When WTIMn = 1 STTn = 1 ST AD6 to AD0 RW AK D7 to D0 AK 1 SP 3 2 1: IICSn = 1000X110B 2: IICSn = 1000XX00B 3: IICSn = 01000001B Remark : Always generated : Generated only when SPIEn = 1 X: don't care n = 0, 1 (h) When arbitration loss occurs due to low-level data when attempting to generate a stop condition When WTIMn = 1 SPTn = 1 ST AD6 to AD0 RW AK D7 to D0 1 AK D7 to D0 2 AK D7 to D0 3 1: IICSn = 1000X110B 2: IICSn = 1000XX00B 3: IICSn = 01000000B (Example: when ALDn is read during interrupt servicing) 4: IICSn = 00000001B Remark : Always generated : Generated only when SPIEn = 1 X: don't care n = 0, 1 316 User's Manual U13850EJ6V0UD AK SP 4 CHAPTER 10 SERIAL INTERFACE FUNCTION 10.3.6 Interrupt request (INTIICn) generation timing and wait control The setting of bit 3 (WTIMn) of IIC control register n (IICCn) determines the timing by which INTIICn is generated and the corresponding wait control, as shown below (n = 0, 1). Table 10-4. INTIICn Generation Timing and Wait Control WTIMn During Slave Device Operation Address Notes 1, 2 9 0 Notes 1, 2 9 1 Notes 1. Data Reception During Master Device Operation Data Transmission Note 2 Note 2 8 8 Note 2 Note 2 9 9 Address Data Reception Data Transmission 9 8 8 9 9 9 The slave device's INTIICn signal and wait period occurs at the falling edge of the ninth clock only when there is a match with the address set to slave address register n (SVAn). At this point, ACK is output regardless of the value set to bit 2 (ACKEn) of IICCn. For a slave device that has received an extension code, INTIICn occurs at the falling edge of the eighth clock. 2. If the received address does not match the contents of slave address register n (SVAn), neither INTIICn nor a wait occurs. Remarks 1. The numbers in the table indicate the number of the serial clock signals. Interrupt requests and wait control are both synchronized with the falling edge of these clock signals. 2. n = 0, 1 (1) During address transmission/reception * Slave device operation: Interrupt and wait timing are determined regardless of the WTIMn bit. * Master device operation: Interrupt and wait timing occur at the falling edge of the ninth clock regardless of the WTIMn bit. (2) During data reception * Master/slave device operation: Interrupt and wait timing are determined according to the WTIMn bit. (3) During data transmission * Master/slave device operation: Interrupt and wait timing are determined according to the WTIMn bit. (4) Wait cancellation method The four wait cancellation methods are as follows. * By setting bit 5 (WRELn) of IIC control register n (IICCn) to 1 * By writing to IIC shift register n (IICn) * By start condition setting (bit 1 (STTn) of IIC control register n (IICCn) = 1) * By step condition setting (bit 0 (SPTn) of IIC control register n (IICCn) = 1) When an 8-clock wait has been selected (WTIMn = 0), the output level of ACK must be determined prior to wait cancellation. Remark n = 0, 1 User's Manual U13850EJ6V0UD 317 CHAPTER 10 (5) SERIAL INTERFACE FUNCTION Stop condition detection INTIICn is generated when a stop condition is detected. Remark n = 0, 1 10.3.7 Address match detection method 2 In I C bus mode, the master device can select a particular slave device by transmitting the corresponding slave address. Address match detection is performed automatically by hardware. An interrupt request (INTIICn) occurs when a local address has been set to slave address register n (SVAn) and when the address set to SVAn matches the slave address sent by the master device, or when an extension code has been received (n = 0, 1). 10.3.8 Error detection 2 In I C bus mode, the status of the serial data bus (SDAn) during data transmission is captured by IIC shift register n (IICn) of the transmitting device, so the IICn data prior to transmission can be compared with the transmitted IICn data to enable detection of transmission errors. A transmission error is judged as having occurred when the compared data values do not match (n = 0, 1). 10.3.9 Extension code (1) When the higher 4 bits of the receive address are either 0000 or 1111, the extension code flag (EXCn) is set for extension code reception and an interrupt request (INTIICn) is issued at the falling edge of the eighth clock (n = 0, 1). The local address stored in slave address register n (SVAn) is not affected. (2) If 11110xx0 is set to SVAn by a 10-bit address transfer and 11110xx0 is transferred from the master device, the results are as follows. Note that INTIICn occurs at the falling edge of the eighth clock (n = 0, 1). * Higher 4 bits of data match: EXCn = 1 * 7 bits of data match: COIn = 1 Note Note Note EXCn: Bit 5 of IIC status register n (IICSn) COIn: Bit 4 of IIC status register n (IICSn) (3) Since the processing after the interrupt request occurs differs according to the data that follows the extension code, such processing is performed by software. For example, when operation as a slave is not desired after the extension code is received, set bit 6 (LRELn) of IIC control register n (IICCn) to 1 and the CPU will enter the next communication wait state. 318 User's Manual U13850EJ6V0UD CHAPTER 10 SERIAL INTERFACE FUNCTION Table 10-5. Extension Code Bit Definitions Slave Address R/W Bit Description 0000 000 0 General call address 0000 000 1 Start byte 0000 001 X CBUS address 0000 010 X Address that is reserved for a different bus format 1111 0xx X 10-bit slave address specification 10.3.10 Arbitration When several master devices simultaneously output a start condition (when STTn is set to 1 before STDn is set to 1 Note ), communication among the master devices is performed as the number of clocks is adjusted until the data differs. This kind of operation is called arbitration (n = 0, 1). When one of the master devices loses in arbitration, an arbitration loss flag (ALDn) in IIC status register n (IICSn) is set at the timing by which the arbitration loss occurred, and the SCLn and SDAn lines are both set for high impedance, which releases the bus (n = 0, 1). The arbitration loss is detected based on the timing of the next interrupt request (the eighth or ninth clock, when a stop condition is detected, etc.) and the ALDn = 1 setting that has been made by software (n = 0, 1). 2 For details of interrupt request timing, see 10.3.5 I C interrupt requests (INTIICn). Note STDn: Bit 1 of IIC status register n (IICSn) STTn: Bit 1 of IIC control register n (IICCn) Figure 10-15. Arbitration Timing Example Master 1 Hi-Z SCL Hi-Z SDA Master 1 loses arbitration Master 2 SCL SDA Transfer lines SCL SDA Remark n = 0, 1 User's Manual U13850EJ6V0UD 319 CHAPTER 10 SERIAL INTERFACE FUNCTION Table 10-6. Status During Arbitration and Interrupt Request Generation Timing Status During Arbitration Interrupt Request Generation Timing At falling edge of eighth or ninth clock following byte transfer During address transmission Note 1 Read/write data after address transmission During extension code transmission Read/write data after extension code transmission During data transmission During ACK signal transfer period after data reception When restart condition is detected during data transfer Note 2 When stop condition is detected during data transfer When stop condition is output (when SPIEn = 1) When data is at low level while attempting to output a restart condition At falling edge of eighth or ninth clock following byte transfer When stop condition is detected while attempting to output a restart condition When stop condition is output (when SPIEn = 1) When data is at low level while attempting to output a stop condition At falling edge of eighth or ninth clock following byte transfer Note 1 Note 2 Note 1 When SCLn is at low level while attempting to output a restart condition Notes 1. When WTIMn (bit 3 of the IIC control register n (IICCn)) = 1, an interrupt request occurs at the falling edge of the ninth clock. When WTIMn = 0 and the extension code's slave address is received, an interrupt request occurs at the falling edge of the eighth clock (n = 0, 1). 2. When there is a possibility that arbitration will occur, set SPIEn = 1 for master device operation (n = 0, 1). Remark SPIEn: Bit 5 of IIC control register n (IICCn) 10.3.11 Wakeup function 2 The I C bus slave function is a function that generates an interrupt request (INTIICn) when a local address and extension code have been received. This function makes processing more efficient by preventing unnecessary interrupt requests from occurring when addresses do not match. When a start condition is detected, wakeup standby mode is set. This wakeup standby mode is in effect while addresses are transmitted due to the possibility that an arbitration loss may change the master device (which has output a start condition) to a slave device. However, when a stop condition is detected, bit 5 (SPIEn) of IIC control register n (IICCn) is set regardless of the wakeup function, and this determines whether interrupt requests are enabled or disabled (n = 0, 1). 320 User's Manual U13850EJ6V0UD CHAPTER 10 SERIAL INTERFACE FUNCTION 10.3.12 Communication reservation To start master device communications when not currently using the bus, a communication reservation can be made to enable transmission of a start condition when the bus is released. There are two modes under which the bus is not used. * When arbitration results in neither master nor slave operation * When an extension code is received and slave operation is disabled (ACK is not returned and the bus was released when bit 6 (LRELn) of IIC control register n (IICCn) was set to 1) (n = 0, 1). If bit 1 (STTn) of IICCn is set while the bus is not used, a start condition is automatically generated and a wait status is set after the bus is released (after a stop condition is detected). When the bus release is detected (when a stop condition is detected), writing to IIC shift register n (IICn) causes the master's address transfer to start. At this point, bit 4 (SPIEn) of IICCn should be set (n = 0, 1). When STTn has been set, the operation mode (as start condition or as communication reservation) is determined according to the bus status (n = 0, 1). If the bus has been released ............................................. a start condition is generated If the bus has not been released (standby mode) ............. communication reservation To detect which operation mode has been determined for STTn, set STTn, wait for the wait period, then check the MSTSn (bit 7 of IIC status register n (IICSn)) (n = 0, 1). Wait periods, which should be set via software, are listed in Table 10-7. These wait periods can be set via the settings for bits 3, 1, and 0 (SMCn, CLn1, and CLn0) of IIC clock selection register n (IICCLn) (n = 0, 1). Table 10-7. Wait Periods SMCn CLn1 CLn0 0 0 0 26 clocks 0 0 1 46 clocks 0 1 0 92 clocks 0 1 1 37 clocks 1 0 0 16 clocks 1 0 1 1 1 0 32 clocks 1 1 1 13 clocks Remark Wait Period n = 0, 1 User's Manual U13850EJ6V0UD 321 CHAPTER 10 SERIAL INTERFACE FUNCTION The communication reservation timing is shown below. Figure 10-16. Communication Reservation Timing Program processing Hardware processing SCL 1 2 3 4 STT =1 Write to IIC0 Set SPD and INTIIC0 Communication reservation 5 6 7 8 9 Set STD 1 2 3 4 5 6 SDA Output by master with bus mastership IICn: IIC shift register n STTn: Bit 1 of IIC control register n (IICCn) STDn: Bit 1 of IIC status register n (IICSn) SPDn: Bit 0 of IIC status register n (IICSn) Remark n = 0, 1 Communication reservations are acknowledged at the following timing. After bit 1 (STDn) of IIC status register n (IICSn) is set to 1, a communication reservation can be made by setting bit 1 (STTn) of IIC control register n (IICCn) to 1 before a stop condition is detected (n = 0, 1). Figure 10-17. Timing for Acknowledging Communication Reservations SCL SDA STD SPD Standby mode Remark 322 n = 0, 1 User's Manual U13850EJ6V0UD CHAPTER 10 SERIAL INTERFACE FUNCTION The communication reservation flowchart is illustrated below. Figure 10-18. Communication Reservation Flowchart DI SET1 STTn ; Sets STT flag (communication reservation). Define communication reservation ; Defines that communication reservation is in effect (defines and sets user flag to any part of RAM). Wait ; Gets wait period set by software (see Table 10-7). Note (Communication reservation) Yes MSTSn = 0? ; Confirmation of communication reservation No (Generate start condition) Cancel communication reservation IICn xxH ; Clear user flag. ; IICn write operation EI Note The communication reservation operation executes a write to IIC shift register n (IICn) when a stop condition interrupt request occurs. Remark n = 0, 1 User's Manual U13850EJ6V0UD 323 CHAPTER 10 SERIAL INTERFACE FUNCTION 10.3.13 Cautions After a reset, when changing from a mode in which no stop condition has been detected (the bus has not been released) to a master device communication mode, first generate a stop condition to release the bus, then perform master device communication. When using multiple masters, it is not possible to perform master device communication when the bus has not been released (when a stop condition has not been detected). Use the following sequence for generating a stop condition. (a) Set IIC clock selection register n (IICCLn). (b) Set bit 7 (IICEn) of IIC control register n (IICCn). (c) Set bit 0 of IICCn. Remark 324 n = 0, 1 User's Manual U13850EJ6V0UD CHAPTER 10 SERIAL INTERFACE FUNCTION 10.3.14 Communication operations (1) Master operations The following is a flowchart of the master operations. Figure 10-19. Master Operation Flowchart START IICCLn xxH Select transfer clock. IICCn xxH IICEn = SPIEn = WTIMn = 1 INTIICn = 1? No Yes ; Stop condition detection Start IICn write transfer. INTIICn = 1? No Yes ACKDn = 1? No Generate stop condition. (no slave with matching address) Yes TRCn = 1? No (receive) Yes (transmit) ; Address transfer completion WTIMn = 0 ACKEn = 1 Start IICn write transfer. WRELn = 1 Start reception. INTIICn = 1? No INTIICn = 1? No Data processing Yes Data processing ACKDn = 1? No Generate restart condition or stop condition. Remark Yes Transfer completed? No Yes ACKEn = 0 n = 0, 1 User's Manual U13850EJ6V0UD 325 CHAPTER 10 (2) SERIAL INTERFACE FUNCTION Slave operation An example of slave operation is shown below. Figure 10-20. Slave Operation Flowchart START IICCn xxH IICEn = 1 INTIICn = 1? No Yes EXCn = 1? Yes No No Communicate? COIn = 1? No LRELn = 1 Yes Yes TRCn = 1? No (receive) Yes (transmit) WTIMn = 0 ACKEn = 1 WTIMn = 1 Start IICn write transfer. WRELn = 1 Start reception. INTIICn = 1? No INTIICn = 1? Yes Data processing No Yes Data processing ACKDn = 1? Yes Transfer completed? No Yes START or STOP ACKEn = 0 STOP (stop condition detection) End Remark 326 n = 0, 1 User's Manual U13850EJ6V0UD No CHAPTER 10 SERIAL INTERFACE FUNCTION 10.3.15 Timing of data communication 2 When using I C bus mode, the master device outputs an address via the serial bus to select one of several slave devices as its communication partner. After outputting the slave address, the master device transmits the TRCn bit (bit 3 of IIC status register n (IICSn)) that specifies the data transfer direction and then starts serial communication with the slave device. The shift operation of IIC bus shift register n (IICn) is synchronized with the falling edge of the serial clock (SCLn). The transmit data is transferred to the SO latch and is output (MSB first) via the SDAn pin. Data input via the SDAn pin is captured by IICn at the rising edge of SCLn. The data communication timing is shown below. Remark n = 0, 1 User's Manual U13850EJ6V0UD 327 CHAPTER 10 SERIAL INTERFACE FUNCTION Figure 10-21. Example of Master to Slave Communication (When 9-Clock Wait Is Selected for Both Master and Slave) (1/3) (a) Start condition ~ address Processing by master device IICn address IICn IICn data ACKDn STDn SPDn WTIMn H ACKEn H MSTSn STTn SPTn L WRELn L INTIICn TRCn H Transmit Transfer lines 1 SCLn 2 3 4 5 6 7 AD6 AD5 AD4 AD3 AD2 AD1 AD0 SDAn 8 9 1 2 3 4 W ACK D7 D6 D5 D4 Start condition Processing by slave device IICn FFH IICn ACKDn STDn SPDn WTIMn H ACKEn H MSTSn L STTn L SPTn L Note WRELn INTIICn (When EXC = 1) TRCn L Receive Note To cancel slave wait, write FFH to IICn or set WRELn. Remark 328 n = 0, 1 User's Manual U13850EJ6V0UD Note CHAPTER 10 SERIAL INTERFACE FUNCTION Figure 10-21. Example of Master to Slave Communication (When 9-Clock Wait Is Selected for Both Master and Slave) (2/3) (b) Data Processing by master device IICn data IICn IICn data ACKDn STDn L SPDn L WTIMn H ACKEn H MSTSn H STTn L SPTn L WRELn L INTIICn TRCn H Transmit Transfer lines SCLn 8 9 SDAn D0 1 2 3 4 5 6 7 8 D7 D6 D5 D4 D3 D2 D1 D0 9 1 2 3 D7 D6 D5 Processing by slave device IICn FFH Note IICn IICn FFH Note ACKDn STDn L SPDn L WTIMn H ACKEn H MSTSn L STTn L SPTn L Note WRELn Note INTIICn TRCn L Receive Note To cancel slave wait, write FFH to IICn or set WRELn. Remark n = 0, 1 User's Manual U13850EJ6V0UD 329 CHAPTER 10 SERIAL INTERFACE FUNCTION Figure 10-21. Example of Master to Slave Communication (When 9-Clock Wait Is Selected for Both Master and Slave) (3/3) (c) Stop condition Processing by master device IICn data IICn IICn address ACKDn STDn SPDn WTIMn H ACKEn H MSTSn STTn SPTn WRELn L INTIICn (When SPIEn = 1) TRCn H Transmit Transfer lines SCLn 1 2 3 4 5 6 7 8 SDAn D7 D6 D5 D4 D3 D2 D1 D0 9 IICn FFH Note Start condition IICn FFH Note ACKDn STDn SPDn WTIMn H ACKEn H MSTSn L STTn L SPTn L Note WRELn Note INTIICn (When SPIEn = 1) TRCn L Receive Note To cancel slave wait, write FFH to IICn or set WRELn. Remark 330 n = 0, 1 User's Manual U13850EJ6V0UD 2 AD6 AD5 Stop condition Processing by slave device IICn 1 CHAPTER 10 SERIAL INTERFACE FUNCTION Figure 10-22. Example of Slave to Master Communication (When 9-Clock Wait Is Selected for Both Master and Slave) (1/3) (a) Start condition ~ address Processing by master device IICn address IICn IICn FFH Note ACKDn STDn SPDn WTIMn H ACKEn H MSTSn STTn L SPTn Note WRELn INTIICn TRCn Transfer lines 1 SCLn 2 3 4 5 6 7 AD6 AD5 AD4 AD3 AD2 AD1 AD0 SDAn 8 9 R 1 D7 2 3 4 5 6 D6 D5 D4 D3 D2 Start condition Processing by slave device IICn data IICn ACKDn STDn SPDn WTIMn H ACKEn H MSTSn L STTn L SPTn L WRELn L INTIICn TRCn Note To cancel master wait, write FFH to IICn or set WRELn. Remark n = 0, 1 User's Manual U13850EJ6V0UD 331 CHAPTER 10 SERIAL INTERFACE FUNCTION Figure 10-22. Example of Slave to Master Communication (When 9-Clock Wait Is Selected for Both Master and Slave) (2/3) (b) Data Processing by master device IICn FFH Note IICn IICn FFH Note ACKDn STDn L SPDn L WTIMn H ACKEn H MSTSn H STTn L SPTn L Note WRELn Note INTIICn TRCn L Receive Transfer lines SCLn 8 9 SDAn D0 ACK 1 D7 2 3 4 5 6 7 8 9 D6 D5 D4 D3 D2 D1 D0 ACK 1 D7 2 3 D6 D5 Processing by slave device IICn data IICn IICn data ACKDn STDn L SPDn L WTIMn H ACKEn H MSTSn L STTn L SPTn L WRELn L INTIICn TRCn H Transmit Note To cancel master wait, write FFH to IICn or set WRELn. Remark 332 n = 0, 1 User's Manual U13850EJ6V0UD CHAPTER 10 SERIAL INTERFACE FUNCTION Figure 10-22. Example of Slave to Master Communication (When 9-Clock Wait Is Selected for Both Master and Slave) (3/3) (c) Stop condition Processing by master device IICn FFH Note IICn IICn address ACKDn STDn SPDn WTIMn H ACKEn H MSTSn STTn SPTn Note WRELn INTIICn (When SPIEn = 1) TRCn Transfer lines SCLn 1 2 3 4 5 6 7 8 SDAn D7 D6 D5 D4 D3 D2 D1 D0 9 1 N-ACK Stop condition 2 AD6 AD5 Start condition Processing by slave device IICn data IICn ACKDn STDn SPDn WTIMn H ACKEn H MSTSn L STTn L SPTn L WRELn INTIICn (When SPIEn = 1) TRCn Note To cancel master wait, write FFH to IICn or set WRELn. Remark n = 0, 1 User's Manual U13850EJ6V0UD 333 CHAPTER 10 SERIAL INTERFACE FUNCTION 2 10.4 I C Bus (B and H Versions) 2 To use the I C bus function, set the P10/SDA0, P12/SCL0, P20/SDA1, and P22/SCL1 pins to N-ch open drain output. 2 The products with an on-chip I C bus are shown below. * V850/SB1: PD703030BY, 703031BY, 703032BY, 703033BY, 70F3030BY, 70F3032BY, 70F3033BY * V850/SB2: PD703034BY, 703035BY, 703036HY, 703037HY, 70F3035BY, 70F3036HY, 70F3037HY 2 2 The I C0 and I C1 have the following two modes. * Operation stop mode 2 * I C (Inter IC) bus mode (multimaster supported) (1) Operation stop mode This mode is used when serial transfers are not performed. It can therefore be used to reduce power consumption. (2) 2 I C bus mode (multimaster support) This mode is used for 8-bit data transfers with several devices via two lines: a serial clock (SCLn) line and a serial data bus (SDAn) line. 2 This mode complies with the I C bus format and the master device can output "start condition", "data", and "stop condition" data to the slave device, via the serial data bus. The slave device automatically detects these 2 received data by hardware. This function can simplify the part of application program that controls the I C bus. 2 Since SCLn and SDAn are open drain outputs, the I Cn requires pull-up resistors for the serial clock line and the serial data bus line. Remark 334 n = 0, 1 User's Manual U13850EJ6V0UD CHAPTER 10 SERIAL INTERFACE FUNCTION 2 Figure 10-23. Block Diagram of I C Internal bus IIC status register n (IICSn) MSTSn ALDn EXCn COIn TRCn ACKDn STDn SPDn IIC control register n (IICCn) IICEn LRELn WRELn SPIEn WTIMn ACKEn STTn SPTn Set Slave address register n (SVAn) SDAn Start condition generator Clear Match signal Noise eliminator IIC shift register n (IICn) D Q SO latch CLn1, CLn0 Data hold time correction circuit N-ch open-drain output ACK output circuit Wakeup controller ACK detector Start condition detector Stop condition detector SCLn Noise eliminator Interrupt request signal generator Serial clock counter Serial clock wait controller Serial clock controller N-ch open-drain output fxx TMx output INTIICn Bus status detector Prescaler CLDn DADn SMCn DFCn CLn1 CLn0 CLXn IIC clock selection register n (IICCLn) IICCEn1 IICCEn0 IIC function expansion register n (IICXn) STCFn IICBSYn STCENn IICRSVn IIC clock expansion register n (IICCEn) IIC flag register n (IICFn) Internal bus Remarks 1. n = 0, 1 2. TMx output n = 0: TM2 output n = 1: TM3 output User's Manual U13850EJ6V0UD 335 CHAPTER 10 SERIAL INTERFACE FUNCTION A serial bus configuration example is shown below. 2 Figure 10-24. Serial Bus Configuration Example Using I C Bus +VDD +VDD Master CPU1 SDA Slave CPU1 Address 1 336 SCL Serial data bus Serial clock User's Manual U13850EJ6V0UD SDA Master CPU2 Slave CPU2 SCL Address 2 SDA Slave CPU3 SCL Address 3 SDA Slave IC SCL Address 4 SDA Slave IC SCL Address N CHAPTER 10 SERIAL INTERFACE FUNCTION 10.4.1 Configuration 2 I Cn includes the following hardware (n = 0, 1). 2 Table 10-8. Configuration of I Cn Item Configuration Registers IIC shift registers 0 and 1 (IIC0, IIC1) Slave address registers 0 and 1 (SVA0, SVA1) Control registers IIC control registers 0 and 1 (IICC0, IICC1) IIC status registers 0 and 1 (IICS0, IICS1) IIC flag registers 0 and 1 (IICF0, IICF1) IIC clock selection registers 0 and 1 (IICCL0, IICCL1) IIC clock expansion registers 0 and 1 (IICCE0, IICCE1) IICC function expansion registers 0 and 1 (IICX0, IICX1) (1) IIC shift registers 0 and 1 (IIC0, IIC1) IICn is used to convert 8-bit serial data to 8-bit parallel data and to convert 8-bit parallel data to 8-bit serial data. IICn can be used for both transmission and reception (n = 0, 1). Write and read operations to IICn are used to control the actual transmit and receive operations. IICn is set by an 8-bit memory manipulation instruction. RESET input clears IIC0 and IIC1 to 00H. (2) Slave address registers 0 and 1 (SVA0, SVA1) SVAn sets local addresses when in slave mode. SVAn is set by an 8-bit memory manipulation instruction (n = 0, 1). RESET input clears SVA0 and SVA1 to 00H. (3) SO latch The SO latch is used to retain the SDAn pin's output level (n = 0, 1). (4) Wakeup controller This circuit generates an interrupt request when the address received by this register matches the address value set to slave address register n (SVAn) or when an extension code is received (n = 0, 1). (5) Clock selector This selects the sampling clock to be used. (6) Serial clock counter This counter counts the serial clocks that are output and the serial clocks that are input during transmit/receive operations and is used to verify that 8-bit data was sent or received. User's Manual U13850EJ6V0UD 337 CHAPTER 10 SERIAL INTERFACE FUNCTION (7) Interrupt request signal generator This circuit controls the generation of interrupt request signals (INTIICn). 2 An I C interrupt is generated following either of two triggers. * Eighth or ninth clock of the serial clock (set by WTIMn bit) * Interrupt request generated when a stop condition is detected (set by SPIEn bit) Remarks 1. n = 0, 1 2. WTIMn bit: SPIEn bit: Bit 3 of IIC control register n (IICCn) Bit 4 of IIC control register n (IICCn) (8) Serial clock controller In master mode, this circuit generates the clock output via the SCLn pin from a sampling clock (n = 0, 1). (9) Serial clock wait controller This circuit controls the wait timing. (10) ACK output circuit, stop condition detector, start condition detector, and ACK detector These circuits are used to output and detect various control signals. (11) Data hold time correction circuit This circuit generates the hold time for data corresponding to the falling edge of the serial clock. (12) Start condition generator This circuit generates a start condition when the STTn bit is set. However, in the communication reservation disabled status (IICRSVn = 1), when the bus is not released (IICBSYn = 1), start condition requests are ignored and the STCFn bit is set. Remark IICRSVn bit: Bit 0 of IIC flag register n (IICFn) IICBSYn bit: Bit 6 of IIC flag register n (IICFn) STCFn bit: Bit 7 of IIC flag register n (IICFn) (13) Bus status detector This circuit detects whether or not the bus is released by detecting start conditions and stop conditions. However, as the bus status cannot be detected immediately following operation, the initial status is set by the STCENn bit. Remark 338 STCENn bit: Bit 1 of IIC flag register n (IICFn) User's Manual U13850EJ6V0UD CHAPTER 10 SERIAL INTERFACE FUNCTION 2 10.4.2 I C control register 2 2 I C0 and I C1 are controlled by the following registers. * IIC control registers 0, 1 (IICC0, IICC1) * IIC status registers 0, 1 (IICS0, IICS1) * IIC flag registers 0, 1 (IICF0, IICF1) * IIC clock selection registers 0, 1 (IICCL0, IICCL1) * IIC clock expansion registers 0, 1 (IICCE0, IICCE1) * IIC function expansion registers 0, 1 (IICX0, IICX1) The following registers are also used. * IIC shift registers 0, 1 (IIC0, IIC1) * Slave address registers 0, 1 (SVA0, SVA1) (1) IIC control registers 0, 1 (IICC0, IICC1) 2 2 IICCn is used to enable/disable I C operations, set wait timing, and set other I C operations. IICCn can be set by an 8-bit or 1-bit memory manipulation instruction (n = 0, 1). RESET input clears IICCn to 00H. Caution 2 2 In I C0, I C1 bus mode, set the port 1 mode register (PM1), port 2 mode register (PM2), port 1 function register (PF1), and port 2 function register (PF2) as follows. In addition, set each output latch to 0. Pin Port Mode Register Port Function Register P10/SI0/SDA0 PM10 of PM1 register = 0 PF10 of PF1 register = 1 P12/SCK0/SCL0 PM12 of PM1 register = 0 PF12 of PF1 register = 1 P20/SI2/SDA1 PM20 of PM2 register = 0 PF20 of PF2 register = 1 P22/SCK2/SCL1 PM22 of PM2 register = 0 PF22 of PF2 register = 1 User's Manual U13850EJ6V0UD 339 CHAPTER 10 SERIAL INTERFACE FUNCTION (1/4) After reset: 00H IICCn R/W Address: FFFFF340H, FFFFF350H <7> <6> <5> <4> <3> <2> <1> <0> IICEn LRELn WRELn SPIEn WTIMn ACKEn STTn SPTn (n = 0, 1) I2Cn operation enable/disable specification IICEn 0 Stops operation. Presets IIC status register n (IICSn). Stops internal operation. 1 Enables operation. Condition for clearing (IICEn = 0) Condition for setting (IICEn = 1) * Cleared by instruction * When RESET is input * Set by instruction LRELn Exit from communications 0 Normal operation 1 This exits from the current communications operation and sets standby mode. This setting is automatically cleared after being executed. Its uses include cases in which a locally irrelevant extension code has been received. The SCLn and SDAn lines are set to high impedance. The following flags are cleared. * STDn * ACKDn * TRCn * COIn * EXCn * MSTSn * STTn * SPTn The standby mode following exit from communications remains in effect until the following communications entry conditions are met. * After a stop condition is detected, restart is in master mode. * An address match or extension code reception occurs after the start condition. Note Condition for clearing (LRELn = 0) Condition for setting (LRELn = 1) * Automatically cleared after execution * When RESET is input * Set by instruction Note This flag's signal is invalid when IICEn = 0. Remark 340 STDn: ACKDn: Bit 1 of IIC state register n (IICSn) Bit 2 of IIC state register n (IICSn) TRCn: Bit 3 of IIC state register n (IICSn) COIn: Bit 4 of IIC state register n (IICSn) EXCn: Bit 5 of IIC state register n (IICSn) MSTSn: Bit 7 of IIC state register n (IICSn) User's Manual U13850EJ6V0UD CHAPTER 10 SERIAL INTERFACE FUNCTION (2/4) WRELn Wait cancellation control 0 Does not cancel wait 1 Cancels wait. This setting is automatically cleared after wait is canceled. Note Condition for clearing (WRELn = 0) Condition for setting (WRELn = 1) * Automatically cleared after execution * When RESET is input * Set by instruction SPIEn Enable/disable generation of interrupt request when stop condition is detected 0 Disable 1 Enable Note Condition for clearing (SPIEn = 0) Condition for setting (SPIEn = 1) * Cleared by instruction * When RESET is input * Set by instruction WTIMn Control of wait and interrupt request generation 0 Interrupt request is generated at the eighth clock's falling edge. Master mode: After output of eight clocks, clock output is set to low level and wait is set. Slave mode: After input of eight clocks, the clock is set to low level and wait is set for master device. 1 Interrupt request is generated at the ninth clock's falling edge. Master mode: After output of nine clocks, clock output is set to low level and wait is set. Slave mode: After input of nine clocks, the clock is set to low level and wait is set for master device. This bit's setting is invalid during an address transfer and is valid as the transfer is completed. When in master mode, a wait is inserted at the falling edge of the ninth clock during address transfers. For a slave device that has received a local address, a wait is inserted at the falling edge of the ninth clock after an ACK signal is issued. When the slave device has received an extension code, a wait is inserted at the falling edge of the eighth clock. Note Condition for clearing (WTIMn = 0) Condition for setting (WTIMn = 1) * Cleared by instruction * When RESET is input * Set by instruction Note This flag's signal is invalid when IICEn = 0. Remark n = 0, 1 User's Manual U13850EJ6V0UD 341 CHAPTER 10 SERIAL INTERFACE FUNCTION (3/4) ACKEn Acknowledge control 0 Disable acknowledge. 1 Enable acknowledge. During the ninth clock period, the SDA line is set to low level. However, the ACK is invalid during address transfers and is valid when EXCn = 1. Note Condition for clearing (ACKEn = 0) Condition for setting (ACKEn = 1) * Cleared by instruction * When RESET is input * Set by instruction STTn Start condition trigger 0 Does not generate a start condition. 1 When bus is released (in STOP mode): Generates a start condition (for starting as master). The SDAn line is changed from high level to low level and then the start condition is generated. Next, after the rated amount of time has elapsed, SCLn is changed to low level. When bus is not used: * When communication reservation function is enabled (IICRSVn = 0) Functions as the start condition reservation flag. When set, automatically generates a start condition after the bus is released. * When communication reservation function is disabled (IICRSVn = 1) The STCFn bit is set. No start condition is generated. In the wait state (when master device) Generates a restart condition after releasing the wait. Cautions concerning set timing * For master reception: Cannot be set during transfer. Can be set only when ACKEn has been set to 0 and slave has been notified of final reception. * For master transmission: A start condition cannot be generated normally during the ACKn period. Set during the wait period. * For slave: The communication reserved status is entered even if the communication reservation function is disabled (IICRSVn = 1). * Cannot be set at the same time as SPTn Condition for clearing (STTn = 0) Condition for setting (STTn = 1) * Cleared by loss in arbitration * Cleared after start condition is generated by master device * When LRELn = 1 * When IICEn = 0 * Cleared when RESET is input * Set by instruction Note This flag's signal is invalid when IICEn = 0. Remarks 1. Bit 1 (STTn) is 0 if it is read immediately after data setting. 2. IICRSVn: Bit 0 of IIC flag register n (IICFn) STCFn: Bit 7 of IIC flag register n (IICFn) 3. n = 0, 1 342 User's Manual U13850EJ6V0UD CHAPTER 10 SERIAL INTERFACE FUNCTION (4/4) SPTn Stop condition trigger 0 Stop condition is not generated. 1 Stop condition is generated (termination of master device's transfer). After the SDAn line goes to low level, either set the SCLn line to high level or wait until it goes to high level. Next, after the rated amount of time has elapsed, the SDAn line is changed from low level to high level and a stop condition is generated. Cautions concerning setting timing * For master reception: Cannot be set during transfer. Can be set only when ACKEn has been set to 0 and during the wait period after slave has been notified of final reception. * For master transmission: A stop condition cannot be generated normally during the ACKn period. Set during the wait period. * Cannot be set at the same time as STTn. * SPTn can be set only when in master modeNote * When WTIMn has been set to 0, if SPTn is set during the wait period that follows output of eight clocks, note that a stop condition will be generated during the high-level period of the ninth clock. When a ninth clock must be output, WTIMn should be changed from 0 to 1 during the wait period following output of eight clocks, and SPTn should be set during the wait period that follows output of the ninth clock. Condition for clearing (SPTn = 0) Condition for setting (SPTn = 1) * Cleared by loss in arbitration * Automatically cleared after stop condition is detected * When LRELn = 1 * When IICEn = 0 * Cleared when RESET is input * Set by instruction Note Set SPTn only in master mode. However, when the IICRSVn bit of IIC flag register n (IICFn) is 0, SPTn must be set and a stop condition generated before the first stop condition is detected following the switch to operation enable status. For details, see 10.4.13 Cautions. Caution When bit 3 (TRCn) of IIC status register n (IICSn) is set to 1, WRELn is set during the ninth clock and wait is canceled, after which TRCn is cleared and the SDAn line is set to high impedance. Remarks 1. Bit 0 (SPTn) is 0 if it is read immediately after data setting. 2. n = 0, 1 User's Manual U13850EJ6V0UD 343 CHAPTER 10 SERIAL INTERFACE FUNCTION (2) IIC status registers 0, 1 (IICS0, IICS1) 2 IICSn indicates the status of the I Cn bus. IICSn can be set by an 8-bit or 1-bit memory manipulation instruction. IICSn is a read-only register (n = 0, 1). RESET input sets IICSn to 00H. (1/3) After reset: 00H IICSn R Address: FFFFF342H, FFFFF352H <7> <6> <5> <4> <3> <2> <1> <0> MSTSn ALDn EXCn COIn TRCn ACKDn STDn SPDn (n = 0, 1) MSTSn Master device status 0 Slave device status or communication standby status 1 Master device communication status Condition for clearing (MSTSn = 0) Condition for setting (MSTSn = 1) * When a stop condition is detected * When ALDn = 1 * Cleared by LRELn = 1 * When IICEn changes from 1 to 0 * When RESET is input * When a start condition is generated ALDn Detection of arbitration loss 0 This status means either that there was no arbitration or that the arbitration result was a "win". 1 This status indicates the arbitration result was a "loss". MSTSn is cleared. Condition for clearing (ALDn = 0) Condition for setting (ALDn = 1) Note * Automatically cleared after IICSn is read * When the arbitration result is a "loss". * When IICEn changes from 1 to 0 * When RESET is input Note This register is also cleared when a bit manipulation instruction is executed for bits other than IICSn. Remark 344 LRELn: Bit 6 of IIC control register n (IICCn) IICEn: Bit 7 of IIC control register n (IICCn) User's Manual U13850EJ6V0UD CHAPTER 10 SERIAL INTERFACE FUNCTION (2/3) EXCn Detection of extension code reception 0 Extension code was not received. 1 Extension code was received. Condition for clearing (EXCn = 0) Condition for setting (EXCn = 1) * When a start condition is detected * When a stop condition is detected * Cleared by LRELn = 1 * When IICEn changes from 1 to 0 * When RESET is input * When the higher four bits of the received address data is either "0000" or "1111" (set at the rising edge of the eighth clock). COIn Detection of matching addresses 0 Addresses do not match. 1 Addresses match. Condition for clearing (COIn = 0) Condition for setting (COIn = 1) * When a start condition is detected * When a stop condition is detected * Cleared by LRELn = 1 * When IICEn changes from 1 to 0 * When RESET is input * When the received address matches the local address (SVAn) (set at the rising edge of the eighth clock). TRCn Detection of transmit/receive status 0 Receive status (other than transmit status). The SDAn line is set for high impedance. 1 Transmit status. The value in the SO latch is enabled for output to the SDAn line (valid starting at the falling edge of the first byte's ninth clock). Condition for clearing (TRCn = 0) Condition for setting (TRCn = 1) * When a stop condition is detected * Cleared by LRELn = 1 * When IICEn changes from 1 to 0 * Cleared by WRELn = 1Note * When ALDn changes from 0 to 1 * When RESET is input Master * When "1" is output to the first byte's LSB (transfer direction specification bit) Slave * When a start condition is detected When not used for communication Master * When a start condition is generated Slave * When "1" is input by the first byte's LSB (transfer direction specification bit) Note TRCn is cleared and SDAn line become high impedance when bit 5 (WRELn) of IIC control register n (IICCn) is set and wait state is released at ninth clock with bit 3 (TRCn) of IIC status register n (IICSn) = 1. Remarks 1. WRELn: Bit 5 of IIC control register n (IICCn) LRELn: Bit 6 of IIC control register n (IICCn) IICEn: Bit 7 of IIC control register n (IICCn) 2. n = 0, 1 User's Manual U13850EJ6V0UD 345 CHAPTER 10 SERIAL INTERFACE FUNCTION (3/3) ACKDn Detection of ACK 0 ACK was not detected. 1 ACK was detected. Condition for clearing (ACKDn = 0) Condition for setting (ACKD = 1) * When a stop condition is detected * At the rising edge of the next byte's first clock * Cleared by LRELn = 1 * When IICEn changes from 1 to 0 * When RESET is input * After the SDAn line is set to low level at the rising edge of the SCLn's ninth clock STDn Detection of start condition 0 Start condition was not detected. 1 Start condition was detected. This indicates that the address transfer period is in effect Condition for clearing (STDn = 0) Condition for setting (STDn = 1) * When a stop condition is detected * At the rising edge of the next byte's first clock following address transfer * Cleared by LRELn = 1 * When IICEn changes from 1 to 0 * When RESET is input When a start condition is detected SPDn Detection of stop condition 0 Stop condition was not detected. 1 Stop condition was detected. The master device's communication is terminated and the bus is released. Condition for clearing (SPDn = 0) Condition for setting (SPDn = 1) * At the rising edge of the address transfer byte's first clock following setting of this bit and detection of a start condition * When IICEn changes from 1 to 0 * When RESET is input When a stop condition is detected Remarks 1. LRELn: Bit 6 of IIC control register n (IICCn) IICEn: Bit 7 of IIC control register n (IICCn) 2. n = 0, 1 346 User's Manual U13850EJ6V0UD CHAPTER 10 SERIAL INTERFACE FUNCTION (3) IIC flag registers 0, 1 (IICF0, IICF1) 2 2 IICFn is used to set the I Cn operation mode and to indicate the I C bus status. IICFn can be set by an 8-bit or 1-bit memory manipulation instruction. The IICRSVn bit is used to enable/disable the communication reservation function (see 10.4.12 Communication reservation). The STCENn bit is used to set the initial value of the IICBSYn bit (see 10.4.13 Cautions). 2 The IICRSVn and STCENn bits can be written only when the I Cn operation is disabled (IICEn bit of IIC control register n (IICCn) = 0). After operation is enabled, the IICFn register can be read (n = 0). RESET input clears IICFn to 00H. When IICFn = 00H, these registers operate in the same way as the A versions. (1/2) After reset: 00H IICFn R/WNote Address: FFFFF33CH, FFFFF33EH <7> <6> 5 4 3 2 STCFn IICBSYn 0 0 0 0 <1> <0> STCENn IICRSVn (n = 0, 1) STCFn STTn bit clear 0 Generate start condition 1 Clear STTn bit Condition for clearing (STCFn = 0) Condition for setting (STCFn = 1) * Clearing by setting STTn = 1 * Clearing of STTn when communication reservation * RESET input is disabled (IICRSVn = 1). I2Cn bus status IICBSYn 0 Bus release status 1 Bus communication status Condition for clearing (IICBSYn = 0) Setting conditions (IICBSYn = 1) * Detection of stop condition * Detection of start condition * RESET input * Setting of IICEn when STCENn = 0 Note Bits 6 and 7 are read-only bits. Remark STTn: Bit 1 of IIC control register n (IICCn) IICEn: Bit 7 of IIC control register n (IICCn) User's Manual U13850EJ6V0UD 347 CHAPTER 10 SERIAL INTERFACE FUNCTION (2/2) STCENn Initial start enable trigger 0 After operation is enabled (IICEn = 1), cannot generate a start condition until a stop condition is detected. 1 After operation is enabled (IICEn = 1), can generates a start condition without detecting a stop condition. Condition for clearing (STCENn = 0) Condition for setting (STCENn = 1) * Detection of start condition * Setting by instruction * RESET input IICRSVn Communication reservation function disable bit 0 Enable communication reservation 1 Disable communication reservation Condition for clearing (IICRSVn = 0) Condition for setting (IICRSVn = 1) * Clearing by instruction * Setting by instruction * RESET input Cautions 1. Write to the STCENn bit only when the operation is stopped (IICEn = 0). 2 2. As the bus release status (IICBSYn = 0) is recognized immediately after I C operation is enabled regardless of the actual bus status when STCENn = 1, when generating the first start condition (STTn = 1), it is necessary to verify that the bus has been released in order to prevent such communications from being destroyed. 3. Write to the IICRSVn bit only when the operation is stopped (IICEn = 0). Remark STTn: Bit 1 of IIC control register n (IICCn) IICEn: Bit 7 of IIC control register n (IICCn) 348 User's Manual U13850EJ6V0UD CHAPTER 10 SERIAL INTERFACE FUNCTION (4) IIC clock selection registers 0, 1 (IICCL0, IICCL1) 2 IICCLn is used to set the transfer clock for the I Cn bus. IICCLn can be set by an 8-bit or 1-bit memory manipulation instruction. Bits SMCn, CLn1 and CLn0 are set using CLXn bit of IIC function expansion register n (IICXn) in combination with bits IICCEn1 and IICCEn0 of IIC 2 clock expansion register n (IICCEn) (n = 0, 1) (see 10.4.2 (7) I Cn transfer clock setting method). RESET input clears IICCLn to 00H. Note After reset: 00H IICCLn R/W Address: FFFFF344H, FFFFF354H 7 6 <5> <4> 3 2 1 0 0 0 CLDn DADn SMCn DFCn CLn1 CLn0 (n = 0, 1) CLDn Detection of SCLn line level (valid only when IICEn = 1) 0 SCLn line was detected at low level. 1 SCLn line was detected at high level. Condition for clearing (CLDn = 0) Condition for setting (CLDn = 1) * When the SCLn line is at low level * When IICEn = 0 * When RESET is input * When the SCLn line is at high level DADn Detection of SDAn line level (valid only when IICEn = 1) 0 SDAn line was detected at low level. 1 SDAn line was detected at high level. Condition for clearing (DADn = 0) Condition for setting (DADn = 1) * When the SDAn line is at low level * When IICEn = 0 * When RESET is input * When the SDAn line is at high level SMCn Operation mode switching 0 Operates in standard mode. 1 Operates in high-speed mode. DFCn Digital filter operation control 0 Digital filter off. 1 Digital filter on. Digital filter can be used only in high-speed mode. In high-speed mode, the transfer clock does not vary regardless of DFCn switching (on/off). Note Bits 4 and 5 are read only bits. Caution Be sure to set bits 7 and 6 to 0. Remark IICEn: Bit 7 of IIC control register n (IICCn) User's Manual U13850EJ6V0UD 349 CHAPTER 10 SERIAL INTERFACE FUNCTION (5) IIC function expansion registers 0, 1 (IICX0, IICX1) 2 These registers set the function expansion of I Cn (valid only in high-speed mode). IICXn is set by an 8-bit or 1-bit memory manipulation instruction. Set the CLXn bit in combination with the SMCn, DFCn, CLn1, and the CLn0 bits of IIC clock selection register n (IICCLn) and the IICCEn1 and IICCEn0 2 bits of IIC clock expansion register n (IICCEn) (see 10.4.2 (7) I Cn transfer clock setting method) (n = 0, 1). RESET input clears these registers to 00H. After reset: 00H IICXn R/W Address: FFFFF34AH, FFFFF35AH 7 6 5 4 3 2 1 <0> 0 0 0 0 0 0 0 CLXn (n = 0, 1) (6) IIC clock expansion registers 0, 1 (IICCE0, IICCE1) 2 These registers set the transfer clock expansion of I Cn. IICCEn is set by an 8-bit memory manipulation instruction. Set the IICCEn1 and IICCEn0 bits in combination with the SMCn, CLn1, and CLn0 bits of IIC clock selection register n (IICCLn) and the CLXn bit of IIC function 2 expansion register n (IICXn) (see 10.4.2 (7) I Cn transfer clock setting method) (n = 0, 1). RESET input clears these registers to 00H. After reset: 00H IICCEn R/W Address: FFFFF34CH, FFFFF35CH 7 6 5 4 3 2 1 0 0 0 0 0 0 0 IICCEn1 IICCEn0 (n = 0, 1) 2 (7) I Cn transfer clock setting method 2 The I Cn transfer clock frequency (fSCL) is calculated using the following expression (n = 0, 1). fSCL = 1/(m x T + tR + tF) m = 12, 24, 48, 36, 54, 44, 86, 172, 132, 198 (see Table 10-9 Selection Clock Setting.) T: 1/fXX tR: SCLn rise time tF : SCLn fall time 2 For example, the I Cn transfer clock frequency (fSCL) when fXX = 20 MHz, m = 198, tR = 200 ns, and tF = 50 ns is calculated using following expression. fSCL = 1/(198 x 50 ns + 200 ns + 50 ns) 98.5 kHz 350 User's Manual U13850EJ6V0UD CHAPTER 10 SERIAL INTERFACE FUNCTION m x T + t R + tF tR tF m/2 x T m/2 x T SCLn SCLn inversion SCLn inversion SCLn inversion The selection clock is set using a combination of the SMCn, CLn1, and CLn0 bits of IIC clock selection register n (IICCLn), the CLXn bit of IIC function expansion register n (IICXn), and IICCEn1 and the IICCEn0 bits of IIC clock expansion register n (IICCEn) (n = 0, 1). Table 10-9. Selection Clock Setting IICCEn Bit 1 Bit 0 IICCEn1 IICCEn0 IICXn IICCLn Bit 0 Bit 3 Bit 1 Bit 0 CLXn SMCn CLn1 CLn0 Selection Clock (fXX/m) Settable Main Clock Frequency (fXX) Range x x 1 1 0 x fXX/12 4.0 MHz to 4.19 MHz x x 0 1 0 x fXX/24 4.0 MHz to 8.38 MHz x x 0 1 1 0 fXX/48 8.0 MHz to 16.67 MHz 0 1 0 1 1 1 fXX/36 12.0 MHz to 13.4 MHz 1 0 0 1 1 1 fXX/54 16.0 MHz to 20.0 MHzNote 0 0 0 1 1 1 n=0 TM2 output/18 TM2 setting n=1 TM3 output/18 TM3 setting x x 0 0 0 0 fXX/44 2.0 MHz to 4.19 MHz x x 0 0 0 1 fXX/86 4.19 MHz to 8.38 MHz x x 0 0 1 0 fXX/172 8.38 MHz to 16.67 MHz 0 1 0 0 1 1 fXX/132 12.0 MHz to 13.4 MHz 1 0 0 0 1 1 fXX/198 16.0 MHz to 20.0 MHzNote 0 0 0 0 1 1 n=0 TM2 output/66 TM2 setting n=1 TM3 output/66 TM3 setting Other than above Operation Mode High-speed mode (SMCn = 1) Normal mode (SMCn = 0) Setting prohibited Note This cannot be set in the PD703034BY, 703035BY, and 70F3035BY. Remarks 1. n = 0, 1 2. x: don't care 3. When the output of the timer is selected as the clock, it is not necessary to set the P26/TO2/TI2 and P27/TO3/TI3 pins in the timer output mode. User's Manual U13850EJ6V0UD 351 CHAPTER 10 SERIAL INTERFACE FUNCTION (8) IIC shift registers 0, 1 (IIC0, IIC1) IICn is used for serial transmission/reception (shift operations) that is synchronized with the serial clock. It can be read from or written to in 8-bit units, but data should not be written to IICn during a data transfer (n = 0, 1). After reset: 00H R/W 7 Address: FFFFF348H, FFFFF358H 6 5 4 3 2 1 <0> 2 1 0 IICn (n = 0, 1) (9) Slave address registers 0, 1 (SVA0, SVA1) 2 SVAn holds the I C bus's slave addresses. It can be read from or written to in 8-bit units, but bit 0 should be fixed as 0. After reset: 00H R/W 7 Address: FFFFF346H, FFFFF356H 6 5 4 3 SVAn 0 (n = 0, 1) 10.4.3 (1) 2 I C bus mode functions Pin configuration The serial clock pin (SCLn) and serial data bus pin (SDAn) are configured as follows (n = 0, 1). SCLn ...............This pin is used for serial clock input and output. This pin is an N-ch open-drain output for both master and slave devices. Input is Schmitt input. SDAn ..............This pin is used for serial data input and output. This pin is an N-ch open-drain output for both master and slave devices. Input is Schmitt input. Since outputs from the serial clock line and the serial data bus line are N-ch open-drain outputs, an external pull- up resistor is required. 352 User's Manual U13850EJ6V0UD CHAPTER 10 SERIAL INTERFACE FUNCTION Figure 10-25. Pin Configuration Diagram VDD Slave device Master device SCL SCL Clock output (Clock output) VDD (Clock input) Clock input SDA SDA Data output Data output Data input Data input 2 10.4.4 I C bus definitions and control methods 2 2 The following section describes the I C bus's serial data communication format and the signals used by the I C 2 bus. The transfer timing for the "start condition", "data", and "stop condition" output via the I C bus's serial data bus is shown below. 2 Figure 10-26. I C Bus's Serial Data Transfer Timing SCL 1 to 7 8 9 1 to 7 R/W ACK Data 8 9 1 to 7 ACK Data 8 9 SDA Start Address condition ACK Stop condition The master device outputs the start condition, slave address, and stop condition. The acknowledge signal (ACK) can be output by either the master or slave device (normally, it is output by the device that receives 8-bit data). The serial clock (SCLn) is continuously output by the master device. However, in the slave device, the SCLn's low-level period can be extended and a wait can be inserted (n = 0, 1). User's Manual U13850EJ6V0UD 353 CHAPTER 10 (1) SERIAL INTERFACE FUNCTION Start condition A start condition is met when the SCLn pin is at high level and the SDAn pin changes from high level to low level. The start conditions for the SCLn pin and SDAn pin are signals that the master device outputs to the slave device when starting a serial transfer. The slave device includes hardware for detecting start conditions (n = 0, 1). Figure 10-27. Start Conditions H SCL SDA A start condition is output when IIC control register n (IICCn)'s bit 1 (STTn) is set to 1 after a stop condition has been detected (SPDn: Bit 0 = 1 in the IIC status register n (IICSn)). When a start condition is detected, IICSn's bit 1 (STDn) is set to 1 (n = 0, 1). (2) Addresses The 7 bits of data that follow the start condition are defined as an address. An address is a 7-bit data segment that is output in order to select one of the slave devices that are connected to the master device via bus lines. Therefore, each slave device connected via the bus lines must have a unique address. The slave devices include hardware that detects the start condition and checks whether or not the 7-bit address data matches the data values stored in slave address register n (SVAn). If the address data matches the SVAn values, the slave device is selected and communicates with the master device until the master device transmits a start condition or stop condition (n = 0, 1). Figure 10-28. Address SCLn 1 2 3 4 5 6 7 8 SDAn AD6 AD5 AD4 AD3 AD2 AD1 AD0 R/W Address 9 Note INTIICn Note INTIICn is generated if a local address or extension code is received during slave device operation. Remark 354 n = 0, 1 User's Manual U13850EJ6V0UD CHAPTER 10 SERIAL INTERFACE FUNCTION The slave address and the eighth bit, which specifies the transfer direction as described in (3) Transfer direction specification below, are together written to the IIC shift register (IICn) and are then output. Received addresses are written to IICn (n = 0, 1). The slave address is assigned to the higher 7 bits of IICn. (3) Transfer direction specification In addition to the 7-bit address data, the master device sends 1 bit that specifies the transfer direction. When this transfer direction specification bit has a value of 0, it indicates that the master device is transmitting data to a slave device. When the transfer direction specification bit has a value of 1, it indicates that the master device is receiving data from a slave device. Figure 10-29. Transfer Direction Specification SCLn 1 2 3 4 5 6 7 8 SDAn AD6 AD5 AD4 AD3 AD2 AD1 AD0 R/W 9 Transfer direction specification Note INTIICn Note INTIICn is generated if a local address or extension code is received during slave device operation. Remark n = 0, 1 User's Manual U13850EJ6V0UD 355 CHAPTER 10 (4) SERIAL INTERFACE FUNCTION Acknowledge signal (ACK) The acknowledge signal (ACK) is used by the transmitting and receiving devices to confirm serial data reception. The receiving device returns one ACK signal for each 8 bits of data it receives. The transmitting device normally receives an ACK signal after transmitting 8 bits of data. However, when the master device is the receiving device, it does not output an ACK signal after receiving the final data to be transmitted. The transmitting device detects whether or not an ACK signal is returned after it transmits 8 bits of data. When an ACK signal is returned, the reception is judged as normal and processing continues. If the slave device does not return an ACK signal, the master device outputs either a stop condition or a restart condition and then stops the current transmission. Failure to return an ACK signal may be caused by the following two factors. (a) Reception was not performed normally. (b) The final data was received. When the receiving device sets the SDAn line to low level during the ninth clock, the ACK signal becomes active (normal receive response). When bit 2 (ACKEn) of IIC control register n (IICCn) is set to 1, automatic ACK signal generation is enabled (n = 0, 1). Transmission of the eighth bit following the 7 address data bits causes bit 3 (TRCn) of IIC status register n (IICSn) to be set. When this TRCn bit's value is 0, it indicates receive mode. Therefore, ACKEn should be set to 1 (n = 0, 1). When the slave device is receiving (when TRCn = 0), if the slave device does not need to receive any more data after receiving several bytes, setting ACKEn to 0 will prevent the master device from starting transmission of the subsequent data. Similarly, when the master device is receiving (when TRCn = 0) and the subsequent data is not needed and when either a restart condition or a stop condition should therefore be output, setting ACKEn to 0 will prevent the ACK signal from being returned. This prevents the MSB data from being output via the SDAn line (i.e., stops transmission) during transmission from the slave device. Figure 10-30. ACK Signal Remark 356 SCLn 1 2 3 4 5 6 7 SDAn AD6 AD5 AD4 AD3 AD2 AD1 AD0 n = 0, 1 User's Manual U13850EJ6V0UD 8 9 R/W ACK CHAPTER 10 SERIAL INTERFACE FUNCTION When the local address is received, an ACK signal is automatically output in synchronization with the falling edge of the SCLn's eighth clock regardless of the ACKEn value. No ACK signal is output if the received address is not a local address (n = 0, 1). The ACK signal output method during data reception is based on the wait timing setting, as described below. When 8-clock wait is selected: ACK signal is output at the falling edge of the SCLn's eighth clock if ACKEn is set to 1 before wait cancellation. When 9-clock wait is selected: ACK signal is automatically output at the falling edge of the SCLn's eighth clock if ACKEn has already been set to 1. (5) Stop condition When the SCLn pin is at high level, changing the SDAn pin from low level to high level generates a stop condition (n = 0, 1). A stop condition is a signal that the master device outputs to the slave device when serial transfer has been completed. The slave device includes hardware that detects stop conditions. Figure 10-31. Stop Condition H SCL SDA Remark n = 0, 1 A stop condition is generated when bit 0 (SPTn) of IIC control register n (IICCn) is set to 1. When the stop condition is detected, bit 0 (SPDn) of IIC status register n (IICSn) is set to 1 and INTIICn is generated when bit 4 (SPIEn) of IICCn is set to 1 (n = 0, 1). User's Manual U13850EJ6V0UD 357 CHAPTER 10 (6) SERIAL INTERFACE FUNCTION Wait signal (WAIT) The wait signal (WAIT) is used to notify the communication partner that a device (master or slave) is preparing to transmit or receive data (i.e., is in a wait state). Setting the SCLn pin to low level notifies the communication partner of the wait status. When wait status has been canceled for both the master and slave devices, the next data transfer can begin (n = 0, 1). Figure 10-32. Wait Signal (1/2) (a) When master device has a nine-clock wait and slave device has an eight-clock wait (master: transmission, slave: reception, and ACKEn = 1) Master Master returns to high Wait after output impedance but slave is in wait state (low level). of ninth clock. IIC0 data write (cancel wait) IIC0 6 SCL 7 8 1 9 2 3 Slave Wait after output of eighth clock. FFH is written to IIC0 or WREL is set to 1. IIC0 SCL ACKE H Transfer lines Remark 358 SCL 6 7 8 SDA D2 D1 D0 9 ACK n = 0, 1 User's Manual U13850EJ6V0UD 1 2 3 D7 D6 D5 CHAPTER 10 SERIAL INTERFACE FUNCTION Figure 10-32. Wait Signal (2/2) (b) When master and slave devices both have a nine-clock wait (master: transmission, slave: reception, and ACKEn = 1) Master and slave both wait after output of ninth clock. IIC0 data write (cancel wait) Master IIC0 6 SCL 7 8 9 1 2 3 Slave FFH is written to IIC0 or WREL is set to 1. IIC0 SCL ACKE H Transfer lines SCL 6 7 8 9 SDA D2 D1 D0 ACK 1 D7 2 3 D6 D5 Output according to previously set ACKE value Remarks 1. ACKEn: Bit 2 of IIC control register n (IICCn) WRELn: Bit 5 of IIC control register n (IICCn) 2. n = 0, 1 A wait may be automatically generated depending on the setting for bit 3 (WTIMn) of IIC control register n (IICCn) (n = 0, 1). Normally, when bit 5 (WRELn) of IICCn is set to 1 or when FFH is written to IIC shift register n (IICn), the wait status is canceled and the transmitting side writes data to IICn to cancel the wait status. The master device can also cancel the wait status via either of the following methods. * By setting bit 1 (STTn) of IICCn to 1 * By setting bit 0 (SPTn) of IICCn to 1 User's Manual U13850EJ6V0UD 359 CHAPTER 10 SERIAL INTERFACE FUNCTION 2 10.4.5 I C interrupt requests (INTIICn) The following shows the value of IIC status register n (IICSn) at the INTIICn interrupt request generation timing and at the INTIICn interrupt timing (n = 0, 1). (1) Master device operation (a) Start ~ Address ~ Data ~ Data ~ Stop (normal transmission/reception) <1> When WTIMn = 0 SPTn = 1 ST AD6 to AD0 RW AK D7 to D0 1 AK D7 to D0 2 AK 3 SP 5 4 1: IICSn = 10XXX110B 2: IICSn = 10XXX000B 3: IICSn = 10XXX000B (WTIMn = 0) 4: IICSn = 10XXXX00B 5: IICSn = 00000001B Remark : Always generated : Generated only when SPIEn = 1 X: don't care n = 0, 1 <2> When WTIMn = 1 SPTn = 1 ST AD6 to AD0 RW AK D7 to D0 1 AK D7 to D0 2 1: IICSn = 10XXX110B 2: IICSn = 10XXX100B 3: IICSn = 10XXXX00B 4: IICSn = 00000001B Remark : Always generated : Generated only when SPIEn = 1 X: don't care n = 0, 1 360 User's Manual U13850EJ6V0UD AK SP 3 4 CHAPTER 10 SERIAL INTERFACE FUNCTION (b) Start ~ Address ~ Data ~ Start ~ Address ~ Data ~ Stop (restart) <1> When WTIMn = 0 STTn = 1 ST AD6 to AD0 RW AK D7 to D0 1 AK 2 ST SPTn = 1 AD6 to AD0 RW AK 3 D7 to D0 4 AK 5 SP 6 7 1: IICSn = 10XXX110B 2: IICSn = 10XXX000B (WTIMn = 1) 3: IICSn = 10XXXX00B (WTIMn = 0) 4: IICSn = 10XXX110B (WTIMn = 0) 5: IICSn = 10XXX000B (WTIMn = 1) 6: IICSn = 10XXXX00B 7: IICSn = 00000001B Remark : Always generated : Generated only when SPIEn = 1 X: don't care n = 0, 1 <2> When WTIMn = 1 STTn = 1 ST AD6 to AD0 RW AK D7 to D0 AK 1 ST SPTn = 1 AD6 to AD0 2 RW AK D7 to D0 3 AK SP 4 5 1: IICSn = 10XXX110B 2: IICSn = 10XXXX00B 3: IICSn = 10XXX110B 4: IICSn = 10XXXX00B 5: IICSn = 00000001B Remark : Always generated : Generated only when SPIEn = 1 X: don't care n = 0, 1 User's Manual U13850EJ6V0UD 361 CHAPTER 10 SERIAL INTERFACE FUNCTION (c) Start ~ Code ~ Data ~ Data ~ Stop (extension code transmission) <1> When WTIMn = 0 SPTn = 1 ST AD6 to AD0 RW AK D7 to D0 1 AK D7 to D0 2 AK 3 SP 4 5 1: IICSn = 1010X110B 2: IICSn = 1010X000B 3: IICSn = 1010X000B (WTIMn = 1) 4: IICSn = 1010XX00B 5: IICSn = 00000001B Remark : Always generated : Generated only when SPIEn = 1 X: don't care n = 0, 1 <2> When WTIMn = 1 SPTn = 1 ST AD6 to AD0 RW AK D7 to D0 1 AK D7 to D0 2 1: IICSn = 1010X110B 2: IICSn = 1010X100B 3: IICSn = 1010XX00B 4: IICSn = 00000001B Remark : Always generated : Generated only when SPIEn = 1 X: don't care n = 0, 1 362 User's Manual U13850EJ6V0UD AK SP 3 4 CHAPTER 10 SERIAL INTERFACE FUNCTION (2) Slave device operation (when receiving slave address data (match with SVAn)) (a) Start ~ Address ~ Data ~ Data ~ Stop <1> When WTIMn = 0 ST AD6 to AD0 RW AK D7 to D0 1 AK D7 to D0 2 AK SP 4 3 1: IICSn = 0001X110B 2: IICSn = 0001X000B 3: IICSn = 0001X000B 4: IICSn = 00000001B Remark : Always generated : Generated only when SPIEn = 1 X: don't care n = 0, 1 <2> When WTIMn = 1 ST AD6 to AD0 RW AK D7 to D0 1 AK D7 to D0 2 AK SP 3 4 1: IICSn = 0001X110B 2: IICSn = 0001X100B 3: IICSn = 0001XX00B 4: IICSn = 00000001B Remark : Always generated : Generated only when SPIEn = 1 X: don't care n = 0, 1 User's Manual U13850EJ6V0UD 363 CHAPTER 10 SERIAL INTERFACE FUNCTION (b) Start ~ Address ~ Data ~ Start ~ Address ~ Data ~ Stop <1> When WTIMn = 0 (after restart, match with SVAn) ST AD6 to AD0 RW AK D7 to D0 1 AK ST AD6 to AD0 RW AK 2 D7 to D0 3 AK SP 4 5 1: IICSn = 0001X110B 2: IICSn = 0001X000B 3: IICSn = 0001X110B 4: IICSn = 0001X000B 5: IICSn = 00000001B Remark : Always generated : Generated only when SPIEn = 1 X: don't care n = 0, 1 <2> When WTIMn = 1 (after restart, match with SVAn) ST AD6 to AD0 RW AK D7 to D0 AK 1 ST AD6 to AD0 2 1: IICSn = 0001X110B 2: IICSn = 0001XX00B 3: IICSn = 0001X110B 4: IICSn = 0001XX00B 5: IICSn = 00000001B Remark : Always generated : Generated only when SPIEn = 1 X: don't care n = 0, 1 364 User's Manual U13850EJ6V0UD RW AK D7 to D0 3 AK SP 4 5 CHAPTER 10 SERIAL INTERFACE FUNCTION (c) Start ~ Address ~ Data ~ Start ~ Code ~ Data ~ Stop <1> When WTIMn = 0 (after restart, extension code reception) ST AD6 to AD0 RW AK D7 to D0 1 AK ST AD6 to AD0 RW 2 AK D7 to D0 3 AK SP 4 5 1: IICSn = 0001X110B 2: IICSn = 0001X000B 3: IICSn = 0010X010B 4: IICSn = 0010X000B 5: IICSn = 00000001B Remark : Always generated : Generated only when SPIEn = 1 X: don't care n = 0, 1 <2> When WTIMn = 1 (after restart, extension code reception) ST AD6 to AD0 RW AK D7 to D0 AK 1 ST AD6 to AD0 2 RW AK 3 D7 to D0 4 AK SP 5 6 1: IICSn = 0001X110B 2: IICSn = 0001XX00B 3: IICSn = 0010X010B 4: IICSn = 0010X110B 5: IICSn = 0010XX00B 6: IICSn = 00000001B Remark : Always generated : Generated only when SPIEn = 1 X: don't care n = 0, 1 User's Manual U13850EJ6V0UD 365 CHAPTER 10 SERIAL INTERFACE FUNCTION (d) Start ~ Address ~ Data ~ Start ~ Address ~ Data ~ Stop <1> When WTIMn = 0 (after restart, mismatch with address (= not extension code)) ST AD6 to AD0 RW AK D7 to D0 1 AK ST AD6 to AD0 RW AK 2 D7 to D0 AK SP 3 4 1: IICSn = 0001X110B 2: IICSn = 0001X000B 3: IICSn = 00000X10B 4: IICSn = 00000001B Remark : Always generated : Generated only when SPIEn = 1 X: don't care n = 0, 1 <2> When WTIMn = 1 (after restart, mismatch with address (= not extension code)) ST AD6 to AD0 RW AK D7 to D0 AK 1 ST AD6 to AD0 2 1: IICSn = 0001X110B 2: IICSn = 0001XX00B 3: IICSn = 00000X10B 4: IICSn = 00000001B Remark : Always generated : Generated only when SPIEn = 1 X: don't care n = 0, 1 366 User's Manual U13850EJ6V0UD RW AK D7 to D0 3 AK SP 4 CHAPTER 10 SERIAL INTERFACE FUNCTION (3) Slave device operation (when receiving extension code) (a) Start ~ Code ~ Data ~ Data ~ Stop <1> When WTIMn = 0 ST AD6 to AD0 RW AK D7 to D0 1 AK D7 to D0 2 AK SP 4 3 1: IICSn = 0010X010B 2: IICSn = 0010X000B 3: IICSn = 0010X000B 4: IICSn = 00000001B Remark : Always generated : Generated only when SPIEn = 1 X: don't care n = 0, 1 <2> When WTIMn = 1 ST AD6 to AD0 RW AK 1 D7 to D0 2 AK D7 to D0 3 AK SP 4 5 1: IICSn = 0010X010B 2: IICSn = 0010X110B 3: IICSn = 0010X100B 4: IICSn = 0010XX00B 5: IICSn = 00000001B Remark : Always generated : Generated only when SPIEn = 1 X: don't care n = 0, 1 User's Manual U13850EJ6V0UD 367 CHAPTER 10 SERIAL INTERFACE FUNCTION (b) Start ~ Code ~ Data ~ Start ~ Address ~ Data ~ Stop <1> When WTIMn = 0 (after restart, match with SVAn) ST AD6 to AD0 RW AK D7 to D0 1 AK ST AD6 to AD0 RW AK 2 D7 to D0 3 AK SP 4 5 1: IICSn = 0010X010B 2: IICSn = 0010X000B 3: IICSn = 0001X110B 4: IICSn = 0001X000B 5: IICSn = 00000001B Remark : Always generated : Generated only when SPIEn = 1 X: don't care n = 0, 1 <2> When WTIMn = 1 (after restart, match with SVAn) ST AD6 to AD0 RW AK 1 D7 to D0 AK 2 ST AD6 to AD0 3 1: IICSn = 0010X010B 2: IICSn = 0010X110B 3: IICSn = 0010XX00B 4: IICSn = 0001X110B 5: IICSn = 0001XX00B 6: IICSn = 00000001B Remark : Always generated : Generated only when SPIEn = 1 X: don't care n = 0, 1 368 User's Manual U13850EJ6V0UD RW AK D7 to D0 4 AK SP 5 6 CHAPTER 10 SERIAL INTERFACE FUNCTION (c) Start ~ Code ~ Data ~ Start ~ Code ~ Data ~ Stop <1> When WTIMn = 0 (after restart, extension code reception) ST AD6 to AD0 RW AK D7 to D0 1 AK ST AD6 to AD0 RW 2 AK D7 to D0 3 AK SP 4 5 1: IICSn = 0010X010B 2: IICSn = 0010X000B 3: IICSn = 0010X010B 4: IICSn = 0010X000B 5: IICSn = 00000001B Remark : Always generated : Generated only when SPIEn = 1 X: don't care n = 0, 1 <2> When WTIMn = 1 (after restart, extension code reception) ST AD6 to AD0 RW AK 1 D7 to D0 AK 2 ST AD6 to AD0 3 RW AK 4 D7 to D0 5 AK SP 6 7 1: IICSn = 0010X010B 2: IICSn = 0010X110B 3: IICSn = 0010XX00B 4: IICSn = 0010X010B 5: IICSn = 0010X110B 6: IICSn = 0010XX00B 7: IICSn = 00000001B Remark : Always generated : Generated only when SPIEn = 1 X: don't care n = 0, 1 User's Manual U13850EJ6V0UD 369 CHAPTER 10 SERIAL INTERFACE FUNCTION (d) Start ~ Code ~ Data ~ Start ~ Address ~ Data ~ Stop <1> When WTIMn = 0 (after restart, mismatch with address (= not extension code)) ST AD6 to AD0 RW AK D7 to D0 1 AK ST AD6 to AD0 RW AK 2 D7 to D0 AK SP 3 4 1: IICSn = 0010X010B 2: IICSn = 0010X000B 3: IICSn = 00000X10B 4: IICSn = 00000001B Remark : Always generated : Generated only when SPIEn = 1 X: don't care n = 0, 1 <2> When WTIMn = 1 (after restart, mismatch with address (= not extension code)) ST AD6 to AD0 RW AK 1 D7 to D0 AK 2 ST AD6 to AD0 3 1: IICSn = 0010X010B 2: IICSn = 0010X110B 3: IICSn = 0010XX00B 4: IICSn = 00000X10B 5: IICSn = 00000001B Remark : Always generated : Generated only when SPIEn = 1 X: don't care n = 0, 1 370 User's Manual U13850EJ6V0UD RW AK D7 to D0 4 AK SP 5 CHAPTER 10 SERIAL INTERFACE FUNCTION (4) Operation without communication (a) Start ~ Code ~ Data ~ Data ~ Stop ST AD6 to AD0 RW AK D7 to D0 AK D7 to D0 AK SP 1 1: IICSn = 00000001B Remark : Generated only when SPIEn = 1 n = 0, 1 (5) Arbitration loss operation (operation as slave after arbitration loss) (a) When arbitration loss occurs during transmission of slave address data <1> When WTIMn = 0 ST AD6 to AD0 RW AK D7 to D0 1 AK D7 to D0 2 AK SP 4 3 1: IICSn = 0101X110B (Example: when ALDn is read during interrupt servicing) 2: IICSn = 0001X000B 3: IICSn = 0001X000B 4: IICSn = 00000001B Remark : Always generated : Generated only when SPIEn = 1 X: don't care n = 0, 1 <2> When WTIMn = 1 ST AD6 to AD0 RW AK D7 to D0 1 AK D7 to D0 2 AK SP 3 4 1: IICSn = 0101X110B (Example: when ALDn is read during interrupt servicing) 2: IICSn = 0001X100B 3: IICSn = 0001XX00B 4: IICSn = 00000001B Remark : Always generated : Generated only when SPIEn = 1 X: don't care n = 0, 1 User's Manual U13850EJ6V0UD 371 CHAPTER 10 SERIAL INTERFACE FUNCTION (b) When arbitration loss occurs during transmission of extension code <1> When WTIMn = 0 ST AD6 to AD0 RW AK D7 to D0 1 AK D7 to D0 2 AK SP 3 4 1: IICSn = 0110X010B (Example: when ALDn is read during interrupt servicing) 2: IICSn = 0010X000B 3: IICSn = 0010X000B 4: IICSn = 00000001B Remark : Always generated : Generated only when SPIEn = 1 X: don't care n = 0, 1 <2> When WTIMn = 1 ST AD6 to AD0 RW AK 1 D7 to D0 2 AK D7 to D0 3 AK SP 4 1: IICSn = 0110X010B (Example: when ALDn is read during interrupt servicing) 2: IICSn = 0010X110B 3: IICSn = 0010X100B 4: IICSn = 0010XX00B 5: IICSn = 00000001B Remark : Always generated : Generated only when SPIEn = 1 X: don't care n = 0, 1 372 User's Manual U13850EJ6V0UD 5 CHAPTER 10 SERIAL INTERFACE FUNCTION (6) Operation when arbitration loss occurs (no communication after arbitration loss) (a) When arbitration loss occurs during transmission of slave address data ST AD6 to AD0 RW AK D7 to D0 AK D7 to D0 AK SP 1 2 1: IICSn = 01000110B (Example: when ALDn is read during interrupt servicing) 2: IICSn = 00000001B Remark : Always generated : Generated only when SPIEn = 1 n = 0, 1 (b) When arbitration loss occurs during transmission of extension code ST AD6 to AD0 RW AK D7 to D0 AK D7 to D0 SP 2 1 1: AK IICSn = 0110X010B (Example: when ALDn is read during interrupt servicing) IICCn's LRELn is set to 1 by software 2: IICSn = 00000001B Remark : Always generated : Generated only when SPIEn = 1 X: don't care n = 0, 1 User's Manual U13850EJ6V0UD 373 CHAPTER 10 SERIAL INTERFACE FUNCTION (c) When arbitration loss occurs during data transfer <1> When WTIMn = 0 ST AD6 to AD0 RW AK D7 to D0 1 AK D7 to D0 AK SP 2 3 1: IICSn = 10001110B 2: IICSn = 01000000B (Example: when ALDn is read during interrupt servicing) 3: IICSn = 00000001B Remark : Always generated : Generated only when SPIEn = 1 n = 0, 1 <2> When WTIMn = 1 ST AD6 to AD0 RW AK D7 to D0 1 AK D7 to D0 AK SP 2 1: IICSn = 10001110B 2: IICSn = 01000100B (Example: when ALDn is read during interrupt servicing) 3: IICSn = 00000001B Remark : Always generated : Generated only when SPIEn = 1 n = 0, 1 374 User's Manual U13850EJ6V0UD 3 CHAPTER 10 SERIAL INTERFACE FUNCTION (d) When loss occurs due to restart condition during data transfer <1> Not extension code (Example: mismatches with SVAn) ST AD6 to AD0 RW AK D7 to Dn ST AD6 to AD0 RW AK 1 D7 to D0 AK SP 2 3 1: IICSn = 1000X110B 2: IICSn = 01000110B (Example: when ALDn is read during interrupt servicing) 3: IICSn = 00000001B Remark : Always generated : Generated only when SPIEn = 1 X: don't care Dn = D6 to D0 n = 0, 1 <2> Extension code ST AD6 to AD0 RW AK D7 to Dn ST AD6 to AD0 1 RW AK D7 to D0 2 AK SP 3 1: IICSn = 1000X110B 2: IICSn = 0110X010B (Example: when ALDn is read during interrupt servicing) IICCn's LRELn is set to 1 by software 3: IICSn = 00000001B Remark : Always generated : Generated only when SPIEn = 1 X: don't care Dn = D6 to D0 n = 0, 1 User's Manual U13850EJ6V0UD 375 CHAPTER 10 SERIAL INTERFACE FUNCTION (e) When loss occurs due to stop condition during data transfer ST AD6 to AD0 RW AK D7 to Dn SP 1 2 1: IICSn = 1000X110B 2: IICSn = 01000001B Remark : Always generated : Generated only when SPIEn = 1 X: don't care Dn = D6 to D0 n = 0, 1 (f) When arbitration loss occurs due to low-level data when attempting to generate a restart condition When WTIMn = 1 STTn = 1 ST AD6 to AD0 RW AK D7 to D0 1 AK D7 to D0 2 AK D7 to D0 3 1: IICSn = 1000X110B 2: IICSn = 1000XX00B 3: IICSn = 01000100B (Example: when ALDn is read during interrupt servicing) 4: IICSn = 00000001B Remark : Always generated : Generated only when SPIEn = 1 X: don't care n = 0, 1 376 User's Manual U13850EJ6V0UD AK SP 4 CHAPTER 10 SERIAL INTERFACE FUNCTION (g) When arbitration loss occurs due to a stop condition when attempting to generate a restart condition When WTIMn = 1 STTn = 1 ST AD6 to AD0 RW AK D7 to D0 AK 1 SP 3 2 1: IICSn = 1000X110B 2: IICSn = 1000XX00B 3: IICSn = 01000001B Remark : Always generated : Generated only when SPIEn = 1 X: don't care n = 0, 1 (h) When arbitration loss occurs due to low-level data when attempting to generate a stop condition When WTIMn = 1 SPTn = 1 ST AD6 to AD0 RW AK D7 to D0 1 AK D7 to D0 2 AK D7 to D0 3 AK SP 4 1: IICSn = 1000X110B 2: IICSn = 1000XX00B 3: IICSn = 01000000B (Example: when ALDn is read during interrupt servicing) 4: IICSn = 00000001B Remark : Always generated : Generated only when SPIEn = 1 X: don't care n = 0, 1 User's Manual U13850EJ6V0UD 377 CHAPTER 10 SERIAL INTERFACE FUNCTION 10.4.6 Interrupt request (INTIICn) generation timing and wait control The setting of bit 3 (WTIMn) in IIC control register n (IICCn) determines the timing by which INTIICn is generated and the corresponding wait control, as shown below (n = 0, 1). Table 10-10. INTIICn Generation Timing and Wait Control WTIMn During Slave Device Operation Address Notes 1, 2 9 0 Notes 1, 2 9 1 Notes 1. Data Reception During Master Device Operation Data Transmission Note 2 Note 2 8 8 Note 2 Note 2 9 9 Address Data Reception Data Transmission 9 8 8 9 9 9 The slave device's INTIICn signal and wait period occurs at the falling edge of the ninth clock only when there is a match with the address set to slave address register n (SVAn). At this point, ACK is output regardless of the value set to IICCn's bit 2 (ACKEn). For a slave device that has received an extension code, INTIICn occurs at the falling edge of the eighth clock. 2. If the received address does not match the contents of slave address register n (SVAn), neither INTIICn nor a wait occurs. Remarks 1. The numbers in the table indicate the number of the serial clock's clock signals. Interrupt requests and wait control are both synchronized with the falling edge of these clock signals. 2. n = 0, 1 (1) During address transmission/reception * Slave device operation: Interrupt and wait timing are determined regardless of the WTIMn bit. * Master device operation: Interrupt and wait timing occur at the falling edge of the ninth clock regardless of the WTIMn bit. (2) During data reception * Master/slave device operation: Interrupt and wait timing are determined according to the WTIMn bit. (3) During data transmission * Master/slave device operation: Interrupt and wait timing are determined according to the WTIMn bit. (4) Wait cancellation method The four wait cancellation methods are as follows. * By setting bit 5 (WRELn) of IIC control register n (IICCn) to 1 * By writing to IIC shift register n (IICn) * By start condition setting (bit 1 (STTn) of IIC control register n (IICCn) = 1) * By step condition setting (bit 0 (SPTn) of IIC control register n (IICCn) = 1) When an 8-clock wait has been selected (WTIMn = 0), the output level of ACK must be determined prior to wait cancellation. Remark 378 n = 0, 1 User's Manual U13850EJ6V0UD CHAPTER 10 (5) SERIAL INTERFACE FUNCTION Stop condition detection INTIICn is generated when a stop condition is detected. Remark n = 0, 1 10.4.7 Address match detection method 2 When in I C bus mode, the master device can select a particular slave device by transmitting the corresponding slave address. Address match detection is performed automatically by hardware. An interrupt request (INTIICn) occurs when a local address has been set to slave address register n (SVAn) and when the address set to SVAn matches the slave address sent by the master device, or when an extension code has been received (n = 0, 1). 10.4.8 Error detection 2 In I C bus mode, the status of the serial data bus (SDAn) during data transmission is captured by IIC shift register n (IICn) of the transmitting device, so the IICn data prior to transmission can be compared with the transmitted IICn data to enable detection of transmission errors. A transmission error is judged as having occurred when the compared data values do not match (n = 0, 1). 10.4.9 Extension code (1) When the higher 4 bits of the receive address are either 0000 or 1111, the extension code flag (EXCn) is set for extension code reception and an interrupt request (INTIICn) is issued at the falling edge of the eighth clock (n = 0, 1). The local address stored in slave address register n (SVAn) is not affected. (2) If 11110xx0 is set to SVAn by a 10-bit address transfer and 11110xx0 is transferred from the master device, the results are as follows. Note that INTIICn occurs at the falling edge of the eighth clock (n = 0, 1). * Higher 4 bits of data match: EXCn = 1 * 7 bits of data match: COIn = 1 Note Note Note EXCn: Bit 5 of IIC status register n (IICSn) COIn: Bit 4 of IIC status register n (IICSn) (3) Since the processing after the interrupt request occurs differs according to the data that follows the extension code, such processing is performed by software. For example, when operation as a slave is not desired after the extension code is received, set bit 6 (LRELn) of IIC control register n (IICCn) to 1 and the CPU will enter the next communication wait state. User's Manual U13850EJ6V0UD 379 CHAPTER 10 SERIAL INTERFACE FUNCTION Table 10-11. Extension Code Bit Definitions Slave Address R/W Bit Description 0000 000 0 General call address 0000 000 1 Start byte 0000 001 X CBUS address 0000 010 X Address that is reserved for different bus format 1111 0xx X 10-bit slave address specification 10.4.10 Arbitration When several master devices simultaneously output a start condition (when STTn is set to 1 before STDn is set to 1 Note ), communication among the master devices is performed as the number of clocks is adjusted until the data differs. This kind of operation is called arbitration (n = 0, 1). When one of the master devices loses in arbitration, an arbitration loss flag (ALDn) in IIC status register n (IICSn) is set via the timing by which the arbitration loss occurred, and the SCLn and SDAn lines are both set for high impedance, which releases the bus (n = 0, 1). The arbitration loss is detected based on the timing of the next interrupt request (the eighth or ninth clock, when a stop condition is detected, etc.) and the ALDn = 1 setting that has been made by software (n = 0, 1). 2 For details of interrupt request timing, see 10.4.5 I C interrupt requests (INTIICn). Note STDn: Bit 1 of IIC status register n (IICSn) STTn: Bit 1 of IIC control register n (IICCn) 380 User's Manual U13850EJ6V0UD CHAPTER 10 SERIAL INTERFACE FUNCTION Figure 10-33. Arbitration Timing Example Master 1 Hi-Z SCL Hi-Z SDA Master 1 loses arbitration Master 2 SCL SDA Transfer lines SCL SDA Remark n = 0, 1 Table 10-12. Status During Arbitration and Interrupt Request Generation Timing Status During Arbitration Interrupt Request Generation Timing At falling edge of eighth or ninth clock following byte transfer During address transmission Note 1 Read/write data after address transmission During extension code transmission Read/write data after extension code transmission During data transmission During ACK signal transfer period after data reception When restart condition is detected during data transfer Note 2 When stop condition is detected during data transfer When stop condition is output (when SPIEn = 1) When data is at low level while attempting to output a restart condition At falling edge of eighth or ninth clock following byte transfer When stop condition is detected while attempting to output a restart condition When stop condition is output (when SPIEn = 1) When data is at low level while attempting to output a stop condition At falling edge of eighth or ninth clock following byte transfer Note 1 Note 2 Note 1 When SCLn is at low level while attempting to output a restart condition User's Manual U13850EJ6V0UD 381 CHAPTER 10 Notes 1. SERIAL INTERFACE FUNCTION When WTIMn (bit 3 of the IIC control register n (IICCn)) = 1, an interrupt request occurs at the falling edge of the ninth clock. When WTIMn = 0 and the extension code's slave address is received, an interrupt request occurs at the falling edge of the eighth clock (n = 0, 1). 2. When there is a possibility that arbitration will occur, set SPIEn = 1 for master device operation (n = 0, 1). Remark SPIEn: Bit 5 of IIC control register n (IICCn) 10.4.11 Wakeup function 2 The I C bus slave function is a function that generates an interrupt request (INTIICn) when a local address and extension code have been received. This function makes processing more efficient by preventing unnecessary interrupt requests from occurring when addresses do not match. When a start condition is detected, wakeup standby mode is set. This wakeup standby mode is in effect while addresses are transmitted due to the possibility that an arbitration loss may change the master device (which has output a start condition) to a slave device. However, when a stop condition is detected, bit 5 (SPIEn) of IIC control register n (IICCn) is set regardless of the wakeup function, and this determines whether interrupt requests are enabled or disabled (n = 0, 1). 382 User's Manual U13850EJ6V0UD CHAPTER 10 SERIAL INTERFACE FUNCTION 10.4.12 Communication reservation (1) When communication reservation function is enabled (IICRSVn of IICFn register = 0) To start master device communications when not currently using a bus, a communication reservation can be made to enable transmission of a start condition when the bus is released. There are two modes under which the bus is not used. * When arbitration results in neither master nor slave operation * When an extension code is received and slave operation is disabled (ACK is not returned and the bus was released when LRELn of IIC control register n (IICCn) was set to "1") (n = 0, 1). If bit 1 (STTn) of IICCn is set while the bus is not used, a start condition is automatically generated and wait status is set after the bus is released (after a stop condition is detected). When the bus release is detected (when a stop condition is detected), writing to IIC shift register n (IICn) causes the master's address transfer to start. At this point, IICCn's bit 4 (SPIEn) should be set (n = 0, 1). When STTn has been set, the operation mode (as start condition or as communication reservation) is determined according to the bus status (n = 0, 1). If the bus has been released ............................................................a start condition is generated If the bus has not been released (standby mode) ............................communication reservation To detect which operation mode has been determined for STTn, set STTn, wait for the wait period, then check the MSTSn (bit 7 of IIC status register n (IICSn)) (n = 0, 1). Wait periods, which should be set via software, are listed in Table 10-13. These wait periods can be set via the settings for bits 3, 1, and 0 (SMCn, CLn1, and CLn0) in IIC clock selection register n (IICCLn) (n = 0, 1). Table 10-13. Wait Periods SMCn CLn1 CLn0 0 0 0 26 clocks 0 0 1 46 clocks 0 1 0 92 clocks 0 1 1 37 clocks 1 0 0 16 clocks 1 0 1 1 1 0 32 clocks 1 1 1 13 clocks Remark Wait Period n = 0, 1 User's Manual U13850EJ6V0UD 383 CHAPTER 10 SERIAL INTERFACE FUNCTION The communication reservation timing is shown below. Figure 10-34. Communication Reservation Timing Program processing Hardware processing SCL 1 2 3 4 STT =1 Write to IIC0 Set SPD and INTIIC0 Communication reservation 5 6 7 8 9 Set STD 1 2 3 4 5 6 SDA Output by master with bus access IICn: IIC shift register n STTn: Bit 1 of IIC control register n (IICCn) STDn: Bit 1 of IIC status register n (IICSn) SPDn: Bit 0 of IIC status register n (IICSn) Remark n = 0, 1 Communication reservations are accepted via the following timing. After bit 1 (STDn) of IIC status register n (IICSn) is set to "1", a communication reservation can be made by setting bit 1 (STTn) of IIC control register n (IICCn) to "1" before a stop condition is detected (n = 0, 1). Figure 10-35. Timing for Accepting Communication Reservations SCL SDA STD SPD Standby mode Remark 384 n = 0, 1 User's Manual U13850EJ6V0UD CHAPTER 10 SERIAL INTERFACE FUNCTION The communication reservation flowchart is illustrated below. Figure 10-36. Communication Reservation Flowchart DI SET1 STTn Define communication reservation Wait Sets STT bit (communication reservation). Defines that communication reservation is in effect (defines and sets user flag to any part of RAM). Secures wait period set by software (see Table 10-13). Note (Communication reservation) Yes MSTSn = 0? Confirmation of communication reservation No (Generate start condition) Cancel communication reservation IICn xxH Clear user flag. IICn write operation EI Note The communication reservation operation executes a write to IIC shift register n (IICn) when a stop condition interrupt request occurs. Remark n = 0, 1 User's Manual U13850EJ6V0UD 385 CHAPTER 10 SERIAL INTERFACE FUNCTION (2) When communication reservation function is disabled (IICRSVn of IICFn register = 1) If the STTn bit of the IICn register is set when the bus is not participating in the current communication while bus communication is in progress, this request is rejected and a start condition is not generated. There are two modes under which the bus is not participating in communication. * When arbitration results in neither master nor slave operation * When an extension code is received and slave operation is disabled (ACK is not returned and the bus was released when LRELn of IIC control register n (IICCn) was set to "1") (n = 0, 1). To detect whether a start condition was generated or the request was rejected, check the STCFn flag of the IICFn register. Wait for the period shown in Table 10-14 using software since it takes the period to set the STCFn flag from when STTn = 1 is set. Table 10-14. Wait Time IICCEn1 IICCEn0 CLn1 CLn0 Wait Time X X 0 0 3 clocks X X 0 1 3 clocks X X 1 0 6 clocks 0 0 1 1 3xN 0 1 1 1 6 clocks 1 0 1 1 9 clocks Remarks 1. N: TM2, TM3 output X: Don't care 2. n = 0, 1 Caution Do not set STTn = 1 if the slave status is entered on an address match or extension code reception (at the timing shown in Figure 10-37). If it is set, the communication reservation status is entered. Figure 10-37. Timing at Which STTn = 1 Cannot Be Set SDAn AD6 AD5 AD4 AD3 AD2 AD1 AD0 R/W ACK D7 D6 D5 D2 D1 D0 ACK SCLn IICBSYn Start condition 386 When COIn = 1 or EXCn = 1, setting STTn = 1 is disabled Rising edge of address 8 clock User's Manual U13850EJ6V0UD Stop condition CHAPTER 10 SERIAL INTERFACE FUNCTION Figure 10-38. Master Communication Start or Stop Flowchart DI IICBSYn = 0 ? No Yes SET1 STTn Sets STTn bit EI Wait STCFn = 0 ? EI Secures wait period by software (see Table 10-14) Bus communication status No Yes IICn XXH Remark IICn write operation Master communication stop n = 0, 1 User's Manual U13850EJ6V0UD 387 CHAPTER 10 SERIAL INTERFACE FUNCTION 10.4.13 Cautions (a) When STCENn of IICFn register = 0 2 Immediately after the I C operation is enabled, the communication status (IICBSYn of IICFn register = 1) is recognized regardless of the actual bus status. To perform master communication in the status in which the stop condition is not detected, first generate a stop condition to release the bus and then perform master communication. Use the following sequence for generating a stop condition. <1> Set IIC clock selection register n (IICCLn) <2> Set the IICEn bit of IIC control register n (IICCn) <3> Set the SPTn bit of the IICCn register (b) When STCENn of IICFn register = 1 2 Immediately after the I C operation is enabled, the bus released status (IICBSYn = 0) is recognized regardless of the actual bus status. To issue the first start condition (STTn of IICCn register = 1), check that the bus is released in order to prevent disturbing other communications. Remark n = 0, 1 388 User's Manual U13850EJ6V0UD CHAPTER 10 SERIAL INTERFACE FUNCTION 10.4.14 Communication operations (1) Master operations The following shows an example of the master communication flowchart when the communication reservation function is enabled (IICRSVn = 0) and when communication is started after a stop condition is detected (STCENn = 0). Figure 10-39. Master Operation Flowchart (1) START IICCLn XXH Select transfer clock. IICCn XXH IICEn = SPIEn = WTIMn = 1 INTIICn = 1? No Yes (stop condition detection) STTn = 1 Wait period secured by software (see Table 10-13) Wait MSTSn = 1? No Communication reservation Yes (start condition generation) INTIICn = 1? No Yes Start IICn write transfer INTIICn = 1? Stop condition detection, start condition generation due to communication reservation No Yes ACKDn = 1? No Generate stop condition (no slave with matching address) Yes Address transfer completion TRCn = 1? No (receive) End Yes (transmit) Start IICn write transfer WTIMn = 0 ACKEn = 1 INTIICn = 1? No WRELn = 1 Start reception Data processing ACKDn = 1? INTIICn = 1? No Yes No No (restart) Yes Data processing Transfer complete? Transfer complete? No Yes Generate stop condition SPTn = 1 Yes ACKEn = 0 End Remark n = 0, 1 User's Manual U13850EJ6V0UD 389 CHAPTER 10 SERIAL INTERFACE FUNCTION (2) Master operation The following shows an example of the master communication flowchart when the communication reservation function is disabled (IICRSVn = 1) and when communication is started without detecting a stop condition (STCENn = 1). Figure 10-40. Master Operation Flowchart (2) START IICCLn XXH IICFn XXH IICCn XXH IICEn = SPIEn = WTIMn = 1 IICBSYn = 0? Transfer clock selection IICFn register setting IICCn register initial setting No Yes STTn = 1 Insert wait STCFn = 0? Wait period secured by software (see Table 10-13) No Yes Master communication is stopped Stop master communication because bus is occupied Start IICn write transfer INTIICn = 1? No Yes (address transfer complete) ACKDn = 1? No Yes TRCn = 1? Generate stop condition (no slave with matching address) No (receive) Yes (transmit) WTIMn = 0 ACKEn = 1 End Start IICn write transfer WRELn = 1 Start reception INTIICn = 1? No Yes INTIICn = 1? Data processing No Yes Data processing ACKDn = 1? No Yes Reception completed? No Yes ACKEn = 0 No Transfer completed? (restart) Yes SPTn = 1 Generate stop condition End Remark 390 n = 0, 1 User's Manual U13850EJ6V0UD CHAPTER 10 SERIAL INTERFACE FUNCTION (3) Slave operation The following shows an example of the slave communication flowchart. Figure 10-41. Slave Operation Flowchart START IICCn XXH IICEn = 1 INTIICn = 1? No Yes EXCn = 1? Yes Bus participates in communication? No No COIn = 1? No LRELn = 1 Yes Yes TRCn = 1? No (receive) WTIMn = 0 ACKEn = 1 Yes (transmit) WTIMn = 1 Start IICn write transfer WRELn = 1 Start reception INTIICn = 1? No INTIICn = 1? No Yes Yes Data processing Data processing ACKDn = 1? Yes Transfer completed? No No Yes START (restart detection) START or STOP ACKEn = 0 STOP (stop condition detection) End Remark n = 0, 1 User's Manual U13850EJ6V0UD 391 CHAPTER 10 SERIAL INTERFACE FUNCTION 10.4.15 Timing of data communication 2 When using I C bus mode, the master device outputs an address via the serial bus to select one of several slave devices as its communication partner. After outputting the slave address, the master device transmits the TRCn bit (bit 3 of IIC status register n (IICSn)) that specifies the data transfer direction and then starts serial communication with the slave device. IIC bus shift register n (IICn)'s shift operation is synchronized with the falling edge of the serial clock (SCLn). The transmit data is transferred to the SO latch and is output (MSB first) via the SDAn pin. Data input via the SDAn pin is captured by IICn at the rising edge of SCLn. The data communication timing is shown below. Remark 392 n = 0, 1 User's Manual U13850EJ6V0UD CHAPTER 10 SERIAL INTERFACE FUNCTION Figure 10-42. Example of Master to Slave Communication (When 9-Clock Wait Is Selected for Both Master and Slave) (1/3) (a) Start condition ~ address Processing by master device IICn address IICn IICn data ACKDn STDn SPDn WTIMn H ACKEn H MSTSn STTn SPTn L WRELn L INTIICn TRCn H Transmit Transfer lines 1 SCLn 2 3 4 5 6 7 AD6 AD5 AD4 AD3 AD2 AD1 AD0 SDAn 8 9 1 2 3 4 W ACK D7 D6 D5 D4 Start condition Processing by slave device IICn FFH IICn Note ACKDn STDn SPDn WTIMn H ACKEn H MSTSn L STTn L SPTn L Note WRELn INTIICn (When EXC = 1) TRCn L Receive Note To cancel slave wait, write FFH to IICn or set WRELn. Remark n = 0, 1 User's Manual U13850EJ6V0UD 393 CHAPTER 10 SERIAL INTERFACE FUNCTION Figure 10-42. Example of Master to Slave Communication (When 9-Clock Wait Is Selected for Both Master and Slave) (2/3) (b) Data Processing by master device IICn data IICn IICn data ACKDn STDn L SPDn L WTIMn H ACKEn H MSTSn H STTn L SPTn L WRELn L INTIICn TRCn H Transmit Transfer lines SCLn 8 9 SDAn D0 1 2 3 4 5 6 7 8 D7 D6 D5 D4 D3 D2 D1 D0 9 1 2 3 D7 D6 D5 Processing by slave device IICn FFH Note IICn IICn FFH Note ACKDn STDn L SPDn L WTIMn H ACKEn H MSTSn L STTn L SPTn L Note WRELn Note INTIICn TRCn L Receive Note To cancel slave wait, write FFH to IICn or set WRELn. Remark 394 n = 0, 1 User's Manual U13850EJ6V0UD CHAPTER 10 SERIAL INTERFACE FUNCTION Figure 10-42. Example of Master to Slave Communication (When 9-Clock Wait Is Selected for Both Master and Slave) (3/3) (c) Stop condition Processing by master device IICn data IICn IICn address ACKDn STDn SPDn WTIMn H ACKEn H MSTSn STTn SPTn WRELn L INTIICn (When SPIEn = 1) TRCn H Transmit Transfer lines SCLn 1 2 3 4 5 6 7 8 SDAn D7 D6 D5 D4 D3 D2 D1 D0 9 IICn FFH Note 2 AD6 AD5 Stop condition Processing by slave device IICn 1 Start condition IICn FFH Note ACKDn STDn SPDn WTIMn H ACKEn H MSTSn L STTn L SPTn L Note WRELn Note INTIICn (When SPIEn = 1) TRCn L Receive Note To cancel slave wait, write FFH to IICn or set WRELn. Remark n = 0, 1 User's Manual U13850EJ6V0UD 395 CHAPTER 10 SERIAL INTERFACE FUNCTION Figure 10-43. Example of Slave to Master Communication (When 9-Clock Wait Is Selected for Both Master and Slave) (1/3) (a) Start condition ~ address Processing by master device IICn address IICn IICn FFH Note ACKDn STDn SPDn WTIMn H ACKEn H MSTSn STTn L SPTn Note WRELn INTIICn TRCn Transfer lines 1 SCLn 2 3 4 5 6 7 AD6 AD5 AD4 AD3 AD2 AD1 AD0 SDAn 8 9 R 1 D7 2 3 4 5 6 D6 D5 D4 D3 D2 Start condition Processing by slave device IICn data IICn ACKDn STDn SPDn WTIMn H ACKEn H MSTSn L STTn L SPTn L WRELn L INTIICn TRCn Note To cancel master wait, write FFH to IICn or set WRELn. Remark 396 n = 0, 1 User's Manual U13850EJ6V0UD CHAPTER 10 SERIAL INTERFACE FUNCTION Figure 10-43. Example of Slave to Master Communication (When 9-Clock Wait Is Selected for Both Master and Slave) (2/3) (b) Data Processing by master device IICn FFH Note IICn IICn FFH Note ACKDn STDn L SPDn L WTIMn H ACKEn H MSTSn H STTn L SPTn L Note WRELn Note INTIICn TRCn L Receive Transfer lines SCLn 8 9 SDAn D0 ACK 1 D7 2 3 4 5 6 7 8 9 D6 D5 D4 D3 D2 D1 D0 ACK 1 D7 2 3 D6 D5 Processing by slave device IICn data IICn IICn data ACKDn STDn L SPDn L WTIMn H ACKEn H MSTSn L STTn L SPTn L WRELn L INTIICn TRCn H Transmit Note To cancel master wait, write FFH to IICn or set WRELn. Remark n = 0, 1 User's Manual U13850EJ6V0UD 397 CHAPTER 10 SERIAL INTERFACE FUNCTION Figure 10-43. Example of Slave to Master Communication (When 9-Clock Wait Is Selected for Both Master and Slave) (3/3) (c) Stop condition Processing by master device IICn FFH Note IICn IICn address ACKDn STDn SPDn WTIMn H ACKEn H MSTSn STTn SPTn Note WRELn INTIICn (When SPIEn = 1) TRCn Transfer lines SCLn 1 2 3 4 5 6 7 8 SDAn D7 D6 D5 D4 D3 D2 D1 D0 9 1 N-ACK Stop condition AD6 AD5 Start condition Processing by slave device IICn data IICn ACKDn STDn SPDn WTIMn H ACKEn H MSTSn L STTn L SPTn L WRELn INTIICn (When SPIEn = 1) TRCn 398 Note To cancel master wait, write FFH to IICn or set WRELn. Remark n = 0, 1 User's Manual U13850EJ6V0UD 2 CHAPTER 10 SERIAL INTERFACE FUNCTION 10.5 Asynchronous Serial Interface (UART0, UART1) UARTn (n = 0, 1) has the following two operation modes. (1) Operation stop mode This mode is used when serial transfers are not performed. It can therefore be used to reduce power consumption. (2) Asynchronous serial interface mode This mode enables full-duplex operation which transmits and receives one byte of data after the start bit. The on-chip dedicated UARTn baud rate generator enables communications using a wide range of selectable baud rates. In addition, a baud rate based on divided clock input to the ASCKn pin can also be defined. The UARTn baud rate generator can also be used to generate a MIDI-standard baud rate (31.25 Kbps). 10.5.1 Configuration The UARTn includes the following hardware. Table 10-15. Configuration of UARTn Item Configuration Registers Transmit shift registers 0, 1 (TXS0, TXS1) Receive buffer registers 0, 1 (RXB0, RXB1) Control registers Asynchronous serial interface mode registers 0, 1 (ASIM0, ASIM1) Asynchronous serial interface status registers 0, 1 (ASIS0, ASIS1) Baud rate generator control registers 0, 1 (BRGC0, BRGC1) Baud rate generator mode control registers 00, 01 (BRGMC00, BRGMC01) Baud rate generator mode control registers 10, 11 (BRGMC10, BRGMC11) User's Manual U13850EJ6V0UD 399 CHAPTER 10 SERIAL INTERFACE FUNCTION Figure 10-44. Block Diagram of UARTn Internal bus 8 Receive buffer registers 0, 1 (RXB0, RXB1) 8 Receive shift registers 0, 1 (RX0, RX1) RXD0, RXD1 8 Transmit shift registers TXD0, TXD1 0, 1 (TXS0, TXS1) Receive control parity check INTSR0, INTSR1 Baud rate generator INTST0, INTST1 Transmit control parity addition Selector fXX to fXX/29 TMx output ASCK0, ASCK1 Remark TMx output is as follows: When UART0: TM2 When UART1: TM3 (1) Transmit shift registers 0, 1 (TXS0, TXS1) TXSn is the register for setting transmit data. Data written to TXSn is transmitted as serial data. When the data length is set to 7 bits, bit 0 to bit 6 of the data written to TXSn is transmitted as serial data. Writing data to TXSn starts the transmit operation. TXSn can be written to by an 8-bit memory manipulation instruction. It cannot be read from. RESET input sets these registers to FFH. Caution Do not write to TXSn during a transmit operation. (2) Receive shift registers 0, 1 (RX0, RX1) The RXn register converts serial data input via the RXD0 and RXD1 pins into parallel data. When one byte of data is received at RXn, the received data is transferred to receive buffer registers 0, 1(RXB0, RXB1). RX0, RX1 cannot be manipulated directly by a program. (3) Receive buffer registers 0, 1 (RXB0, RXB1) RXBn is used to hold receive data. When one byte of data is received, one byte of new receive data is transferred. When the data length is set to 7 bits, received data is sent to bit 0 to bit 6 of RXBn. In RXBn, the MSB must be set to 0. RXBn can be read by an 8-bit memory manipulation instruction. It cannot be written to. RESET input sets RXBn to FFH. 400 User's Manual U13850EJ6V0UD CHAPTER 10 SERIAL INTERFACE FUNCTION (4) Transmission controller The transmission controller controls transmit operations, such as adding a start bit, parity bit, and stop bit to data that is written to transmit shift register n (TXSn), based on the values set to asynchronous serial interface mode register n (ASIMn). (5) Reception controller The reception controller controls receive operations based on the values set to asynchronous serial interface mode register n (ASIMn). During a receive operation, it performs error checking, such as for parity errors, and sets various values to asynchronous serial interface status register n (ASISn) according to the type of error that is detected. 10.5.2 UARTn control registers UARTn uses the following registers for control function (n = 0, 1). * Asynchronous serial interface mode register n (ASIMn) * Asynchronous serial interface status register n (ASISn) * Baud rate generator control register n (BRGCn) * Baud rate generator mode control registers n0, n1 (BRGMCn0, BRGMCn1) User's Manual U13850EJ6V0UD 401 CHAPTER 10 SERIAL INTERFACE FUNCTION (1) Asynchronous serial interface mode registers 0, 1 (ASIM0, ASIM1) ASIMn is an 8-bit register that controls the serial transfer operations of UARTn. ASIMn can be set by an 8-bit or 1-bit memory manipulation instruction. RESET input clears these registers to 00H. After reset: ASIMn 00H R/W Address: FFFFF300H, FFFFF310H <7> <6> 5 4 3 2 1 0 TXEn RXEn PS1n PS0n UCLn SLn ISRMn 0 TXEn RXEn 0 0 0 (n = 0, 1) Operation mode RXDn/Pxx pin function TXDn/Pxx pin function Operation stop Port function Port function 1 UARTn mode (receive only) Serial function Port function 1 0 UARTn mode (transmit only) Port function Serial function 1 1 UARTn mode (transmit and receive) Serial function Serial function PS1n PS0n 0 0 No parity 0 1 Zero parity always added during transmission No parity detection during reception (parity errors do not occur) 1 0 Odd parity 1 1 Even parity Parity bit specification UCLn Character length specification 0 7 bits 1 8 bits SLn Stop bit length specification for transmit data 0 1 bit 1 2 bits ISRMn Receive completion interrupt control when error occurs 0 Receive completion interrupt is issued when an error occurs 1 Receive completion interrupt is not issued when an error occurs Cautions 1. Do not switch the operation mode until after the current serial transmit/receive operation has stopped. 2. Be sure to set bit 0 to 0. 402 User's Manual U13850EJ6V0UD CHAPTER 10 SERIAL INTERFACE FUNCTION (2) Asynchronous serial interface status registers 0, 1 (ASIS0, ASIS1) When a receive error occurs in asynchronous serial interface mode, these registers indicate the type of error. ASISn can be read using an 8-bit or 1-bit memory manipulation instruction. RESET input clears these registers to 00H. After reset: 00H ASISn R Address: FFFFF302H, FFFFF312H 7 6 5 4 3 <2> <1> <0> 0 0 0 0 0 PEn FEn OVEn (n = 0, 1) PEn Parity error flag 0 No parity error 1 Parity error (Transmit data parity does not match) FEn Framing error flag 0 No framing error 1 Framing errorNote 1 (Stop bit not detected) OVEn Overrun error flag 0 No overrun error 1 Overrun errorNote 2 (Next receive operation was completed before data was read from receive buffer register) Notes 1. Even if the stop bit length has been set to two bits by setting bit 2 (SLn) of asynchronous serial interface mode register n (ASIMn), stop bit detection during a receive operation only applies to a stop bit length of 1 bit. 2. Be sure to read the contents of receive buffer register n (RXBn) when an overrun error has occurred. Until the contents of RXBn are read, further overrun errors will occur when receiving data. User's Manual U13850EJ6V0UD 403 CHAPTER 10 SERIAL INTERFACE FUNCTION (3) Baud rate generator control registers 0, 1 (BRGC0, BRGC1) These registers set the serial clock for UARTn. BRGCn can be set by an 8-bit memory manipulation instruction. RESET input clears these registers to 00H. After reset: 00H BRGCn R/W Address: FFFFF304H, FFFFF314H 7 6 5 4 3 2 1 0 MDLn7 MDLn6 MDLn5 MDLn4 MDLn3 MDLn2 MDLn1 MDLn0 (n = 0, 1) MD Ln7 MD Ln6 MD Ln5 MD Ln4 MD Ln3 MD Ln2 MD Ln1 MD Ln0 Selection of input clock 0 0 0 0 0 x x x Setting prohibited - 0 0 0 0 1 0 0 0 fSCK/8 8 0 0 0 0 1 0 0 1 fSCK/9 9 0 0 0 0 1 0 1 0 fSCK/10 10 0 0 0 0 1 0 1 1 fSCK/11 11 0 0 0 0 1 1 0 0 fSCK/12 12 0 0 0 0 1 1 0 1 fSCK/13 13 0 0 0 0 1 1 1 0 fSCK/14 14 0 0 0 0 1 1 1 1 fSCK/15 15 0 0 0 1 0 0 0 0 fSCK/16 16 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * 1 1 1 1 1 1 1 1 fSCK/255 k 255 Cautions 1. The value of BRGCn becomes 00H after reset. Before starting operation, select a setting other than "Setting prohibited". Selecting the "Setting prohibited" setting in stop mode does not cause any problems. 2. If write is performed to BRGCn during communication processing, the output of the baud rate generator will be disturbed and communication will not be performed normally. Therefore, do not write to BRGCn during communication processing. Remark 404 fSCK: Source clock of 8-bit counter User's Manual U13850EJ6V0UD CHAPTER 10 SERIAL INTERFACE FUNCTION (4) Baud rate generator mode control registers n0, n1 (BRGMCn0, BRGMCn1) These registers set the UARTn source clock. BRGMCn0 and BRGMCn1 are set by an 8-bit memory manipulation instruction. RESET input clears these registers to 00H. After reset: 00H R/W BRGMCn0 Address: FFFFF30EH, FFFFF31EH 7 6 5 4 3 2 1 0 0 0 0 0 0 TPSn2 TPSn1 TPSn0 (n = 0, 1) After reset: 00H R/W BRGMCn1 Address: FFFFF320H, FFFFF322H 7 6 5 4 3 2 1 0 0 0 0 0 0 0 0 TPSn3 (n = 0, 1) TPSn3 TPSn2 TPSn1 TPSn0 8-bit counter source clock selection m 0 0 0 0 External clock (ASCKn) - 0 0 0 1 fXX 0 0 0 1 0 fXX/2 1 0 0 1 1 fXX/4 2 0 1 0 0 fXX/8 3 0 1 0 1 fXX/16 4 0 1 1 0 fXX/32 5 0 1 1 1 at n = 0: TM3 output at n = 1: TM2 output - 1 0 0 0 fXX/64 6 1 0 0 1 fXX/128 7 1 0 1 0 fXX/256 8 1 0 1 1 fXX/512 9 1 1 0 0 Setting prohibited - 1 1 0 1 - 1 1 1 0 - 1 1 1 1 - Cautions 1. If write is performed to BRGMCn0, n1 during communication processing, the output of the baud rate generator will be disturbed and communication will not be performed normally. Therefore, do not write to BRGMCn0, n1 during communication processing. 2. Be sure to set bits 7 to 3 of the BRGMCn0 to 0. Remarks 1. fSCK: Source clock of 8-bit counter 2. When the output of the timer is selected as the clock, it is not necessary to set the P26/TO2/TI2 and P27/TO3/TI3 pins in the timer output mode. User's Manual U13850EJ6V0UD 405 CHAPTER 10 SERIAL INTERFACE FUNCTION 10.5.3 Operations UARTn has the following two operation modes. * Operation stop mode * Asynchronous serial interface mode (1) Operation stop mode In this mode serial transfers are not performed, allowing a reduction in power consumption. When in operation stop mode, pins can be used as normal ports. (a) Register settings Operation stop mode settings are made via bits TxEn and RXEn of asynchronous serial interface mode register n (ASIMn). Figure 10-45. ASIMn Setting (Operation Stop Mode) After reset: 00H ASIMn R/W Address: FFFFF300H, FFFFF310H 7 6 5 4 3 2 1 0 TXEn RXEn PS1n PS0n CLn SLn ISRMn 0 TXEn RXEn 0 0 (n = 0, 1) Operation mode Operation stop RXDn/Pxx pin function TXDn/Pxx pin function Port function Port function Cautions 1. Do not switch the operation mode until after the current serial transmit/receive operation has stopped. 2. Be sure to set bit 0 to 0. 406 User's Manual U13850EJ6V0UD CHAPTER 10 SERIAL INTERFACE FUNCTION (2) Asynchronous serial interface mode This mode enables full-duplex operation, in which one byte of data is transmitted and received after the start bit. The on-chip dedicated UARTn baud rate generator enables communications using a wide range of selectable baud rates. The UARTn baud rate generator can also be used to generate a MIDI-standard baud rate (31.25 Kbps). (a) Register settings The asynchronous serial interface mode settings are made via ASIMn, BRGCn, BRGMCn0, and BRGMCn1 (n = 0, 1). Figure 10-46. ASIMn Setting (Asynchronous Serial Interface Mode) After reset: 00H ASIMn R/W Address: FFFFF300H, FFFFF310H 7 6 5 4 3 2 1 0 TXEn RXEn PS1n PS0n CLn SLn ISRMn 0 TXEn RXEn 0 1 1 (n = 0, 1) RXDn/Pxx pin function TXDn/Pxx pin function UARTn mode (receive only) Serial function Port function 0 UARTn mode (transmit only) Port function Serial function 1 1 UARTn mode (transmit and receive) Serial function Serial function PS1n PS0n 0 0 No parity 0 1 Zero parity always added during transmission No parity detection during reception (parity errors do not occur) 1 0 Odd parity 1 1 Even parity CLn Parity bit specification Character length specification 0 7 bits 1 8 bits SLn Stop bit length specification for transmit data 0 1 bit 1 2 bits ISRMn Operation mode Receive completion interrupt control when error occurs 0 Receive completion interrupt is issued when an error occurs 1 Receive completion interrupt is not issued when an error occurs Cautions 1. Do not switch the operation mode until after the current serial transmit/receive operation has stopped. 2. Be sure to set bit 0 to 0. 3. Set RXEn to 1 while a high level is being input to the RXDn pin. If RXEn is set to 1 while the RXDn pin is low level, reception is started unexpectedly. User's Manual U13850EJ6V0UD 407 CHAPTER 10 SERIAL INTERFACE FUNCTION Figure 10-47. ASISn Setting (Asynchronous Serial Interface Mode) After reset: 00H ASISn R Address: FFFFF302H, FFFFF312H 7 6 5 4 3 2 1 0 0 0 0 0 0 PEn FEn OVEn (n = 0, 1) PEn Parity error flag 0 No parity error 1 Parity error (Transmit data parity does not match) FEn Framing error flag 0 No framing error 1 Framing errorNote 1 (Stop bit not detected) OVEn Overrun error flag 0 No overrun error 1 Overrun errorNote 2 (Next receive operation was completed before data was read from receive buffer register) Notes 1. Even if the stop bit length has been set to two bits by setting bit 2 (SLn) of asynchronous serial interface mode register n (ASIMn), stop bit detection during a receive operation only applies to a stop bit length of 1 bit. 2. Be sure to read the contents of receive buffer register n (RXBn) when an overrun error has occurred. Until the contents of RXBn are read, further overrun errors will occur when receiving data. 408 User's Manual U13850EJ6V0UD CHAPTER 10 SERIAL INTERFACE FUNCTION Figure 10-48. BRGCn Setting (Asynchronous Serial Interface Mode) After reset: 00H BRGCn R/W Address: FFFFF304H, FFFFF314H 7 6 5 4 3 2 1 0 MDLn7 MDLn6 MDLn5 MDLn4 MDLn3 MDLn2 MDLn1 MDLn0 (n = 0, 1) MD Ln7 MD Ln6 MD Ln5 MD Ln4 MD Ln3 MD Ln2 MD Ln1 MD Ln0 Input clock selection 0 0 0 0 0 x x x Setting prohibited - 0 0 0 0 1 0 0 0 fSCK/8 8 0 0 0 0 1 0 0 1 fSCK/9 9 0 0 0 0 1 0 1 0 fSCK/10 10 0 0 0 0 1 0 1 1 fSCK/11 11 0 0 0 0 1 1 0 0 fSCK/12 12 0 0 0 0 1 1 0 1 fSCK/13 13 0 0 0 0 1 1 1 0 fSCK/14 14 0 0 0 0 1 1 1 1 fSCK/15 15 0 0 0 1 0 0 0 0 fSCK/16 16 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * 1 1 1 1 1 1 1 1 fSCK/255 k 255 Cautions 1. Reset input clears the BRGCn register to 00H. Before starting operation, select a setting other than "Setting prohibited". Selecting "Setting prohibited" setting in stop mode does not cause any problems. 2. If write is performed to BRGCn during communication processing, the output of the baud rate generator is disturbed and communication will not be performed normally. Therefore, do not write to BRGCn during communication processing. Remark fSCK: Source clock of 8-bit counter User's Manual U13850EJ6V0UD 409 CHAPTER 10 SERIAL INTERFACE FUNCTION Figure 10-49. BRGMCn0 and BRGMCn1 Settings (Asynchronous Serial Interface Mode) After reset: 00H R/W BRGMCn0 Address: FFFFF30EH, FFFFF31EH 7 6 5 4 3 2 1 0 0 0 0 0 0 TPSn2 TPSn1 TPSn0 (n = 0, 1) After reset: 00H R/W BRGMCn1 Address: FFFFF320H, FFFFF322H 7 6 5 4 3 2 1 0 0 0 0 0 0 0 0 TPSn3 (n = 0, 1) TPSn3 TPSn2 TPSn1 TPSn0 8-bit counter source clock selection m 0 0 0 0 External clock (ASCKn) - 0 0 0 1 fXX 0 0 0 1 0 fXX/2 1 0 0 1 1 fXX/4 2 0 1 0 0 fXX/8 3 0 1 0 1 fXX/16 4 0 1 1 0 fXX/32 5 0 1 1 1 at n = 0: TM3 output at n = 1: TM2 output - 1 0 0 0 fXX/64 6 1 0 0 1 fXX/128 7 1 0 1 0 fXX/256 8 1 0 1 1 fXX/512 9 1 1 0 0 Setting prohibited - 1 1 0 1 - 1 1 1 0 - 1 1 1 1 - Cautions 1. If write is performed to BRGMCn0, n1 during communication processing, the output of the baud rate generator is disturbed and communication will not be performed normally. Therefore, do not write to BRGMCn0 and BRGMCn1 during communication processing. 2. Be sure to set bits 7 to 3 of the BRGMCn0 register to 0. Remarks 1. fXX: Main clock oscillation frequency 2. When the output of the timer is selected as the clock, it is not necessary to set the P26/TO2/TI2 and P27/TO3/TI3 pins in the timer output mode. 410 User's Manual U13850EJ6V0UD CHAPTER 10 SERIAL INTERFACE FUNCTION (b) Baud rate The baud rate transmit/receive clock that is generated is obtained by dividing the main clock. * Generation of baud rate transmit/receive clock using main clock The transmit/receive clock is obtained by dividing the main clock. The following equation is used to obtain the baud rate from the main clock. <When 8 k 255> fXX [Baud rate] = 2 m+1 xk [Hz] fXX: Main clock oscillation frequency m: Value set by TPSn3 to TPSn0 (0 m 9) k: * Value set by MDLn7 to MDLn0 (8 k 255) Baud rate error tolerance The baud rate error tolerance depends on the number of bits in a frame and the counter division ratio [1/(16+k)]. Table 10-16 shows the relationship between the main clock and the baud rate, and Figure 10-50 shows an example of the baud rate error tolerance. Table 10-16. Relationship Between Main Clock and Baud Rate Baud Rate (bps) fXX = 8 MHz fXX = 16 MHz fXX = 12.58 MHz Note 1 fXX = 20 MHz Note 2 k m Error (%) k m Error (%) k m Error (%) k m Error (%) 32 244 9 0.06 - - - - - - - - - 64 244 8 0.06 192 9 -0.02 244 9 0.06 - - - 128 244 7 0.06 192 8 -0.02 244 8 0.06 152 9 0.39 300 208 6 0.16 164 7 -0.12 208 7 0.16 130 8 0.16 600 208 5 0.16 164 6 -0.12 208 6 0.16 130 7 0.16 1200 208 4 0.16 164 5 -0.12 208 5 0.16 130 6 0.16 2400 208 3 0.16 164 4 -0.12 208 4 0.16 130 5 0.16 4800 208 2 0.16 164 3 -0.12 208 3 0.16 130 4 0.16 9600 208 1 0.16 164 2 -0.12 208 2 0.16 130 3 0.16 19200 208 0 0.16 164 1 -0.12 208 1 0.16 130 2 0.16 38400 104 0 0.16 164 0 -0.12 208 0 0.16 130 1 0.16 76800 52 0 0.16 82 0 -0.12 104 0 0.16 130 0 0.16 150000 27 0 -1.24 42 0 -0.16 53 0 0.63 67 0 -0.50 300000 13 0 2.56 21 0 -0.16 27 0 -1.24 33 0 1.01 312500 13 0 -1.54 20 0 0.64 26 0 -1.54 8 2 0.00 Notes 1. Only in the V850/SB1 and the H versions of the V850/SB2 2. Only in the V850/SB1 Remark fXX: Main clock oscillation frequency User's Manual U13850EJ6V0UD 411 CHAPTER 10 SERIAL INTERFACE FUNCTION Figure 10-50. Error Tolerance (When k = 16), Including Sampling Errors Ideal sampling point 32T 64T 256T 288T 320T 304T Basic timing (clock cycle T) High-speed clock (clock cycle T') enabling normal reception Low-speed clock (clock cycle T") enabling normal reception Remark START D0 D7 336T P STOP 15.5T START D0 30.45T D7 P 60.9T STOP Sampling error 0.5T 304.5T 15.5T START D0 33.55T D7 67.1T P 301.95T T: 8-bit counter's source clock cycle Baud rate error tolerance (when k = 16) = 15.5 x 100 = 4.8438 (%) 320 412 352T User's Manual U13850EJ6V0UD STOP 335.5T CHAPTER 10 SERIAL INTERFACE FUNCTION (3) Communication operations (a) Data format As shown in Figure 10-43, the format of the transmit/receive data consists of a start bit, character bits, a parity bit, and one or more stop bits. Asynchronous serial interface mode register n (ASIMn) is used to set the character bit length, parity selection, and stop bit length within each data frame (n = 0, 1). Figure 10-51. Format of Transmit/Receive Data in Asynchronous Serial Interface 1 data frame Start bit D0 D1 D2 D3 D4 D5 D6 D7 Parity bit Stop bit * Start bit ............. 1 bit * Character bits ... 7 bits or 8 bits * Parity bit ........... Even parity, odd parity, zero parity, or no parity * Stop bit(s) ........ 1 bit or 2 bits When 7 bits is selected as the number of character bits, only the lower 7 bits (from bit 0 to bit 6) are valid, so that during a transmission the highest bit (bit 7) is ignored and during reception the highest bit (bit 7) must be set to 0. Asynchronous serial interface mode register n (ASIMn) and baud rate generator control register n (BRGCn) are used to set the serial transfer rate (n = 0, 1). If a receive error occurs, information about the receive error can be ascertained by reading asynchronous serial interface status register n (ASISn). User's Manual U13850EJ6V0UD 413 CHAPTER 10 SERIAL INTERFACE FUNCTION (b) Parity types and operations The parity bit is used to detect bit errors in transfer data. Usually, the same type of parity bit is used by the transmitting and receiving sides. When odd parity or even parity is set, errors in the parity bit (the oddnumber bit) can be detected. When zero parity or no parity is set, errors are not detected. (i) Even parity * During transmission The number of bits in transmit data including the parity bit is controlled so that an even number of "1" bits is set. The value of the parity bit is as follows. If the transmit data contains an odd number of "1" bits: The parity bit value is "1" If the transmit data contains an even number of "1" bits: The parity bit value is "0" * During reception The number of "1" bits is counted among the receive data including a parity bit, and a parity error occurs when the result is an odd number. (ii) Odd parity * During transmission The number of bits in transmit data including a parity bit is controlled so that an odd number of "1" bits is set. The value of the parity bit is as follows. If the transmit data contains an odd number of "1" bits: The parity bit value is "0" If the transmit data contains an even number of "1" bits: The parity bit value is "1" * During reception The number of "1" bits is counted among the receive data including a parity bit, and a parity error occurs when the result is an even number. (iii) Zero parity During transmission, the parity bit is set to "0" regardless of the transmit data. During reception, the parity bit is not checked. Therefore, no parity errors will occur regardless of whether the parity bit is a "0" or a "1". (iv) No parity No parity bit is added to the transmit data. During reception, receive data is regarded as having no parity bit. Since there is no parity bit, no parity errors will occur. 414 User's Manual U13850EJ6V0UD CHAPTER 10 SERIAL INTERFACE FUNCTION (c) Transmission The transmit operation is started when transmit data is written to transmit shift register n (TXSn). A start bit, parity bit, and stop bit(s) are automatically added to the data. Starting the transmit operation shifts out the data in TXSn, thereby emptying TXSn, after which a transmit completion interrupt (INTSTn) is issued. The timing of the transmit completion interrupt is shown below. Figure 10-52. Timing of Asynchronous Serial Interface Transmit Completion Interrupt (a) Stop bit length: 1 TxDn (output) START D0 D1 D2 D6 D7 Parity D6 D7 Parity STOP INTSTn (b) Stop bit length: 2 TxDn (output) START D0 D1 D2 STOP INTSTn Caution Do not write to asynchronous serial interface mode register n (ASIMn) during a transmit operation. Writing to ASIMn during a transmit operation may disable further transmit operations (in such cases, input RESET to restore normal operation). Whether or not a transmit operation is in progress can be determined via software using the transmit completion interrupt (INTSTn) or the interrupt request flag (STIFn) that is set by INTSTn. Remark n = 0, 1 User's Manual U13850EJ6V0UD 415 CHAPTER 10 SERIAL INTERFACE FUNCTION (d) Reception The receive operation is enabled when "1" is set to bit 6 (RXEn) of asynchronous serial interface mode register n (ASIMn), and the input via the RXDn pin is sampled. The serial clock specified by BRGCn is used when sampling the RXDn pin. When the RXDn pin goes low, the 8-bit counter begins counting and the start timing signal for data sampling is output when half of the specified baud rate time has elapsed. If sampling the RXDn pin input with this start timing signal yields a low-level result, a start bit is recognized, after which the 8-bit counter is initialized and starts counting and data sampling begins. After the start bit is recognized, the character data, parity bit, and one-bit stop bit are detected, at which point reception of one data frame is completed. Once reception of one data frame is completed, the receive data in the shift register is transferred to receive buffer register n (RXBn) and a receive completion interrupt (INTSRn) occurs. Even if an error has occurred, the receive data in which the error occurred is still transferred to RXBn. When an error occurs, INSTRn is generated if bit 1 (ISRMn) of ASIMn is cleared (0). On the other hand, INTSRn is not generated if the ISRMn bit is set (1). If the RXEn bit is reset to 0 during a receive operation, the receive operation is stopped immediately. At this time, the contents of RXBn and ASISn do not change, nor does INTSRn or INTSERn occur. The timing of the asynchronous serial interface receive completion interrupt is shown below. Figure 10-53. Timing of Asynchronous Serial Interface Receive Completion Interrupt RXDn (input) START D0 D1 D2 D6 D7 Parity STOP INTSRn Caution Be sure to read the contents of receive buffer register n (RXBn) even when a receive error has occurred. If the contents of RXBn are not read, an overrun error will occur during the next data receive operation and the receive error status will remain. Remark 416 n = 0, 1 User's Manual U13850EJ6V0UD CHAPTER 10 SERIAL INTERFACE FUNCTION (e) Receive error Three types of errors can occur during a receive operation: a parity error, framing error, and overrun error. When, as the result of data reception, an error flag is set in asynchronous serial interface status register n (ASISn), the receive error interrupt request (INTSERn) is generated. The receive error interrupt request is generated prior to the receive completion interrupt request (INTSRn). By reading the contents of ASISn during receive error interrupt servicing (INTSERn), it is possible to ascertain which error has occurred during reception. The contents of ASISn are reset (0) by reading receive buffer register n (RXBn) or receiving subsequent data (if there is an error in the subsequent data, the error flag is set). Table 10-17. Receive Error Causes Receive Error Cause ASISn Value Parity error Parity specification at transmission and receive data parity do not match. 04H Framing error Stop bit is not detected. 02H Overrun error Reception of subsequent data was completed before data was read from the receive buffer register. 01H Figure 10-54. Receive Error Timing RxDn (Input) START D0 D1 D2 D6 D7 Parity STOP Note INTSRn INTSERn INTSERn (When parity error occurs) Note Even if a receive error occurs when the ISRMn bit of ASIMn is set (1), INTSRn is not generated. Cautions 1. The contents of asynchronous serial interface status register n (ASISn) are reset (0) by reading receive buffer register n (RXBn) or receiving subsequent data. To check the contents of error, always read ASISn before reading RXBn. 2. Be sure to read receive buffer register n (RXBn) even when a receive error occurs. If RXBn is not read out, an overrun error will occur during subsequent data reception and as a result receive errors will continue to occur. Remark n = 0, 1 User's Manual U13850EJ6V0UD 417 CHAPTER 10 SERIAL INTERFACE FUNCTION 10.5.4 Standby function (1) Operation in HALT mode Serial transfer operations are performed normally. (2) Operation in STOP and IDLE modes (a) When internal clock is selected as serial clock The operations of asynchronous serial interface mode register n (ASIMn), transmit shift register n (TXSn), and receive buffer register n (RXBn) are stopped and their values immediately before the clock stopped are held. The TXDn pin output holds the data immediately before the clock was stopped (in STOP mode) during transmission. When the clock is stopped during reception, the receive data until the clock stopped is stored and subsequent receive operations are stopped. Reception resumes upon clock restart. (b) When external clock is selected as serial clock Serial transfer operations are performed normally. 418 User's Manual U13850EJ6V0UD CHAPTER 10 SERIAL INTERFACE FUNCTION 10.6 3-Wire Variable-Length Serial I/O (CSI4) CSI4 has the following two operation modes. (1) Operation stop mode This mode is used when serial transfers are not performed. (2) 3-wire variable-length serial I/O mode (MSB/LSB first switchable) This mode transfers variable data of 8 to 16 bits via three lines: serial clock (SCK4), serial output (SO4), and serial input (SI4). Since the data can be transmitted and received simultaneously in the 3-wire variable-length serial I/O mode, the processing time of data transfer is shortened. MSB and LSB can be switched for the first bit of data to be transferred in serial. The 3-wire variable-length serial I/O mode is useful when connecting to a peripheral I/O device that includes a clocked serial interface, a display controller, etc. 10.6.1 Configuration CSI4 includes the following hardware. Table 10-18. Configuration of CSI4 Item Configuration Register Variable-length serial I/O shift register 4 (SIO4) Control registers Variable-length serial control register 4 (CSIM4) Variable-length serial setting register 4 (CSIB4) Baud rate generator source clock selection register 4 (BRGCN4) Baud rate generator output clock selection register 4 (BRGCK4) User's Manual U13850EJ6V0UD 419 CHAPTER 10 SERIAL INTERFACE FUNCTION Figure 10-55. Block Diagram of CSI4 Internal bus Direction controller Variable-length I/O shift register 4 (8-/16-bit) SI4 SO4 SCK4 Serial clock counter (8-/16-bit switchable) Interrupt generator INTCSI4 Serial clock controller Selector Baud rate generator (1) Variable-length serial I/O shift register 4 (SIO4) SIO4 is a 16-bit variable register that performs parallel-serial conversion and transmit/receive (shift operations) synchronized with the serial clock. SIO4 is set by a 16-bit memory manipulation instruction. The serial operation starts when data is written to or read from SIO4, while the bit 7 (CSIE4) of variable-length serial control register 4 (CSIM4) is 1. When transmitting, data written to SIO4 is output via the serial output (SO4). When receiving, data is read from the serial input (SI4) and written to SIO4. RESET input clears SIO4 to 0000H. Caution Do not execute SIO4 access except for the access that becomes the transfer start trigger during transfer operations (read is disabled when MODE4 = 0 and write is disabled when MODE4 = 1). After reset: 0000H R/W Address: FFFFF2E0H 15 14 13 12 11 10 9 8 7 SIO4 420 User's Manual U13850EJ6V0UD 6 5 4 3 2 1 0 CHAPTER 10 SERIAL INTERFACE FUNCTION When the transfer bit length is set to other than 16 bits and data is set to the shift register, data should be aligned from the lowest bit of the shift register, regardless of whether MSB or LSB is set for the first transfer bit. Any data can be set to the unused higher bits; however, in this case the received data after a serial transfer operation becomes 0. Figure 10-56. When Transfer Bit Length Other Than 16 Bits Is Set (a) When transfer bit length is 10 bits and MSB first SO4 15 10 SI4 9 0 Fixed to 0 (b) When transfer bit length is 12 bits and LSB first SI4 15 12 SO4 11 0 Fixed to 0 User's Manual U13850EJ6V0UD 421 CHAPTER 10 SERIAL INTERFACE FUNCTION 10.6.2 CSI4 control registers CSI4 uses the following registers for control functions. * Variable-length serial control register 4 (CSIM4) * Variable-length serial setting register 4 (CSIB4) * Baud rate generator source clock selection register 4 (BRGCN4) * Baud rate generator output clock selection register 4 (BRGCK4) (1) Variable-length serial control register 4 (CSIM4) This register is used to enable or disable serial interface channel 4's serial clock, operation modes, and specific operations. CSIM4 can be set by an 8-bit or 1-bit memory manipulation instruction. RESET input clears CSIM4 to 00H. After reset: CSIM4 00H R/W Address: FFFFF2E2H <7> 6 5 4 3 2 1 0 CSIE4 0 0 0 0 MODE4 0 SCL4 CSIE4 SIO4 operation enable/disable specification Shift register operation Port 0 Operation disabled Clear Port functionNote 1 1 Operation enabled Count operation enabled Serial function + port functionNote 2 MODE4 Transfer operation mode flag Operation mode Transfer start trigger SO4 output 0 Transmit/receive mode SIO4 write Normal output 1 Receive-only mode SIO4 read Port function SCL4 Notes 1. Serial counter Clock selection 0 External clock input (SCK4) 1 BRG (Baud rate generator) When CSIE4 = 0 (SIO4 operation disabled status), the port function is available for the SI4, SO4, and SCK4 pins. 2. When CSIE4 = 1 (SIO4 operation enable status), the port function is available only for the SI4 pin when using the transmit function only and to SO4 pin when using the receive function. 422 User's Manual U13850EJ6V0UD CHAPTER 10 SERIAL INTERFACE FUNCTION (2) Variable-length serial setting register 4 (CSIB4) CSIB4 is used to set the operation format of serial interface channel 4. The bit length of a variable register is set by setting bits 3 to 0 (BSEL3 to BSEL0) of variable-length serial setting register 4. Data is transferred MSB first while bit 4 (DIR) is 1, and is transferred LSB first while DIR is 0. CSIB4 can be set by an 8-bit or 1-bit memory manipulation instruction. RESET input clears CSIB4 to 00H. After reset: 00H CSIB4 R/W Address: FFFFF2E4H 7 <6> <5> <4> 3 2 1 0 0 CMODE DMODE DIR BSEL3 BSEL2 BSEL1 BSEL0 CMODE DMODE 0 0 Low level Rising edge of SCK4 Falling edge of SCK4 0 1 Low level Falling edge of SCK4 Rising edge of SCK4 1 0 High level Falling edge of SCK4 Rising edge of SCK4 1 1 High level Rising edge of SCK4 Falling edge of SCK4 SCK4 active level DIR SI4 interrupt timing SO4 output timing Serial transfer direction 0 LSB first 1 MSB first BSEL3 BSEL2 BSEL1 BSEL0 0 0 0 0 16 bits 1 0 0 0 8 bits 1 0 0 1 9 bits 1 0 1 0 10 bits 1 0 1 1 11 bits 1 1 0 0 12 bits 1 1 0 1 13 bits 1 1 1 0 14 bits 1 1 1 1 15 bits Other than above Bit length of serial register Setting prohibited User's Manual U13850EJ6V0UD 423 CHAPTER 10 SERIAL INTERFACE FUNCTION (3) Baud rate generator source clock selection register 4 (BRGCN4) BRGCN4 can be set by an 8-bit memory manipulation instruction. RESET input clears BRGCN4 to 00H. After reset: 00H BRGCN4 424 R/W Address: FFFFF2E6H 7 6 5 4 3 2 1 0 0 0 0 0 0 BRGN2 BRGN1 BRGN0 BRGN2 BRGN1 BRGN0 0 0 0 fXX 0 0 0 1 fXX/2 1 0 1 0 fXX/4 2 0 1 1 fXX/8 3 1 0 0 fXX/16 4 1 0 1 fXX/32 5 1 1 0 fXX/64 6 1 1 1 fXX/128 7 Source clock (fSCK) User's Manual U13850EJ6V0UD n CHAPTER 10 SERIAL INTERFACE FUNCTION (4) Baud rate generator output clock selection register 4 (BRGCK4) BRGCK4 is set by an 8-bit memory manipulation instruction. RESET input sets BRGCK4 to 7FH. After reset: 7FH R/W BRGCK4 Address: FFFFF2E8H 7 6 5 4 3 2 1 0 0 BRGK6 BRGK5 BRGK4 BRGK3 BRGK2 BRGK1 BRGK0 BRGK6 BRGK5 BRGK4 BRGK3 BRGK2 BRGK1 BRGK0 Baud rate output clock k 0 0 0 0 0 0 0 Setting prohibited 0 0 0 0 0 0 0 1 fSCK/2 1 0 0 0 0 0 1 0 fSCK/4 2 0 1 0 3 0 1 1 fSCK/6 3 * * * * * * * * * * * * * * * * * * * * * * * * * * * 1 1 1 1 1 1 0 fSCK/252 126 1 1 1 1 1 1 1 fSCK/254 127 The baud rate transmit/receive clock that is generated is obtained by dividing the main clock. * Generation of baud rate transmit/receive clock using main clock The transmit/receive clock is obtained by dividing the main clock. The following equation is used to obtain the baud rate from the main clock. <When 1 k 127> [Baud rate] = fxx 2 xkx2 n [Hz] fXX: Main clock oscillation frequency Caution n: Value set by BRGN2 to BRGN0 (0 n 7) k: Value set by BRGK7 to BRGK0 (1 k 127) Do not use the baud rate transmit/receive clock of CSI4 with the transfer rate higher than the CPU operation clock. If used with the transfer rate higher than the CPU operation clock, transfer cannot be performed correctly. User's Manual U13850EJ6V0UD 425 CHAPTER 10 SERIAL INTERFACE FUNCTION 10.6.3 Operations CSI4 has the following two operation modes. * Operation stop mode * 3-wire variable-length serial I/O mode (1) Operation stop mode In this mode serial transfers are not performed and therefore power consumption can be reduced. When in operation stop mode, SI4, SO4, and SCK4 can be used as normal I/O ports. (a) Register settings Operation stop mode is set via CSIE4 bit of variable-length serial control register 4 (CSIM4). While CSIE4 = 0 (SIO4 operation stop state), the pins connected to SI4, SO4, or SCK4 function as port pins. Figure 10-57. CSIM4 Setting (Operation Stop Mode) After reset: 00H CSIM4 R/W Address: FFFFF2E2H 7 6 5 4 3 2 1 0 CSIE4 0 0 0 0 MODE4 0 SCL4 CSIE4 SIO4 operation enable/disable specification Shift register operation 0 426 Operation disabled Serial counter Clear User's Manual U13850EJ6V0UD Port Port function CHAPTER 10 SERIAL INTERFACE FUNCTION (2) 3-wire variable-length serial I/O mode The 3-wire variable-length serial I/O mode is useful when connecting to a peripheral I/O device that includes a clocked serial interface, a display controller, etc. This mode executes data transfers via three lines: a serial clock line (SCK4), serial output line (SO4), and serial input line (SI4). (a) Register settings The 3-wire variable-length serial I/O mode is set via variable-length serial control register 4 (CSIM4). Figure 10-58. CSIM4 Setting (3-Wire Variable-Length Serial I/O Mode) After reset: 00H CSIM4 R/W Address: FFFFF2E2H 7 6 5 4 3 2 1 0 CSIE4 0 0 0 0 MODE4 0 SCL4 CSIE4 SIO4 operation enable/disable specification Shift register operation 1 Operation enabled MODE4 Serial counter Count operation enabled Port Serial function + port function Transfer operation mode flag Operation mode Transfer start trigger SO4 output 0 Transmit/receive mode Write to SIO4 Normal output 1 Receive-only mode Read from SIO4 Port function SCL4 Clock selection 0 External clock input (SCK4) 1 BRG (Baud rate generator) User's Manual U13850EJ6V0UD 427 CHAPTER 10 SERIAL INTERFACE FUNCTION The bit length of a variable-length register is set by setting bits 3 to 0 (BSEL3 to BSEL0) of CSIB4. Data is transferred MSB first while bit 4 (DIR) is 1, and is transferred LSB first while DIR is 0. Figure 10-59. CSIB4 Setting (3-Wire Variable-Length Serial I/O Mode) After reset: 00H CSIB4 R/W Address: FFFFF2E4H 7 <6> <5> <4> 3 2 1 0 0 CMODE DMODE DIR BSEL3 BSEL2 BSEL1 BSEL0 CMODE DMODE 0 0 Low level Rising edge of SCK4 Falling edge of SCK4 0 1 Low level Falling edge of SCK4 Rising edge of SCK4 1 0 High level Falling edge of SCK4 Rising edge of SCK4 1 1 High level Rising edge of SCK4 Falling edge of SCK4 SCK4 active level DIR SO4 output timing Serial transfer direction 0 LSB first 1 MSB first BSEL3 BSEL2 BSEL1 BSEL0 0 0 0 0 16 bits 1 0 0 0 8 bits 1 0 0 1 9 bits 1 0 1 0 10 bits 1 0 1 1 11 bits 1 1 0 0 12 bits 1 1 0 1 13 bits 1 1 1 0 14 bits 1 1 1 1 15 bits Other than above 428 SI4 interrupt timing Bit length of serial register Setting prohibited User's Manual U13850EJ6V0UD CHAPTER 10 SERIAL INTERFACE FUNCTION (b) Communication Operations In the 3-wire variable-length serial I/O mode, data is transmitted and received in 8 to 16-bit units, and is specified by setting bits 3 to 0 (BSEL3 to BSEL0) of variable-length serial setting register 4 (CSIB4). Each bit of data is transmitted or received in synchronization with the serial clock. After transfer of all bits is completed, SIC4 stops operation automatically and the interrupt request flag (INTCSI4) is set. Bits 6 and 5 (CMODE and DMODE) of variable-length serial setting register 4 (CSIB4) can change the attribute of the serial clock (SCK4) and the phases of serial data (SI4 and SO4). Figure 10-60. Timing of 3-Wire Variable-Length Serial I/O Mode SCK4 (CMODE = 0) SCK4 (CMODE = 1) SIO4 (write) SO4 (DMODE = 0) SO4 (DMODE = 1) INTCSI4 Remark An arrow shows the SI4 data fetch timing. When CMODE = 0, the serial clock (SCK4) stops at the high level during the operation stop, and outputs the low level during a data transfer operation. When CMODE = 1, on the other hand, SCK4 stops at the low level during the operation stop and outputs the high level during a data transfer operation. The phases of the SO4 output timing and the S14 fetch timing can be shifted half a clock by setting DMODE. However, the interrupt signal (INTCSI4) is generated at the final edge of the serial clock (SCK4), regardless the setting of CSIB4. User's Manual U13850EJ6V0UD 429 CHAPTER 10 SERIAL INTERFACE FUNCTION (c) Transfer start A serial transfer becomes possible when the following two conditions have been satisfied. * The SIO4 operation control bit (CSIE4) = 1 * After a serial transfer, the internal serial clock is stopped. Serial transfer starts when the following operation is performed after the above two conditions have been satisfied. * Transmit/transmit and receive mode (MODE4 = 0) Transfer starts when writing to SIO4. * Receive-only mode Transfer starts when reading from SIO4. Caution After data has been written to SIO4, transfer will not start even if the CSIE4 bit value is set to 1. Completion of the final-bit transfer automatically stops the serial transfer operation and sets the interrupt request flag (INTCSI4). Figure 10-61. Timing of 3-Wire Variable-Length Serial I/O Mode (When CSIB4 = 08H) SCK4 (CMODE = 0) SO4 (DMODE = 0) SI4 1 2 3 4 5 6 7 8 LSB MSB LSB MSB INTCSI4 Transfer end Remark 430 CSIB4 = 08H (CMODE = 0, DMODE = 0, DIR = 0, BSEL3 to BSEL0 = 1000) User's Manual U13850EJ6V0UD CHAPTER 11 A/D CONVERTER 11.1 Function The A/D converter converts analog input signals into digital values with a resolution of 10 bits, and can handle 12 channels of analog input signals (ANI0 to ANI11). The V850/SB1 and V850/SB2 support the low power consumption mode by low-speed conversion. (1) Hardware start Conversion is started by trigger input (ADTRG) (rising edge, falling edge, or both rising and falling edges can be specified). (2) Software start Conversion is started by setting A/D converter mode register 1 (ADM1). One analog input channel is selected from ANI0 to ANI11, and A/D conversion is performed. If A/D conversion has been started by means of a hardware start, conversion stops once it has been completed, and an interrupt request (INTAD) is generated. If conversion has been started by means of a software start, conversion is performed repeatedly. Each time conversion is completed, INTAD is generated. User's Manual U13850EJ6V0UD 431 CHAPTER 11 A/D CONVERTER The block diagram is shown below. Figure 11-1. Block Diagram of A/D Converter AVDD ANI0 ANI1 ANI2 ANI3 ANI4 ANI5 ANI6 ANI7 ANI8 ANI9 ANI10 ANI11 Tap selector Selector Sample & hold circuit Voltage comparator AVSS Successive approximation register (SAR) Edge detector ADTRG AVREF AVSS Controller INTAD A/D conversion result register (ADCR) 4 Trigger enable ADS3 ADS2 ADS1 ADS0 ADCS TRG Analog input channel specification register (ADS) FR2 FR1 FR0 EGA1 EGA0 ADPS A/D converter mode register 1 (ADM1) Internal bus 432 User's Manual U13850EJ6V0UD IEAD A/D converter mode register 2 (ADM2) CHAPTER 11 A/D CONVERTER 11.2 Configuration The A/D converter includes the following hardware. Table 11-1. Configuration of A/D Converter Item Configuration Analog input 12 channels (ANI0 to ANI11) Registers Successive approximation register (SAR) A/D conversion result register (ADCR) A/D conversion result register H (ADCRH): Only higher 8 bits can be read Control registers A/D converter mode register 1 (ADM1) A/D converter mode register 2 (ADM2) Analog input channel specification register (ADS) (1) Successive approximation register (SAR) This register compares the voltage value of the analog input signal with the voltage tap (compare voltage) value from the series resistor string, and holds the result of the comparison starting from the most significant bit (MSB). When the comparison result has been stored down to the least significant bit (LSB) (i.e., when the A/D conversion has been completed), the contents of the SAR are transferred to the A/D conversion result register. (2) A/D conversion result register (ADCR), A/D conversion result register H (ADCRH) Each time A/D conversion is completed, the result of the conversion is loaded to this register from the successive approximation register. The higher 10 bits of this register hold the result of the A/D conversion (the lower 6 bits are fixed to 0). This register is read using a 16-bit memory manipulation instruction. RESET input sets ADCR to 0000H. When using only the higher 8 bits of the result of the A/D conversion, ADCRH is read using an 8-bit memory manipulation instruction. RESET input sets ADCRH to 00H. Caution A write operation to A/D converter mode register 1 (ADM1) and the analog input channel specification register (ADS) may cause the ADCR contents to be undefined. Therefore, read the A/D conversion result during A/D conversion (ADCS = 1). Correct conversion results may not be read if the timing is other than the above. (3) Sample & hold circuit The sample & hold circuit samples each of the analog input signals sequentially sent from the input circuit, and sends the sampled data to the voltage comparator. This circuit also holds the sampled analog input signal voltage during A/D conversion. (4) Voltage comparator The voltage comparator compares the analog input signal with the output voltage of the series resistor string. (5) Series resistor string The series resistor string is connected between AVREF and AVSS and generates a voltage for comparison with the analog input signal. User's Manual U13850EJ6V0UD 433 CHAPTER 11 A/D CONVERTER (6) ANI0 to ANI11 pins These are analog input pins for the 12 channels of the A/D converter, and are used to input the analog signals to be converted into digital signals. Pins other than ones selected as the analog input by the analog input channel specification register (ADS) can be used as input ports. Caution Make sure that the voltages input to ANI0 to ANI11 do not exceed the rated values. If a voltage higher than or equal to AVREF or lower than or equal to AVSS (even within the range of the absolute maximum ratings) is input to a channel, the conversion value of the channel is undefined, and the conversion values of the other channels may also be affected. (7) AVREF pin This pin inputs a reference voltage to the A/D converter. The signals input to the ANI0 to ANI11 pins are converted into digital signals based on the voltage applied across AVREF and AVSS. (8) AVSS pin This is the ground pin of the A/D converter. Always keep the potential at this pin the same as that at the VSS pin even when the A/D converter is not in use. (9) AVDD pin This is the analog power supply pin of the A/D converter. Always keep the potential at this pin the same as that at the VDD pin even when the A/D converter is not in use. 434 User's Manual U13850EJ6V0UD CHAPTER 11 A/D CONVERTER 11.3 Control Registers The A/D converter is controlled by the following registers. * A/D converter mode register 1 (ADM1) * Analog input channel specification register (ADS) * A/D converter mode register 2 (ADM2) (1) A/D converter mode register 1 (ADM1) This register specifies the conversion time of the input analog signal to be converted into a digital signal, starting or stopping the conversion, and an external trigger. ADM is set by a 1-bit or 8-bit memory manipulation instruction. RESET input clears ADM1 to 00H. (1/2) After reset: ADM1 00H R/W Address: FFFFF3C0H <7> <6> 5 4 3 2 1 <0> ADCS TRG FR2 FR1 FR0 EGA1 EGA0 ADPS ADCS A/D conversion control 0 Conversion stopped 1 Conversion enabled TRG Software start or hardware start selection 0 Software start 1 Hardware start User's Manual U13850EJ6V0UD 435 CHAPTER 11 A/D CONVERTER (2/2) ADPS FR2 FR1 FR0 Selection of conversion time Note 1 Conversion time + stabilization timeNote 2 fXX 20 MHzNote 3 12.58 MHz 0 0 0 0 168/fXX 8.4 s Setting prohibited 0 0 0 1 120/fXX 6.0 s 9.5 s 0 0 1 0 84/fXX Setting prohibited 6.7 s 0 0 1 1 60/fXX Setting prohibited Setting prohibited 0 1 0 0 48/fXX Setting prohibited Setting prohibited 0 1 0 1 36/fXX Setting prohibited Setting prohibited 0 1 1 0 Setting prohibited Setting prohibited 0 1 1 1 12/fXX Setting prohibited Setting prohibited 1 0 0 0 168/fXX + 64/fXX 8.4 + 4.2 s Setting prohibited 1 0 0 1 120/fXX + 60/fXX 6.0 + 3.0 s 9.5 + 4.8 s 1 0 1 0 84/fXX + 42/fXX Setting prohibited 6.7 + 3.3 s 1 0 1 1 60/fXX + 30/fXX Setting prohibited Setting prohibited 1 1 0 0 48/fXX + 24/fXX Setting prohibited Setting prohibited 1 1 0 1 36/fXX + 18/fXX Setting prohibited Setting prohibited 1 1 1 0 Setting prohibited Setting prohibited 1 1 1 1 Setting prohibited Setting prohibited Setting prohibited Setting prohibited 12/fXX + 6/fXX EGA1 EGA0 Valid edge specification for external trigger signal 0 0 No edge detection 0 1 Detection at falling edge 1 0 Detection at rising edge 1 1 Detection at both rising and falling edges ADPS Comparator control when A/D conversion is stopped (ADCS = 0) 0 Comparator on 1 Comparator off Notes 1. Conversion time (actual A/D conversion time). Always set the time to 5 s Conversion time 10 s. 2. Stabilization time (setup time of A/D converter) Each A/D conversion requires "conversion time + stabilization time". There is no stabilization time when ADPS = 0. 3. Only in the V850/SB1. Cautions 1. The A/D converter cannot be used when the operation frequency is 2.4 to 3.6 MHz. 2. Cut the current consumption by setting ADPS to 1 when ADCS = 0. 436 User's Manual U13850EJ6V0UD CHAPTER 11 A/D CONVERTER (2) Analog input channel specification register (ADS) ADS specifies the port for inputting the analog voltage to be converted into a digital signal. ADS is set by a 1-bit or 8-bit memory manipulation instruction. RESET input clears ADS to 00H. After reset: 00H ADS R/W Address: FFFFF3C2H 7 6 5 4 3 2 1 0 0 0 0 0 ADS3 ADS2 ADS1 ADS0 ADS3 ADS2 ADS1 ADS0 0 0 0 0 ANI0 0 0 0 1 ANI1 0 0 1 0 ANI2 0 0 1 1 ANI3 0 1 0 0 ANI4 0 1 0 1 ANI5 0 1 1 0 ANI6 0 1 1 1 ANI7 1 0 0 0 ANI8 1 0 0 1 ANI9 1 0 1 0 ANI10 1 0 1 1 ANI11 Analog Input Channel Specification Other than above Setting prohibited Caution Be sure to set bits 7 to 4 to 0. (3) A/D converter mode register 2 (ADM2) ADM2 specifies connection/disconnection of AVDD and AVREF. ADM2 is set by a 1-bit or 8-bit memory manipulation instruction. RESET input clears ADM2 to 00H. After reset: ADM2 00H R/W Address: FFFFF3C8H 7 6 5 4 3 2 1 <0> 0 0 0 0 0 0 0 IEAD IEAD A/D current cut control 0 Cut between AVDD and AVREF 1 Connect between AVDD and AVREF User's Manual U13850EJ6V0UD 437 CHAPTER 11 A/D CONVERTER 11.4 Operation 11.4.1 Basic operation <1> Select one channel whose analog signal is to be converted into a digital signal by using the analog input channel specification register (ADS). <2> The sample & hold circuit samples the voltage input to the selected analog input channel. <3> After sampling for a specific time, the sample & hold circuit enters the hold status, and holds the input analog voltage until it has been converted into a digital signal. <4> Set bit 9 of the successive approximation register (SAR). The tap selector sets the voltage tap of the series resistor string to (1/2) AVREF. <5> The voltage difference between the voltage tap of the series resistor string and the analog input voltage is compared by the voltage comparator. If the analog input voltage is greater than (1/2) AVREF, the MSB of the SAR remains set. If the analog input voltage is less than (1/2) AVREF, the MSB is reset. <6> Next, bit 8 of the SAR is automatically set, and the analog input voltage is compared again. Depending on the value of bit 9 to which the result of the preceding comparison has been set, the voltage tap of the series resistor string is selected as follows: * Bit 9 = 1: (3/4) AVREF * Bit 9 = 0: (1/4) AVREF The analog input voltage is compared with one of these voltage taps, and bit 8 of the SAR is manipulated as follows depending on the result of the comparison. * Analog input voltage voltage tap: Bit 8 = 1 * Analog input voltage voltage tap: Bit 8 = 0 <7> The above steps are repeated until the bit 0 of the SAR has been manipulated. <8> When comparison of all 10 bits of the SAR has been completed, the valid digital value remains in the SAR, and the value of the SAR is transferred and latched to the A/D conversion result register (ADCR). At the same time, an A/D conversion end interrupt request (INTAD) can be generated. Caution The first conversion value immediately after setting ADCS = 0 1 may not satisfy the ratings. 438 User's Manual U13850EJ6V0UD CHAPTER 11 A/D CONVERTER Figure 11-2. Basic Operation of A/D Converter Conversion time Sampling time Operation of A/D converter SAR Sampling A/D conversion Conversion result Undefined Conversion result ADCR INTAD A/D conversion is successively executed until bit 7 (ADCS) of A/D converter mode register 1 (ADM1) is reset to 0 by software. If ADM1 and the analog input channel specification register (ADS) are written during A/D conversion, the conversion is initialized. If ADCS is set to 1 at this time, conversion is started from the beginning. RESET input sets the A/D conversion result register (ADCR) to 0000H. User's Manual U13850EJ6V0UD 439 CHAPTER 11 A/D CONVERTER 11.4.2 Input voltage and conversion result The analog voltages input to the analog input pins (ANI0 to ANI11) and the result of the A/D conversion (contents of the A/D conversion result register (ADCR)) are related as follows. ADCR = INT( VIN AVREF x 1024 + 0.5) Or, (ADCR - 0.5) x AVREF 1024 VIN < (ADCR + 0.5) x AVREF 1024 INT ( ): Function that returns integer of value in ( ) VIN: Analog input voltage AVREF: AVREF pin voltage ADCR: Value of the A/D conversion result register (ADCR) The relationship between the analog input voltage and A/D conversion result is shown below. Figure 11-3. Relationship Between Analog Input Voltage and A/D Conversion Result 1023 1022 A/D conversion result (ADCR) 1021 3 2 1 0 1 1 3 2 5 3 2048 1024 20481024 2048 1024 2043 1022 20451023 2047 1 2048 1024 20481024 2048 Input voltage/AVREF 440 User's Manual U13850EJ6V0UD CHAPTER 11 A/D CONVERTER 11.4.3 A/D converter operation mode In this mode one of the analog input channels ANI0 to ANI11 is selected by the analog input channel specification register (ADS) and A/D conversion is executed. The A/D conversion can be started in the following two ways. * Hardware start: * Software start: Started by trigger input (ADTRG) (rising edge, falling edge, or both rising and falling edges can be specified) Started by setting A/D converter mode register 1 (ADM1) The result of the A/D conversion is stored in the A/D conversion result register (ADCR) and an interrupt request signal (INTAD) is generated at the same time. (1) A/D conversion by hardware start A/D conversion is on standby if bit 6 (TRG) and bit 7 (ADCS) of A/D converter mode register 1 (ADM1) are set to 1. When an external trigger signal is input, the A/D converter starts converting the voltage applied to the analog input pin specified by the analog input channel specification register (ADS) into a digital signal. When the A/D conversion has been completed, the result of the conversion is stored in the A/D conversion result register (ADCR), and an interrupt request signal (INTAD) is generated. Once A/D conversion has been started and completed, conversion is not started again unless a new external trigger signal is input. If data with ADCS set to 1 is written to ADM during A/D conversion, the conversion under execution is stopped, and the A/D converter stands by until a new external trigger signal is input. If the external trigger signal is input, A/D conversion is executed again from the beginning. If data with ADCS set to 0 is written to ADM1 during A/D conversion, the conversion is immediately stopped. Figure 11-4. A/D Conversion by Hardware Start (with Falling Edge Specified) External trigger input signal Rewriting ADS ADCS = 1, TRG = 1 Standby status A/D conversion ADCR Rewriting ADS ADCS = 1, TRG = 1 ANIn ANIn ANIn Standby status ANIn ANIn Standby status ANIn ANIm ANIm ANIm ANIm ANIm INTAD Remarks 1. n = 0, 1, ..., 11 2. m = 0, 1, ..., 11 User's Manual U13850EJ6V0UD 441 CHAPTER 11 A/D CONVERTER (2) A/D conversion by software start If bit 6 (TRG) of A/D converter mode register 1 (ADM1) is set to 0 and bit 7 (ADCS) is set to 1, the A/D converter starts converting the voltage applied to the analog input pin specified by the analog input channel specification register (ADS) into a digital signal. When A/D conversion has been completed, the result of the conversion is stored in the A/D conversion result register (ADCR), and an interrupt request signal (INTAD) is generated. Once A/D conversion has been started and completed, the next conversion is started immediately. A/D conversion is repeated until new data is written to ADS. If ADS is rewritten during A/D conversion, the conversion under execution is stopped, and conversion of the newly selected analog input channel is started. If data with ADCS set to 0 is written to ADM1 during A/D conversion, the conversion is immediately stopped. Figure 11-5. A/D Conversion by Software Start Rewriting ADS ADCS = 1, TRG = 0 ANIn A/D conversion Rewriting ADS ADCS = 1, TRG = 0 ANIn ANIn ADCS = 0 ANIm ANIm Conversion stopped. Conversion result does not remain. ADCR ANIn INTAD 442 Remarks 1. n = 0, 1, ..., 11 2. m = 0, 1, ..., 11 User's Manual U13850EJ6V0UD ANIn Stopped ANIm CHAPTER 11 A/D CONVERTER 11.5 Low Power Consumption Mode The V850/SB1 and V850/SB2 feature a function that can cut or connect the current between AVDD and AVREF. Switching can be performed by setting A/D converter mode register 2 (ADM2). When AVDD = AVREF, and when the system does not require high precision, current consumption can be reduced by connecting AVDD and AVREF in the normal mode or disconnecting them in standby mode after opening the AVREF pin. The conversion precision of the reference voltage is reduced since the reference voltage is supplied from AVDD via a switch. When the A/D converter is not used, cut the tap selector that reduces the current when A/D conversion is stopped (ADCS = 0), and the supply voltage (AVDD), in order to reduce the current consumption. * Set the ADPS bit of A/D converter mode register 1 (ADM1) to 1. * Clear the IEAD bit of A/D converter mode register 2 (ADM2) to 0. When the ADPS bit is cleared to 0 (comparator on) again, a stabilization time (5 s max.) is required until the A/D converter is started. Therefore, use software to ensure that a wait time of 5 s elapses. 11.6 Cautions (1) Current consumption in standby mode The A/D converter stops operation in the IDLE/STOP mode (operable in the HALT mode). At this time, the current consumption of the A/D converter can be reduced by stopping the conversion (by resetting the bit 7 (ADCS) of A/D converter mode register 1 (ADM1) to 0). To reduce the current consumption in the IDLE/STOP mode, set the AVREF potential in the user circuit to the same value (0 V) as the AVSS potential. (2) Input range of ANI0 to ANI11 Keep the input voltage of the ANI0 to ANI11 pins to within the rated range. If a voltage greater than or equal to AVREF or lower than or equal to AVSS (even within the range of the absolute maximum ratings) is input to a channel, the converted value of the channel becomes undefined. Moreover, the values of the other channels may also be affected. (3) Conflict <1> Conflict between writing A/D conversion result register (ADCR) and reading ADCR at end of conversion Reading ADCR takes precedence. After ADCR has been read, a new conversion result is written to ADCR. <2> Conflict between writing ADCR and external trigger signal input at end of conversion The external trigger signal is not input during A/D conversion. Therefore, the external trigger signal is not acknowledged during writing of ADCR. <3> Conflict between writing of ADCR and writing A/D converter mode register 1 (ADM1) or analog input channel specification register (ADS) When ADM1 or ADS write is performed immediately after ADCR write following the end of A/D conversion, the conversion result cannot be guaranteed since an undefined value is stored in the ADCR register. User's Manual U13850EJ6V0UD 443 CHAPTER 11 A/D CONVERTER (4) Countermeasures against noise To keep the resolution of 10 bits, prevent noise from being superimposed on the AVREF and ANI0 to ANI11 pins. The higher the output impedance of the analog input source, the heavier the influence of noise. To lower noise, connecting an external capacitor as shown in Figure 11-6 is recommended. Figure 11-6. Handling of Analog Input Pin Clamp with diode with a low VF (0.3 V MAX.) if noise higher than AVREF or lower than AVSS may be generated. Reference voltage input AVREF C = 100 to 1000 pF VDD AVDD AVSS VSS (5) ANI0 to ANI11 The analog input (ANI0 to ANI11) pins function alternately as port pins. To execute A/D conversion with any of ANI0 to ANI11 selected, do not execute an instruction that inputs data to the port during conversion; otherwise, the resolution may drop. If a digital pulse is applied to pins adjacent to the pin whose input signal is converted into a digital signal, the expected A/D conversion result may not be obtained because of the influence of coupling noise. Therefore, do not apply a pulse to the adjacent pins. (6) Input impedance of AVREF pin A series resistor string is connected between the AVREF and AVSS pins. If the output impedance of the reference voltage source is too high, the series resistor string between the AVREF and AVSS pins is connected in series, increasing the error of the reference voltage. 444 User's Manual U13850EJ6V0UD CHAPTER 11 A/D CONVERTER (7) Interrupt request flag (ADIF) The interrupt request flag (ADIF) is not cleared even if the contents of the analog input channel specification register (ADS) are changed. If the analog input pin is changed during conversion, therefore, the result of the A/D conversion of the preceding analog input signal and the conversion end interrupt request flag may be set immediately before ADS is rewritten. If ADIF is read immediately after ADS has been rewritten, it may be set despite the fact that conversion of the newly selected analog input signal has not been completed yet. When stopping A/D conversion and then resuming, clear ADIF before resuming conversion. Figure 11-7. A/D Conversion End Interrupt Generation Timing Rewriting ADS (ANIn conversion starts) A/D conversion ANIn ADCR Rewriting ADS (ANIm conversion starts) ANIn ANIn ANIm ANIn ADIF is set but conversion of ANIm is not completed. ANIm ANIm ANIm INTAD Remarks 1. n = 0, 1, ..., 11 2. m = 0, 1, ..., 11 User's Manual U13850EJ6V0UD 445 CHAPTER 11 A/D CONVERTER (8) AVDD pin The AVDD pin is the power supply pin of the analog circuit, and also supplies power to the input circuit of ANI0 to ANI11. Even in an application where a backup power supply is used, therefore, be sure to apply the same voltage as the VDD pin to the AVDD pin as shown in Figure 11-8. Figure 11-8. Handling of AVDD Pin AVREF VDD AVDD Main power supply Backup capacitor VSS AVSS (9) Reading out A/D converter result register (ADCR) A write operation to A/D converter mode register 1 (ADM1) and the analog input channel specification register (ADS) may cause the ADCR contents to be undefined. Therefore, read the A/D conversion result during A/D conversion (ADCS = 1). Incorrect conversion results may be read out at a timing other than the above. 446 User's Manual U13850EJ6V0UD CHAPTER 11 A/D CONVERTER 11.7 How to Read A/D Converter Characteristics Table Here, special terms unique to the A/D converter are explained. (1) Resolution This is the minimum analog input voltage that can be identified. That is, the percentage of the analog input voltage per bit of digital output is called 1LSB (Least Significant Bit). The percentage of 1LSB with respect to the full scale is expressed by %FSR (Full Scale Range). %FSR indicates the ratio of analog input voltage that can be converted as a percentage, and is always represented by the following formula regardless of the resolution. 1%FSR = (Max. value of analog input voltage that can be converted - Min. value of analog input voltage that can be converted)/100 = (AVREF - 0)/100 = AVREF/100 1LSB is as follows when the resolution is 10 bits. 10 1LSB = 1/2 = 1/1024 = 0.098%FSR Accuracy has no relation to resolution, but is determined by overall error. (2) Overall error This shows the maximum error value between the actual measured value and the theoretical value. Zero-scale error, full-scale error, linearity error and errors that are combinations of these express the overall error. Note that the quantization error is not included in the overall error in the characteristics table. Figure 11-9. Overall Error 1......1 Digital output Ideal line Overall error 0......0 AVREF 0 Analog input User's Manual U13850EJ6V0UD 447 CHAPTER 11 A/D CONVERTER (3) Quantization error When analog values are converted to digital values, a 1/2LSB error naturally occurs. In an A/D converter, an analog input voltage in a range of 1/2LSB is converted to the same digital code, so a quantization error cannot be avoided. Note that the quantization error is not included in the overall error, zero-scale error, full-scale error, integral linearity error, and differential linearity error in the characteristics table. Figure 11-10. Quantization Error Digital output 1......1 Quantization error 1/2LSB 1/2LSB 0......0 0 AVREF Analog input (4) Zero-scale error This shows the difference between the actual measurement value of the analog input voltage and the theoretical value (1/2 LSB) when the digital output changes from 0......000 to 0......001. Figure 11-11. Zero-Scale Error Digital output (Lower 3 bits) 111 Ideal line 100 Zero-scale error 011 010 001 000 -1 0 1 2 3 Analog input (LSB) 448 User's Manual U13850EJ6V0UD AVREF CHAPTER 11 A/D CONVERTER (5) Full-scale error This shows the difference between the actual measurement value of the analog input voltage and the theoretical value (3/2LSB) when the digital output changes from 1......110 to 1......111. Figure 11-12. Full-Scale Error Digital output (Lower 3 bits) Full-scale error 111 100 011 010 000 AVREF-3 AVREF-2 AVREF-1 AVREF 0 Analog input (LSB) (6) Differential linearity error While the ideal width of code output is 1LSB, this indicates the difference between the actual measurement value and the ideal value. Figure 11-13. Differential Linearity Error 1......1 Digital output Ideal 1LSB width Differential linearity error 0......0 AVREF 0 Analog input User's Manual U13850EJ6V0UD 449 CHAPTER 11 A/D CONVERTER (7) Integral linearity error This shows the degree to which the conversion characteristics deviate from the ideal linear relationship. It expresses the maximum value of the difference between the actual measurement value and the ideal straight line when the zero-scale error and full-scale error are 0. Figure 11-14. Integral Linearity Error 1......1 Digital output Ideal line Integral linearity error 0......0 AVREF 0 Analog input (8) Conversion time This expresses the time from when the analog input voltage was applied to the time when the digital output was obtained. The sampling time is included in the conversion time in the characteristics table. (9) Sampling time This is the time the analog switch is turned on for the analog voltage to be sampled by the sample & hold circuit. Figure 11-15. Sampling Time Sampling time 450 Conversion time User's Manual U13850EJ6V0UD CHAPTER 12 DMA FUNCTIONS 12.1 Functions The DMA (Direct Memory Access) controller transfers data between memory and peripheral I/Os based on DMA requests sent from on-chip peripheral hardware (such as the serial interface, timer, or A/D converter). This product includes six independent DMA channels that can transfer data in 8-bit and 16-bit units. The maximum number of transfers is 256 (when transferring data in 8-bit units). After a DMA transfer has occurred a specified number of times, DMA transfer completion interrupt (INTDMA0 to INTDMA5) requests are output individually from the various channels. The priority levels of the DMA channels are fixed as follows for simultaneous generation of multiple DMA transfer requests. DMA0 > DMA1 > DMA2 > DMA3 > DMA4 > DMA5 12.2 Transfer Completion Interrupt Request After a DMA transfer has occurred a specified number of times and the TCn bit in the corresponding DMA channel control register (DCHCn) has been set to 1, a DMA transfer completion interrupt request (INTDMA0 to INTDMA5) is sent to the interrupt controller for each channel. User's Manual U13850EJ6V0UD 451 CHAPTER 12 DMA FUNCTIONS 12.3 Configuration Figure 12-1. Block Diagram of DMA DMA transfer trigger (INT signal) DMA transfer request control DMA peripheral I/O address register n (DIOAn) DMA byte count register n (DBCn) DMA channel control register n (DCHCn) DMA transfer acknowledge signal CPU Channel controller DMA internal RAM address register n (DRAn) Interface control Internal RAM INTDMAn Internal bus Peripheral I/O register Remark n = 0 to 5 (1) DMA transfer request control block The DMA transfer request control block generates a DMA transfer request signal for the CPU when the required DMA transfer trigger (INT signal) is input. When the DMA transfer request signal is acknowledged, the CPU generates a DMA transfer acknowledge signal for the channel control block and interface control block after the current CPU processing has finished. For the INT signal, refer to the TTYPn1 and TTYPn0 bits in 12.4 (5) DMA channel control registers 0 to 5 (DCHC0 to DCHC5). (2) Channel control block The channel control block distinguishes the DMA transfer channel (DMA0 to DMA5) to be transferred and controls the internal RAM, peripheral I/O addresses, and access cycles (internal RAM: 1 clock, peripheral I/O register: 3 clocks) set by the peripheral I/O registers of the channel to be transferred, the transfer direction, and the transfer count. In addition, it also controls the priority order when two or more DMAn transfer triggers (INT signals) are generated simultaneously. 452 User's Manual U13850EJ6V0UD CHAPTER 12 DMA FUNCTIONS 12.4 Control Registers (1) DMA peripheral I/O address registers 0 to 5 (DIOA0 to DIOA5) These registers are used to set the peripheral I/O register address for DMA channel n. These registers are can be read/written in 16-bit units. After reset: DIOAn Undefined R/W Address: 15 14 13 12 11 10 0 0 0 0 0 0 DIOA0 FFFFF180H DIOA3 FFFFF1B0H DIOA1 FFFFF190H DIOA4 FFFFF1C0H DIOA2 FFFFF1A0H DIOA5 FFFFF100H 9 1 IOAn9 to IOAn1 0 0 (n = 0 to 5) Caution The following peripheral I/O registers must not be set. P4, P5, P6, P9, P11, PM4, PM5, PM6, PM9, PM11, MM, DWC, BCC, SYC, PSC, PCC, SYS, PRCMD, DIOAn, DRAn, DBCn, DCHCn, CORCN, CORRQ, CORADn, Interrupt control register (xxICn), ISPR User's Manual U13850EJ6V0UD 453 CHAPTER 12 DMA FUNCTIONS (2) DMA internal RAM address registers 0 to 5 (DRA0 to DRA5) These registers set DMA channel n internal RAM addresses (n = 0 to 5). Since each product has a different internal RAM capacity, the internal RAM areas that are usable for DMA differ depending on the product. The internal RAM areas that can be set in the DRAn registers for each product are shown below. Table 12-1. Internal RAM Area Usable in DMA Product Internal RAM Capacity V850/SB1 PD703031B, 703031BY V850/SB2 PD703034B, 703034BY V850/SB1 PD703031A, 703031AY, V850/SB2 PD703034A, 703034AY V850/SB1 PD703033A, 703033AY, 703033B, 703033BY, 70F3033A, 70F3033AY, 70F3033B, 70F3033BY V850/SB2 PD703035A, 703035AY, 703035B, 703035BY, 70F3035A, 70F3035AY, 70F3035B, 70F3035BY V850/SB1 PD703030B, 703030BY, 703032A, 703032AY, 703032B, 703032BY, 70F3030B, 70F3030BY, 70F3032A, 70F3032AY, 70F3032B, 70F3032BY V850/SB2 PD703036H, 703036HY, 703037A, 703037AY, 703037H, 703037HY, 70F3036H, 70F3036HY, 70F3037A, 70F3037AY, 70F3037H, 70F3037HY RAM Size Usable in DMA RAM Area Usable in DMA 8 KB 8 KB xxFFD000H to xxFFEFFFH 12 KB 12 KB xxFFC000H to xxFFEFFFH 16 KB 16 KB xxFFB000H to xxFFEFFFH 24 KB 16 KB xxFF9000H to xxFFBFFFH, xxFFE000H to xxFFEFFFH An address is incremented after each transfer is completed, when the DADn bit of the DCHDn register is 0. The incrementation value is "1" during 8-bit transfers and "2" during 16-bit transfers (n = 0 to 5). These registers are can be read/written in 16-bit units. After reset: DRAn Undefined 15 14 0 0 R/W Address: DRA0 FFFFF182H DRA3 FFFFF1B2H DRA1 FFFFF192H DRA4 FFFFF1C2H DRA2 FFFFF1A2H DRA5 FFFFF1D2H 13 0 RAn13 to RAn0 (n = 0 to 5) 454 User's Manual U13850EJ6V0UD CHAPTER 12 DMA FUNCTIONS The correspondence between DRAn setting value and internal RAM area is shown below. (a) V850/SB1 (PD703031B, 703031BY), V850/SB2 (PD703034B, 703034BY) Set the DRAn register to a value in the range of 0000H to 1FFFH (n = 0 to 5). Setting is prohibited for values between 2000H and 3FFFH. Figure 12-2. Correspondence Between DRAn Setting Value and Internal RAM (8 KB) (DRAn setting value) xxFFFFFFH xxFFF000H xxFFEFFFH On-chip peripheral I/O area (1FFFH) Internal RAM area 8 KB (usable for DMA) (0000H) xxFFD000H xxFFCFFFH Access-prohibited area xxFF8000H xxFF7FFFH Expansion ROM are Cautions 1. Do not set odd addresses for 16-bit transfer (DCHCn register DSn = 1). 2. While the increment function is being used (DCHCn register DDADn = 0), if the DRAn register value is set to 1FFFH, it will be incremented to 2000H, and will thus become a setting-prohibited value. Remark The DRAn register setting values are in parentheses. User's Manual U13850EJ6V0UD 455 CHAPTER 12 DMA FUNCTIONS (b) V850/SB1 (PD703031A, 703031AY), V850/SB2 (PD703034A, 703034AY) Set the DRAn register to a value in the range of 0000H to 2FFFH (n = 0 to 5). Setting is prohibited for values between 3000H and 3FFFH. Figure 12-3. Correspondence Between DRAn Setting Value and Internal RAM (12 KB) (DRAn setting value) xxFFFFFFH xxFFF000H xxFFEFFFH On-chip peripheral I/O area (2FFFH) Internal RAM area 12 KB (usable for DMA) (0000H) xxFFC000H xxFFBFFFH Access-prohibited area xxFF8000H xxFF7FFFH Expansion ROM area Cautions 1. Do not set odd addresses for 16-bit transfer (DCHCn register DSn = 1). 2. While the increment function is being used (DCHCn register DDADn = 0), if the DRAn register value is set to 2FFFH, it will be incremented to 3000H, and will thus become a setting-prohibited value. Remark 456 The DRAn register setting values are in parentheses. User's Manual U13850EJ6V0UD CHAPTER 12 DMA FUNCTIONS (c) V850/SB1 (PD703033A, 703033AY, 703033B, 703033BY, 70F3033A, 70F3033AY, 70F3033B, 70F3033BY) V850/SB2 (PD703035A, 703035AY, 703035B, 703035BY, 70F3035A, 70F3035AY, 70F3035B, 70F3035BY) Set the DRAn register to a value in the range of 000H to 2FFFH or 3000H to 3FFFH (n = 0 to 5). Figure 12-4. Correspondence Between DRAn Setting Value and Internal RAM (16 KB) (DRAn setting value) xxFFFFFFH xxFFF000H xxFFEFFFH On-chip peripheral I/O area (2FFFH) Internal RAM area 16 KB (usable for DMA) xxFFC000H xxFFBFFFH (0000H) (3FFFH) xxFFB000H xxFFAFFFH (3000H) Access-prohibited area xxFF8000H xxFF7FFFH Expansion ROM area Caution Do not set odd addresses for 16-bit transfer (DCHCn register DSn =1). Remark The DRAn register setting values are in parentheses. User's Manual U13850EJ6V0UD 457 CHAPTER 12 DMA FUNCTIONS (d) V850/SB1 (PD703030B, 703030BY, 703032A, 703032AY, 703032B, 703032BY, 70F3030B, 70F3030BY, 70F3032A, 70F3032AY, 70F3032B, 70F3032BY) V850/SB2 (PD703036H, 703036HY, 703037A, 703037AY, 703037H, 703037HY, 70F3036H, 70F3036HY, 70F3037A, 70F3037AY, 70F3037H, 70F3037HY) Set the DRAn register to a value in the range of 0000H to 0FFFH or 1000H to 3FFFH (n = 0 to 5). Figure 12-5. Correspondence Between DRAn Setting Value and Internal RAM (24 KB) (DRAn setting value) xxFFFFFFH xxFFF000H xxFFEFFFH On-chip peripheral I/O area (0FFFH) 4 KB (usable for DMA) (0000H) xxFFE000H xxFFDFFFH xxFFC000H xxFFBFFFH Internal RAM area (3FFFH) 12 KB (usable for DMA) xxFF9000H xxFF8FFFH xxFF8000H xxFF7FFFH (1000H) Access-prohibited area Expansion ROM area 458 Caution Do not set odd addresses for 16-bit transfer (DCHCn register DSn =1). Remark The DRAn register setting values are in parentheses. User's Manual U13850EJ6V0UD CHAPTER 12 DMA FUNCTIONS (3) DMA byte count registers 0 to 5 (DBC0 to DBC5) These are 8-bit registers that are used to set the number of transfers for DMA channel n. The remaining number of transfers is retained during the DMA transfers. A value of 1 is decremented once per transfer if the transfer is a byte (8-bit) transfer, and a value of 2 is decremented once per transfer if the transfer is a 16-bit transfer. The transfers are terminated when a borrow operation occurs. Accordingly, "number of transfers - 1" should be set for byte (8-bit) transfers and "(number of transfers - 1) x 2" should be set for 16-bit transfers. These registers are can be read/written in 8-bit units. After reset: Undefined DBCn R/W Address: DBC0 FFFFF184H DBC3 FFFFF1B4H DBC1 FFFFF194H DBC4 FFFFF1C4H DBC2 FFFFF1A4H DBC5 FFFFF1D4H 7 6 5 4 3 2 1 0 BCn7 BCn6 BCn5 BCn4 BCn3 BCn2 BCn1 BCn0 (n = 0 to 5) Caution Values set to bit 0 are ignored during 16-bit transfers. (4) DMA start factor expansion register (DMAS) This is an 8-bit register for expanding the factors that start DMA. The DMA start factor is decided according to the combination of TTYPn1 and TTYPn0 of the DCHCn register. For setting bits DMAS2 to DMAS0, refer to 12.4 (5) DMA channel control registers 0 to 5 (DCHC0 to DCHC5) (n = 0 to 5). This register can be read/written in 8/1-bit units. After reset: DMAS 00H R/W Address: FFFFF38EH 7 6 5 4 3 2 1 0 0 0 0 0 0 DMAS2 DMAS1 DMAS0 User's Manual U13850EJ6V0UD 459 CHAPTER 12 DMA FUNCTIONS (5) DMA channel control registers 0 to 5 (DCHC0 to DCHC5) These registers are used to control the DMA transfer operation mode for DMA channel n. These registers are can be read/written in 1-bit or 8-bit units. (1/2) After reset: DCHCn 00H R/W Address: DCHC0 FFFFF186H DCHC3 FFFFF1B6H DCHC1 FFFFF196H DCHC4 FFFFF1C6H DCHC2 FFFFF1A6H DCHC5 FFFFF1D6H <7> 6 <5> 4 3 <2> <1> <0> TCn 0 DDADn TTYPn1 TTYPn0 TDIRn DSn ENn (n = 0 to 5) DMA transfer completed/not completedNote 1 TCn 0 Not completed 1 Completed DDADn Internal RAM address count direction control 0 Increment 1 Address is fixed Channel n DMAS2 DMAS1 DMAS0 TTYPn1 TTYPn0 0 x x x 0 0 INTCSI0/INTIIC0Note 2 0 1 INTCSI1/INTSR0 1 0 INTAD 1 1 INTTM00 0 0 0 INTCSI0/INTIIC0Note 2 1 0 0 INTCSI1/INTSR0 x 0 1 INTST0 1 0 INTP0 1 1 INTTM10 0 0 INTIIC1Note 2 1 0 0 INTCSI3/INTSR1 x 0 1 INTP6 1 0 INTIE1 (V850/SB2 only) 1 1 INTAD 0 0 INTIIC1Note 2 1 0 0 INTCSI3/INTSR1 x 0 1 INTCSI2 1 0 INTIE1 (V850/SB2 only) 1 1 INTTM4 1 2 3 x x 0 x 0 x x x DMA transfer start factor setting Caution If an interrupt source is generated asynchronously to the internal system clock, do not set the interrupt source as multiple DMA transfer triggers at the same time (for example, when the serial interface is operated with external clock input). If it is set, the DMA transfer priority may be reversed. 460 User's Manual U13850EJ6V0UD CHAPTER 12 DMA FUNCTIONS (2/2) Channel n DMAS2 DMAS1 DMAS0 TTYPn1 TTYPn0 4 x x x 0 0 INTST1 0 1 INTCSI4 1 0 INTAD 1 1 INTTM2 0 0 INTCSI3/INTSR1 0 1 INTCSI4 1 0 INTCSI2 1 1 INTTM6 5 x x Transfer direction control between peripheral I/Os and internal RAMNote 3 TDIRn 0 From internal RAM to peripheral I/Os 1 From peripheral I/Os to internal RAM Control of transfer data size for DMA transferNote 3 DSn 0 8-bit transfer 1 16-bit transfer Control of DMA transfer enable/disable statusNote 4 ENn Notes x DMA transfer start factor setting 0 Disabled 1 Enabled (reset to 0 after DMA transfer is completed) 1. TCn (n = 0 to 5) is set to 1 when a specified number of transfers are completed, and is cleared to 0 when a write instruction is executed. 2 2. INTIIC0 and INTIIC1 are available only in the Y versions (products with on-chip I C). 3. Make sure that the transfer format conforms to the peripheral I/O register specifications (accessenabled data size, read/write, etc.) for the DMA peripheral I/O address register (DIOAn). 4. After the specified number of transfers are completed, this bit is cleared to 0. User's Manual U13850EJ6V0UD 461 CHAPTER 12 DMA FUNCTIONS 12.5 Operation When a DMA transfer request is generated during CPU processing, DMA transfer is started after the current CPU processing has finished. Regardless of the transfer direction, 4 CPU clocks (fCPU) are required for one DMA transfer. The 4 CPU clocks are divided as follows. * Internal RAM access: 1 clock * Peripheral I/O access: 3 clocks After one DMA transfer (8/16 bits) ends, control always shifts to the CPU processing. A DMA transfer operation timing chart is shown below. Figure 12-6. DMA Transfer Operation Timing fCPU DMA transfer processing signal DMA transfer acknowledge signal Processing format CPU processing Access destination for transfer from internal RAM to peripheral I/O DMA transfer processing CPU processing RAM Peripheral I/O Access destination for transfer from peripheral I/O to internal RAM Peripheral I/O RAM INTDMAn occurs when a DBCn register borrow occurs Remark n = 0 to 5 If two or more DMA transfer requests are generated simultaneously, the DMA transfer requests are executed in accordance with the following priority order: DMA0 > DMA1 > DMA2 > DMA3 > DMA4 > DMA5. While a higher priority DMA transfer request is being executed, the lower priority DMA transfer requests are held pending. After the higher priority DMA transfer ends, control always shifts to the CPU processing once, and then the lower priority DMA transfer is executed. The processing when the transfer requests DMA0 to DMA5 are generated simultaneously is shown below. 462 User's Manual U13850EJ6V0UD CHAPTER 12 DMA FUNCTIONS Figure 12-7. Processing When Transfer Requests DMA0 to DMA5 Are Generated Simultaneously CPU DAM0 CPU DAM1 CPU DAM2 CPU DAM3 CPU DAM4 CPU DAM5 CPU processing processing processing processing processing processing processing processing processing processing processing processing processing Transfer requests DMA0 to DMA5 are generated simultaneously DMA operation stops only in the IDLE/STOP mode. In the HALT mode, DMA operation continues. DMA also operates during the bus hold period and after access to the external memory. 12.6 Cautions When using the DMA function, if all the following conditions are met during the EI state (interrupt enable state), two interrupts occur when only one interrupt would occur normally. [Occurrence conditions] (i) A bit manipulation instruction (SET1, CLR1, NOT1, TST1) was executed to the interrupt request flag (xxIFn) of the interrupt control register (xxICn). (ii) An interrupt was processed by hardware at the same register as the register used in (i). Remark xx: Identifying name of peripheral unit (see Table 5-2) n: Peripheral unit number (see Table 5-2) For example, when using the DMA function, if an unmasked INTCSI0 interrupt occurs during bit manipulation of the interrupt request flag (CSIF0) of the CSIC0 register by the CLR1 instruction, INTCSI0 interrupt servicing occurs twice. Under such conditions, because the interrupt request flag (xxIF) is not cleared (0) by hardware when the interrupt servicing is acknowledged, the interrupt servicing is executed again after RETI instruction execution (interrupt servicing restoration). Therefore, use the DMA function under either of the following conditions. [Use conditions] (i) When bit manipulation is executed for the interrupt control register (xxICn), the DI instruction must be executed before the manipulation and the EI instruction must be executed after the manipulation. (ii) The interrupt request flag (xxIFn) must be cleared (0) at the start of the interrupt routine. Caution When the DMA function is not used, execution of (i) or (ii) is not necessary. Remark xx: Identification name of each peripheral unit (see Table 5-2) n: Peripheral unit number (see Table 5-2) User's Manual U13850EJ6V0UD 463 CHAPTER 12 DMA FUNCTIONS Figure 12-8. When Interrupt Servicing Occurs Twice During DMA Operation (1/2) (a) Normal interrupt servicing Main routine Interrupt servicing routine Interrupt request flag (xxIFn) is cleared (0). EI Interrupt request RETI (b) Interrupt servicing when interrupt servicing occurs twice Main routine Interrupt servicing routine Interrupt request flag (xxIFn) is not cleared and remains 1. EI Bit manipulation instruction to xxIFn Interrupt request Since the interrupt request flag (xxIFn) remains 1, the interrupt is serviced again. RETI Interrupt request flag (xxIFn) is cleared (0). RETI Remark xx: Identification name of each peripheral unit (see Table 5-2) n: Peripheral unit number (see Table 5-2) 464 User's Manual U13850EJ6V0UD CHAPTER 12 DMA FUNCTIONS Figure 12-8. When Interrupt Servicing Occurs Twice During DMA Operation (2/2) (c) Countermeasure (use condition (i)) Main routine EI Interrupt servicing routine DI Interrupt request flag (xxIFn) is cleared (0). Bit manipulation instruction to xxIFn Interrupt request EI The interrupt is serviced in the EI state (interrupt enable state) (the interrupt is not serviced immediately after bit manipulation instruction execution). RETI (d) Countermeasure (use condition (ii)) Main routine Interrupt servicing routine Interrupt request flag (xxIFn) is not cleared (0) and remains 1. EI Bit manipulation instruction to xxIFn xxIFn is cleared (0) at the start of the interrupt servicing routine Interrupt request EI RETI Remark xx: Identification name of each peripheral unit (see Table 5-2) n: Peripheral unit number (see Table 5-2) User's Manual U13850EJ6V0UD 465 CHAPTER 13 REAL-TIME OUTPUT FUNCTION (RTO) 13.1 Function The V850/SB1 and V850/SB2 incorporate a real-time output function (RTO) that transfers preset data to real-time output buffer registers (RTBL, RTBH) and then transfers this data with hardware to an external device via the output latches, upon the occurrence of an external interrupt or external trigger. Because RTO can output signals without jitter, it is suitable for controlling a stepper motor. The real-time output port can be set in port mode or real-time output port mode in 1-bit units. 13.2 Features { 8-bit real-time output unit { Port mode and real-time output mode can be selected in 1-bit units { 8 bits x 1 channel or 4 bits x 2 channels can be selected { Trigger signal: Selectable from the following three. External interrupt: RTPTRG Internal interrupt: INTTM4, INTTM5 466 User's Manual U13850EJ6V0UD CHAPTER 13 REAL-TIME OUTPUT FUNCTION (RTO) 13.3 Configuration A block diagram of RTO is shown below. Figure 13-1. Block Diagram of RTO Internal bus Real-time output port control register (RTPC) RTPOE RTPEG BYTE EXTR 4 RTPTRG INTTM4 Real-time output Real-time output buffer register, higher buffer register, lower 4 bits (RTBH) 4 bits (RTBL) Output trigger controller INTTM5 Real-time output port mode register (RTPM) RTP0 RTP1 RTP2 RTP3 RTP4 RTP5 RTP6 RTP7 Output latch RTO includes the following hardware. Table 13-1. Configuration of RTO Item Configuration Registers Real-time output buffer registers (RTBL, RTBH) Control registers Real-time output port mode register (RTPM) Real-time output port control register (RTPC) User's Manual U13850EJ6V0UD 467 CHAPTER 13 REAL-TIME OUTPUT FUNCTION (RTO) (1) Real-time output buffer registers (RTBL, RTBH) RTBL and RTBH are 4-bit registers that hold output data in advance. These registers are mapped to independent addresses in the peripheral I/O register area as shown in Figure 132. If an operation mode of 4 bits x 2 channels is specified, data can be individually set to RTBL and RTBH. The data of both the registers can be read all at once by specifying the address of either of the registers. If an operation mode of 8 bits x 1 channel is specified, 8-bit data can be set to both RTBL and RTBH respectively by writing the data to either of the registers. The data of both the registers can be read all at once by specifying the address of either of the registers. Figure 13-2 shows the configuration of RTBL and RTBH, and Table 13-2 shows the operation to be performed when RTBL and RTBH are manipulated. Figure 13-2. Configuration of Real-Time Output Buffer Registers Higher 4 bits Lower 4 bits RTBL RTBH Table 13-2. Operation When Real-Time Output Buffer Registers Are Manipulated Operation Mode Note 1 Higher 4 bits 4 bits x 2 channels 8 bits x 1 channel Note 2 Read Register to Be Manipulated Lower 4 bits Write Higher 4 bits Lower 4 bits RTBL RTBH RTBL Invalid RTBL RTBH RTBH RTBL RTBH Invalid RTBL RTBH RTBL RTBH RTBL RTBH RTBH RTBL RTBH RTBL Notes 1. Only the bits set in the real-time output port mode (RTPM) can be read. If a bit set in the port mode is read, 0 is read. 2. Set output data to RTBL and RTBH after setting the real-time output port and before the real-time output trigger is generated. (2) Output latch This is the output latch to which the value set by the real-time output buffer register (RTBL, RTBH) is automatically transferred when the real-time output trigger occurs. Output latches cannot be accessed. A port specified as a real-time output port cannot set data to the port output latch. To set the initial values of the real-time output port, set data to the port output latch in the port mode and then set to the real-time output port mode (refer to 13.5 Usage). 468 User's Manual U13850EJ6V0UD CHAPTER 13 REAL-TIME OUTPUT FUNCTION (RTO) 13.4 RTO Control Registers RTO is controlled by using the following two types of registers. * Real-time output port mode register (RTPM) * Real-time output port control register (RTPC) (1) Real-time output port mode register (RTPM) This register selects real-time output port mode or port mode in 1-bit units. RTPM is set by an 8-bit or 1-bit memory manipulation instruction. RESET input clears RTPM to 00H. After reset: 00H RTPM R/W Address: FFFFF3A4H 7 6 5 4 3 2 1 0 RTPM7 RTPM6 RTPM5 RTPM4 RTPM3 RTPM2 RTPM1 RTPM0 RTPMn Selection of real-time output port (n = 0 to 7) 0 Port mode 1 Real-time output port mode Cautions 1. Set a port pin to the output mode when it is used as a real-time output port pin. 2. A port specified as a real-time output port cannot set data to the port output latch. To set the initial values of the real-time output port, set data to the port output latch in the port mode and then set to the real-time output port mode (refer to 13.5 Usage). User's Manual U13850EJ6V0UD 469 CHAPTER 13 REAL-TIME OUTPUT FUNCTION (RTO) (2) Real-time output port control register (RTPC) This register sets the operation mode and output trigger of the real-time output port. The relationship between the operation mode and output trigger of the real-time output port is as shown in Table 133. RTPC is set by an 8-bit or 1-bit memory manipulation instruction. RESET input clears RTPC to 00H. After reset: 00H RTPC R/W Address: FFFFF3A6H <7> <6> <5> <4> 3 2 1 0 RTPOE RTPEG BYTE EXTR 0 0 0 0 RTPOE Control of operation of real-time output port Note 0 Disable operation 1 Enable operation RTPEG Valid edge of RTPTRG 0 Falling edge 1 Rising edge BYTE Operation mode of real-time output port 0 4 bits x 2 channels 1 8 bits x 1 channel EXTR Control of real-time output by RTPTRG signal 0 Do not use RTPTRG as real-time output trigger 1 Use RTPTRG as real-time output trigger Note RTP0 to RTP7 output 0 if the real-time output operation is disabled (RTPOE = 0). Table 13-3. Operation Mode and Output Trigger of Real-Time Output Port BYTE EXTR 0 0 Operation Mode 4 bits x 2 channels 1 1 0 1 470 8 bits x 1 channel RTBH Port Output RTBL Port Output INTTM5 INTTM4 INTTM4 RTPTRG INTTM4 RTPTRG User's Manual U13850EJ6V0UD CHAPTER 13 REAL-TIME OUTPUT FUNCTION (RTO) 13.5 Usage (1) Disable the real-time output operation. Clear bit 7 (RTPOE) of the real-time output port control register (RTPC) to 0. (2) Initial setting (i) Set the value to be output first to the real-time output port to the output latch of port 10. (ii) Set the PM10 register to output mode. (iii) Specify the real-time output port mode or port mode in 1-bit units. Set the real-time output port mode register (RTPM). (iv) Select a trigger and valid edge. Set bits 4, 5, and 6 (EXTR, BYTE, and RTPEG) of RTPC. (v) Set the same value as (i) to the real-time output buffer registers (RTBH and RTBL). (3) Enable the real-time output operation. Set RTPOE to 1. (4) Set the output latches (P100 to P107) of port 10 to 0, and the next output to RTBH and RTBL before the selected transfer trigger is generated. (5) Set the next real-time output value to RTBH and RTBL by interrupt servicing corresponding to the selected trigger. User's Manual U13850EJ6V0UD 471 CHAPTER 13 REAL-TIME OUTPUT FUNCTION (RTO) 13.6 Operation If the real-time output operation is enabled by setting bit 7 (RTPOE) of the real-time output port control register (RTPC) to 1, the data of the real-time output buffer registers (RTBH and RTBL) is transferred to the output latch in Note synchronization with the generation of the selected transmit trigger (set by EXTR and BYTE ). Of the transferred data, only the data of the bits specified in the real-time output mode by the real-time output port mode register (RTPM) is output from the bits of RTP0 to RTP7. The bits specified in the port mode by RTPM output 0. If the real-time output operation is disabled by clearing RTPOE to 0, RTP0 to RTP7 output 0 regardless of the setting of RTPM. Note EXTR: Bit 4 of the real-time output port control register (RTPC) BYTE: Bit 5 of the real-time output port control register (RTPC) Figure 13-3. Example of Operation Timing of RTO (When EXTR = 0, BYTE = 0) INTTM5 (internal) INTTM4 (internal) A CPU operation RTBH RTBL RT output latch (H) RT output latch (L) B D01 A B D02 A D03 D11 D12 D01 D13 D02 D11 A D14 D04 D03 D12 B: Software processing by interrupt request input to INTTM4 (RTBL write) User's Manual U13850EJ6V0UD B D04 A: Software processing by interrupt request input to INTTM5 (RTBH write) 472 B D13 D14 CHAPTER 13 REAL-TIME OUTPUT FUNCTION (RTO) 13.7 Cautions (1) Before performing initialization, disable the real-time output operation by clearing bit 7 (RTPOE) of the real-time output port control register (RTPC) to 0. (2) Once the real-time output operation is disabled (RTPOE = 0), be sure to set the same initial value as the output latch to the real-time output buffer registers (RTBH and RTBL) before enabling the real-time output operation (RTPOE = 0 1). (3) Operation cannot be guaranteed if a conflict between the following signals occurs. Use software to avoid a conflict. * Conflict between the switch operation from the RTP mode to the port mode (RTPOE = 1) and the valid edge of the selected real-time output port trigger * Conflict between the write operation to the real-time output buffer register (RTBL, RTBH) in the RTP mode and the valid edge of the selected real-time output port trigger User's Manual U13850EJ6V0UD 473 CHAPTER 14 PORT FUNCTION 14.1 Port Configuration The V850/SB1 and V850/SB2 include 83 I/O port pins from ports 0 to 11 (12 port pins are input only). There are three power supplies for the I/O buffers: AVDD, BVDD, and EVDD, which are described below. Table 14-1. Pin I/O Buffer Power Supplies Power Supply Corresponding Pins Usable Voltage Range AVDD Port 7, port 8 When using A/D converter: 4.5 V AVDD 5.5 V When using A/D converter: 3.5 V AVDD 5.5 V BVDD Port 4, port 5, port 6, port 9, CLKOUT 3.0 V BVDD 5.5 V EVDD Port 0, port 1, port 2, port 3, port 10, port 11, RESET 3.0 V EVDD 5.5 V Caution The electrical specifications in the case of 3.0 to up to 4.0 V are different from those for 4.0 to 5.5 V. 14.2 Port Pin Function 14.2.1 Port 0 Port 0 is an 8-bit I/O port for which I/O settings can be controlled in 1-bit units. A pull-up resistor can be connected in 1-bit units (software pull-up function). When using P00 to P04 as the NMI or INTP0 to INTP3 pins, noise is eliminated by an analog noise eliminator. When using P05 to P07 as the INTP4/ADTRG, INTP5/RTPTRG, and INTP6 pins, noise is eliminated by a digital noise eliminator. After reset: P0 00H R/W Address: FFFFF000H 7 6 5 4 3 2 1 0 P07 P06 P05 P04 P03 P02 P01 P00 P0n Remark Control of output data (in output mode) (n = 0, 1) 0 Output 0 1 Output 1 In input mode: When the P0 register is read, the pin levels at that time are read. Writing to P0 writes the values to that register. This does not affect the input pins. In output mode: When the P0 register is read, the P0 register's values are read. Writing to P0 writes the values to that register, and those values are immediately output. 474 User's Manual U13850EJ6V0UD CHAPTER 14 PORT FUNCTION Port 0 includes the following alternate functions. Table 14-2. Port 0 Alternate Function Pins Pin Name Port 0 Alternate Function P00 NMI P01 INTP0 P02 INTP1 P03 INTP2 P04 INTP3 P05 INTP4/ADTRG P06 INTP5/RTPTRG P07 INTP6 I/O PULLNote I/O Yes Remark Analog noise elimination Digital noise elimination Note Software pull-up function (1) Function of P0 pins Port 0 is an 8-bit I/O port for which I/O settings can be controlled in 1-bit units. I/O settings are controlled via the port 0 mode register (PM0). In output mode, the values set to each bit are output to the port 0 register (P0). When using this port in output mode, either the valid edge of each interrupt request should be made invalid or each interrupt request should be masked (except for NMI requests). When using this port in input mode, the pin statuses can be read by reading the P0 register. Also, the P0 register (output latch) values can be read by reading the P0 register while in output mode. The valid edge of NMI and INTP0 to INTP6 are specified via rising edge specification register 0 (EGP0) and falling edge specification register 0 (EGN0). A pull-up resistor can be connected in 1-bit units when specified via pull-up resistor option register 0 (PU0). When a reset is input, the settings are initialized to input mode. Also, the valid edge of each interrupt request becomes invalid (NMI and INTP0 to INTP6 do not function immediately after reset). (2) Noise elimination (a) Elimination of noise from NMI and INTP0 to INTP3 pins An on-chip noise eliminator uses analog delay to eliminate noise. Consequently, if a signal having a constant level is input for longer than a specified time to these pins, it is detected as a valid edge. Such edge detection occurs after the specified amount of time. (b) Elimination of noise from INTP4 to INTP6, ADTRG, and RTPTRG pins A digital noise eliminator is provided on chip. This circuit uses digital sampling. A pin's input level is detected using a sampling clock (fXX), and noise elimination is performed for the INTP4, INTP5, ADTRG, and RTPTRG pins if the same level is not detected three times consecutively. The noise-elimination width can be changed for the INTP6 pin (see 5.3.8 (3) Noise elimination of INTP6 pin). User's Manual U13850EJ6V0UD 475 CHAPTER 14 PORT FUNCTION Cautions 1. If the input pulse width is 2 to 3 clocks, whether it will be detected as a valid edge or eliminated as noise is undefined. 2. To ensure correct detection of pulses as pulses, constant-level input is required for 3 clocks or more. 3. If noise is occurring in synchronization with the sampling clock, it may not be recognized as noise. In such cases, attach a filter to the input pins to eliminate the noise. 4. Noise elimination is not performed when these pins are used as an normal input port pins. (3) Control registers (a) Port 0 mode register (PM0) PM0 can be read/written in 8-bit or 1-bit units. After reset: PM0 FFH R/W Address: FFFFF020H 7 6 5 4 3 2 1 0 PM07 PM06 PM05 PM04 PM03 PM02 PM01 PM00 PM0n Control of I/O mode (n = 0 to 7) 0 Output mode 1 Input mode (b) Pull-up resistor option register 0 (PU0) PU0 can be read/written in 8-bit or 1-bit units. After reset: PU0 00H R/W Address: FFFFF080H 7 6 5 4 3 2 1 0 PU07 PU06 PU05 PU04 PU03 PU02 PU01 PU00 PU0n 476 Control of on-chip pull-up resistor connection (n = 0 to 7) 0 Do not connect 1 Connect User's Manual U13850EJ6V0UD CHAPTER 14 PORT FUNCTION (c) Rising edge specification register 0 (EGP0) EGP0 can be read/written in 8-bit or 1-bit units. After reset: EGP0 00H R/W Address: FFFFF0C0H <7> <6> <5> <4> <3> <2> <1> <0> EGP07 EGP06 EGP05 EGP04 EGP03 EGP02 EGP01 EGP00 EGP0n Control of rising edge detection (n = 0 to 7) 0 Interrupt request signal did not occur at rising edge 1 Interrupt request signal occurred at rising edge Remark n = 0: Control of NMI pin n = 1 to 7: Control of INTP0 to INTP6 pins (d) Falling edge specification register 0 (EGN0) EGN0 can be read/written in 8-bit or 1-bit units. After reset: EGN0 00H R/W Address: FFFFF0C2H <7> <6> <5> <4> <3> <2> <1> <0> EGN07 EGN06 EGN05 EGN04 EGN03 EGN02 EGN01 EGN00 EGN0n Control of falling edge detection (n = 0 to 7) 0 Interrupt request signal did not occur at falling edge 1 Interrupt request signal occurred at falling edge Remark n = 0: Control of NMI pin n = 1 to 7: Control of INTP0 to INTP6 pins User's Manual U13850EJ6V0UD 477 CHAPTER 14 PORT FUNCTION (4) Block diagram (Port 0) Figure 14-1. Block Diagram of P00 to P07 VDD WRPU PU0 P-ch PU0n RD Internal bus Selector P00/NMI P01/INTP0 P02/INTP1 P03/INTP2 P04/INTP3 P05/INTP4/ADTRG P06/INTP5/RTPTRG P07/INTP6 WRPORT Output latch (P0n) WRPM PM0 PM0n Remarks 1. PU0: Pull-up resistor option register 0 PM0: Port 0 mode register RD: Port 0 read signal WR: Port 0 write signal 2. n = 0 to 7 478 User's Manual U13850EJ6V0UD CHAPTER 14 PORT FUNCTION 14.2.2 Port 1 Port 1 is a 6-bit I/O port for which I/O settings can be controlled in 1-bit units. A pull-up resistor can be connected in 1-bit units (software pull-up function). Bits 0, 1, 2, 4, and 5 are selectable as normal outputs or N-ch open-drain outputs. After reset: 00H R/W P1 Address: FFFFF002H 7 6 5 4 3 2 1 0 0 0 P15 P14 P13 P12 P11 P10 P1n Remark Control of output data (in output mode) (n = 0 to 5) 0 Output 0 1 Output 1 In input mode: When the P1 register is read, the pin levels at that time are read. Writing to P1 writes the values to that register. This does not affect the input pins. In output mode: When the P1 register is read, the P1 register's values are read. Writing to P1 writes the values to that register, and those values are immediately output. Port 1 includes the following alternate functions. SDA0 and SCL0 pins are available only in the Y versions 2 (products with on-chip I C). Table 14-3. Port 1 Alternate Function Pins Pin Name Port 1 Alternate Function I/O I/O PULLNote Yes Remark P10 SI0/SDA0 Selectable as N-ch open-drain output P11 SO0 P12 SCK0/SCL0 P13 SI1/RXD0 - P14 SO1/TXD0 Selectable as N-ch open-drain output P15 SCK1/ASCK0 Note Software pull-up function User's Manual U13850EJ6V0UD 479 CHAPTER 14 PORT FUNCTION (1) Function of P1 pins Port 1 is a 6-bit I/O port for which I/O settings can be controlled in 1-bit units. I/O settings are controlled via the port 1 mode register (PM1). In output mode, the values set to each bit are output to the port 1 register (P1). The port 1 function register (PF1) can be used to specify whether P10 to P12, P14, and P15 are normal outputs or N-ch open-drain outputs. When using this port in input mode, the pin statuses can be read by reading the P1 register. Also, the P1 register (output latch) values can be read by reading the P1 register while in output mode. A pull-up resistor can be connected in 1-bit units when specified via pull-up resistor option register 1 (PU1). Clear the P1 and PM1 registers to 0 when using alternate-function pins as outputs. The ORed result of the port output and the alternate-function pin is output from the pins. When a reset is input, the settings are initialized to input mode. (2) Control registers (a) Port 1 mode register (PM1) PM1 can be read/written in 8-bit or 1-bit units. After reset: 3FH PM1 R/W Address: FFFFF022H 7 6 5 4 3 2 1 0 0 0 PM15 PM14 PM13 PM12 PM11 PM10 PM1n Control of I/O mode (n = 0 to 5) 0 Output mode 1 Input mode (b) Pull-up resistor option register 1 (PU1) PU1 can be read/written in 8-bit or 1-bit units. After reset: PU1 00H R/W Address: FFFFF082H 7 6 5 4 3 2 1 0 0 0 PU15 PU14 PU13 PU12 PU11 PU10 PU1n 480 Control of on-chip pull-up resistor connection (n = 0 to 5) 0 Do not connect 1 Connect User's Manual U13850EJ6V0UD CHAPTER 14 PORT FUNCTION (c) Port 1 function register (PF1) PF1 can be read/written in 8-bit or 1-bit units. After reset: 00H R/W 7 PF1 Address: FFFFF0A2H 6 0 5 0 4 PF15 PF1n PF14 3 Note 0 2 1 0 PF12 PF11 PF10 Control of normal output/N-ch open-drain output (n = 0 to 2, 4, 5) 0 Normal output 1 N-ch open-drain output Note Bit 3 is fixed as a normal output. (3) Block diagram (Port 1) Figure 14-2. Block Diagram of P10 to P12, P14, and P15 VDD WRPU PU1 P-ch PU1n RD Internal bus Selector WRPF PF1 VDD PF1n WRPORT Output latch (P1n) WRPM P10/SI0/SDA0Note P11/SO0 P12/SCK0/SCL0Note P14/SO1/TxD0 P15/SCK1/ASCK0 P-ch PM1 N-ch PM1n Alternate function Note 2 The SDA0 and SCL0 pins are available only in the Y versions (products with on-chip I C). Remarks 1. PU1: Pull-up resistor option register 1 PF1: Port 1 function register PM1: Port 1 mode register RD: Port 1 read signal WR: Port 1 write signal 2. n = 0 to 2, 4, 5 User's Manual U13850EJ6V0UD 481 CHAPTER 14 PORT FUNCTION Figure 14-3. Block Diagram of P13 VDD WRPU PU1 P-ch PU13 RD Internal bus Selector WRPORT Output latch (P13) WRPM P13/SI1/RxD0 PM1 PM13 Alternate function Remark PU1: Pull-up resistor option register 1 PM1: Port 1 mode register 482 RD: Port 1 read signal WR: Port 1 write signal User's Manual U13850EJ6V0UD CHAPTER 14 PORT FUNCTION 14.2.3 Port 2 Port 2 is an 8-bit I/O port for which I/O settings can be controlled in 1-bit units. A pull-up resistor can be connected in 1-bit units (software pull-up function). P20, P21, P22, P24 and P25 are selectable as normal outputs or N-ch open-drain outputs. When P26 and P27 are used as the TI2 and TI3 pins, noise is eliminated from these pins by a digital noise eliminator. 00H After reset: P2 R/W Address: FFFFF004H 7 6 5 4 3 2 1 0 P27 P26 P25 P24 P23 P22 P21 P20 P2n Remark Control of output data (in output mode) (n = 0 to 7) 0 Outputs 0 1 Outputs 1 In input mode: When the P2 register is read, the pin levels at that time are read. Writing to P2 writes the values to that register. This does not affect the input pins. In output mode: When the P2 register is read, the P2 register's values are read. Writing to P2 writes the values to that register, and those values are immediately output. Port 2 includes the following alternate functions. SDA1 and SCL1 are available only in the Y versions (products 2 with on-chip I C). Table 14-4. Port 2 Alternate Function Pins Pin Name Port 2 Alternate Function I/O I/O PULLNote Yes Remark Selectable as N-ch open-drain output P20 SI2/SDA1 P21 SO2 P22 SCK2/SCL1 P23 SI3/RXD1 - P24 SO3/TXD1 Selectable as N-ch open-drain output P25 SCK3/ASCK1 P26 TI2/TO2 P27 TI3/TO3 Digital noise elimination Note Software pull-up function User's Manual U13850EJ6V0UD 483 CHAPTER 14 PORT FUNCTION (1) Function of P2 pins Port 2 is an 8-bit I/O port for which I/O settings can be controlled in 1-bit units. I/O settings are controlled via the port 2 mode register (PM2). In output mode, the values set to each bit are output to the port 2 register (P2). The port 2 function register (PF2) can be used to specify whether P20, P21, P22, P24 and P25 are normal outputs or N-ch open-drain outputs. When using this port in input mode, the pin statuses can be read by reading the P2 register. Also, the P2 register (output latch) values can be read by reading the P2 register while in output mode. A pull-up resistor can be connected in 1-bit units when specified via pull-up resistor option register 2 (PU2). When using the alternate function as TI2 and TI3 pins, noise elimination is provided by a digital noise eliminator (same as digital noise eliminator for port 0). Clear the P2 and PM2 registers to 0 when using alternate-function pins as outputs. The ORed result of the port output and the alternate-function pin is output from the pins. When a reset is input, the settings are initialized to input mode. (2) Control registers (a) Port 2 mode register (PM2) PM2 can be read/written in 8-bit or 1-bit units. After reset: PM2 FFH R/W Address: FFFFF024H 7 6 5 4 3 2 1 0 PM27 PM26 PM25 PM24 PM23 PM22 PM21 PM20 PM2n 484 Control of I/O mode (n = 0 to 7) 0 Output mode 1 Input mode User's Manual U13850EJ6V0UD CHAPTER 14 PORT FUNCTION (b) Pull-up resistor option register 2 (PU2) PU2 can be read/written in 8-bit or 1-bit units. After reset: PU2 00H R/W Address: FFFFF084H 7 6 5 4 3 2 1 0 PU27 PU26 PU25 PU24 PU23 PU22 PU21 PU20 PU2n Control of on-chip pull-up resistor connection (n = 0 to 7) 0 Do not connect 1 Connect (c) Port 2 function register (PF2) PF2 can be read/written in 8-bit or 1-bit units. After reset: PF2 00H R/W Address: FFFFF0A4H 7 6 5 4 3 2 1 0 0 0 PF25 PF24 0 PF22 PF21 PF20 PF2n Control of normal output/N-ch open-drain output (n = 0 to 2, 4, 5) 0 Normal output 1 N-ch open-drain output User's Manual U13850EJ6V0UD 485 CHAPTER 14 PORT FUNCTION (3) Block diagram (Port 2) Figure 14-4. Block Diagram of P20 to P22, P24, and P25 VDD WRPU PU2 P-ch PU2n RD Internal bus Selector WRPF PF2 VDD PF2n WRPORT Output latch (P2n) WRPM P20/SI2/SDA1Note P21/SO2 P22/SCK2/SCL1Note P24/SO3/TxD1 P25/SCK3/ASCK1 P-ch PM2 N-ch PM2n Alternate function Note 2 The SDA1 and SCL1 pins are available only in the Y versions (products with on-chip I C). Remarks 1. PU2: Pull-up resistor option register 2 PF2: Port 2 function register PM2: Port 2 mode register RD: Port 2 read signal WR: Port 2 write signal 2. n = 0 to 2, 4, 5 486 User's Manual U13850EJ6V0UD CHAPTER 14 PORT FUNCTION Figure 14-5. Block Diagram of P23, P26, and P27 VDD WRPU PU1 P-ch PU13 RD Internal bus Selector WRPORT Output latch (P13) WRPM P13/SI1/RxD0 PM1 PM13 Alternate function Remarks 1. PU2: Pull-up resistor option register 2 PM2: Port 2 mode register RD: Port 2 read signal WR: Port 2 write signal 2. n = 3 , 6, or 7 User's Manual U13850EJ6V0UD 487 CHAPTER 14 PORT FUNCTION 14.2.4 Port 3 Port 3 is an 8-bit I/O port for which I/O settings can be controlled in 1-bit units. A pull-up resistor can be connected in 1-bit units (software pull-up function). Either a normal output or N-ch open-drain out can be selected for P33 and P34. When using P36 and P37 as the TI4 and TI5 pins, noise is eliminated by the digital noise eliminator. After reset: 00H P3 R/W Address: FFFFF006H 7 6 5 4 3 2 1 0 P37 P36 P35 P34 P33 P32 P31 P30 P3n Remark Control of output data (In output mode) (n = 0 to 7) 0 Output 0 1 Output 1 In input mode: When the P3 register is read, the pin levels at that time are read. Writing to P3 writes the values to that register. This does not affect the input pins. In output mode: When the P3 register is read, the P3 register's values are read. Writing to P3 writes the values to that register, and those values are immediately output. Port 3 includes the following alternate functions. Table 14-5. Port 3 Alternate Function Pins Pin Name Port 3 Alternate Function P30 TI00 P31 TI01 P32 TI10/SI4 P33 TI11/SO4 P34 TO0/A13/SCK4 P35 TO1/A14 P36 TI4/TO4/A15 P37 TI5/TO5 I/O I/O PULLNote Yes - Selectable as N-ch open-drain output. - Digital noise elimination Note Software pull-up function 488 Remark User's Manual U13850EJ6V0UD CHAPTER 14 PORT FUNCTION (1) Function of P3 pins Port 3 is an 8-bit I/O port for which I/O settings can be controlled in 1-bit units. I/O settings are controlled via the port 3 mode register (PM3). In output mode, the values set to each bit are output to the port 3 register (P3). The port 3 function register (PF3) can be used to specify whether P33 and P34 are normal outputs or N-ch open-drain outputs. When using this port in input mode, the pin statuses can be read by reading the P3 register. Also, the P3 register (output latch) values can be read by reading the P3 register while in output mode. A pull-up resistor can be connected in 1-bit units when specified via pull-up resistor option register 3 (PU3). When using the alternate-function TI4 and TI5 pins, noise elimination is provided by a digital noise eliminator (same as digital noise eliminator for port 0). When using the alternate-function A13 to A15 pins, set the pin functions via the memory address output mode register (MAM). At this time, be sure to set the PM3 registers (PM34, PM35, PM36) and the P3 registers (P34, P35, P36) to 0. Clear the P3 and PM3 registers to 0 when using alternate-function pins as outputs. The ORed result of the port output and the alternate-function pin is output from the pins. When a reset is input, the settings are initialized to input mode. (2) Control registers (a) Port 3 mode register (PM3) PM3 can be read/written in 8-bit or 1-bit units. After reset: PM3 FFH R/W Address: FFFFF026H 7 6 5 4 3 2 1 0 PM37 PM36 PM35 PM34 PM33 PM32 PM31 PM30 PM3n Control of I/O mode (n = 0 to 7) 0 Output mode 1 Input mode (b) Pull-up resistor option register 3 (PU3) PU3 can be read/written in 8-bit or 1-bit units. After reset: PU3 00H R/W Address: FFFFF086H 7 6 5 4 3 2 1 0 PU37 PU36 PU35 PU34 PU33 PU32 PU31 PU30 PU3n Control of on-chip pull-up resistor connection (n = 0 to 7) 0 Do not connect 1 Connect User's Manual U13850EJ6V0UD 489 CHAPTER 14 PORT FUNCTION (c) Port 3 function register (PF3) PF3 can be read/written in 8-bit or 1-bit units. After reset: 00H PF3 R/W Address: FFFFF0A6H 7 6 5 4 3 2 1 0 0 0 0 PF34 PF33 0 0 0 PF3n Control of normal output/N-ch open-drain output (n = 3, 4) 0 Normal output 1 N-ch open-drain output (3) Block diagram (Port 3) Figure 14-6. Block Diagram of P30 to P32 and P35 to P37 VDD WRPU PU3 PU3n P-ch RD Internal bus Selector WRPORT P30/TI00 P31/TI01 P32/TI10/SI4 P35/TO1/A14 P36/TI4/TO4/A15 P37/TI5/TO5 Output latch (P3n) WRPM PM3 PM3n Alternate function Remarks 1. PU3: Pull-up resistor option register 3 PM3: Port 3 mode register RD: Port 3 read signal WR: Port 3 write signal 2. n = 0 to 2, 5 to 7 490 User's Manual U13850EJ6V0UD CHAPTER 14 PORT FUNCTION Figure 14-7. Block Diagram of P33 and P34 VDD WRPU PU3 P-ch PU3n RD Internal bus Selector WRPF PF3 VDD PF3n WRPORT Output latch (P3n) WRPM P-ch PM3 N-ch P33/TI11/SO4 P34/TO0/A13/SCK4 PM3n Alternate function Remarks 1. PU3: Pull-up resistor option register 3 RF3: Port 3 function register PM3: Port 3 mode register RD: Port 3 read signal WR: Port 3 write signal 2. n = 3, 4 User's Manual U13850EJ6V0UD 491 CHAPTER 14 PORT FUNCTION 14.2.5 Ports 4 and 5 Ports 4 and 5 are 8-bit I/O ports for which I/O settings can be controlled in 1-bit units. After reset: 00H Pn R/W Address: FFFFF008H, FFFFF00AH 7 6 5 4 3 2 1 0 Pn7 Pn6 Pn5 Pn4 Pn3 Pn2 Pn1 Pn0 Pnx Remark Control of output data (in output mode) (n = 4, 5, x = 0 to 7) 0 Output 0 1 Output 1 In input mode: When the P4 and P5 registers are read, the pin levels at that time are read. Writing to P4 and P5 writes the values to those registers. This does not affect the input pins. In output mode: When the P4 and P5 registers are read, their values are read. Writing to P4 and P5 writes the values to those registers, and those values are immediately output. Ports 4 and 5 include the following alternate functions. Table 14-6. Alternate Function Pins of Ports 4 and 5 Pin Name Port 4 Port 5 Alternate Function P40 AD0 P41 AD1 P42 AD2 P43 AD3 P44 AD4 P45 AD5 P46 AD6 P47 AD7 P50 AD8 P51 AD9 P52 AD10 P53 AD11 P54 AD12 P55 AD13 P56 AD14 P57 AD15 I/O PULLNote I/O No - I/O No - Note Software pull-up function 492 Remark User's Manual U13850EJ6V0UD CHAPTER 14 PORT FUNCTION (1) Functions of P4 and P5 pins Ports 4 and 5 are 8-bit I/O ports for which I/O settings can be controlled in 1-bit units. I/O settings are controlled via the port 4 mode register (PM4) the and port 5 mode register (PM5). In output mode, the values set to each bit are output to the port 4 and 5 registers (P4 and P5). When using these ports in input mode, the pin statuses can be read by reading the P4 and P5 registers. Also, the P4 and P5 register (output latch) values can be read by reading the P4 and P5 registers while in output mode. A software pull-up function is not implemented. When using the alternate function as AD0 to AD15, set the pin functions via the memory expansion register (MM). This does not affect the PM4 and PM5 registers. When a reset is input, the settings are initialized to input mode. (2) Control register (a) Port 4 mode register and port 5 mode register (PM4 and PM5) PM4 and PM5 can be read/written in 1-bit or 8-bit units. After reset: PMn FFH R/W Address: FFFFF028H, FFFFF02AH 7 6 5 4 3 2 1 0 PMn7 PMn6 PMn5 PMn4 PMn3 PMn2 PMn1 PMn0 (n = 4, 5) PMnx Control of I/O mode (n = 4, 5, x = 0 to 7) 0 Output mode 1 Input mode User's Manual U13850EJ6V0UD 493 CHAPTER 14 PORT FUNCTION (3) Block diagram (Ports 4 and 5) Figure 14-8. Block Diagram of P40 to P47 and P50 to P57 RD Internal bus Selector WRPORT Output latch (mn) WRPM Pmn/ADx PMm PMmn Remarks 1. PMm: Port m mode register RD: Port m read signal WR: Port m write signal 2. m = 4, 5 n = 0 to 7 x = 0 to 15 494 User's Manual U13850EJ6V0UD CHAPTER 14 PORT FUNCTION 14.2.6 Port 6 Port 6 is a 6-bit I/O port for which I/O settings can be controlled in 1-bit units. After reset: 00H R/W P6 Address: FFFFF00CH 7 6 5 4 3 2 1 0 0 0 P65 P64 P63 P62 P61 P60 P6n Remark Control of output data (in output mode) (n = 0 to 5) 0 Outputs 0 1 Outputs 1 In input mode: When the P6 register is read, the pin levels at that time are read. Writing to P6 writes the values to that register. This does not affect the input pins. In output mode: When the P6 register is read, the P6 register's values are read. Writing to P6 writes the values to that register, and those values are immediately output. Port 6 includes the following alternate functions. Table 14-7. Port 6 Alternate Function Pins Pin Name Port 6 Alternate Function P60 A16 P61 A17 P62 A18 P63 A19 P64 A20 P65 A21 I/O I/O PULLNote No Remark - Note Software pull-up function User's Manual U13850EJ6V0UD 495 CHAPTER 14 PORT FUNCTION (1) Function of P6 pins Port 6 is a 6-bit I/O port for which I/O settings can be controlled in 1-bit units. I/O settings are controlled via the port 6 mode register (PM6). In output mode, the values set to each bit are output to the port 6 register (P6). When using this port in input mode, the pin statuses can be read by reading the P6 register. Also, the P6 register (output latch) values can be read by reading the P6 register while in output mode. A software pull-up function is not implemented. When using the alternate-function A16 to A21 pins, set the pin functions via the memory expansion register (MM). This does not affect the PM6 register. When a reset is input, the settings are initialized to input mode. (2) Control register (a) Port 6 mode register (PM6) PM6 can be read/written in 8-bit or 1-bit units. After reset: PM6 3FH R/W Address: FFFFF02CH 7 6 5 4 3 2 1 0 0 0 PM65 PM64 PM63 PM62 PM61 PM60 PM6n 496 Control of I/O mode (n = 0 to 5) 0 Output mode 1 Input mode User's Manual U13850EJ6V0UD CHAPTER 14 PORT FUNCTION (3) Block diagram (Port 6) Figure 14-9. Block Diagram P60 to P65 RD Internal bus Selector WRPORT Output latch (P6n) WRPM P6n/Ax PM6 PM6n Remarks 1. PM6: Port 6 mode register RD: Port 6 read signal WR: Port 6 write signal 2. n = 0 to 5 x = 16 to 21 User's Manual U13850EJ6V0UD 497 CHAPTER 14 PORT FUNCTION 14.2.7 Ports 7 and 8 Port 7 is an 8-bit input port and port 8 is a 4-bit input port. Both ports are read-only and are accessible in 8-bit or 1-bit units. After reset: Undefined P7 R Address: FFFFF00EH 7 6 5 4 3 2 1 0 P77 P76 P75 P74 P73 P72 P71 P70 P7n Pin level (n = 0 to 7) 0/1 After reset: Undefined P8 Read pin level of bit n R Address: FFFFF010H 7 6 5 4 3 2 1 0 0 0 0 0 P83 P82 P81 P80 P8n 0/1 Pin level (n = 0 to 3) Read pin level of bit n Ports 7 and 8 include the following alternate functions. Table 14-8. Alternate Function Pins of Ports 7 and 8 Pin Name Port 7 Port 8 Alternate Function P70 ANI0 P71 ANI1 P72 ANI2 P73 ANI3 P74 ANI4 P75 ANI5 P76 ANI6 P77 ANI7 P80 ANI8 P81 ANI9 P82 ANI10 P83 ANI11 I/O PULLNote Input No - Input No - Note Software pull-up function 498 Remark User's Manual U13850EJ6V0UD CHAPTER 14 PORT FUNCTION (1) Functions of P7 and P8 pins Port 7 is an 8-bit input-only port and port 8 is a 4-bit input-only port. The pin statuses can be read by reading the port 7 and 8 registers (P7 and P8). Data cannot be written to P7 or P8. A software pull-up function is not implemented. Values read from pins specified as analog inputs are undefined values. Do not read values from P7 or P8 during A/D conversion. (2) Block diagram (Ports 7 and 8) Figure 14-10. Block Diagram of P70 to P77 and P80 to P83 Internal bus RD Remarks 1. RD: Pmn/ANIx Port 7, port 8 read signals 2. m = 7, 8 n = 0 to 7 (m = 7), 0 to 3 (m = 8) x = 0 to 7 (m = 7), 8 to 11 (m = 8) User's Manual U13850EJ6V0UD 499 CHAPTER 14 PORT FUNCTION 14.2.8 Port 9 Port 9 is a 7-bit I/O port for which I/O settings can be controlled in 1-bit units. After reset: 00H R/W P9 Address: FFFFF012H 7 6 5 4 3 2 1 0 0 P96 P95 P94 P93 P92 P91 P90 P9n Remark Control of output data (in output mode) (n = 0 to 6) 0 Output 0 1 Output 1 In input mode: When the P9 register is read, the pin levels at that time are read. Writing to P9 writes the values to that register. This does not affect the input pins. In output mode: When the P9 register is read, the P9 register's values are read. Writing to P9 writes the values to that register, and those values are immediately output. Port 9 includes the following alternate functions. Table 14-9. Port 9 Alternate Function Pins Pin Name Port 9 Alternate Function P90 LBEN/WRL P91 UBEN P92 R/W/WRH P93 DSTB/RD P94 ASTB P95 HLDAK P96 HLDRQ I/O I/O PULLNote No Note Software pull-up function 500 User's Manual U13850EJ6V0UD Remark - CHAPTER 14 PORT FUNCTION (1) Function of P9 pins Port 9 is a 7-bit I/O port for which I/O settings can be controlled in 1-bit units. I/O settings are controlled via the port 9 mode register (PM9). In output mode, the values set to each bit are output to the port 9 register (P9). When using this port in input mode, the pin statuses can be read by reading the P9 register. Also, the P9 register (output latch) values can be read by reading the P9 register while in output mode. A software pull-up function is not implemented. When using the P9 for control signals in expansion mode, set the pin functions via the memory expansion mode register (MM). When a reset is input, the settings are initialized to input mode. Caution When using port 9 as an I/O port, set the BIC bit of the system control register (SYC) to 0. After the system is reset, the BIC bit is 0. (2) Control register (a) Port 9 mode register (PM9) PM9 can be read/written in 1-bit or 8-bit units. After reset: PM9 7FH R/W Address: FFFFF032H 7 6 5 4 3 2 1 0 0 PM96 PM95 PM94 PM93 PM92 PM91 PM90 PM9n Control of I/O mode (n = 0 to 6) 0 Output mode 1 Input mode User's Manual U13850EJ6V0UD 501 CHAPTER 14 PORT FUNCTION (3) Block diagram (Port 9) Figure 14-11. Block Diagram of P90 to P96 RD Internal bus Selector P90/LBEN/WRL P91/UBEN P92/R/W/WRH P93/DSTB/RD P94/ASTB P95/HLDAK P96/HLDRQ WRPORT Output latch (P9n) WRPM PM9 PM9n Remarks 1. PM9: Port 9 mode register RD: Port 9 read signal WR: Port 9 write signal 2. n = 0 to 6 502 User's Manual U13850EJ6V0UD CHAPTER 14 PORT FUNCTION 14.2.9 Port 10 Port 10 is an 8-bit I/O port for which I/O settings can be controlled in 1-bit units. A pull-up resistor can be connected in 1-bit units (software pull-up function). The pins in this port are selectable as normal outputs or N-ch open-drain outputs. When using P100 to P107 as KR0 to KR7 pins, noise is eliminated by the analog noise eliminator. After reset: P10 00H R/W Address: FFFFF014H 7 6 5 4 3 2 1 0 P107 P106 P105 P104 P103 P102 P101 P100 P10n Remark Control of output data (in output mode) (n = 0 to 7) 0 Output 0 1 Output 1 In input mode: When the P10 register is read, the pin levels at that time are read. Writing to P10 writes the values to that register. This does not affect the input pins. In output mode: When the P10 register is read, the P10 register's values are read. Writing to P10 writes the values to that register, and those values are immediately output. Port 10 includes the following alternate functions. IERX and IETX pins are valid only in the V850/SB2. Table 14-10. Port 10 Alternate Function Pins Pin Name Port 10 Alternate Function P100 RTP0/A5/KR0 P101 RTP1/A6/KR1 P102 RTP2/A7/KR2 P103 RTP3/A8/KR3 P104 RTP4/A9/KR4/IERX P105 RTP5/A10/KR5/IETX P106 RTP6/A11/KR6 P107 RTP7/A12/KR7 I/O I/O PULLNote Yes Remark Selectable as N-ch open-drain outputs Analog noise elimination Note Software pull-up function User's Manual U13850EJ6V0UD 503 CHAPTER 14 PORT FUNCTION (1) Function of P10 pins Port 10 is an 8-bit I/O port for which I/O settings can be controlled in 1-bit units. I/O settings are controlled via the port 10 mode register (PM10). In output mode, the values set to each bit are output to the port 10 register (P10). The port 10 function register (PF10) can be used to specify whether outputs are normal outputs or N-ch open-drain outputs. When using this port in input mode, the pin statuses can be read by reading the P10 register. Also, the P10 register (output latch) values can be read by reading the P10 register while in output mode. A pull-up resistor can be connected in 1-bit units when specified via pull-up resistor option register 10 (PU10). When using the alternate-function A5 to A12 pins, see the pin functions via the memory address output mode register (MAM). At this time, be sure to set P10 and PM10 to 0. When used as the KR0 to KR7 pins, noise is eliminated by the analog noise eliminator. When using alternate-function pins as outputs, the ORed result of the port output and the alternate-function pin is output from the pins. When a reset is input, the settings are initialized to input mode. Caution When using port 10 as a real-time output port, set in accordance with 13. 5 Usage. (2) Control register (a) Port 10 mode register (PM10) PM10 can be read/written in 1-bit or 8-bit units. After reset: PM10 FFH R/W Address: FFFFF034H 7 6 5 4 3 2 1 0 PM107 PM106 PM105 PM104 PM103 PM102 PM101 PM100 PM10n Control of I/O mode (n = 0 to 7) 0 Output mode 1 Input mode (b) Pull-up resistor option register 10 (PU10) PU10 can be read/written in 8-bit or 1-bit units. After reset: PU10 00H R/W Address: FFFFF094H 7 6 5 4 3 2 1 0 PU107 PU106 PU105 PU104 PU103 PU102 PU101 PU100 PU10n 504 Control of on-chip pull-up resistor connection (n = 0 to 7) 0 Do not connect 1 Connect User's Manual U13850EJ6V0UD CHAPTER 14 PORT FUNCTION (c) Port 10 function register (PF10) PF10 can be read/written in 8-bit or 1-bit units. After reset: PF10 00H R/W Address: FFFFF0B4H 7 6 5 4 3 2 1 0 PF107 PF106 PF105 PF104 PF103 PF102 PF101 PF100 PF10n Control of normal output/N-ch open-drain output (n = 0 to 7) 0 Normal output 1 N-ch open-drain output User's Manual U13850EJ6V0UD 505 CHAPTER 14 PORT FUNCTION (3) Block diagram (Port 10) Figure 14-12. Block Diagram of P100 to P107 VDD WRPU PU10 P-ch PU10n RD Internal bus Selector WRPF PF10 VDD PF10n WRPORT Output latch (P10n) WRPM P-ch PM10 N-ch PM10n Alternate function Note The IERX, IETX pins apply only to the V850/SB2. Remarks 1. PU10: Pull-up resistor option register 10 RF10: Port 10 function register PM10: Port 10 mode register RD: Port 10 read signal WR: Port 10 write signal 2. n = 0 to 7 506 User's Manual U13850EJ6V0UD P100/RTP0/A5/KR0 P101/RTP1/A6/KR1 P102/RTP2/A7/KR2 P103/RTP3/A8/KR3 P104/RTP4/A9/KR4/IERXNote P105/RTP5/A10/KR5/IETXNote P106/RTP6/A11/KR6 P107/RTP7/A12/KR7 CHAPTER 14 PORT FUNCTION 14.2.10 Port 11 Port 11 is a 4-bit port. A pull-up resistor can be connected to bits 0 to 3 in 1-bit units (software pull-up function). P11 can be read/written in 8-bit or 1-bit units. The on/off of wait function can be switched with a port alternate-function control register (PAC). Caution When using the wait function, set BCDD to the same potential as EVDD. After reset: 00H P11 R/W Address: FFFFF016H 7 6 5 4 3 2 1 0 0 0 0 Undefined P113 P112 P111 P110 P11n Remark Control of output data (in output mode) (n = 0 to 3) 0 Output 0 1 Output 1 In input mode: When the P11 register is read, the pin levels at that time are read. Writing to P11 writes the values to that register. This does not affect the input pins. In output mode: When the P11 register is read, the P11 register's values are read. Writing to P11 writes the values to that register, and those values are immediately output. Port 11 includes the following alternate functions. Table 14-11. Port 11 Alternate Function Pins Pin Name Port 11 Alternate Function P110 A1/WAIT P111 A2 P112 A3 P113 A4 I/O I/O PULLNote Yes Remark - Note Software pull-up function User's Manual U13850EJ6V0UD 507 CHAPTER 14 PORT FUNCTION (1) Function of P11 pins Port 11 is a 4-bit (total) port for which I/O settings can be controlled in 1-bit units. In output mode, the values set to each bit (bit 0 to bit 3) are output to the port register (P11). When using this port in input mode, the pin statuses can be read by reading the P11 register. Also, the P11 register (output latch) values can be read by reading the P11 register while in output mode (bit 0 to bit 3 only). A pull-up resistor can be connected in 1-bit units for P110 to P113 when specified via pull-up resistor option register 11 (PU11). The on/off of wait function can be switched with a port-alternate function control register (PAC). When using the alternate-function A1 to A4 pins, set the pin functions via the memory address output mode register (MAM). At this time, be sure to clear P11 and PM11 to 0. When a reset is input, the settings are initialized to input mode. Caution A wait function generated by the WAIT pin cannot be used while a separate bus is being used. However, a programmable wait is possible. (2) Control register (a) Port 11 mode register (PM11) PM11 can be read/written in 1-bit or 8-bit units. After reset: PM11 1FH R/W Address: FFFFF036H 7 6 5 4 3 2 1 0 0 0 0 1 PM113 PM112 PM111 PM110 PM11n 508 Control of I/O mode (n = 0 to 3) 0 Output mode 1 Input mode User's Manual U13850EJ6V0UD CHAPTER 14 PORT FUNCTION (b) Pull-up resistor option register 11 (PU11) PU11 can be read/written in 8-bit or 1-bit units. After reset: 00H PU11 R/W Address: FFFFF096H 7 6 5 4 3 2 1 0 0 0 0 0 PU113 PU112 PU111 PU110 PU11n Control of on-chip pull-up resistor connection (n = 0 to 3) 0 Do not connect 1 Connect (c) Port alternate-function control register (PAC) PAC can be read/written in 8-bit or 1-bit units. After reset: PAC 00H R/W Address: FFFFF040H 7 6 5 4 3 2 1 <0> 0 0 0 0 0 0 0 WAC P120 Control of output data (in output mode) 0 Wait function off 1 Wait function on User's Manual U13850EJ6V0UD 509 CHAPTER 14 PORT FUNCTION (3) Block diagram (Port 11) Figure 14-13. Block Diagram of P110 to P113 VDD WRPU PU11 PU11n P-ch RD Internal bus Selector WRPORT P110/A1/WAIT P111/A2 P112/A3 P113/A4 Output latch (P11n) WRPM PM11 PM11n Remarks 1. PU11: Pull-up resistor option register 11 PM11: Port 11 mode register RD: Port 11 read signal WR: Port 11 write signal 2. n = 0 to 3 510 User's Manual U13850EJ6V0UD CHAPTER 14 PORT FUNCTION 14.3 Setting When Port Pin Is Used as Alternate Function When a port pin is used as an alternate function, set the port n mode register (PM0 to PM6 and PM9 to PM11) and output latch as shown in Table 14-12 below. Table 14-12. Setting When Port Pin Is Used as Alternate Function (1/4) Pin Name Alternate Function Function Name I/O PMnx Bit of PMn Register Pnx Bit of Pn Register Other Bits (Register) P00 NMI Input PM00 = 1 Setting not needed P01 INTP0 Input PM01 = 1 Setting not needed P02 INTP1 Input PM02 = 1 Setting not needed for P00 for P01 for P02 P03 INTP2 Input PM03 = 1 Setting not needed for P03 P04 INTP3 Input PM04 = 1 Setting not needed for P04 P05 INTP4 ADTRG Input P06 INTP5 Input RTPTRG Input INTP6 Input P07 Input PM05 = 1 Setting not needed PM06 = 1 Setting not needed for P05 for P06 PM07 = 1 Setting not needed for P07 P10 SI0 Input PM10 = 1 Setting not needed SDA0Note I/O PM10 = 0 P10 = 0 P11 SO0 Output PM11 = 0 P11 = 0 P12 SCK0 Input PM12 = 1 Setting not needed for P10 PF10 = 1 for P12 Output P13 P14 P15 SCL0Note I/O SI1 Input RXD0 Input SO1 Output TXD0 Output SCK1 Input PM12 = 0 P12 = 0 PF12 = 1 PM13 = 1 Setting not needed for P13 PM14 = 0 P14 = 0 PM15 = 1 Setting not needed for P15 ASCK0 Output PM15 = 0 P12 = 0 Input PM15 = 1 Setting not needed for P15 2 Note Available only in the Y versions (products with on-chip I C) User's Manual U13850EJ6V0UD 511 CHAPTER 14 PORT FUNCTION Table 14-12. Setting When Port Pin Is Used as Alternate Function (2/4) Pin Name Alternate Function Function Name P20 SI2 I/O Input PMnx Bit of PMn Register PM20 = 1 Pnx Bit of Pn Register Other Bits (Register) Setting not needed for P20 SDA1Note I/O PM20 = 0 P20 = 0 P21 SO2 Output PM21 = 0 P21 = 0 P22 SCK2 Input PM22 = 1 Setting not needed Output PM22 = 0 PF20 = 1 for P22 Note SCL1 I/O SI3 Input RXD1 Input P24 SO3 Output TXD1 Output P25 SCK3 Input P23 P22 = 0 PF22 = 1 PM23 = 1 Setting not needed for P23 PM24 = 0 P24 = 0 PM25 = 1 Setting not needed for P25 ASCK1 Output PM25 = 0 P25 = 0 Input PM25 = 1 Setting not needed for P25 P26 TI2 Input PM26 = 1 Setting not needed for P26 P27 TO2 Output PM26 = 0 P26 = 0 TI3 Input PM27 = 1 Setting not needed for P27 TO3 Output PM27 = 0 P27 = 0 P30 TI00 Input PM30 = 1 Setting not needed P31 TI01 Input PM31 = 1 Setting not needed for P30 for P31 P32 P33 TI10 Input SI4 Input PM32 = 1 Setting not needed TI11 Input PM33 = 1 SO4 Output PM33 = 0 P33 = 0 TO0 Output PM34 = 0 P34 = 0 for P32 Setting not needed for P33 P34 A13 Output SCK4 Input PM34 = 1 Setting not needed for P34 Output PM34 = 0 P34 = 0 2 Note Available only in the Y versions (products with on-chip I C) 512 Refer to 3.4.6 (2) (MAM) User's Manual U13850EJ6V0UD CHAPTER 14 PORT FUNCTION Table 14-12. Setting When Port Pin Is Used as Alternate Function (3/4) Pin Name Alternate Function Function Name P35 P36 TO1 I/O Output A14 Output TI4 Input PMnx Bit of PMn Register PM35 = 0 Pnx Bit of Pn Register P35 = 0 Other Bits (Register) Refer to 3.4.6 (2) (MAM) PM36 = 1 Setting not needed for P36 P37 TO4 Output A15 Output TI5 Input PM36 = 0 P36 = 0 Refer to 3.4.6 (2) (MAM) PM37 = 1 Setting not needed for P37 P40 to P47 TO5 Output AD0 to AD7 I/O PM37 = 0 P37 = 0 Setting not needed Setting not needed for PM40 to PM47 for P40 to P47 P50 to P57 AD8 to AD15 I/O Setting not needed Setting not needed for PM50 to PM57 for P50 to P57 P60 to P65 A16 to A21 Output Setting not needed Setting not needed for PM60 to PM65 for P60 to P65 P70 to P77 ANI0 to ANI7 Input None Setting not needed Refer to 3.4.6 (1) (MM) Refer to 3.4.6 (1) (MM) Refer to 3.4.6 (1) (MM) for P70 to P77 P80 to P83 ANI8 to ANI11 Input None Setting not needed for P80 to P83 P90 LBEN Output Setting not needed Setting not needed for P90 Refer to 3.4.6 (1) (MM) WRL Output for PM90 P91 UBEN Output Setting not needed Setting not needed for PM91 for P91 P92 R/W Output Setting not needed Setting not needed WRH Output for PM92 for P92 DSTB Output Setting not needed P93 = 1 Refer to 3.4.6 (1) (MM) P94 = 1 Refer to 3.4.6 (1) (MM) Refer to 3.4.6 (1) (MM) P93 RD Output for PM93 P94 ASTB Output Setting not needed P95 HLDAK Output Setting not needed Setting not needed for PM95 for P95 = 1 Setting not needed Setting not needed for PM96 for P96 = 1 Refer to 3.4.6 (1) (MM) Refer to 3.4.6 (1) (MM) for PM94 P96 HLDRQ Input User's Manual U13850EJ6V0UD Refer to 3.4.6 (1) (MM) 513 CHAPTER 14 PORT FUNCTION Table 14-12. Setting When Port Pin Is Used as Alternate Function (4/4) Pin Name Function Name P100 to P103 PMnx Bit of PMn Register Alternate Function I/O RTP0 to RTP3 Output A5 to A8 Output KR0 to KR3 Input PM100 to PM103 = 0 Pnx Bit of Pn Register P100 to P103 = 0 Other Bits (Register) - Refer to 3.4.6 (2) (MAM) PM100 to PM103 = 1 Setting not needed - for P100 to P103 P104 RTP4 A9 Output KR4 Input IERX P105 Output Note - PM104 = 0 P104 = 0 PM104 = 1 Setting not needed - for P104 - PM105 = 0 P105 = 0 - Setting not needed Refer to 3.4.6 (2) (MAM) Input RTP5 Output A10 Output KR5 Input PM105 = 1 IETX Note Output PM105 = 0 P105 = 0 - RTP6, RTP7 Output PM106, PM107 = 0 P106, P107 = 0 - A11, A12 Output KR6, KR7 Input PM106, PM107 = 1 Setting not needed Refer to 3.4.6 (2) (MAM) - for P105 P106, P107 Refer to 3.4.6 (2) (MAM) - for P106 and P107 P110 A1 Output PM110 = 0 P110 = 0 Refer to 3.4.6 (2) (MAM) WAIT Input PM110 = 1 Setting not needed WAC = 1 (PAC) for P110 P111 to P113 A2 to A4 Output PM111 to PM113 = 0 P111 to P113 = 0 Refer to 3.4.6 (2) (MAM) Note Only in the V850/SB2. Caution When changing the output level of port 0 by setting the port function output mode of port 0, the interrupt request flag will be set because port 0 also has an alternate function as an external interrupt request input. Therefore, be sure to set the corresponding interrupt mask flag to 1 before using the output mode. Remark PMnx bit of PMn register and Pnx bit of Pn register n: 0 (x = 0 to 7) 514 n: 1 (x = 0 to 5) n: 2 (x = 0 to 7) n: 3 (x = 0 to 7) n: 4 (x = 0 to 7) n: 5 (x = 0 to 7) n: 6 (x = 0 to 5) n: 7 (x = 0 to 7) n: 8 (x = 0 to 3) n: 9 (x = 0 to 6) n: 10 (x = 0 to 7) n: 11 (x = 0 to 3) User's Manual U13850EJ6V0UD CHAPTER 14 PORT FUNCTION 14.4 Port Function Operation Port operation differs according to the input/output mode setting, as follows. 14.4.1 Write operation to I/O port (1) In output mode A value is written to the output latch using a transfer instruction, and the contents of the output latch are output from the pin. Once data has been written to the output latch, it is held until the next data is written to the output latch. (2) In input mode A value is written to the output latch using a transfer instruction. However, since the output buffer is OFF, the pin status does not change. Once data has been written to the output latch, it is held until the next data is written to the output latch. Caution A bit manipulation instruction (CLR1, SET1, NOT1) manipulates 1 bit but accesses a port in 8-bit units. If this instruction is executed to manipulate a port with a mixture of input and output bits, the contents of the output latch of a pin set in the input mode, in addition to the bit to be manipulated, are overwritten to the current input pin status and become undefined. 14.4.2 Read operation from I/O port (1) In output mode The output latch contents are read using a transfer instruction. The output latch contents remain unchanged. (2) In input mode The pin status is read using a transfer instruction. The output latch contents remain unchanged. User's Manual U13850EJ6V0UD 515 CHAPTER 15 RESET FUNCTION 15.1 General When a low level is input to the RESET pin, a system reset is performed and the various on-chip hardware devices are reset to their initial settings. In addition, oscillation of the main clock is stopped during the reset period, although oscillation of the subclock continues. When the input at the RESET pin changes from low level to high level, the reset status is released and the CPU resumes program execution. The contents of the various registers should be initialized within the program as necessary. An on-chip noise eliminator uses analog delay to prevent noise-related malfunction at the RESET pin. 15.2 Pin Operations During the system reset period, almost all pins are set to high impedance (all pins except for RESET, X2, XT2, REGC, AVREF, VDD, VSS, AVDD, AVSS, BVDD, BVSS, EVDD, EVSS, and VPP/IC). Accordingly, if connected to an external memory device, be sure to attach a pull-up (or pull-down) resistor for each pin. If such a resistor is not attached, these pins will be set to high impedance, which could damage the data in memory devices. Likewise, make sure the pins are handled so as to prevent a similar effect at the signal outputs of on-chip peripheral I/O functions and output ports. Figure 15-1. System Reset Timing Hi-Z X1 Oscillation stabilization time RESET Analog delay Analog delay Analog delay Internal system reset signal Eliminated as noise Reset is acknowledged Reset is released 20.2 ms (@ 20 MHz operation) 516 User's Manual U13850EJ6V0UD CHAPTER 16 REGULATOR 16.1 Outline The V850/SB1 and V850/SB2 incorporate a regulator to realize a 5 V single power supply, low power consumption, and to reduce noise. This regulator supplies a voltage obtained by stepping down the VDD power supply voltage to the oscillation blocks and on-chip logic circuits (excluding the A/D converter and output buffers). The regulator output voltage is set to 3.3 V (V850/SB1, H versions of V850/SB2) or 3.0 V (A and B versions of V850/SB2). Refer to 2.4 I/O Circuit Types, I/O Buffer Power Supplies and Connection of Unused Pins for the power supply corresponding to each pin. Figure 16-1. Regulator EVDD-system I/O buffer 3.0 V to 5.5 V AVDD EVDD A/D converter On-chip digital circuit 3.3 V: V850/SB1, H versions of V850/SB2 3.0 V: A, B versions of V850/SB2 4.5 V to 5.5 V Flash memory Main/Sub oscillators BVDD VDD VPP Regulator REGC Bidirectional level shifter 3.0 V to 5.5 V BVDD-system I/O buffer 16.2 Operation The regulators of the V850/SB1 and V850/SB2 operate in every mode (STOP, IDLE, HALT). For stabilization of regulator outputs, connect an electrolytic capacitor of about 1 F to the REGC pin. User's Manual U13850EJ6V0UD 517 CHAPTER 17 ROM CORRECTION FUNCTION 17.1 General The ROM correction function provided in the V850/SB1 and V850/SB2 is a function that replaces part of a program in the mask ROM with a program in the internal RAM. First, the instruction of the address where the program replacement should start is replaced with the JMP r0 instruction and the program is instructed to jump to 00000000H. The correction request register (CORRQ) is then checked. At this time, if the CORRQn flag is set to 1, program control shifts to the internal RAM after jumping to the internal ROM area by an instruction such as a jump instruction. Instruction bugs found in the mask ROM can be avoided, and program flow can be changed by using the ROM correction function. Up to four correction addresses can be specified. Cautions 1. The ROM correction function cannot be used for the data in the internal ROM; it can only be used for instruction codes. If ROM correction is carried out on data, that data will replace the instruction code of the JMP r0 instruction. 2. ROM correction for the instructions that access the registers CORCN, CORRQ, or CORAD0 to CORAD3 is prohibited. Figure 17-1. Block Diagram of ROM Correction Instruction address bus Correction address register n (CORADn) ROM (1 MB area) JMP r0 instruction generation Comparator Correction control register (CORCNn bit) S Q Instruction replacement R 0 clear instruction Remark n = 0 to 3 518 Correction request register (CORRQn bit) User's Manual U13850EJ6V0UD Instruction data bus CHAPTER 17 ROM CORRECTION FUNCTION 17.2 ROM Correction Peripheral I/O Registers (1) Correction control register (CORCN) CORCN controls whether or not the instruction of the correction address is replaced with the JMP r0 instruction when the correction address matches the fetch address (n = 0 to 3). Whether match detection by a comparator is enabled or disabled can be set for each channel. CORCN can be set by a 1-bit or 8-bit memory manipulation instruction. After reset: CORCN 00H R/W Address: FFFFF36CH 7 6 5 4 <3> <2> <1> <0> 0 0 0 0 COREN3 COREN2 COREN1 COREN0 CORENn CORADn register and fetch address match detection control 0 Match detection disabled (not detected) 1 Match detection enabled (detected) Remark n = 0 to 3 User's Manual U13850EJ6V0UD 519 CHAPTER 17 ROM CORRECTION FUNCTION (2) Correction request register (CORRQ) CORRQ saves the channel in which ROM correction occurred. The JMP r0 instruction makes the program jump to 00000000H after the correction address matches the fetch address. At this time, the program can judge the following cases by reading CORRQ. * Reset input: CORRQ = 00H * ROM correction generation: CORRQn bit = 1 (n = 0 to 3) * Branch to 00000000H by user program: CORRQ = 00H After reset: CORRQ 00H R/W Address: FFFFF36EH 7 6 5 4 <3> <2> <1> <0> 0 0 0 0 CORRQ3 CORRQ2 CORRQ1 CORRQ0 CORRQn 0 No ROM correction request occurred. 1 ROM correction request occurred. Remark 520 Channel n ROM correction request flag n = 0 to 3 User's Manual U13850EJ6V0UD CHAPTER 17 ROM CORRECTION FUNCTION (3) Correction address registers 0 to 3 (CORAD0 to CORAD3) CORADn sets the start address of an instruction to be corrected (correction address) in the ROM. Up to four points of the program can be corrected at once since the V850/SB1 and V850/SB2 have four correction address registers (CORADn) (n = 0 to 3). Since the ROM capacity varies depending on the product, set the correction address within following ranges. PD703031A, 703031AY, 703031B, 703031BY, 703034A, 703034AY, 703034B, 703034BY (128 KB): 00000000H to 0001FFFEH PD703033A, 703033AY, 703033B, 703033BY, 703035A, 703035AY, 703035B, 703035BY (256 KB): 00000000H to 0003FFFEH PD703030B, 703030BY, 703036H, 703036HY (384 KB): 00000000H to 0005FFFEH PD703032A, 703032AY, 703032B, 703032BY, 703037A, 703037AY, 703037H, 703037HY (512 KB): 00000000H to 0007FFFEH Bits 0 and 20 to 31 should be fixed to 0. After reset: 00000000H R/W 31 Address: CORAD0: FFFFF370H CORAD2: FFFFF378H CORAD1: FFFFF374H CORAD3: FFFFF37CH 20 19 1 0 CORADn Fixed to 0 Correction address 0 (n = 0 to 3) User's Manual U13850EJ6V0UD 521 CHAPTER 17 ROM CORRECTION FUNCTION Figure 17-2. ROM Correction Operation and Program Flow START (reset vector) CORRQn = 0? No Yes Microcontroller initialization Clears CORRQn flag. JMP channel n correct code address Data for ROM correction setting is loaded The address of the internal RAM that from an external memory into the internal stores the correction code of channel n RAM to initialize ROM correction function. should be preset before the instruction If there is a correction code, it is loaded in that makes the program jump to this the internal RAM. address is stored in the internal ROM. Executes correction program code Executes internal ROM program Jumps to internal ROM Correction address? No Yes CORENn = 1? No Yes CORRQn flag set JMP r0 : Executed by a program stored in the internal ROM : Executed by a program stored in the internal RAM : Executed by the ROM correction function Caution Check the ROM correction generation from the vector table with a high interrupt level when executing ROM correction during a vector interrupt routine. If an interrupt conflicts with ROM correction, processing is branched to an interrupt vector, where, if ROM correction is being re-executed, CORRQn is set (1) again and multiple CORRQn flags are set (1). The channel for which ROM correction is to be executed is determined by the interrupt level. Remark 522 n = 0 to 3 User's Manual U13850EJ6V0UD CHAPTER 18 FLASH MEMORY The following products are the flash memory versions of the V850/SB1 and V850/SB2. Caution The flash memory versions and mask ROM versions differ in noise immunity and noise radiation. If replacing a flash memory version with a mask ROM version when changing from experimental production to mass production, make a thorough evaluation by using the CS model (not ES model) of the mask ROM version. (1) V850/SB1 PD70F3033A, 70F3033AY, 70F3033B, 70F3033BY: 256 KB flash memory versions PD70F3030B, 70F3030BY: 384 KB flash memory versions PD70F3032A, 70F3032AY, 70F3032B, 70F3032BY: 512 KB flash memory versions (2) V850/SB2 PD70F3035A, 70F3035AY, 70F3035B, 70F3035BY: 256 KB flash memory versions PD70F3036H, 70F3036HY: 384 KB flash memory versions PD70F3037A, 70F3037AY, 70F3037H,70F3037HY: 512 KB flash memory versions In the instruction fetch to this flash memory, 4 bytes can be accessed by a single clock, the same as in the mask ROM version. Writing to flash memory can be performed with the memory mounted on the target system (on board). A dedicated flash programmer is connected to the target system to perform writing. The following can be considered as the development environment and applications using flash memory. * Software can be altered after the V850/SB1 or V850/SB2 is solder-mounted on the target system. * Small scale production of various models is made easier by differentiating software. * Data adjustment in starting mass production is made easier. 18.1 Features * 4-byte/1-clock access (in instruction fetch access) * All area one-shot erase/area unit erase * Communication via serial interface with the dedicated flash programmer * Erase/write voltage: VPP = 7.8 V * On-board programming * Flash memory programming in area (128 KB) units by self-writing User's Manual U13850EJ6V0UD 523 CHAPTER 18 FLASH MEMORY 18.1.1 Erase unit The erase unit differs depending on the product. (1) V850/SB1 (PD70F3033A, 70F3033AY, 70F3033B, 70F3033BY), V850/SB2 (PD70F3035A, 70F3035AY, 70F3035B, 70F3035BY) The erase units for 256 KB flash memory versions are shown below. (a) All area one-shot erase The area of xx000000H to xx03FFFFH can be erased in one shot. (b) Area erase Erasure can be performed in area units (there are two 128 KB unit areas). Area 0: The area of xx000000H to xx01FFFFH (128 KB) is erased Area 1: The area of xx020000H to xx03FFFFH (128 KB) is erased (2) V850/SB1 (PD70F3033B, 70F3033BY), V850/SB2 (PD70F3036H, 70F3036HY) The erase units for 384 KB flash memory versions are shown below. (a) All area one-shot erase The area of xx000000H to xx05FFFFH can be erased in one shot. (b) Area erase Erasure can be performed in area units (there are three 128 KB unit areas). Area 0: The area of xx000000H to xx01FFFFH (128 KB) is erased Area 1: The area of xx020000H to xx03FFFFH (128 KB) is erased Area 2: The area of xx040000H to xx05FFFFH (128 KB) is erased (3) V850/SB1 (PD70F3032A, 70F3032AY, 70F3032B, 70F3032BY), V850/SB2 (PD70F3037A, 70F3037AY, 70F3037H, 70F3037HY) The erase units for 512 KB flash memory versions are shown below. (a) All area one-shot erase The area of xx000000H to xx07FFFFH can be erased in one shot. (b) Area erase Erasure can be performed in area units (there are four 128 KB unit areas). Area 0: The area of xx000000H to xx01FFFFH (128 KB) is erased Area 1: The area of xx020000H to xx03FFFFH (128 KB) is erased Area 2: The area of xx040000H to xx05FFFFH (128 KB) is erased Area 3: The area of xx060000H to xx07FFFFH (128 KB) is erased 18.1.2 Write/read time The write/read time is shown below. Write time: 50 s/byte Read time: 50 ns (cycle time) 524 User's Manual U13850EJ6V0UD CHAPTER 18 FLASH MEMORY 18.2 Writing with Flash Programmer Writing can be performed either on-board or off-board with the dedicated flash programmer. (1) On-board programming The contents of the flash memory are rewritten after the V850/SB1 or V850/SB2 is mounted on the target system. Mount connectors, etc., on the target system to connect the dedicated flash programmer. (2) Off-board programming Writing to a flash memory are performed by the dedicated program adapter (FA Series), etc., before mounting the V850/SB1 or V850/SB2 on the target system. Remark FA Series is a product of Naito Densei Machida Mfg. Co., Ltd. User's Manual U13850EJ6V0UD 525 CHAPTER 18 FLASH MEMORY D N G DD V Figure 18-1. Wiring Example of V850/SB1 and V850/SB2 Flash Writing Adapter (FA-100GC-8EU) D VD ND G 72 71 56 55 PD70F3030B, PD70F3030BY, PD70F3033A, PD70F3033AY, PD70F3033B, PD70F3033BY, PD70F3035A, PD70F3035AY, PD70F3035B, PD70F3035BY, PD70F3036H, PD70F3036HY 86 38 37 36 35 34 Note 32 94 Connect to GND. 95 31 Connect to VDD. 96 99 6 7 18 D VD ND G 1 D N G DD V SI SO SCK X1 X2 /RESET VPP RESERVE/HS Note The V850/SB1 and V850/SB2 cannot be supplied with the clock from the CLK pin of the flash programmer (PG-FP3). Supply the clock by creating an oscillator on the flash writing adapter (broken-line portion). An example of the oscillator is shown below. REGC X1 X2 1 F Remarks 1. Handle the pins not described above in accordance with the recommended connection of unused pins (refer to 2.4 Pin I/O Circuit Types, I/O Buffer Power Supplies and Connection of Unused Pins). When connecting to VDD via a resistor, use of a resistor of 1 k to 10 k is recommended. 2. This adapter is for a 100-pin plastic LQFP (fine pitch) package. 3. This diagram shows the wiring when using CSI supporting handshake. 526 User's Manual U13850EJ6V0UD CHAPTER 18 FLASH MEMORY Table 18-1. Table for Wiring of V850/SB1 and V850/SB2 Flash Writing Adapter (FA-100GC-8EU) Flash Programmer (PG-FP3) Signal Name I/O When Using CSI0 + HS Pin Function Pin Name When Using CSI0 Pin No. Pin Name When Using UART0 Pin No. Pin Name Pin No. SI/RXD Input Receive signal P11/SO0 95 P11/SO0 95 P14/SO1/TXD0 97 SO/TXD Output Transmit signal P10/SI0/SDA0 94 P10/SI0/SDA0 94 P13/SO0/RXD0 98 SCK Output CLK - Transfer clock P12/SCK0/SCL0 96 P12/SCK0/SCL0 96 Unnecessary Unnecessary Unused Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Output Reset signal RESET 31 RESET 31 RESET 31 VPP Output Writing voltage IC/VPP 18 IC/VPP 18 IC/VPP 18 HS Input Handshake signal P15/SCK4/ASCK0 99 Unnecessary Unnecessary Unnecessary Unnecessary VDD 38 VDD 38 VDD 38 EVDD 6 EVDD 6 EVDD 6 BVDD 5 BVDD 5 BVDD 5 /RESET of CSI0 + HS communication VDD - VDD voltage generation/power supply monitoring GND - Ground AVDD 71 AVDD 71 AVDD 71 VSS 37 VSS 37 VSS 37 EVSS 7 EVSS 7 EVSS 7 BVSS 56 BVSS 56 BVSS 56 AVSS 72 AVSS 72 AVSS 72 P00/NMI 86 P00/NMI 86 P00/NMI 86 Note The V850/SB1 and V850/SB2 cannot be supplied with the clock from the CLK pin of the flash programmer (PG-FP3). Supply the clock by creating an oscillator on the flash writing adapter (broken-line portion). User's Manual U13850EJ6V0UD 527 CHAPTER 18 FLASH MEMORY D N G DD V Figure 18-2. Wiring Example of V850/SB1 and V850/SB2 Flash Writing Adapter (FA-100GF-3BA) D VD ND G 75 74 59 58 PD70F3030B, PD70F3030BY, PD70F3032A, PD70F3032AY, PD70F3032B, PD70F3032BY, PD70F3033A, PD70F3033AY, PD70F3033B, PD70F3033BY 89 PD70F3035A, PD70F3035AY, PD70F3035B, PD70F3035BY, PD70F3036H, PD70F3036HY PD70F3037A, PD70F3037AY, PD70F3037H, PD70F3037HY 41 40 39 38 37 Note 35 97 Connect to GND. 98 Connect to VDD. 34 99 2 9 10 21 D VD ND G 1 D N G DD V SI SO SCK X1 X2 /RESET VPP RESERVE/HS Note The V850/SB1 and V850/SB2 cannot be supplied with the clock from the CLK pin of the flash programmer (PG-FP3). Supply a clock by creating an oscillator on the flash writing adapter (broken-line portion). An example of the oscillator is shown below. REGC X1 X2 1 F Remarks 1. Handle the pins not described above in accordance with the recommended connection of unused pins (refer to 2.4 Pin I/O Circuit Types, I/O Buffer Power Supplies and Connection of Unused Pins). When connecting to VDD via a resistor, use of a resistor of 1 k to 10 k is recommended. 2. This adapter is for a 100-pin plastic QFP package. 3. This diagram shows the wiring when using CSI supporting handshake. 528 User's Manual U13850EJ6V0UD CHAPTER 18 FLASH MEMORY Table 18-2. Table for Wiring of V850/SB1 and V850/SB2 Flash Writing Adapter (FA-100GF-3BA) Flash Programmer (PG-FP3) Signal Name I/O When Using CSI0 + HS Pin Function Pin Name When Using CSI0 Pin No. Pin Name When Using UART0 Pin No. Pin Name Pin No. SI/RXD Input Receive signal P11/SO0 98 P11/SO0 98 P14/SO1/TXD0 100 SO/TXD Output Transmit signal P10/SI0/SDA0 97 P10/SI0/SDA0 97 P13/SO0/RXD0 1 SCK Output CLK - Transfer clock P12/SCK0/SCL0 99 P12/SCK0/SCL0 99 Unnecessary Unnecessary Unused Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Unnecessary Output Reset signal RESET 34 RESET 34 RESET 34 VPP Output Writing voltage IC/VPP 21 IC/VPP 21 IC/VPP 21 HS Input Handshake signal P15/SCK4/ASCK0 2 Unnecessary Unnecessary Unnecessary Unnecessary VDD 41 VDD 41 VDD 41 EVDD 9 EVDD 9 EVDD 9 BVDD 8 BVDD 8 BVDD 8 /RESET of CSI0 + HS communication VDD - VDD voltage generation/power supply monitoring GND - Ground AVDD 74 AVDD 74 AVDD 74 VSS 40 VSS 40 VSS 40 EVSS 10 EVSS 10 EVSS 10 BVSS 59 BVSS 59 BVSS 59 AVSS 75 AVSS 75 AVSS 75 P00/NMI 89 P00/NMI 89 P00/NMI 89 Note The V850/SB1 and V850/SB2 cannot be supplied with the clock from the CLK pin of the flash programmer (PG-FP3). Supply the clock by creating an oscillator on the flash writing adapter (broken-line portion). User's Manual U13850EJ6V0UD 529 CHAPTER 18 FLASH MEMORY 18.3 Programming Environment The following shows the environment required for writing programs to the flash memory of the V850/SB1 and V850/SB2. Figure 18-3. Environment Required for Writing Programs to Flash Memory VPP VDD VSS RS-232C RESET UART/CSI Host machine Dedicated flash programmer V850/SB1, V850/SB2 A host machine is required for controlling the dedicated flash programmer. UART0 or CSI0 is used for the interface between the dedicated flash programmer and the V850/SB1 or V850/SB2 to perform writing, erasing, etc. A dedicated program adapter (FA Series) required for off-board writing. 18.4 Communication Mode The communication between the dedicated flash programmer and the V850/SB1 or V850/SB2 is performed by serial communication using UART0 or CSI0 of the V850/SB1, V850/SB2 . (1) UART0 Transfer rate: 4800 to 76800 bps Figure 18-4. Communication with Dedicated Flash Programmer (UART0) VPP VDD GND RESET Dedicated flash programmer 530 VPP VDD VSS RESET RXD TXD0 TXD RXD0 User's Manual U13850EJ6V0UD V850/SB1, V850/SB2 CHAPTER 18 FLASH MEMORY (2) CSI0 Serial clock: Up to 1 MHz (MSB first) Figure 18-5. Communication with Dedicated Flash Programmer (CSI0) VPP VPP VDD VDD GND RESET Dedicated flash programmer VSS RESET SI SO0 SO SI0 SCK V850/SB1, V850/SB2 SCK0 (3) CSI0 + HS Serial clock: Up to 1 MHz (MSB first) Figure 18-6. Communication with Dedicated Flash Programmer (CSI0 + HS) VPP VDD GND RESET Dedicated flash programmer VPP VDD VSS RESET SI SO0 SO SI0 SCK HS V850/SB1, V850/SB2 SCK0 P15 The dedicated flash programmer outputs the transfer clock, and the V850/SB1 and V850/SB2 operate as slaves. When the PG-FP3 is used as the dedicated flash programmer, it generates the following signals to the V850/SB1 or V850/SB2 . For details, refer to the PG-FP3 User's Manual. User's Manual U13850EJ6V0UD 531 CHAPTER 18 FLASH MEMORY Table 18-3. Signal Generation of Dedicated Flash Programmer (PG-FP3) PG-FP3 Signal Name V850/SB1, V850/SB2 I/O Pin Function Pin Name VPP Output Writing voltage VPP VDD I/O VDD voltage generation/ voltage monitoring VDD Ground VSS Output Clock output to V850/SB1, V850/SB2 X1 RESET Output Reset signal RESET SI/RxD Input Receive signal SO0/TxD0 SO/TxD Output Transmit signal SI0/RxD0 SCK Output Transfer clock SCK0 HS Input Handshake signal of CSI0 + HS P15 - GND CLK Note Note Supply clocks on the target board. Remark : Always connected {: Does not need to be connected, if generated on the target board x: 532 Does not need to be connected User's Manual U13850EJ6V0UD Connection Handling CSI0 UART0 CSI0 + HS x x x x x x CHAPTER 18 FLASH MEMORY 18.5 Pin Connection When performing on-board writing, install a connector on the target system to connect to the dedicated flash programmer. Also, incorporate a function on-board to switch from the normal operation mode to the flash memory programming mode. When switched to the flash memory programming mode, all the pins not used for the flash memory programming become the same status as that immediately after reset. Therefore, all the ports enter the output high-impedance status, so that pin handling is required when the external device does not acknowledge the output high-impedance status. 18.5.1 VPP pin In the normal operation mode, 0 V is input to the VPP pin. In the flash memory programming mode, a 7.8 V write voltage is supplied to the VPP pin. The following shows an example of the connection of the VPP pin. Figure 18-7. VPP Pin Connection Example V850/SB1, V850/SB2 Dedicated flash programmer connection pin VPP Pull-down resistor (RVPP) 18.5.2 Serial interface pin The following shows the pins used by each serial interface. Table 18-4. Pins Used in Serial Interfaces Serial Interface Pins Used CSI0 SO0, SI0, SCK0 CSI0 + HS SO0, SI0, SCK0, P15 UART0 TXD0, RXD0 When connecting a dedicated flash programmer to a serial interface pin that is connected to other devices onboard, care should be taken to avoid conflict of signals and malfunction of the other devices, etc. User's Manual U13850EJ6V0UD 533 CHAPTER 18 FLASH MEMORY (1) Conflict of signals When connecting a dedicated flash programmer (output) to a serial interface pin (input) that is connected to another device (output), conflict of signals occurs. To avoid the conflict of signals, isolate the connection to the other device or set the other device to the output high-impedance status. Figure 18-8. Conflict of Signals (Serial Interface Input Pin) V850/SB1, V850/SB2 Conflict of signals Dedicated flash programmer connection pins Input pin Other device Output pin In the flash memory programming mode, the signal that the dedicated flash programmer sends out conflicts with signals another device outputs. Therefore, isolate the signals on the other device side. 534 User's Manual U13850EJ6V0UD CHAPTER 18 FLASH MEMORY (2) Malfunction of other device When connecting a dedicated flash programmer (output or input) to a serial interface pin (input or output) that is connected to another device (input), the signal output to the other device may cause the device to malfunction. To avoid this, isolate the connection to the other device or make the setting so that the input signal to the other device is ignored. Figure 18-9. Malfunction of Other Device V850/SB1, V850/SB2 Dedicated flash programmer connection pin Pin Other device Input pin In the flash memory programming mode, if the signal the V850/SB1 or V850/SB2 outputs affects the other device, isolate the signal on the other device side. V850/SB1, V850/SB2 Dedicated flash programmer connection pin Pin Other device Input pin In the flash memory programming mode, if the signal the dedicated flash programmer outputs affects the other device, isolate the signal on the other device side. User's Manual U13850EJ6V0UD 535 CHAPTER 18 FLASH MEMORY 18.5.3 RESET pin When connecting the reset signals of the dedicated flash programmer to the RESET pin that is connected to the reset signal generator on-board, conflict of signals occurs. To avoid the conflict of signals, isolate the connection to the reset signal generator. When a reset signal is input from the user system in the flash memory programming mode, the programming operation will not be performed correctly. Therefore, do not input signals other than the reset signals from the dedicated flash programmer. Figure 18-10. Conflict of Signals (RESET Pin) V850/SB1, V850/SB2 Conflict of signals Dedicated flash programmer connection pin RESET Reset signal generator Output pin In the flash memory programming mode, the signal the reset signal generator outputs conflicts with the signal the dedicated flash programmer outputs. Therefore, isolate the signals on the reset signal generator side. 18.5.4 Port pins (including NMI) When the flash memory programming mode is set, all the port pins except the pins that communicate with the dedicated flash programmer enter the output high-impedance status. If problems such as disabling output highimpedance status should occur in the external devices connected to the port, connect them to VDD or VSS via resistors. 18.5.5 Other signal pins Connect X1, X2, XT2, and AVREF to the same status as that in the normal operation mode. 18.5.6 Power supply Supply the power supply as follows: VDD = EVDD Supply the same power supply (AVDD, AVSS, BVDD, BVSS) as when in normal operation mode. 536 User's Manual U13850EJ6V0UD CHAPTER 18 FLASH MEMORY 18.6 Programming Method 18.6.1 Flash memory control The following shows the procedure for manipulating the flash memory. Figure 18-11. Procedure for Manipulating Flash Memory Start Supplies RESET pulse Switch to flash memory programming mode Select communication system Manipulate flash memory End? No Yes End User's Manual U13850EJ6V0UD 537 CHAPTER 18 FLASH MEMORY 18.6.2 Flash memory programming mode When rewriting the contents of flash memory using the dedicated flash programmer, set the V850/SB1 or V850/SB2 in the flash memory programming mode. When switching modes, set the VPP pin before releasing reset. When performing on-board writing, change modes using a jumper, etc. Figure 18-12. Flash Memory Programming Mode Flash memory programming mode 7.8 V VPP 3 V 1 0V RESET VPP 0V 7.8 V 538 Operation Mode Normal operation mode Flash memory programming mode User's Manual U13850EJ6V0UD 2 ... n CHAPTER 18 FLASH MEMORY 18.6.3 Selection of communication mode In the V850/SB1 and V850/SB2, the communication mode is selected by inputting pulses (16 pulses max.) to the VPP pin after switching to the flash memory programming mode. The VPP pulse is generated by the dedicated flash programmer. The following shows the relationship between the number of pulses and the communication mode. Table 18-5. List of Communication Modes VPP Pulse Communication Mode 0 CSI0 V850/SB1 and V850/SB2 perform slave operation, MSB first 3 CSI0 + HS V850/SB1 and V850/SB2 perform slave operation, MSB first 8 UART0 Others RFU Caution Remarks Communication rate: 9600 bps (at reset), LSB first Setting prohibited When UART0 is selected, the receive clock is calculated based on the reset command sent from the dedicated flash programmer after receiving the VPP pulse. 18.6.4 Communication command The V850/SB1 and V850/SB2 communicate with the dedicated flash programmer by means of commands. The command sent from the dedicated flash programmer to the V850/SB1 or V850/SB2 is called a "command". The response signal sent from the V850/SB1 or V850/SB2 to the dedicated flash programmer is called a "response command". Figure 18-13. Communication Command Command Response command Dedicated flash programmer User's Manual U13850EJ6V0UD V850/SB1, V850/SB2 539 CHAPTER 18 FLASH MEMORY The following shows the commands for flash memory control of the V850/SB1 and V850/SB2. All of these commands are issued from the dedicated flash programmer, and the V850/SB1 and V850/SB2 perform the various processing corresponding to the commands. Table 18-6. Flash Memory Control Command Category Verify Erase Blank check Data write System setting and control Command Name Function One-short verify command Compares the contents of the entire memory and the input data. Area verify command Compares the contents of the specified area and the input data Area erase command Erases the specified area. Writeback command Writes back the erased contents. One-shot blank check command Checks the erase state of the entire memory. Area blank check command Checks the erase state of the specified area. High-speed write command Writes data by the specification of the write address and the number of bytes to be written, and executes a verify check. Continuous write command Writes data from the address following the highspeed write command executed immediately before, and executes a verify check. Status read out command Acquires the status of operations. Oscillating frequency setting command Sets the oscillation frequency. Erasing time setting command Sets the erasing time of one-shot erase. Writing time setting command Sets the writing time of data write. Writeback time setting command Sets the writeback time. Baud rate setting command Sets the baud rate when using UART. Silicon signature command Reads outs the silicon signature information. Reset command Escapes from each state. The V850/SB1 and V850/SB2 send back response commands to the commands issued from the dedicated flash programmer. The following shows the response commands the V850/SB1 and V850/SB2 send out. Table 18-7. Response Command Response Command Name Function ACK (acknowledge) Acknowledges command/data, etc. NAK (not acknowledge) Acknowledges illegal command/data, etc. 18.6.5 Resources used The resources used in the flash memory programming mode are all the FFE000H to FFE7FFH area of the internal RAM and all the registers. The FFE800H to FFEFFFH area of the internal RAM retains data as long as the power is on. The registers that are initialized by reset are changed to the default values. 540 User's Manual U13850EJ6V0UD CHAPTER 19 IEBus CONTROLLER (V850/SB2) IEBus (Inter Equipment Bus) is a small-scale digital data transfer system that transfers data between units. To implement IEBus with the V850/SB2, an external IEBus driver and receiver are necessary because they are not provided. The internal IEBus controller of the V850/SB2 is of negative logic. 19.1 IEBus Controller Function 19.1.1 Communication protocol of IEBus The communication protocol of the IEBus is as follows: (1) Multi-task mode All the units connected to the IEBus can transfer data to the other units. (2) Broadcasting communication function Communication between one unit and plural units can be performed as follows: * Group-unit broadcasting communication: Broadcasting communication to group units * All-unit broadcasting communication: Broadcasting communication to all units. (3) Effective transfer rate The effective transfer rate is in mode 1 (the V850/SB2 does not support modes 0 and 2 for the effective transfer rate). * Mode 1: Approx. 17 Kbps Caution Different modes must not be mixed on one IEBus. (4) Communication mode Data transfer is executed in half-duplex asynchronous communication mode. (5) Access control: CSMA/CD (Carrier Sense Multiple Access with Collision Detection) The priority of the IEBus is as follows: <1> Broadcasting communication takes precedence over individual communication (communication from one unit to another). <2> The lower master address takes precedence. (6) Communication scale The communication scale of IEBus is as follows: * Number of units: 50 MAX. * Cable length: 150 m MAX. (when twisted pair cable is used) Caution The communication scale in an actual system differs depending on the characteristics of the cables, etc., constituting the IEBus driver/receiver and IEBus. User's Manual U13850EJ6V0UD 541 CHAPTER 19 IEBus CONTROLLER (V850/SB2) 19.1.2 Determination of bus mastership (arbitration) An operation to occupy the bus is performed when a unit connected to the IEBus controls the other units. This operation is called arbitration. When two or more units simultaneously start transmission, arbitration is used to grant one of the units the permission to occupy the bus. Because only one unit is granted the bus mastership as a result of arbitration, the priority conditions of the bus are predetermined as follows: Caution The bus mastership is released if communication is aborted. (1) Priority by communication type Broadcasting communication (communication from one unit to plural units) takes precedence over normal communication (communication from one unit to another). (2) Priority by master address If the communication type is the same, communication with the lower master address takes precedence. A master address consists of 12 bits, with unit 000H having the highest priority and unit FFFH having the lowest priority. 19.1.3 Communication mode Although the IEBus has three communication modes each having a different transfer rate, the V850/SB2 supports only communication mode 1. The transfer rate and the maximum number of transfer bytes in one communication frame in communication mode 1 are as shown in Table 19-1. Table 19-1. Transfer Rate and Maximum Number of Transfer Bytes in Communication Mode 1 Communication Mode Maximum Number of Transfer Bytes (Bytes/Frame) Effective Transfer Rate (Kbps)Note 1 32 Approx. 17 Note The effective transfer rate when the maximum number of transfer bytes is transmitted. Select the communication mode (mode 1) for each unit connected to the IEBus before starting communication. If the communication mode of the master unit and that of the partner unit (slave unit) are not the same, communication is not correctly executed. 542 User's Manual U13850EJ6V0UD CHAPTER 19 IEBus CONTROLLER (V850/SB2) 19.1.4 Communication address With the IEBus, each unit is assigned a specific 12-bit address. This communication address consists of the following identification numbers: * Higher 4 bits: Group number (number to identify the group to which each unit belongs) * Lower 8 bits: Unit number (number to identify each unit in a group) 19.1.5 Broadcasting communication Normally, transmission or reception is performed between the master unit and its partner slave unit on a one-toone basis. During broadcasting communication, however, two or more slave units exist and the master unit executes transmission to these slave units. Because plural slave units exist, the slave units do not return an acknowledge signal during communication. Whether broadcasting communication or normal communication is to be executed is selected by broadcasting bit (for this bit, refer to 19.1.6 (2) Broadcasting bit). Broadcasting communication is classified into two types: group-unit broadcasting communication and all-unit broadcasting communication. Group-unit broadcasting and all-unit broadcasting are identified by the value of the slave address (for the slave address, refer to 19.1.6 (4) Slave address field). (1) Group-unit broadcasting communication Broadcasting communication is performed to the units in a group identified by the group number indicated by the higher 4 bits of the communication address. (2) All-unit broadcasting communication Broadcasting communication is performed to all the units, regardless of the value of the group number. User's Manual U13850EJ6V0UD 543 CHAPTER 19 IEBus CONTROLLER (V850/SB2) 19.1.6 Transfer format of IEBus Figure 19-1 shows the transfer signal format of the IEBus. Figure 19-1. IEBus Transfer Signal Format Header Frame format Master address field Slave address field Telegraph Control field length field Broad- Master Slave Start Control casting address P address P A PA bit bit bit bit bit Data field TeleData graph PA length P A bit bit Data PA bit Remarks 1. P: Parity bit, A: ACK/NACK bit 2. The master station ignores the acknowledge bit during broadcasting communication. (1) Start bit The start bit is a signal that informs the other units of the start of data transfer. The unit that is to start data transfer outputs a high-level signal (start bit) from the IETX pin for a specific time, and then starts outputting the broadcasting bit. If another unit has already output its start bit when one unit is to output the start bit, this unit does not output the start bit but waits for completion of output of the start bit by the other unit. When the output of the start bit by the other unit is complete, the unit starts outputting the broadcasting bit in synchronization with the completion of the start bit output by the other unit. The units other than the one that has started communication detect this start bit, and enter the reception status. (2) Broadcasting bit This bit indicates whether the master selects one slave (individual communication) or plural slaves (broadcasting communication) as the other party of communication. When the broadcasting bit is 0, it indicates broadcasting communication; when it is 1, individual communication is indicated. Broadcasting communication is classified into two types: group-unit communication and all-unit communication. These communication types are identified by the value of the slave address (for the slave address, refer to 19.1.6 (4) Slave address field). Because two or more slave units exist in the case of broadcasting communication, the acknowledge bit in each field subsequent to the master address field is not returned. If two or more units start transmitting a communication frame at the same time, broadcasting communication takes precedence over individual communication, and wins in arbitration. If one station occupies the bus as the master, the value set to the broadcasting request bit (ALLRQ) of the IEBus control register (BCR) is output. 544 User's Manual U13850EJ6V0UD CHAPTER 19 IEBus CONTROLLER (V850/SB2) (3) Master address field The master address field is output by the master to inform a slave of the master's address. The configuration of the master address field is as shown in Figure 19-2. If two or more units start transmitting the broadcasting bit at the same time, the master address field makes a judgment of arbitration. The master address field compares the data it outputs with the data on the bus each time it has output one bit. If the master address output by the master address field is found to be different from the data on the bus as a result of comparison, it is assumed that the master has lost in arbitration. As a result, the master stops transmission and enters the reception status. Because the IEBus is configured of wired AND, the unit having the minimum master address of the units participating in arbitration (arbitration masters) wins in arbitration. After a 12-bit master address has been output, only one unit remains in the transmission status as one master unit. Next, this master unit outputs a parity bit, determines the master address of other unit, and starts outputting a slave address field. If one unit occupies the bus as the master, the address set by the IEBus unit address register (UAR) is output. Figure 19-2. Master Address Field Master address field Master address (12 bits) MSB Parity LSB User's Manual U13850EJ6V0UD 545 CHAPTER 19 IEBus CONTROLLER (V850/SB2) (4) Slave address field The master outputs the address of the unit with which it is to communicate. Figure 19-3 shows the configuration of the slave address field. A parity bit is output after a 12-bit slave address has been transmitted in order to prevent a wrong slave address from being received by mistake. Next, the master unit detects an acknowledge signal from the slave unit to confirm that the slave unit exists on the bus. When the master has detected the acknowledge signal, it starts outputting the control field. During broadcasting communication, however, the master does not detect the acknowledge bit but starts outputting the control field. The slave unit outputs the acknowledge signal if its slave address matches and if the slave detects that the parities of both the master address and slave address are even. The slave unit judges that the master address or slave address has not been correctly received and does not output the acknowledge signal if the parities are odd. At this time, the master unit is in the standby (monitor) status, and communication ends. During broadcasting communication, the slave address is used to identify group-unit broadcasting or all-unit broadcasting, as follows: If slave address is FFFH: All-unit broadcasting communication If slave address is other than FFFH: Group-unit broadcasting communication Remark The group No. during group-unit broadcasting communication is the value of the higher 4 bits of the slave address. If one unit occupies the bus as the master, the address set by the slave address register (SAR) is output. Figure 19-3. Slave Address Field Slave address field Slave address (12 bits) Parity ACK Unit No. Group No. MSB LSB (5) Control field The master outputs the operation it requires the slave to perform, by using this field. The configuration of the control field is as shown in Figure 19-4. If the parity following the control bit is even and if the slave unit can execute the function required by the master unit, the slave unit outputs an acknowledge signal and starts outputting the telegraph length field. If the slave unit cannot execute the function required by the master unit even if the parity is even, or if the parity is odd, the slave unit does not output the acknowledge signal, and returns to the standby (monitor) status. The master unit starts outputting the telegraph field after confirming the acknowledge signal. If the master cannot confirm the acknowledge signal, the master unit enters the standby status, and communication ends. During broadcasting communication, however, the master unit does not confirm the acknowledge signal, and starts outputting the telegraph length field. Table 19-2 shows the contents of the control bits. 546 User's Manual U13850EJ6V0UD CHAPTER 19 IEBus CONTROLLER (V850/SB2) Table 19-2. Contents of Control Bits Notes 1. Bit 3Note 1 Bit 2 Bit 1 Bit 0 0 0 0 0 Reads slave status 0 0 0 1 Undefined 0 0 1 0 Undefined 0 0 1 1 Reads data and locksNote 2 0 1 0 0 Reads lock address (lower 8 bits)Note 3 0 1 0 1 Reads lock address (higher 4 bits)Note 3 0 1 1 0 Reads slave status and unlocksNote 2 0 1 1 1 Reads data 1 0 0 0 Undefined 1 0 0 1 Undefined 1 0 1 0 Writes command and locksNote 2 1 0 1 1 Writes data and locksNote 2 1 1 0 0 Undefined 1 1 0 1 Undefined 1 1 1 0 Writes command 1 1 1 1 Writes data Function The telegraph length bit of the telegraph length field and data transfer direction of the data field change as follows depending on the value of bit 3 (MSB). If bit 3 is `1': Transfer from master unit to slave unit If bit 3 is `0': Transfer from slave unit to master unit 2. This is a control bit that specifies locking or unlocking (refer to 19.1.7 (4) Locking and unlocking). 3. The lock address is transferred in 1-byte (8-bit) units and is configured as follows: MSB LSB Control bit: 4H Control bit: 5H Lower 8 bits Undefined Higher 4 bits User's Manual U13850EJ6V0UD 547 CHAPTER 19 IEBus CONTROLLER (V850/SB2) If the control bit received from the master unit is not as shown in Table 19-3, the unit locked by the master unit rejects acknowledging the control bit, and does not output the acknowledge bit. Table 19-3. Control Field for Locked Slave Unit Bit 3Note 1 Bit 2 Bit 1 Bit 0 0 0 0 0 Reads slave status 0 1 0 0 Reads lock address (lower 8 bits) 0 0 0 1 Reads lock address (higher 4 bits) Function Moreover, units for which lock is not set by the master unit reject acknowledgment and do not output an acknowledge bit when the control data shown in Table 19-4 is acknowledged. Table 19-4. Control Field for Unlocked Slave Unit Bit 3 Bit 2 Bit 1 Bit 0 Function 0 1 0 0 Lock address read (lower 8 bits) 0 1 0 1 Lock address read (higher 4 bits) If one unit occupies the bus as the master, the value set to the IEBus control register (CDR) is output. Figure 19-4. Control Field Control field Control bit (4 bits) MSB 548 Parity ACK LSB User's Manual U13850EJ6V0UD Table 19-5. Acknowledge Signal Output Condition of Control Field (a) If received control data is AH, BH, EH, or FH Communication Type (ALL TRANS) Independent communication = 0 Broadcasting communication = 1 0 Communication Target (SLVRQ) Slave Specification = 1 No Specification = 0 1 Lock Status (LOCK) Lock = 1 Unlock = 0 Master Unit Identification (Match with PAR) Lock Request Unit = 1 Other = 0 0 don't care 1 Slave Transmission Enable (ENSLVTX) Slave Reception Enable (ENSLVRX) Received Control Data AH don't care BH EH FH { 1 1 x Other than above 0 Communication Target (SLVRQ) Slave Specification = 1 No Specification = 0 1 Lock Status (LOCK) Lock = 1 Unlock = 0 Master Unit Identification (Match with PAR) Lock Request Unit = 1 Other = 0 0 don't care 1 Slave Transmission Enable (ENSLVTX) Slave Reception Enable (ENSLVRX) Received Control Data 0H 3H 4H 5H 6H 7H { x x x { x 1 { { x x { { don't care { x { { x x { x { { { x 1 { { { { { { 0 1 don't care Other than above Caution If the received control data is other than the data shown in Table 19-5, x (ACK is not returned) is unconditionally assumed. Remarks 1. {: ACK is returned. x: ACK is not returned. 2. ENSLVTX: Bit 4 of the IEBus unit control register (BCR) ENSLVRX: Bit 3 of the IEBus unit control register (BCR) 549 LOCK: Bit 2 of the IEBus unit status register (USR) SLVRQ: Bit 6 of the IEBus unit status register (USR) PAR: IEBus partner address register x IEBus CONTROLLER (V850/SB2) User's Manual U13850EJ6V0UD Communication Type (ALL TRANS) Independent communication = 0 Broadcasting communication = 1 CHAPTER 19 (b) If received control data is 0H, 3H, 4H, 5H, 6H, or 7H CHAPTER 19 IEBus CONTROLLER (V850/SB2) (6) Telegraph length field This field is output by the transmission side to inform the reception side of the number of bytes of the transmit data. The configuration of the telegraph length field is as shown in Figure 19-5. Table 19-6 shows the relationship between the telegraph length bit and the number of transmit data. Figure 19-5. Telegraph Length Field Telegraph length field Telegraph length bit (8 bits) MSB Parity ACK LSB Table 19-6. Contents of Telegraph Length Bit Telegraph Length Bit (Hex) Number of Transmit Data Bytes 01H 1 byte 02H 2 bytes | | FFH 255 bytes 00H 256 bytes The operation of the telegraph length field differs depending on whether the master transmits data (when control bit 3 is 1) or receives data (when control bit 3 is 0). (a) When master transmits data The telegraph length bit and parity bit are output by the master unit and the synchronization signals of bits are output by the master unit. When the slave unit detects that the parity is even, it outputs the acknowledge signal, and starts outputting the data field. During broadcasting communication, however, the slave unit does not output the acknowledge signal. If the parity is odd, the slave unit judges that the telegraph length bit has not been correctly received, does not output the acknowledge signal, and returns to the standby (monitor) status. At this time, the master unit also returns to the standby status, and communication ends. (b) When master receives data The telegraph length bit and parity bit are output by the slave unit and the synchronization signals of bits are output by the master unit. If the master unit detects that the parity bit is even, it outputs the acknowledge signal. If the parity bit is odd, the master unit judges that the telegraph length bit has not been correctly received, does not output the acknowledge signal, and returns to the standby status. At this time, the slave unit also returns to the standby status, and communication ends. 550 User's Manual U13850EJ6V0UD CHAPTER 19 IEBus CONTROLLER (V850/SB2) (7) Data field This is data output by the transmission side. The master unit transmits or receives data to or from a slave unit by using the data field. The configuration of the data field is as shown below. Figure 19-6. Data Field Data field (number specified by telegraph length field) One data Control bit (8 bits) MSB Parity ACK Parity ACK LSB Following the data bit, the parity bit and acknowledge bit are respectively output by the master unit and slave unit. Use broadcasting communication only for when the master unit transmits data. At this time, the acknowledge bit is ignored. User's Manual U13850EJ6V0UD 551 CHAPTER 19 IEBus CONTROLLER (V850/SB2) The operation differs as follows depending on whether the master transmits or receives data. (a) When master transmits data When the master units writes data to a slave unit, the master unit transmits the data bit and parity bit to the slave unit. If the parity is even and the receive data is not stored in the IEBus data register (DR) when the slave unit has received the data bit and parity bit, the slave unit outputs an acknowledge signal. If the parity is odd or if the receive data is stored in the IEBus data register (DR), the slave unit rejects receiving the data, and does not output the acknowledge signal. If the slave unit does not output the acknowledge signal, the master unit transmits the same data again. This operation continues until the master detects the acknowledge signal from the slave unit, or the data exceeds the maximum number of transmit bytes. If the data has continuation and the maximum number of transmit bytes is not exceeded when the parity is even and when the slave unit outputs the acknowledge signal, the master unit transmits the next data. During broadcasting communication, the slave unit does not output the acknowledge signal, and the master unit transfers 1 byte of data at a time. If the parity is odd or the DR register is storing receive data after the slave unit has received the data bit and parity bit during broadcasting communication, the slave unit judges that reception has not been performed correctly, and stops reception. (b) When master receives data When the master unit reads data from a slave unit, the master unit outputs a sync signal corresponding to all the read bits. The slave unit outputs the contents of the data and parity bits to the bus in response to the sync signal from the master unit. The master unit reads the data and parity bits output by the slave unit, and checks the parity. If the parity is odd, or if the DR register is storing a receive data, the master unit rejects accepting the data, and does not output the acknowledge signal. If the maximum number of transmit bytes is within the value that can be transmitted in one communication frame, the master unit repeats reading the same data. If the parity is even and the DR register is not storing a receive data, the master unit accepts the data and returns the acknowledge signal. If the maximum number of transmit bytes is within the value that can be transmitted in one frame, the master unit reads the next data. Caution Do not operate master reception in broadcasting communication, because the slave unit cannot be defined and data transfer cannot be performed correctly. (8) Parity bit The parity bit is used to check to see if the transmit data has no error. The parity bit is appended to each data of the master address, slave address, control, telegraph length, and data bits. The parity is an even parity. If the number of bits in data that are `1' is odd, the parity bit is `1'. If the number of bits in the data that are `1' is even, the parity bit is `0'. 552 User's Manual U13850EJ6V0UD CHAPTER 19 IEBus CONTROLLER (V850/SB2) (9) Acknowledge bit During normal communication (communication from one unit to another), an acknowledge bit is appended to the following locations to check if the data has been correctly received. * End of slave address field * End of control field * End of telegraph length field * End of data field The definition of the acknowledge bit is as follows: * 0: Indicates that the transmit data is recognized (ACK). * 1: Indicates that the transmit data is not recognized (NACK). During broadcasting communication, however, the contents of the acknowledge bit are ignored. (a) Last acknowledge bit of slave field The last acknowledge bit of the slave field serves as NACK in any of the following cases, and transmission is stopped. * If the parity of the master address bit or slave address bit is incorrect * If a timing error (error in bit format) occurs * If a slave unit does not exist (b) Last acknowledge bit of control field The last acknowledge bit of the control field serves as NACK in any of the following cases, and transmission is stopped. * If the parity of the control bit is incorrect * If control bit 3 is `1' (write operation) when the slave reception enable flag (ENSLVRX) is not set (1) Note * If the control bit indicates reading of data (3H or 7H) when the slave transmission enable flag (ENSLVTX) is not set (1) Note * If a unit other than that has set locking requests 3H, 6H, 7H, AH, BH, EH, or FH of the control bit when locking is set * If the control bit indicates reading of lock addresses (4H, 5H) even when locking is not set * If a timing error occurs * If the control bit is undefined Note Refer to 19.3.2 (1) IEBus control register (BCR). Cautions 1. Even when the slave transmission enable flag (ENSLVTX) is not set (1), ACK is always returned if slave status request control data is received. 2. Even when slave reception enable flag (ENSLVRX) is not set (1), NACK is always returned by the acknowledge bit in the control field if data/command writing control data is acknowledged. Slave reception can be disabled (communication stopped) by ENSLVRX flag only in the case of independent communication. In the case of broadcasting communication, communication is maintained and the data request interrupt (INTIE1) or IEBus end interrupt (INTIE2) is generated. User's Manual U13850EJ6V0UD 553 CHAPTER 19 IEBus CONTROLLER (V850/SB2) (c) Last acknowledge bit of telegraph length field The last acknowledge bit of the telegraph length field serves as NACK in any of the following cases, and transmission is stopped. * If the parity of the telegraph length bit is incorrect * If a timing error occurs (d) Last acknowledge bit of data field The last acknowledge bit of the data field serves as NACK in any of the following cases, and transmission is stopped. * If the parity of the data bit is incorrect Note * If a timing error occurs after the preceding acknowledge bit has been transmitted * If the receive data is stored in the IEBus data register (DR) and no more data can be received Note Note In this case, when the communication executed is individual communication, if the maximum number of transmit bytes is within the value that can be transmitted in one frame, the transmission side executes transmission of that data field again. For broadcasting communication, the transmission side does not execute transmission again, a communication error occurs on the reception side and reception stops. 19.1.7 Transfer data (1) Slave status The master unit can learn why the slave unit did not return the acknowledge bit (ACK) by reading the slave status. The slave status is determined according to the result of the last communication the slave unit has executed. All the slave units can supply information on the slave status. The configuration of the slave status is shown below. 554 User's Manual U13850EJ6V0UD CHAPTER 19 IEBus CONTROLLER (V850/SB2) Figure 19-7. Bit Configuration of Slave Status MSB Bit 7 LSB Bit 6 Bit 5 Bit 4 Bit 0Note 1 Bit 2 0 Transmit data is not written in IEBus data register (DR) 1 Transmit data is written in IEBus data register (DR) Receive data is not stored in IEBus data register (DR) 1 Receive data is stored in IEBus data register (DR) Bit 2 Meaning 0 Unit is not locked 1 Unit is locked Bit 3 Meaning Fixed to 0 Bit 4Note 3 Meaning 0 Slave transmission is stopped 1 Slave transmission is ready Bit 5 0 Bit 0 Meaning 0 0 Bit 1 Meaning Bit 1Note 2 Notes 1. Bit 3 Meaning Fixed to 0 Bit 7 Bit 6 Meaning 0 0 Mode 0 0 1 Mode 1 1 0 Mode 2 1 1 Not used Indicates the highest mode supported by unitNote 4. After reset: Bit 0 is set to 1. 2. The receive buffer size is 1 byte. 3. When the V850/SB2 serves as a slave unit, this bit corresponds to the status indicated by bit 4 (ENSLVTX) of the IEBus control register (BCR). 4. When the V850/SB2 serves as a slave unit, bits 7 and 6 are fixed to `0' and `1' (mode 1), respectively. User's Manual U13850EJ6V0UD 555 CHAPTER 19 IEBus CONTROLLER (V850/SB2) (2) Lock address When the lock address is read (control bit: 4H or 5H), the address (12 bits) of the master unit that has issued the lock instruction is configured in 1-byte units as shown below and read. Figure 19-8. Configuration of Lock Address MSB LSB Control bit: 4H Lower 8 bits Control bit: 5H Undefined Higher 4 bits (3) Data If the control bit indicates reading of data (3H or 7H), the data in the data buffer of the slave unit is read by the master unit. If the control bit indicates writing of data (BH or FH), the data received by the slave unit is processed according to the operation rule of that slave unit. (4) Locking and unlocking The lock function is used when a message is transferred in two or more communication frames. The unit that is locked does not receive data from units other than the one that has locked the unit (does not receive broadcasting communication). A unit is locked or unlocked as follows: (a) Locking If the communication frame is completed without succeeding to transmit or receive data of the number of bytes specified by the telegraph length bit after the telegraph length field has been transmitted or received (ACK = 0) by the control bit that specifies locking (3H, AH, or BH), the slave unit is locked by the master unit. At this time, the bit (bit 2) in the byte indicating the slave status is set to `1'. (b) Unlocking After transmitting or receiving data of the number of data bytes specified by the telegraph length bit in one communication frame by the control bit that has specified locking (3H, AH, or BH), or the control bit that has specified unlocking (6H), the slave unit is unlocked by the master unit. At this time, the bit related to locking (bit 2) in the byte indicating the slave status is reset to `0'. Locking or unlocking is not performed during broadcasting communication. Locking and unlocking conditions are shown below. 556 User's Manual U13850EJ6V0UD CHAPTER 19 IEBus CONTROLLER (V850/SB2) (c) Lock setting conditions Control Data Broadcasting Communication Communication End Frame End 3H, 6HNote Individual Communication Communication End Frame End Cannot be locked Lock set AH, BH Cannot be locked Cannot be locked Cannot be locked Lock set 0H, 4H, 5H, EH, FH Cannot be locked Cannot be locked Cannot be locked Cannot be locked (d) Unlock release conditions (while locked) Control Data Broadcasting Communication from Lock Request Unit Communication End Frame End 3H, 6HNote Individual Communication from Lock Request Unit Communication End Frame End Unlocked Remains locked AH, BH Unlocked Unlocked Unlocked Remains locked 0H, 4H, 5H, EH, FH Remains locked Remains locked Remains locked Remains locked Note The frame end of control data 6H (slave status read/unlock) occurs when the parity in the data field is odd, and when the acknowledge signal from the IEBus unit is repeated up to the maximum number of transfer bytes without being output. 19.1.8 Bit format The format of the bits constituting the communication frame of the IEBus is shown below. Figure 19-9. Bit Format of IEBus Logic "1" Logic "0" Preparation period Preparation period: Synchronization Data period period Stop period First low-level (logic "1") period Synchronization period: Next high-level (logic "0") period Data period: Period indicating value of bit Stop period: Last low-level (logic "1") period The synchronization period and data period are almost equal to each other in length. The IEBus synchronizes each bit. The specifications on the time of the entire bit and the time related to the period allocated to that bit differ depending on the type of the transmit bit, or whether the unit is the master unit or a slave unit. The master and slave units monitor whether each period (preparation period, synchronization period, data period, and stop period) is output for specified time while they are in communication. If a period is not output for the specified time, the master and slave units report a timing error, immediately terminate communication and enter the standby status. User's Manual U13850EJ6V0UD 557 CHAPTER 19 IEBus CONTROLLER (V850/SB2) 19.2 IEBus Controller Configuration The block diagram of the IEBus controller is shown below. Figure 19-10. IEBus Controller Block Diagram CPU interface block Internal registers 8 12 12 12 8 8 8 8 8 8 8 8 BCR(8) UAR(12) SAR(12) PAR(12) CDR(8) DLR(8) DR(8) USR(8) ISR(8) SSR(8) SCR(8) CCR(8) 8 8 8 12 12 12 8 8 8 8 8 8 Internal bus 12 8 8 RX NF MPX PSR (8 bits) TX/RX TX MPX Parity generation error detection 12-bit latch Interrupt controller Comparator Contention detection INT request (handler, DMA transfer) Interrupt control block ACK generation IEBus interface block 5 Internal bus R/W CLK Field processing block Bit processing block (1) Hardware configuration and function The IEBus mainly consists of the following six internal blocks. * CPU interface block * Interrupt control block * Internal registers * Bit processing block * Field processing block * IEBus interface block 558 User's Manual U13850EJ6V0UD CHAPTER 19 IEBus CONTROLLER (V850/SB2) (a) CPU interface block This is a control block that interfaces between the CPU (V850/SB2) and IEBus. (b) Interrupt control block This control block transfers interrupt request signals from IEBus to the CPU. (c) Internal registers These registers set data to the control registers and fields that control IEBus (for the internal registers, refer to 19.3 Internal Registers of IEBus Controller). (d) Bit processing block This block generates and disassembles bit timing, and mainly consists of a bit sequence ROM, 8-bit preset timer, and comparator. (e) Field processing block This block generates each field in the communication frame, and mainly consists of a field sequence ROM, 4-bit down counter, and comparator. (f) IEBus interface block This is the interface block for an external driver/receiver, and mainly consists of a noise filter, shift register, collision detector, parity detector, parity generator, and ACK/NACK generator. User's Manual U13850EJ6V0UD 559 CHAPTER 19 IEBus CONTROLLER (V850/SB2) 19.3 Internal Registers of IEBus Controller 19.3.1 Internal register list Table 19-7. Internal Registers of IEBus Controller Address Function Register Name Symbol R/W R/W Bit Units for Manipulation After Reset 1 Bit 8 Bits 16 Bits - 00H 0000H FFFFF3E0H IEBus control register BCR FFFFF3E2H IEBus unit address register UAR - - FFFFF3E4H IEBus slave address register SAR - - FFFFF3E6H IEBus partner address register PAR R - - FFFFF3E8H IEBus control data register CDR R/W - - FFFFF3EAH IEBus telegraph length register DLR - - FFFFF3ECH IEBus data register DR - - FFFFF3EEH IEBus unit status register USR R - FFFFF3F0H IEBus interrupt status register ISR R/W - FFFFF3F2H IEBus slave status register SSR R - 41H FFFFF3F4H IEBus communication success counter SCR - - 01H FFFFF3F6H IEBus transmit counter CCR - - 20H FFFFF3F8H IEBus clock selection register IECLK R/W - - 00H R/W - - 00H FFFFF3DEH IEBus high-speed clock selection register Note IEHCLK Note The IEHCLK register is available only in the V850/SB2. 560 User's Manual U13850EJ6V0UD 01H 00H CHAPTER 19 IEBus CONTROLLER (V850/SB2) 19.3.2 Internal registers The internal registers incorporated in the IEBus controller are described below. (1) IEBus control register (BCR) After reset: 00H BCR RW Address: FFFFF3E0H <7> <6> <5> ENIEBUS MSTRQ ALLRQ ENIEBUS <4> <3> ENSLVTX ENSLVRX 2 1 0 0 0 0 Communication enable flag 0 IEBus unit stopped 1 IEBus unit active MSTRQ Master request flag 0 IEBus unit not requested as master 1 IEBus unit requested as master ALLRQ Broadcast request flag 0 Individual communication requested 1 Broadcasting communication requested ENSLVTX Slave transmission enable flag 0 Slave transmission disabled 1 Slave transmission enabled ENSLVRX Slave reception enable flag 0 Slave reception disabled 1 Slave reception enabled Cautions 1. While the IEBus is operating as the master, writing to the BCR register (including bit manipulation instructions) is disabled until either the end of that communication or frame, or until communication is stopped by the occurrence of an arbitration-loss communication error. Master requests cannot therefore be multiplexed. However, if the IEBus is specified as a slave while a master request is being held pending, the BCR can be written to at the end of communication to clear the communication end/frame end flag. This is also the case when communication has been forcibly stopped (ENIEBUS flag = 0). 2. If a bit manipulation instruction for the BCR register conflicts with a hardware reset of the MSTRQ flag, the BCR register may not operate normally. The following countermeasures are recommended in this case. * Because the hardware reset is instigated in the acknowledgment period of the slave address field, be sure to observe Caution 1 of (b) Master request flag (MSTRQ) below. * Be sure to observe the caution above regarding writing to the BCR register. User's Manual U13850EJ6V0UD 561 CHAPTER 19 IEBus CONTROLLER (V850/SB2) (a) Communication enable flag (ENIEBUS)...Bit 7 <Set/reset conditions> Set: By software Reset: By software Caution Before setting the ENIBUS flag, make the following setting: * Set the interrupt enabled (EI) status and enable the interrupt processing of INTIE2 (IEBMK = 2). * Set the IEBus unit address register (UAR) (b) Master request flag (MSTRQ)...Bit 6 <Set/reset conditions> Set: By software Reset: By hardware, at the end of the arbitration period. Because the reset signal is generated in the ACK period of the slave address field, if a MSTRQ flag setting instruction is sent in this period, it will be invalid. Cautions 1. The master request should be resent by software following a loss in arbitration. When resending the master request in this case, set (1) the MSTRQ flag after securing the required wait period. This flag is unable to be set (1) before the end of this wait period. INTIE2 interrupt signal MSTRQ flag reset signal Start interrupt generation Forcible reset period Wait period (61.7 s MAX) 2. When a master request has been sent and bus mastership acquired, do not set the MSTRQ, ENSLVTX, or ENSLVRX flag until the end of communication (i.e. the ISR register's communication end/frame end flag is set (1)) as setting these flags disables interrupt request generation. However, these flags can be set if communication has been aborted. (c) Broadcast request flag (ALLRQ)...Bit 5 <Set/reset conditions> Set: By software Reset: By software Caution When requesting broadcasting communication, always set the ALLRQ flag, then the MSTRQ flag. 562 User's Manual U13850EJ6V0UD CHAPTER 19 IEBus CONTROLLER (V850/SB2) (d) Slave transmission enable flag (ENSLVTX)...Bit 4 <Set/reset conditions> Set: By software Reset: By software Cautions 1. Clear the ENSLVTX flag before setting the MSTRQ flag when making a master request. If a slave transmission request is sent in slave mode when the ENSLVTX flag is unset, NACK in the control field will be returned. Moreover, when returning to an enabled state from a disabled state, transmission becomes valid from the next frame. 2. If the controller receives control data for data/control writing (3H, 7H) when the ENSLVTX flag is unset, NACK will be returned via the acknowledge bit of the control field. 3. The status interrupt (INTIE2) will be generated and communication continued when the control data of a slave status request is returned, even if the ENSLVTX flag is in the reset status. (e) Slave reception enable flag (ENSLVRX)...Bit 3 <Set/reset conditions> Set: By software Reset: By software Caution If the ENSLVRX flag is reset when the IEBus is busy with other CPU processing, NACK will be returned via the acknowledge bit of the control field, making it possible to disable slave reception. Note that resetting this flag only disables individual communication, not broadcasting communication. If the received slave address matches the unit address during individual communication, however, the start interrupt (INTIE2) is generated. If CPU processing has priority (neither reception nor transmission occurs), be sure to stop the IEBus unit by resetting the ENIEBUS flag. Note also that when returning to an enabled state from a disabled state, transmission becomes valid from the next frame. User's Manual U13850EJ6V0UD 563 CHAPTER 19 IEBus CONTROLLER (V850/SB2) (2) IEBus unit address register (UAR) This register sets the unit address of an IEBus unit. This register must be always set before starting communication. Sets the unit address (12 bits) to bits 11 to 0. 15 14 13 12 11 10 UAR 0 0 0 9 8 7 6 5 4 3 2 1 0 0 Address FFFFF3E2H After reset R/W 0000H R/W (3) IEBus slave address register (SAR) During master request, the value of this register is reflected in the value of the transmit data in the slave address field. This register must be always set before starting communication. Sets the slave address (12 bits) to bits 11 to 0. 15 14 13 12 11 10 SAR 564 0 0 0 9 8 7 6 5 4 3 2 1 0 0 Address FFFFF3E4H User's Manual U13850EJ6V0UD After reset R/W 0000H R/W CHAPTER 19 IEBus CONTROLLER (V850/SB2) (4) IEBus partner address register (PAR) (a) When slave unit The value of the receive data in the master address field (address of the master unit) is written to this register. If a request "4H" to read the lock address (lower 8 bits) is received from the master, the CPU must read the value of this register, and write it to the lower 8 bits IEBus data register (DR). If a request "5H" to read the lock address (higher 4 bits) is received from the master, the CPU must read the value of this register and write the data of the higher 4 bits to DR. Sets the partner address (12 bits) to bits 11 to 0. 15 14 13 12 11 10 PAR 0 0 0 9 8 7 6 5 4 3 2 1 0 0 Address FFFFF3E6H After reset R/W 0000H R (5) IEBus control data register (CDR) (a) When master unit The data of the lower 4 bits is reflected in the data transmitted in the control field. During master request, this register must be set in advance before starting communication. (b) When slave unit The data received in the control field is written to the lower 4 bits. When the status transmission flag (STATUS) of the IEBus interrupt status register (ISR) is set, an interrupt (INTIE2) is issued, and each processing should be performed by software, according to the value of the lower 4 bits of CDR. User's Manual U13850EJ6V0UD 565 CHAPTER 19 After reset: 01H CDR R/W IEBus CONTROLLER (V850/SB2) Address: FFFFF3E8H 7 6 5 4 3 2 1 0 0 0 0 0 MOD SELCL2 SELCL1 SELCL0 MOD SELCL2 SELCL1 SELCL0 0 0 0 0 Reads slave status 0 0 0 1 Undefined 0 0 1 0 Undefined 0 0 1 1 Reads data and locks 0 1 0 0 Reads lock address (lower 8 bits) 0 1 0 1 Reads lock address (lower 4 bits) 0 1 1 0 Reads slave status and unlocks 0 1 1 1 Reads data 1 0 0 0 Undefined 1 0 0 1 Undefined 1 0 1 0 Writes command and locks 1 0 1 1 Writes data and locks 1 1 0 0 Undefined 1 1 0 1 Undefined 1 1 1 0 Writes command 1 1 1 1 Writes data Function Cautions 1. Because the slave unit must judge whether the received data is a "command" or "data", it must read the value of this register after completing communication. 2. If the master unit sets an undefined value, NACK is returned from the slave unit, and communication is aborted. During broadcasting communication, however, the master unit continues communication without recognizing ACK/NACK; therefore, make sure not to set an undefined value to this register during broadcasting communication. 3. In the case of defeat in a bus conflict and a slave status request is received from the unit that won, the telegraph length register (DLR) is fixed to "01H". Therefore, when a re-request of the master follows, the appointed telegraph length must be set to DLR. 566 User's Manual U13850EJ6V0UD CHAPTER 19 IEBus CONTROLLER (V850/SB2) (c) Slave status return operation When the IEBus receives a request to transfer from master to slave status or a lock address request (control data: 0H, 6H), whether ACK in the control field is returned or not depends on the status of the IEBus unit. (1) If 0H or 6H control data was received in the unlocked state ACK returned (2) If 4H or 5H control data was received in the unlocked state ACK not returned (3) If 0H, 4H, 5H or 6H control data was received in the locked ACK returned state from the unit that sent the lock request (4) If 0H, 4H, or 5H control data was received in the locked state ACK returned from other than the unit that sent the lock request (5) If 6H control data was received in the locked state from other ACK not returned than the unit that sent the lock request In all of the above cases, the acknowledgment of a slave status or lock request will cause the STATUSF flag (bit 4 of the ISR register) to be set and the status interrupt (INTIE2) to be generated. The generation timing is at the end of the control field parity bit (at the start of the ACK bit). However, if ACK is not returned, a NACK error is generated after the ACK bit, and communication is terminated. Figure 19-11. Interrupt Generation Timing (for (1), (3), and (4)) Control field IEBus sequence Control bits (4 bits) Parity bit (1 bit) Telegraph length field ACK bit (1 bit) Telegraph length bits (8 bits) INTIE2 Flag set by reception of 0H, 4H, 5H, 6H Flag reset by CPU processing STATUSF flag Internal NACK flag User's Manual U13850EJ6V0UD 567 CHAPTER 19 IEBus CONTROLLER (V850/SB2) Figure 19-12. Interrupt Generation Timing (for (2) and (5)) Control field IEBus sequence Control bits (4 bits) Parity bit (1 bit) ACK bit (1 bit) Terminated by communication error INTIE2 Flag set by reception of 0H, 4H, 5H, 6H Flag reset by CPU processing STATUSF flag Error generated by detection of NACK Internal NACK flag Because in (4) and (5) the communication was from other than the unit that sent the lock request while the IEBus was in the locked state, the start or communication complete interrupt (INTIE2) is not generated, even if the IEBus unit is the communication target. The STATUSF flag (bit 4 of the ISR register) is set and the status interrupt (INTIE2) generated, however, if a slave status or lock address request is acknowledged. Note that even if the same control data is received while the IEBus is in the locked state, the interrupt generation timing for INTIE2 differs depending on whether the master unit (3) or another unit (4) is requesting the locked state. Figure 19-13. Timing of INTIE2 Interrupt Generation in Locked State (for (4) and (5)) IEBus sequence Start Broadcasting Master address (12 + P) Slave address (12 + P + A) Telegraph Control DataNote lengthNote (4 + P + A) (8 + P + A) (8 + P + A) INTIE2 Status interrupt Note The telegraph length and data modes are not set in the case of (5) because ACK is not returned. Remark 568 P: Parity bit, A: ACK/NACK bit User's Manual U13850EJ6V0UD CHAPTER 19 IEBus CONTROLLER (V850/SB2) Figure 19-14. Timing of INTIE2 Interrupt Generation in Locked State (for (3)) IEBus sequence Start Broadcasting Master address (12 + P) Slave address (12 + P + A) Control Telegraph length Data (4 + P + A) (8 + P + A) (8 + P + A) INTIE2 Start interrupt Remark Status interrupt Communication complete interrupt P: Parity bit, A: ACK/NACK bit (6) IEBus telegraph length register (DLR) (a) When transmission unit ... Master transmission, slave transmission The data of this register is reflected in the data transmitted in the telegraph length field and indicates the number of bytes of the transmit data. This register must be set in advance before transmission. (b) When reception unit ... Master reception, slave reception The receive data in the telegraph length field transmitted from the transmission unit is written to this register. Remark The IEBus telegraph length register consists of a write register and a read register. Consequently, data written to this register cannot be read as is. The data that can be read is the data received during IEBus communication. User's Manual U13850EJ6V0UD 569 CHAPTER 19 After reset: 01H R/W 7 IEBus CONTROLLER (V850/SB2) Address: FFFFF3EAH 6 5 4 3 2 1 0 DLR Bit Setting Remaining number of communication data bytes 7 6 5 4 3 2 1 0 value 0 0 0 0 0 0 0 1 01H 1 byte 0 0 0 0 0 0 1 0 02H 2 bytes : : : : : : : : : 0 0 1 0 0 0 0 0 20H : : : : : : : : : 1 1 1 1 1 1 1 1 FFH 255 bytes 0 0 0 0 0 0 0 0 00H 256 bytes : 32 bytes : Cautions 1. If the master issues a request "0H, 4H, 5H, or 6H" to transmit a slave status and lock address (higher 4 bits, lower 8 bits), the contents of this register are set to "01H" by hardware; therefore, the CPU does not have to set this register. 2. In the case of defeat in a bus conflict and a slave status request is received from the unit that won, DLR is fixed to "01H". Therefore, if a re-request of the master follows, the appointed telegraph length must be set to DLR. 570 User's Manual U13850EJ6V0UD CHAPTER 19 IEBus CONTROLLER (V850/SB2) (7) IEBus data register (DR) The IEBus data register (DR) sets the communication data. Sets the communication data (8 bits) to bits 7 to 0. Remark The IEBus data register consists of a write register and a read register. Consequently, data written to this register cannot be read as is. The data that can be read is the data received during IEBus communication. (a) When transmission unit The data (1 byte) written to the IEBus data register (DR) is stored to the IEBus interface shift register of the IEBus. It is then output from the most significant bit, and an interrupt (INTIE1) is issued to the CPU each time 1 byte has been transmitted. If NACK is received after 1-byte data has been transferred during individual transfer, data is not transferred from DR to the shift register, and the same data is retransmitted. At this time, INTIE1 is not generated. INTIE1 is issued when the IEBus interface shift register stores the IEBus data register value. However, when the last byte and 32nd byte (the last byte of 1 communication frame) is stored in the shift register, INTIE1 is not issued. (b) When reception unit One byte of the data received by the shift register of the IEBus interface block is stored to this register. Each time 1 byte has been correctly received, an interrupt (INTIE1) is issued. When transmit/receive data is transferred to and from the IEBus data register, using DMA can reduce the CPU processing load. After reset: 00H 7 R/W Address: FFFFF3ECH 6 5 4 3 2 1 0 DR Cautions 1. If the next data is not in time while the transmission unit is set, an underrun occurs, and a communication error interrupt (INTIE2) occurs, stopping transmission. 2. When the IEBus is a receiving unit, if the reading of the data is too late for the next data reception timing, the unit will enter the overrun state. At this time, during individual communication reception, NACK will be returned at the acknowledge bit of the data field, and the master unit will be requested to retransmit the data. If an overrun error occurs during broadcasting communication, the communication error interrupt (INTIE2) is generated. User's Manual U13850EJ6V0UD 571 CHAPTER 19 IEBus CONTROLLER (V850/SB2) (8) IEBus unit status register (USR) After reset: 00H USR R Address: FFFFF3EEH 7 <6> <5> <4> <3> <2> 1 0 0 SLVRQ ARBIT ALLTRNS ACK LOCK 0 0 Slave request flag SLVRQ 0 No request from master to slave 1 Request from master to slave Arbitration result flag ARBIT 0 Arbitration win 1 Arbitration loss Broadcasting communication flag ALLTRNS 0 Individual communication status 1 Broadcasting communication status ACK transmission flag ACK 0 NACK transmitted 1 ACK transmitted Lock status flag LOCK 0 Unit unlocked 1 Unit locked (a) Slave request flag (SLVRQ)...Bit 6 A flag indicating whether there has been a slave request from the master. <Set/reset conditions> Set: When the unit is requested as a slave (if the received slave address and unit UAR match during individual communication reception, or if the higher 4 bits of the received slave address match or if the received slave address is FFFH during broadcasting communication reception), this flag is set by hardware when the acknowledge period of the slave address field starts. Reset: This flag is reset by hardware when the unit is not requested as a slave. The reset timing is the same as the set timing. If the unit is requested as a slave immediately after communication has been correctly received (when the SLVRQ bit is set), and if a parity error occurs in the slave address field for that communication, the flag is not reset. 572 User's Manual U13850EJ6V0UD CHAPTER 19 IEBus CONTROLLER (V850/SB2) (b) Arbitration result flag (ARBIT)...Bit 5 A flag that indicates the result of arbitration. <Set/reset conditions> Set: When the data output by the IEBus unit during the arbitration period does not match the bus line data. Reset: By the start bit timing. Cautions 1. The timing at which the arbitration result flag (ARBIT) is reset differs depending on whether the unit outputs a start bit. * If start bit is output: The flag is reset at the output start timing. * If start bit is not output: The flag is reset at the detection timing of the start bit (approx. 160 s after output) 2. The flag is reset at the detection timing of the start bit if the other unit outputs the start bit earlier and the unit does not output the start bit after the master request. (c) Broadcasting communication flag (ALLTRNS)...Bit 4 A flag indicating whether the unit is performing broadcasting communication. The contents of the flag are updated in the broadcast field of each frame. Except for initialization (reset) by system reset, the set/reset conditions vary depending on the receive data of the broadcast field bit. <Set/reset conditions> Set: When "broadcasting" is received by the broadcast field Reset: When "individual" is received by the broadcast field, or upon the input of a system reset. Caution The broadcast flag is updated regardless of whether IEBus is the communication target or not. Figure 19-15. Example of Broadcasting Communication Flag Operation IEBus sequence Start Broadcasting M11 M10 Start Individual M11 M10 Broadcasting communication flag Set Not reset by start bit Reset (d) ACK transmission flag (ACK)...Bit 3 A flag that indicates whether ACK has been transmitted in the ACK period of the ACK field when the IEBus is a receiving unit. The contents of the flag are updated in the ACK period of each frame. However, if the internal circuit is initialized by the occurrence of a parity error, etc., the contents are not updated in the ACK period of that field. User's Manual U13850EJ6V0UD 573 CHAPTER 19 IEBus CONTROLLER (V850/SB2) (e) Lock status flag (LOCK)...Bit 2 A flag that indicates whether the unit is locked. <Set/reset conditions> Set: When the communication end flag goes low level and the frame end flag goes high level after receipt of a lock specification (3H, 6H, AH, BH) in the control field. Reset: When the communication enable flag is cleared. When the communication end flag is set after receipt of a lock release (3H, 6H, AH, BH) in the control field. Caution Lock specification/release is not possible in broadcasting communication. In the lock status, individual communication from a unit other than the one that requests locking is not acknowledged. However, even communication from a unit other than the one that requests locking is acknowledged as long as the communication is a slave status request. 574 User's Manual U13850EJ6V0UD CHAPTER 19 IEBus CONTROLLER (V850/SB2) (9) IEBus interrupt status register (ISR) This register indicates the status when IEBus issues an interrupt. The ISR is read to generate an interrupt, after which the specified interrupt processing is carried out. Reset the ISR register after reading it. Until it is reset, the INTIE2 interrupt signal is not generated (nor held pending). To reset the ISR register, reset each flag, satisfying the reset conditions in Table 19-8. Table 19-8. Reset Conditions of Flags in ISR Register Flag Name Reset Condition Processing Example IEERR, STARTF, STATUSF Byte write operation of ISR register. Any value can be written. ISR = 00H, etc. ENDTRNS, ENDFRAM Set MSTRQ, ENSLVTX, or ENSLVRX flag. BCR register = 88H or ENSLVTX = 1, etc. Caution Even if 0 is written to the ENDTRNS or ENDFRAM flag by accessing the ISR register, these flags are not reset. Reset them as described above. Remark MSTRQ: Bit 6 of the IEBus control register (BCR) ENSLVTX: Bit 4 of the IEBus control register (BCR) ENSLVRX: Bit 3 of the IEBus control register (BCR) User's Manual U13850EJ6V0UD 575 CHAPTER 19 After reset: 00H ISR IEBus CONTROLLER (V850/SB2) R/W Address: FFFFF3F0H 7 <6> 0 IEERR IEERR <5> <4> <3> <2> STARTF STATUSF ENDTRNS ENDFRAM 1 0 0 0 Communication error flag (during communication) 0 No communication error 1 Communication error STARTF Start interrupt flag 0 Start interrupt does not occur 1 Start interrupt occurs STATUSF Status transmission flag (slave) 0 No slave status/lock address (higher 4 bits, lower 8 bits) transmission request 1 Slave status/lock address (higher 4 bits, lower 8 bits) transmission request ENDTRNS Communication end flag 0 Communication does not end after the number of bytes set in the telegraph length field have been transferred 1 Communication ends after the number of bytes set in the telegraph length field have been transferred ENDFRAM Frame end flag 0 The frame (transfer of the maximum number of bytes (32 bytes) prescribed by mode 1) does not end 1 The frame (transfer of the maximum number of bytes (32 bytes) prescribed by mode 1) ends Caution Each of IEERR, STARTF, STATUSF, ENDTRNS, and ENDFRAM are generation triggers for the interrupt request signal (INTIE2) (see Figure 19-16). Because of this, if any one of these interrupt triggers have been set, no new interrupt will be generated by a subsequent trigger. Clear the flag of the interrupt source by the interrupt processing program, before the next interrupt occurs. 576 User's Manual U13850EJ6V0UD CHAPTER 19 IEBus CONTROLLER (V850/SB2) (a) Communication error flag (IEERR)...Bit 6 A flag that indicates the detection of an error during communication. <Set/reset conditions> Set: The flag is set if a timing error, parity error (except in the data field), NACK reception (except in the data field), underrun error, or overrun error (that occurs during broadcasting communication reception) occurs. Reset: By software (b) Start interrupt flag (STARTF)...Bit 5 A flag that indicates whether the interrupt was in the ACK period of the slave address field. <Set/reset conditions> Set: In the slave address field, upon a master request. When IEBus is a slave unit, this flag is set upon a request from the master (only if it was a slave request in the locked state from the unit requesting a lock). Reset: By software (c) Status transmission flag (STATUSF)...Bit 4 A flag indicating that the transmission status is either the master to slave status, or the lock address (higher 4 bits, lower 8 bits), when IEBus is a slave unit. <Set/reset conditions> Set: When 0H, 4H, 5H, or 6H is received in the control field from the master when the IEBus is a slave unit. Reset: By software (d) Communication end flag (ENDTRANS)...Bit 3 A flag that indicates whether communication ends after the number of bytes set in the telegraph length field have been transferred. <Set/reset conditions> Set: When the value of the SCR counter is 0. Reset: When the MSTRQ, ENSLVTX, or ENSLVRX flag is set. (e) Frame end flag (ENDFRAM)...Bit 2 A flag that indicates whether communication ends after the maximum number of bytes (32 bytes) prescribed by mode 1 have been transferred. <Set/reset conditions> Set: When the value of the CCR counter is 0. Reset: When the MSTRQ, ENSLVTX, or ENSLVRX flag is set. User's Manual U13850EJ6V0UD 577 CHAPTER 19 IEBus CONTROLLER (V850/SB2) (f) Communication error triggers * Timing error Occurrence conditions: Occurs if the high/low level width of the communication bit has shifted from the prescribed value. Remark: The respective prescribed values are set in the bit processing block and monitored by the internal 8-bit timer. An interrupt is generated when a timing error occurs. * Parity error Occurrence conditions: Occurs if the generated parity and the received parity in each field do not match when IEBus is a receiving unit. Remark: During individual communication, an interrupt is generated if a parity error occurs in a field other than the data field. During broadcasting communication, an interrupt is generated even if a parity error occurs in the data field. Restriction: If there is a slave request that has lost in arbitration to a broadcast request, no interrupt is generated, even if a parity error occurs. * NACK reception error Occurrence conditions: This error occurs when NACK is received during the ACK period in each of the slave address, control, and telegraph length fields during individual communication, regardless of whether the unit is the master or a slave unit. A NACK reception error only occurs in individual communication. ACK and NACK are not discriminated in broadcasting communication. Remark: An interrupt is generated if NACK is received in a field other than the data field. * Underrun Occurrence conditions: Occurs during data transmission if there was insufficient time to write the next transmit data to the IEBus data register (DR) before ACK reception. Remark: An interrupt is generated if an underrun occurs. * Overrun Occurrence conditions: The data interrupt request (INTIE1) that stores each byte of data in the IEBus data register (DR), and the DR register is read by DMA or software. An overrun error occurs if this reading processing is late and its timing becomes that of the next data reception. Remark: In individual communication reception, an acknowledgment is not returned in the ACK period of this data, resulting in the retransmission of the data by the transmit unit. Consequently, the IEBus transfer counter (CCR) is decremented, whereas the IEBus communication success counter (SCR) is not. In broadcasting communication reception, reception is stopped by the occurrence of a communication error (INTIE2), at which time the DR register is not updated. The STATRX flag (bit 1 of the SSR register) also remains set (1) without generating INTIE1. The overrun state is released at the timing of the next data reception following the reading of DR. 578 User's Manual U13850EJ6V0UD CHAPTER 19 IEBus CONTROLLER (V850/SB2) (g) Overrun error - supplementary details (i) When the frame ends in the overrun state during individual communication reception If the DR register is not read after entering the overrun state and the retransmitted data reaches the maximum number of bytes (32 bytes), the frame end interrupt (INTIE2) is generated. The overrun state is maintained until the DR register is read after the end of the frame. (ii) If the next reception is started in the case of (i) above, or if the next reception is started without the DR register being read after the final data has been received, regardless of whether the communication is broadcasting or individual Even if communication to the IEBus unit starts in the overrun state, the cause of the overrun, NACK, is not returned in the ACK period of the slave address, control, or telegraph length field (the DR register is not updated). If the next communication is not to the IEBus unit, the DR register is not updated until it is read. Because the IEBus unit is not a communication target, the data interrupt (INTIE1) and communication error interrupt (INTIE2) are not generated. (iii) If the next transmission occurs in the overrun state The data to be transmitted next in the overrun state can be no more than 2 bytes long. Because the data request interrupt (INTIE1) is not generated, the transmit data cannot be set, resulting in an underrun error. Therefore, clear the overrun status before starting transmission. (iv) Overrun state release The overrun state can only be released by reading the DR register or by a system reset. Therefore, be sure to read DR in a communication error interrupt processing program. User's Manual U13850EJ6V0UD 579 CHAPTER 19 IEBus CONTROLLER (V850/SB2) (10)IEBus slave status register (SSR) This register indicates the communication status of the slave unit. After receiving a slave status transmission request from the master, the CPU reads this register, and writes a slave status to the IEBus data register (DR) to transmit the slave status. At this time, the telegraph length is automatically set to "01H" that setting of the IEBus telegraph length register (DLR) is not required (because it is preset by hardware). Bits 6 and 7 indicate the highest mode supported by the unit, and are fixed to "01H" (mode 1). After reset: 41H SSR R Address: FFFFF3F2H 7 6 5 <4> 3 0 1 0 STATSLV 0 STATSLV 0 Slave transmission stops 1 Slave transmission enabled Lock status flag 0 Unlock status 1 Lock status STATRX DR receive status 0 Receiving data not stored in DR 1 Receiving data stored in DR STATTX DR transmit status 0 Transmission data not stored in DR 1 Transmission data stored in DR (a) Slave transmission status flag (STATSLV)...Bit 4 Reflects the contents of slave transmission enable flag. (b) Lock status flag (STATLOCK)...Bit 2 Reflects the contents of locked flag. (c) DR reception status (STATRX)...Bit 1 This flag indicates the DR reception state. (d) DR transmission status (STATTX)...Bit 0 This flag indicates the DR transmission state. User's Manual U13850EJ6V0UD <1> STATLOCK STATRX Slave transmission status flag STATLOCK 580 <2> <0> STATTX CHAPTER 19 IEBus CONTROLLER (V850/SB2) (11)IEBus success count register (SCR) The IEBus success count register (SCR) indicates the number of remaining communication bytes. This register reads the count value of the counter that decrements the value set by the telegraph length register by ACK in the data field. When the count value has reached "00H", the communication end flag (ENDTRNS) of the IEBus interrupt status register (ISR) is set. After reset: 01H R Address: FFFFF3F4H 7 6 5 4 3 2 1 0 SCR Bit Setting Remaining number of communication data bytes 7 6 5 4 3 2 1 0 value 0 0 0 0 0 0 0 1 01H 1 byte 0 0 0 0 0 0 1 0 02H 2 bytes : : : : : : : : : 0 0 1 0 0 0 0 0 20H : : : : : : : : : 1 1 1 1 1 1 1 1 FFH 255 bytes 0 0 0 0 0 0 0 0 00H 0 byte (end of communication) : 32 bytes : or 256 bytesNote Note The actual hard counter consists of 9 bits. When "00H" is read, it cannot be judged whether the remaining number of communication data bytes is 0 (end of communication) or 256. Therefore, either the communication end flag is used, or if "00H" is read when the first interrupt occurs at the beginning of communication, the remaining number of communication data bytes is judged to be 256. User's Manual U13850EJ6V0UD 581 CHAPTER 19 IEBus CONTROLLER (V850/SB2) (12)IEBus communication count register (CCR) The IEBus communication count register (CCR) indicates the number of remaining bytes in the communication byte number specified in the communication mode. Bits 7 to 0 of the IEBus communication count register (CCR) indicate the number of transfer bytes. This register reads the count value of the counter that is preset to the maximum number of transmitted bytes (32 bytes) per frame specified in mode 1. Whereas SCR (IEBus communication success counter) is decremented during normal communication (ACK), CCR is decremented when 1 byte has been communicated, regardless of whether ACK or NACK. When the count value has reached "00H", the frame end flag (ENDFRAM) is set. The maximum number of transfer bytes of the preset value of mode 1 per frame is 20H (32 bytes). After reset: 20H R Address: FFFFF3F6H 7 6 5 4 3 2 1 0 CCR (13)IEBus clock selection register (IECLK) This register selects the clock of IEBus. The main clock frequencies that can be used are shown below. Main clock frequencies other than the following cannot be used. * 6.0 MHz/6.291 MHz * 12.0 MHz/12.582 MHz Remark More IEBus clock types can be selected for the PD703036H, 703036HY, 70F3036H, 70F3036HY, 703037H, 703037HY, 70F3037H, and 70F3037HY by setting in combination with the IEBus high-speed clock selection register (IEHCLK). After reset: 00H IECLK Address: FFFFF3F8H 7 6 5 4 3 2 1 0 0 0 0 0 0 0 0 IECS IECS 582 R/W IEBus clock selection 0 @ fXX = 6.0 MHz or fXX = 6.291 MHz 1 @ fXX = 12.0 MHz or fXX = 12.582 MHz User's Manual U13850EJ6V0UD CHAPTER 19 IEBus CONTROLLER (V850/SB2) (14)IEBus high-speed clock selection register (IEHCLK) This register selects the clock of IEBus. The main clock frequencies that can be used are shown below. Main clock frequencies other than the following cannot be used. * 6.0 MHz/6.291 MHz * 12.0 MHz/12.582 MHz * 18.0 MHz/18.873 MHz Caution The IEHCLK register is available only in the H versions of the V850/SB2 (PD703036H, 703036HY, 70F3036H, 70F3036HY, 703037H, 703037HY, 70F3037H, and 70F3037HY). After reset: 00H IEHCLK R/W Address: FFFFF3DEH 7 6 5 4 3 2 1 0 0 0 0 0 0 0 0 IECS1 IECS1 IECSNote 0 0 @ fXX = 6.0 MHz or fXX = 6.291 MHz 0 1 @ fXX = 12.0 MHz or fXX = 12.582 MHz 1 0 @ fXX = 18.0 MHz or fXX = 18.873 MHz 1 1 Setting prohibited IEBus clock selection Note Bit 0 of the IECLK register User's Manual U13850EJ6V0UD 583 CHAPTER 19 IEBus CONTROLLER (V850/SB2) 19.4 Interrupt Operations of IEBus Controller 19.4.1 Interrupt control block Interrupt request signal <1> Communication error IEERR <2> Start interrupt STARTF <3> Status communication STATUSF <4> End of communication ENDTRNS <5> End of frame ENDFRAM <6> Transmit data write request STATTX <7> Receive data read request STATRX 1 through 5 of the above interrupt requests are assigned to the interrupt status register (ISR). For details, refer to Table 19-9 Interrupt Source List. The configuration of the interrupt control block is illustrated below. Figure 19-16. Configuration of Interrupt Control Block IEERR STARTF STATUSF ENDTRNS ENDFRAM STATTX STATRX INTIE1 INTIE2 IEBus macro Interrupt control block V850/SB2 CPU Cautions 1. OR output of STATRX and STATTX is treated as a DMA transfer start signal (INTIE1). 2. OR output of IEERR, STARTF, STATUSF, ENDTRNS, and ENDFRAM is treated as a vector interrupt request signal (INTIE2) for V850/SB2. 584 User's Manual U13850EJ6V0UD CHAPTER 19 IEBus CONTROLLER (V850/SB2) 19.4.2 Interrupt source list The interrupt request signals of the internal IEBus controller in the V850/SB2 can be classified into vector interrupts and DMA transfer interrupts. These interrupt request signals can be specified through software manipulation. The interrupt sources are listed below. Table 19-9. Interrupt Source List Interrupt Source Condition of Generation Communication error Unit Field Timing error Master/slave All fields Parity error Reception Other than data (individual) CPU Processing after Generation of Interrupt Remark Undo communication processing Communication error is OR output of timing error, parity error, NACK reception, underrun error, and overrun error All fields (broadcasting) NACK reception Reception (Transmission) Other than data (individual) Underrun error Transmission Data Overrun error Reception Data (broadcasting) Master Slave/address Slave request judgment Contention judgment (If loses, remaster processing) Communication preparation processing Interrupt always occurs if loses in contention during master request Slave Slave/address Slave request judgment Communication preparation processing Generated only during slave request Status transmission Slave Control Refer to transmission processing example such as slave status. Interrupt occurs regardless of slave transmission enable flag Interrupt occurs if NACK is returned in the control field. End of communication Transmission Data DMA transfer end processing Set if SCR is cleared to 0 Reception Data DMA transfer end processing Receive data processing Transmission Data Retransmission preparation processing Reception Data Re-reception preparation processing Transmit data write Transmission Data Reading of transmit dataNote. Set after transfer transmission data to internal shift register This does not occur when the last data is transferred. Receive data read Reception Data Reading of received dataNote Set after normal data reception Start interrupt End of frame Set if CCR is cleared to 0 Note If DMA transfer or software manipulation is not executed. User's Manual U13850EJ6V0UD 585 CHAPTER 19 IEBus CONTROLLER (V850/SB2) 19.4.3 Communication error source processing list The following table shows the occurrence conditions of the communication errors (timing error, NACK reception error, overrun error, underrun error, and parity error), error processing by the internal IEBus controller, and examples of processing by software. Table 19-10. Communication Error Source Processing List (1/2) Timing Error Occurrence condition Broadcasting communication Unit status Reception Occurrence condition If bit specification timing is not correct Transmission Location of occurrence Other than data field Hardware processing * Reception stops. * INTIE2 occurs * To start bit waiting status Data field Other than data field Data field * Transmission stops. * INTIE2 occurs * To start bit waiting status Remark Communication between other units does not end. Individual communication Software processing * Error processing (such as retransmission request) * Error processing (such as retransmission request Hardware processing * * * * * Transmission stops. * INTIE2 occurs * To start bit waiting status Software processing * Error processing (such as retransmission request) Reception stops. INTIE2 occurs NACK is returned. To start bit waiting status * Error processing (such as retransmission request NACK Reception Error Occurrence condition Broadcasting communication Individual communication Unit status Reception Transmission Occurrence condition Unit NACK transmission Unit NACK transmission Location of occurrence Other than data field Other than data field Data field Data field Hardware processing - - - - - Software processing - - - - - Hardware processing * Reception stops. * INTIE2 does not occur. * Reception stops. * INTIE2 does not occur. * INTIE2 occurs. * Data * INTIE2 occurs. * Retransretransmitted mission * To start bit * To start bit by other unit is processing waiting status waiting status received. Software processing * Error processing (such as retransmission request) - * Error processing (such as retransmission request) Note Both ISR.6 (IEERR) and ISR.2 (ENDFRAM) are set to 1. To reset them, satisfy the conditions in Table 19-8. 586 NACK reception of data of 32nd byte User's Manual U13850EJ6V0UD - * INTIE2 occursNote. * To start bit waiting status * Error processing (such as retransmission request) CHAPTER 19 IEBus CONTROLLER (V850/SB2) Table 19-10. Communication Error Source Processing List (2/2) Overrun Error Occurrence condition Broadcasting communication Underrun Error Unit status Reception Transmission Occurrence condition DR cannot be read in time before the next data is received. DR cannot be written in time before the next data is transmitted. Location of occurrence Other than Data field data field Other than Data field data field Hardware processing - * Reception stops. * INTIE2 occurs. * To start bit waiting status - * Transmission stops. * INTIE2 occurs. * To start bit waiting status - * Error processing (such as retransmission request) - * Transmission stops. * INTIE2 occurs. * To start bit waiting status - * Error processing (such as retransmission request) Remarks 1. Communication between other units does not end. 2. Data cannot be received until the overrun status is cleared. Software processing - * DR is read and overrun status is cleared. * Error processing (such as retransmission request) Individual communication Hardware processing - * INTIE2 does not occur. * NACK is returned. * Data is retransmitted from other unit. Remark Data cannot be received until overrun status is cleared. Software processing - * DR is read and overrun status is cleared. * Error processing (such as retransmission request) Parity Error Occurrence condition Broadcasting communication Unit status Reception Transmission Occurrence condition Received data and received parity do not match. Location of occurrence Other than data field Hardware processing * Reception stops. * INTIE2 occurs. * To start bit waiting status Data field - Other than data field Data field - - Remark Communication between other units does not end. Individual communication Software processing * Error processing (such as retransmission) - - Hardware processing * Reception stops. * INTIE2 occurs. * To start bit waiting status Reception does not stop. INTIE2 does not occur. NACK is returned. Data retransmitted by other unit is received. - - Software processing * Error processing (such as retransmission request) - - - * * * * User's Manual U13850EJ6V0UD 587 CHAPTER 19 IEBus CONTROLLER (V850/SB2) 19.5 Interrupt Generation Timing and Main CPU Processing 19.5.1 Master transmission Initial preparation processing: Sets a unit address, slave address, control data, telegraph length, and the first byte of the transmit data. Communication start processing: Sets the bus control register (enables communication, master request, and slave reception). Figure 19-17. Master Transmission Approx. 624 s (mode 1) <1> Start Broadcasting M address P S address P A Control P A Telegraph length P A Data 1 Data n P Approx. 390 s (mode 1) <2> Data 1 P A Data 2 P A Data n - 1 P A A <1> Interrupt (INTIE2) occurrence Judgment of occurrence of error Error processing Slave reception processing Judgment of slave request (See 19.5.1 (1) Slave reception processing) Judgment of contention result Remaster request processing Error processing <2> Interrupt (INTIE2) occurrence Judgment of occurrence of error Judgment of end of communication End of communication processing Judgment of end of frame Re-communication processing (See 19.5.1 (3) Recommunication processing) Remarks 1. : Interrupt (INTIE1) occurrence (See 19.5.1 (2) Interrupt (INTIE1) occurrence) The transmit data of the second byte and those that follow are written to the IEBus data register (DR) by DMA transfer. At this time, the data transfer direction is RAM (memory) SFR (peripheral) 2. : An interrupt (INTIE1) does not occur. 3. n = Final number of data bytes 588 User's Manual U13850EJ6V0UD CHAPTER 19 IEBus CONTROLLER (V850/SB2) (1) Slave reception processing If a slave reception request is confirmed during vector interrupt processing, the data transfer direction of macro service must change from RAM (memory) ` SFR (peripheral) to SFR (peripheral) ` RAM (memory) until the first data is received. The maximum pending period of this data transfer direction changing processing is about 1040 s in communication mode 1. (2) Interrupt (INTIE1) occurrence If NACK is received from the slave in the data field, an interrupt (INTIE1) is not issued to the CPU, and the same data is retransmitted by hardware. If the transmit data is not written in time during the period of writing the next data, a communication error interrupt occurs due to occurrence of underrun, and communication ends midway. (3) Recommunication processing The vector interrupt processing in <2> judges whether the data has been correctly transmitted within one frame. If the data has not been correctly transmitted (if the number of data to be transmitted in one frame could not be transmitted), the data must be retransmitted in the next frame, or the remainder of the data must be transmitted. User's Manual U13850EJ6V0UD 589 CHAPTER 19 IEBus CONTROLLER (V850/SB2) 19.5.2 Master reception Before performing master reception, it is necessary to notify the slave of slave transmission units. Therefore, more than two communication frames are necessary for master reception. The slave unit prepares the transmit data, set (1) the slave transmission enable flag (ENSLVTX), and waits. Initial preparation processing: Sets a unit address, slave address, and control data. Communication start processing: Sets the bus control register (enables communication and master request). Figure 19-18. Master Reception Approx. 1014 s (mode 1) <1> Start Broadcasting M address P S address P A Control P A Telegraph length P A Data 1 Approx. 390 s (mode 1) <2> Data 1 P A Data 2 P A Data n - 1 P A Data n P <1> Interrupt (INTIE2) occurrence Judgment of occurrence of error Error processing Slave processing Remaster request processing Error processing Judgment of slave request Judgment of collision result <2> Interrupt (INTIE2) occurrence Judgment of occurrence of error Judgment of end of communication End of communication processing Judgment of end of frame Frame end processing (See 19.5.2 (2) Frame end processing) Remarks 1. : Interrupt (INTIE1) occurrence (See 19.5.2 (1) Interrupt (INTIE1) occurrence) The receive data stored to the IEBus data register (DR) is read by DMA transfer. At this time, the data transfer direction is SFR (peripheral) RAM (memory). 2. n = Final number of data bytes 590 User's Manual U13850EJ6V0UD A CHAPTER 19 IEBus CONTROLLER (V850/SB2) (1) Interrupt (INTIE1) occurrence If NACK is transmitted (hardware processing) in the data field, an interrupt (INTIE1) is not issued to the CPU, and the same data is retransmitted from the slave. If the receive data is not read in time until the next data is received, the hardware automatically transmits NACK. (2) Frame end processing The vector interrupt processing in <2> judges whether the data has been correctly received within one frame. If the data has not been correctly received (if the number of data to be received in one frame could not be received), a request to retransmit the data must be made to the slave in the next communication frame. User's Manual U13850EJ6V0UD 591 CHAPTER 19 IEBus CONTROLLER (V850/SB2) 19.5.3 Slave transmission Initial preparation processing: Sets a unit address, telegraph length, and the first byte of the transmit data. Communication start processing: Sets the bus control register (enables communication, slave transmission, and slave reception). Figure 19-19. Slave Transmission Approx. 624 s (mode 1) <1> Start Broadcasting M address P S address P A Control P A Telegraph length P A Data 1 Data n P Approx. 390 s (mode 1) <2> Data 1 P A Data 2 P A Data n - 1 P A A <1> Interrupt (INTIE2) occurrence Judgment of occurrence of error Error processing Error processing Judgment of slave request <2> Interrupt (INTIE2) occurrence Judgment of occurrence of error Judgment of end of communication End of communication processing Judgment of end of frame Frame end processing (See 19.5.3 (2) Frame end processing) Remarks 1. : Interrupt (INTIE1) occurrence (See 19.5.3 (1) Interrupt (INTIE1) occurrence). The transmit data of the second byte and those that follow are written to the IEBus data register (DR) by DMA transfer. At this time, the data transfer direction is RAM (memory) SFR (peripheral). 2. : An interrupt (INTIE1) does not occur. 3. : Interrupt (INTIE2) occurrence An interrupt occurs only when 0H, 4H, 5H, or 6H is received in the control field in the slave status (for the slave status response operation during locked, refer to 19.3.2 (5) IEBus control data register (CDR)). 4. n = Final number of data bytes 592 User's Manual U13850EJ6V0UD CHAPTER 19 IEBus CONTROLLER (V850/SB2) (1) Interrupt (INTIE1) occurrence If NACK is received from the master in the data field, an interrupt (INTIE1) is not issued to the CPU, and the same data is retransmitted by hardware. If the transmit data is not written in time during the period of writing the next data, a communication error interrupt occurs due to occurrence of underrun, and communication is abnormally ended. (2) Frame end processing The vector interrupt processing in <2> judges whether the data has been correctly transmitted within one frame. If the data has not been correctly transmitted (if the number of data to be transmitted in one frame could not be transmitted), the data must be retransmitted in the next frame, or the continuation of the data must be transmitted. User's Manual U13850EJ6V0UD 593 CHAPTER 19 IEBus CONTROLLER (V850/SB2) 19.5.4 Slave reception Initial preparation processing: Sets a unit address. Communication start processing: Sets the bus control register (enables communication, disables slave transmission, and enables slave reception). Figure 19-20. Slave Reception Approx. 1014 s (mode 1) <1> Start Broadcasting M address P S address P A Control P A Telegraph length P A Data 1 Data n P Approx. 390 s (mode 1) <2> Data 1 P A Data 2 P A Data n - 1 P A A <1> Interrupt (INTIE2) occurrence Judgment of occurrence of error Error processing Slave processing Error processing Judgment of slave request <2> Interrupt (INTIE2) occurrence Judgment of occurrence of error Judgment of end of communication End of communication processing Judgment of end of frame Frame end processing (See 19.5.4 (2) Frame end processing). Remarks 1. : Interrupt (INTIE1) occurrence (See 19.5.4 (1) Interrupt (INTIE1) occurrence). The receive data stored to the IEBus data register (DR) is read by DMA transfer. At this time, the data transfer direction is SFR (peripheral) RAM (memory). 2. n = Final number of data bytes 594 User's Manual U13850EJ6V0UD CHAPTER 19 IEBus CONTROLLER (V850/SB2) (1) Interrupt (INTIE1) occurrence If NACK is transmitted in the data field, an interrupt (INTIE1) is not issued to the CPU, and the same data is retransmitted from the master. If the receive data is not read in time until the next data is received, NACK is automatically transmitted. (2) Frame end processing The vector interrupt processing in <2> judges whether the data has been correctly received within one frame. User's Manual U13850EJ6V0UD 595 CHAPTER 19 IEBus CONTROLLER (V850/SB2) 19.5.5 Interval of occurrence of interrupt for IEBus control Each control interrupt must occur at each point of communication and perform the necessary processing until the next interrupt occurs. Therefore, the CPU must control the IEBus control block, taking the shortest time of this interrupt into consideration. The locations at which the following interrupts may occur are indicated by in the field where it may occur. does not mean that the interrupt occurs at each of the points indicated by . If an error interrupt (timing error, parity error, or ACK error) occurs, the IEBus internal circuit is initialized. As a result, the following interrupt does not occur in that communication frame. (1) Master transmission Figure 19-21. Master Transmission (Interval of Interrupt Occurrence) Start bit t1 Broadcasting Master address P T T Slave address T T P A Control A t3 P A T A T t2 Telegraph length P A T Data A P A U T t4 t5 Communication starts Data T Communication start interrupt P A Data Data P A A T U t4 End of communication End of frame Remarks 1. T: Timing error A: ACK error U: Underrun error : Data set interrupt (INTIE1) 2. End of frame occurs at the end of 32-byte data. (IEBus: at 6.29 MHz) Item 596 Symbol MIN. Unit Communication starts - timing error t1 Approx. 93 s Communication starts - communication start interrupt t2 Approx. 1282 s Communication start interrupt - timing error t3 Approx. 15 s Communication start interrupt - end of communication t4 Approx. 1012 s Transmission data request interrupt interval t5 Approx. 375 s User's Manual U13850EJ6V0UD CHAPTER 19 IEBus CONTROLLER (V850/SB2) (2) Master reception Figure 19-22. Master Reception (Interval of Interrupt Occurrence) Start bit t1 Broadcasting Master address T T P Slave address P A T T T t5 P A P A T Telegraph length A T Communication starts Data A t3 t2 A Control T P A Data P A P T t4 Communication start interrupt Data Data P A T A t4 End of communication End of frame Remarks 1. T: Timing error P: Parity error A: ACK error : Data set interrupt (INTIE1) 2. End of frame occurs at the end of 32-byte data. (IEBus: at 6.29 MHz) Item Symbol MIN. Unit Communication starts - timing error t1 Approx. 93 s Communication starts - communication start interrupt t2 Approx. 1282 s Communication start interrupt - timing error t3 Approx. 15 s Communication start interrupt - end of communication t4 Approx. 1012 s Receive data read interval t5 Approx. 375 s User's Manual U13850EJ6V0UD 597 CHAPTER 19 IEBus CONTROLLER (V850/SB2) (3) Slave transmission Figure 19-23. Slave Transmission (Interval of Interrupt Occurrence) Broadcasting Master address Start bit t1 T T P Slave address P A P T T t3 P Control T t2 Communication starts Data P A T Data U Telegraph length T P A t6 t4 T Communication start interrupt Data P A P A T Data A P A T U t5 t7 Status request P A A T t7 End of communication End of frame Remarks 1. T: Timing error P: Parity error A: ACK error U: Underrun error : Data set interrupt (INTIE1) 2. End of frame occurs at the end of 32-byte data. (IEBus: at 6.29 MHz) Item 598 Symbol MIN. Unit Communication starts - timing error t1 Approx. 96 s Communication starts - communication start interrupt t2 Approx. 1192 s Communication start interrupt - timing error t3 Approx. 15 s Communication start interrupt - status request t4 Approx. 225 s Transmission data request interrupt interval t5 Approx. 375 s Status request - timing error t6 Approx. 15 s Status request - end of communication t7 Approx. 787 s User's Manual U13850EJ6V0UD CHAPTER 19 IEBus CONTROLLER (V850/SB2) (4) Slave reception Figure 19-24. Slave Reception (Interval of Interrupt Occurrence) Start bit t1 Broadcasting Master address T T P Slave address P A T P T t2 Communication starts A Data T t5 P A O P Control A t3 PT T P A Telegraph length P A T P A Data P A T P P t4 Communication start interrupt Data Data T P A O A P t4 End of communication End of frame Remarks 1. T: Timing error P: Parity error A: ACK error O: Overrun error : Data set interrupt (INTIE1) 2. End of frame occurs at the end of 32-byte data. (IEBus: at 6.29 MHz) Item Symbol MIN. Unit Communication starts - timing error t1 Approx. 96 s Communication starts - communication start interrupt t2 Approx. 1192 s Communication start interrupt - timing error t3 Approx. 15 s Communication start interrupt - end of communication t4 Approx. 1012 s Receive data read interval t5 Approx. 375 s User's Manual U13850EJ6V0UD 599 CHAPTER 20 ELECTRICAL SPECIFICATIONS Absolute Maximum Ratings (TA = 25C, VSS = 0 V) Parameter Supply voltage Input voltage Symbol Analog reference input voltage Output current, low Output current, high Output voltage Operating ambient temperature 600 Unit VDD pin -0.5 to +7.0 V VPP Flash memory versions only, Note 1 -0.5 to +8.5 V AVDD AVDD pin -0.5 to +7.0 V BVDD BVDD pin -0.5 to +7.0 V EVDD EVDD pin -0.5 to +7.0 V AVSS AVSS pin -0.5 to +0.5 V BVSS BVSS pin -0.5 to +0.5 V EVSS EVSS pin -0.5 to +0.5 VI1 VIAN AVREF IOL IOH VO1 Note 2 (BVDD pin) Note 3, RESET (EVDD pin) V Note 5 V Note 5 V Note 5 V -0.5 to EVDD + 0.5 Note 4 (AVDD pin) -0.5 to AVDD + 0.5 AVREF pin -0.5 to AVDD + 0.5 Per pin 4.0 mA Total for P00 to P07, P10 to P15, P20 to P25 25 mA Total for P26, P27, P30 to P37, P100 to P107, P110 to P113 25 mA Total for P40 to P47, P90 to P96, CLKOUT 25 mA Total for P50 to P57, P60 to P65 25 mA Per pin -4.0 mA Total for P00 to P07, P10 to P15, P20 to P25 -25 mA Total for P26, P27, P30 to P37, P100 to P107, P110 to P113 -25 mA Total for P40 to P47, P90 to P96, CLKOUT -25 mA Total for P50 to P57, P60 to P65 -25 Note 2, CLKOUT (BVDD pin) VO2 Note 3 (EVDD pin) TA Normal operation mode Tstg V Note 5 -0.5 to BVDD + 0.5 mA Note 5 V Note 5 V -0.5 to BVDD + 0.5 -0.5 to EVDD + 0.5 -40 to +85 C Note 6 10 to +85 C Note 7 Flash memory programming mode -20 to +85 Mask ROM versions -65 to +150 C Flash memory versions -40 to +125 C Flash memory programming mode Storage temperature Ratings VDD VI2 Analog input voltage Conditions User's Manual U13850EJ6V0UD CHAPTER 20 ELECTRICAL SPECIFICATIONS Notes 1. Make sure that the following conditions of the VPP voltage application timing are satisfied when the flash memory is written. * When supply voltage rises VPP must exceed VDD 1 ms or more after VDD has reached the lower-limit value (4.0 V) of the operating voltage range (see a in the figure below). * When supply voltage drops VDD must be lowered 10 s or more after VPP falls below the lower-limit value (4.0 V) of the operating voltage range of VDD (see b in the figure below). VDD 4.0 V 0V a b VPP 4.0 V 0V 2. Ports 4, 5, 6, 9, and their alternate-function pins 3. Ports 0, 1, 2, 3, 10, 11, and their alternate-function pins 4. Ports 7, 8, and their alternate-function pins 5. Be sure not to exceed the absolute maximum ratings (MAX. value) of each supply voltage. 6. K rank products of the PD70F3033A, 70F3033AY and K and E rank products of the PD70F3035A, 70F3035AY (The rank is indicated by the letter appearing as the 5th digit from the left in the lot number.) 7. E rank products of the PD70F3033A and 70F3033AY, P rank products of the PD70F3035A and 70F3035AY, and the PD70F3032A, 70F3032AY, 70F3037A, 70F3037AY, 70F3030B, 70F3030BY, 70F3032B, 70F3032BY, 70F3033B, 70F3033BY, 70F3035B, 70F3035BY, 70F3036H, 70F3036HY, 70F3037H, and 70F3037HY (The rank is indicated by the letter appearing as the 5th digit from the left in the lot number.) Cautions 1. Do not directly connect the output (or I/O) pins of IC products to each other, or to VDD, VCC, and GND. Open-drain pins or open-collector pins, however, can be directly connected to each other. Direct connection of the output pins between an IC product and an external circuit is possible, if the output pins can be set to the high-impedance state and the output timing of the external circuit is designed to avoid output conflict. 2. Product quality may suffer if the absolute maximum rating is exceeded even momentarily for any parameter. That is, the absolute maximum ratings are rated values at which the product is on the verge of suffering physical damage, and therefore the product must be used under conditions that ensure that the absolute maximum ratings are not exceeded. The ratings and conditions indicated for DC characteristics and AC characteristics represent the quality assurance range during normal operation. User's Manual U13850EJ6V0UD 601 CHAPTER 20 ELECTRICAL SPECIFICATIONS Capacitance (TA = 25C, VDD = AVDD = BVDD = EVDD = VSS = AVSS = BVSS = EVSS = 0 V) Parameter Symbol Input capacitance CI I/O capacitance CIO Output capacitance CO Conditions MIN. TYP. MAX. Unit 15 pF 15 pF 15 pF fC = 1 MHz Unmeasured pins returned to 0 V Operating Conditions (1) Operating frequency Operating Frequency (fXX) VDD AVDD Note 1 Note 2 BVDD EVDD Remark Note 3 2 to 20 MHz (V850SB1) 4.0 to 5.5 V 4.5 to 5.5 V 4.0 to 5.5 V 4.0 to 5.5 V 4.0 to 5.5 V 2 to 17 MHz (V850/SB1) 4.0 to 5.5 V 4.5 to 5.5 V 4.0 to 5.5 V 3.0 to 5.5 V 3.0 to 5.5 V 2 to 19 MHz (H versions of V850/SB2) 4.0 to 5.5 V 4.5 to 5.5 V 4.0 to 5.5 V 4.0 to 5.5 V 4.0 to 5.5 V 2 to 17 MHz (H versions of V850/SB2) 4.0 to 5.5 V 4.5 to 5.5 V 4.0 to 5.5 V 3.0 to 5.5 V 3.0 to 5.5 V 2 to 13 MHz (A and B versions of V850/SB2) 4.0 to 5.5 V 4.5 to 5.5 V 4.0 to 5.5 V 3.0 to 5.5 V 3.0 to 5.5 V 32.768 kHz Other than IDLE mode 4.0 to 5.5 V 4.5 to 5.5 V 4.0 to 5.5 V 3.0 to 5.5 V 3.0 to 5.5 V - IDLE mode 3.5 to 5.5 V - 4.0 to 5.5 V 3.0 to 5.5 V 3.0 to 5.5 V Note 4 Notes 1. When A/D converter is used 2. When A/D converter is not used 3. In STOP mode (when only watch timer is operating), VDD = 3.5 to 5.5 V. Shifting to STOP mode or restoring from STOP mode must be performed at VDD = 4.0 V min. 4. Shifting to IDLE mode or restoring from IDLE mode must be performed at VDD = 4.0 V min. (2) CPU operating frequency Parameter CPU operating frequency Symbol fCPU Conditions TYP. MAX. Unit Main clock operation (V850/SB1) 0.25 20 MHz Main clock operation (H versions of V850/SB2) 0.25 19 MHz Main clock operation (A and B versions of V850/SB2) 0.25 13 MHz Subclock operation 602 MIN. User's Manual U13850EJ6V0UD 32.768 kHz CHAPTER 20 ELECTRICAL SPECIFICATIONS Recommended Oscillator (1) Main clock oscillator (TA = -40 to +85C) (a) Connection of ceramic resonator or crystal resonator X1 X2 Rf C2 Parameter Symbol Rd C1 Conditions MIN. TYP. MAX. Unit Oscillation frequency (V850/SB1) fXX 2 20 MHz Oscillation frequency (H versions of V850/SB2) fXX 2 19 MHz Oscillation frequency (A and B versions of V850/SB2) fXX 2 13 MHz Oscillation stabilization time - Upon reset release 219/fXX s - Upon STOP mode release Note s Note The TYP. value differs depending on the setting of the oscillation stabilization time select register (OSTS). Cautions 1. The main clock oscillator operates on the output voltage of the on-chip regulator (3.0 V/3.3 V (for details, refer to CHAPER 16 REGULATOR). External clock input is prohibited. 2. When using the main clock oscillator, wire as follows in the area enclosed by the broken lines in the above figure to avoid an adverse effect from wiring capacitance. * Keep the wiring length as short as possible. * Do not cross the wiring with the other signal lines. * Do not route the wiring near a signal line through which a high fluctuating current flows. * Always make the ground point of the oscillator capacitor the same potential as VSS. * Do not ground the capacitor to a ground pattern through which a high current flows. * Do not fetch signals from the oscillator. 3. Ensure that the duty of oscillation waveform is between 5.5 and 4.5. 4. Sufficiently evaluate the matching between the V850/SB1 and V850/SB2 devices and the resonator. User's Manual U13850EJ6V0UD 603 CHAPTER 20 (i) ELECTRICAL SPECIFICATIONS Murata Mfg. Co., Ltd.: Ceramic resonator (TA = -40 to +85C) Manufacturer Part Number Murata Mfg. CSTLS6M29G53-B0 Co., Ltd. (A, CSTCR6M29G53-R0 B versions of CSTLA12M5T55001-B0 V850/SB2) Oscillation Frequency fXX (MHz) 6.290 12.583 CSTCV12M5T54J01-R0 Murata Mfg. Co., Ltd. (V850/SB1) CSTLS8M00G56-B0 8.00 CSTCC8M00G56-R0 CSTLA12M5T55-B0 12.5 CSTCV12M5T54J-R0 CSALS16M0X55-B0 16.00 CSTCV16M0X51J-R0 CSTLS20M0X51-B0 20.00 CSTCW20M0X51-R0 Caution Recommended Circuit Constant Oscillation Voltage Range C1 (pF) C2 (pF) Rf (k) Rd (k) MIN. (V) MAX. (V) On-chip On-chip - 0 4.0 5.5 On-chip On-chip - 0 4.0 5.5 On-chip On-chip - 0 4.0 5.5 On-chip On-chip - 0 4.0 5.5 On-chip On-chip - 0 4.0 5.5 On-chip On-chip - 0 4.0 5.5 On-chip On-chip - 0 4.0 5.5 On-chip On-chip - 0 4.0 5.5 10 10 - 0 4.0 5.5 On-chip On-chip - 0 4.0 5.5 On-chip On-chip - 0 4.0 5.5 On-chip On-chip 22 k 0 4.0 5.5 This oscillator constant is a reference value based on evaluation under a specific environment by the resonator manufacturer. If optimization of oscillator characteristics is necessary in the actual application, apply to the resonator manufacturer for evaluation on the implementation circuit. The oscillation voltage and oscillation frequency indicate only oscillator characteristics. Use the V850/SB1 and V850/SB2 so that the internal operating conditions are within the specifications of the DC and AC characteristics. 604 User's Manual U13850EJ6V0UD CHAPTER 20 ELECTRICAL SPECIFICATIONS (2) Subclock oscillator (TA = -40 to +85C) (a) Connection of crystal resonator XT1 Parameter Symbol Oscillation frequency fXT Oscillation stabilization time - XT2 Conditions MIN. TYP. MAX. Unit 32 32.768 35 kHz 10 s Cautions 1. The subclock oscillator operates on the output voltage of the on-chip regulator (3.0 V/3.3 V (for details, refer to CHAPTER 16 REGULATOR)). External clock input is prohibited. 2. When using the subclock oscillator, wire as follows in the area enclosed by the broken lines in the above figure to avoid an adverse effect from wiring capacitance. * Keep the wiring length as short as possible. * Do not cross the wiring with the other signal lines. * Do not route the wiring near a signal line through which a high fluctuating current flows. * Always make the ground point of the oscillator capacitor the same potential as VSS. * Do not ground the capacitor to a ground pattern through which a high current flows. * Do not fetch signals from the oscillator. 3. Sufficiently evaluate the matching between the V850/SB1 and V850/SB2 devices and the resonator. User's Manual U13850EJ6V0UD 605 CHAPTER 20 ELECTRICAL SPECIFICATIONS DC Characteristics (TA = -40 to +85C, VDD = 4.0 to 5.5 V, BVDD = EVDD = 3.0 to 5.5 V, AVDD = 4.5 to 5.5 V (when A/D converter is used), AVDD = 4.0 to 5.5 V (when A/D converter is not used), VSS = AVSS = BVSS = EVSS = 0 V) Parameter Input voltage, high Symbol VIH1 VIH2 VIH3 Input voltage, low Output voltage, high VPP power supply voltage Note 1 Note 2 Note 3, RESET MIN. TYP. MAX. Unit 4.0 V BVDD 5.5 V 0.7BVDD BVDD V 3.0 V BVDD < 4.0 V 0.8BVDD BVDD V 4.0 V EVDD 5.5 V 0.7EVDD EVDD V 3.0 V EVDD < 4.0 V 0.8EVDD EVDD V 4.0 V EVDD 5.5 V 0.7EVDD EVDD V 3.0 V EVDD < 4.0 V 0.8EVDD EVDD V VIH4 Note 4 0.7AVDD AVDD V VIL1 Note 1 BVSS 0.3BVDD V VIL2 Note 2 EVSS 0.3EVDD V VIL3 Note 3, RESET EVSS 0.3EVDD V VIL4 Note 4 AVSS 0.3AVDD V VOH1 Note 1, CLKOUT 3.0 V BVDD 5.5 V, IOH = -100 A BVDD - 0.5 V 4.0 V BVDD 5.5 V, IOH = -3 mA BVDD - 1.0 V 3.0 V EVDD 5.5 V, IOH = -100 A EVDD - 0.5 V 4.0 V EVDD 5.5 V, IOH = -3 mA EVDD - 1.0 V VOH2 Output voltage, low Conditions VOL VPP1 Notes 2, 3 IOL = 3 mA, 3.0 V BVDD, EVDD 5.5 V 0.5 V IOL = 3 mA, 4.0 V BVDD, EVDD 5.5 V 0.4 V Normal operation (A and B versions of V850/SB2) 0 0.54 V Normal operation (V850/SB1 and H versions of V850/SB2) 0 0.6 V Input leakage current, high ILIH VI = VDD = BVDD = EVDD = AVDD 5 A Input leakage current, low ILIL VI = 0 V -5 A Output leakage current, high ILOH VO = VDD = BVDD = EVDD = AVDD 5 A Output leakage current, low ILOL VO = 0 V -5 A Pull-up resistor RL VIN = 0 V 100 k 10 30 Notes 1. Ports 4, 5, 6, 9, and their alternate-function pins 2. P11, P14, P21, P24, P34, P35, P110 to P113, and their alternate-function pins 3. P00 to P07, P10, P12, P13, P15, P20, P22, P23, P25 to P27, P30 to P33, P36, P37, P100 to P107, and their alternate-function pins 4. Ports 7, 8, and their alternate-function pins 606 User's Manual U13850EJ6V0UD CHAPTER 20 ELECTRICAL SPECIFICATIONS DC Characteristics (TA = -40 to +85C, VDD = 4.0 to 5.5 V, BVDD = EVDD = 3.0 to 5.5 V, AVDD = 4.5 to 5.5 V (when A/D converter is used), AVDD = 4.0 to 5.5 V (when A/D converter is not used), VSS = AVSS = BVSS = EVSS = 0 V) Parameter PD703030B, 703030BY, 703031A, 703031AY, 703031B, 703031BY, 703032A, 703032AY, 703032B, 703032BY, 703033A, 703033AY, 703033B, 703033BY, 703036H, 703036HY, 703037H, 703037HY Supply current PD703034A, 703034AY, 703034B, 703034BY, 703035A, 703035AY, 703035B, 703035BY, 703037A, 703037AY Symbol Conditions MIN. TYP. MAX. Unit Note 1 IDD1 In normal operation mode 25 40 mA IDD2 In HALT modeNote 1 10 20 mA IDD3 In IDLE modeNote 2 Watch timer operating 1 4 mA IDD4 In STOP mode Watch timer, subclock oscillator operating Note 3 70 A Subclock oscillator stopped, XT1 = VSS Note 4 70 A IDD5 In normal operation mode (subclock operation)Note 5 50 150 A IDD6 In IDLE mode (subclock operation)Note 5 13 70 A IDD1 In normal operation modeNote 6 15 25 mA Note 6 IDD2 In HALT mode 6 13 mA IDD3 In IDLE modeNote 7 Watch timer operating 1 4 mA IDD4 In STOP mode Watch timer, subclock oscillator operating Note 8 70 A Subclock oscillator stopped, XT1 = VSS Note 9 70 A IDD5 In normal operation mode (subclock operation)Note 5 50 150 A IDD6 In IDLE mode (subclock operation)Note 5 13 70 A Notes 1. fCPU = fXX = 20 MHz, all peripheral functions operating (fXX = 19 MHz in the PD703036H, 703036HY, 703037H, and 703037HY) 2. fXX = 20 MHz (fXX = 19 MHz in the PD703036H, 703036HY, 703037H, and 703037HY) 3. IDD4 = 13 A (PD703031A, 703031AY, 703032A, 703032AY, 703033A, 703033AY) IDD4 = 10 A (PD703030B, 703030BY, 703031B, 703031BY, 703032B, 703032BY, 703033B, 703033BY, 703036H, 703036HY, 703037H, 703037HY) 4. IDD4 = 8 A (PD703031A, 703031AY, 703032A, 703032AY, 703033A, 703033AY) IDD4 = 5 A (PD703030B, 703030BY, 703031B, 703031BY, 703032B, 703032BY, 703033B, 703033BY, 703036H, 703036HY, 703037H, 703037HY) 5. fCPU = fXT = 32.768 kHz, main clock oscillator stopped 6. fCPU = fXX = 13 MHz, all peripheral functions operating 7. fXX = 13 MHz 8. IDD4 = 13 A (PD703034A, 703034AY, 703035A, 703035AY, 703037A, 703037AY) IDD4 = 10 A (PD703034B, 703034BY, 703035B, 703035BY) 9. IDD4 = 8 A (PD703034A, 703034AY, 703035A, 703035AY, 703037A, 703037AY) IDD4 = 5 A (PD703034B, 703034BY, 703035B, 703035BY) Remark TYP. values are reference values for when TA = 25C, VDD = BVDD = EVDD = AVDD = 5.0 V. The current consumed by the output buffer is not included. User's Manual U13850EJ6V0UD 607 CHAPTER 20 ELECTRICAL SPECIFICATIONS DC Characteristics (TA = -40 to +85C, VDD = 4.0 to 5.5 V, BVDD = EVDD = 3.0 to 5.5 V, AVDD = 4.5 to 5.5 V (when A/D converter is used), AVDD = 4.0 to 5.5 V (when A/D converter is not used), VSS = AVSS = BVSS = EVSS = 0 V) Parameter Symbol PD70F3030B, 70F3030BY, IDD1 70F3032A, 70F3032AY, 70F3032B, 70F3032BY, 70F3033A, 70F3033AY, 70F3033B, 70F3033BY, IDD2 70F3036H, 70F3036HY, 70F3037H, 70F3037HY Supply current Conditions MIN. In normal operation modeNote 1 Note 1 In HALT mode TYP. MAX. Unit Note 2 33 60 mA Note 3 37 65 mA Note 4 42 70 mA Note 2 10 20 mA Note 3 12 24 mA Note 4 14 28 mA IDD3 In IDLE modeNote 5 Watch timer operating 1 4 mA IDD4 In STOP mode Watch timer, subclock oscillator operating Note 6 100 A Subclock oscillator stopped, XT1 = VSS Note 7 100 A In normal operation mode Notes 2, 3 (subclock operation)Note 8 Note 4 200 600 A 300 900 A In IDLE mode (subclock operation)Note 8 Notes 2, 3 90 180 A Note 4 170 340 A IDD5 IDD6 Notes 1. fCPU = fXX = 20 MHz, all peripheral functions operating (fXX = 19 MHz in the PD70F3036H, 70F3036HY, 70F3037H, and 70F3037HY) 2. PD70F3033A, 70F3033AY, 70F3033B, 70F3033BY 3. PD70F3030B, 70F3030BY, 70F3036H, 70F3036HY 4. PD70F3032A, 70F3032AY, 70F3032B, 70F3032BY, 70F3037H, 70F3037HY 5. fXX = 20 MHz (fXX = 19 MHz in the PD70F3036H, 70F3036HY, 70F3037H, and 70F3037HY) 6. IDD4 = 13 A (PD70F3032A, 70F3032AY, 70F3033A, 70F3033AY) IDD4 = 10 A (PD70F3030B, 70F3030BY, 70F3032B, 70F3032BY, 70F3033B, 70F3033BY, 70F3036H, 70F3036HY, 70F3037H, 70F3037HY) 7. IDD4 = 8 A (PD70F3032A, 70F3032AY, 70F3033A, 70F3033AY) IDD4 = 5 A (PD70F3030B, 70F3030BY, 70F3032B, 70F3032BY, 70F3033B, 70F3033BY, 70F3036H, 70F3036HY, 70F3037H, 70F3037HY) 8. fCPU = fXT = 32.768 kHz, main clock oscillator stopped Remark TYP. values are reference values for when TA = 25C, VDD = BVDD = EVDD = AVDD = 5.0 V. The current consumed by the output buffer is not included. 608 User's Manual U13850EJ6V0UD CHAPTER 20 ELECTRICAL SPECIFICATIONS DC Characteristics (TA = -40 to +85C, VDD = 4.0 to 5.5 V, BVDD = EVDD = 3.0 to 5.5 V, AVDD = 4.5 to 5.5 V (when A/D converter is used), AVDD = 4.0 to 5.5 V (when A/D converter is not used), VSS = AVSS = BVSS = EVSS = 0 V) Parameter Symbol PD70F3035A, 70F3035AY, IDD1 70F3035B, 70F3035BY, 70F3037A, 70F3037AY IDD2 Supply current Conditions MIN. TYP. MAX. Unit In normal operation modeNote 1 Note 2 25 48 mA Note 3 30 58 mA In HALT modeNote 1 Note 2 7 15 mA Note 3 9 20 mA IDD3 In IDLE modeNote 4 Watch timer operating 1 4 mA IDD4 In STOP mode Watch timer, subclock oscillator operating Note 5 100 A Subclock oscillator stopped, XT1 = VSS Note 6 100 A IDD5 IDD6 In normal operation mode (subclock operation)Note 7 Note 2 200 600 A Note 3 300 900 A In IDLE mode (subclock operation)Note 7 Note 2 90 180 A Note 3 170 340 A Notes 1. fCPU = fXX = 13 MHz, all peripheral functions operating 2. PD70F3035A, 70F3035AY, 70F3035B, 70F3035BY 3. PD70F3037A, 70F3037AY 4. fXX = 13 MHz 5. IDD4 = 13 A (PD70F3035A, 70F3035AY, 70F3037A, 70F3037AY) IDD4 = 10 A (PD70F3035B, 70F3035BY) 6. IDD4 = 8 A (PD70F3035A, 70F3035AY, 70F3037A, 70F3037AY) IDD4 = 5 A (PD70F3035B, 70F3035BY) 7. fCPU = fXT = 32.768 kHz, main clock oscillator stopped Remark TYP. values are reference values for when TA = 25C, VDD = BVDD = EVDD = AVDD = 5.0 V. The current consumed by the output buffer is not included. User's Manual U13850EJ6V0UD 609 CHAPTER 20 ELECTRICAL SPECIFICATIONS Data Retention Characteristics (TA = -40 to +85C, VSS = AVSS = BVSS = EVSS = 0 V) Parameter Data retention voltage Data retention current Symbol VDDDR IDDDR Conditions MAX. Unit STOP mode (all functions not operating) TA = -40 to +85C Note 1 2.7 5.5 V STOP mode (all functions not operating) TA = -40 to +45C 2.5Note 1 5.5 V STOP mode (all functions not operating) TA = -10 to +45C 2.0Note 1 5.5 V VDD = VDDDR, XT1 = VSS (Subclock stopped) MIN. TYP. Note 2 5 70 A Note 3 8 70 A Flash memory Note 4 versions Note 5 5 100 A 8 100 A Mask ROM versions Power supply voltage rise time tRVD 200 s Power supply voltage fall time tFVD 200 s Power supply voltage hold time (from STOP mode setting) tHVD 0 ms STOP mode release signal input time tDREL 0 ms Data retention high-level input voltage VIHDR All input ports 0.9VDDDR VDDDR V Data retention low-level input voltage VILDR All input ports 0 0.1VDDDR V Notes 1. In STOP mode (when only watch timer is operating), VDD = 3.5 to 5.5 V. Shifting to STOP mode or restoring from STOP mode must be performed at VDD = 4.0 V min. 2. PD703030B, 703030BY, 703031B, 703031BY, 703032B, 703032BY, 703033B, 703033BY, 703034B, 703034BY, 703035B, 703035BY, 703036H, 703036HY, 703037H, 703037HY 3. PD703031A, 703031AY, 703032A, 703032AY, 703033A, 703033AY, 703034A, 703034AY, 703035A, 703035AY, 703037A, 703037AY 4. PD70F3030B, 70F3030BY, 70F3032B, 70F3032BY, 70F3033B, 70F3033BY, 70F3035B, 70F3035BY, 70F3036H, 70F3036HY, 70F3037H, 70F3037HY 5. PD70F3032A, 70F3032AY, 70F3033A, 70F3033AY, 70F3035A, 70F3035AY, 70F3037A, 70F3037AY 610 User's Manual U13850EJ6V0UD CHAPTER 20 Remark ELECTRICAL SPECIFICATIONS TYP. values are reference values for when TA = 25C. Setting STOP mode 4.0 VNote V DDDR VDD tFVD tRVD tHVD tDREL V IHDR RESET (input) V IHDR Stop mode release interrupt (NMI, etc.) (Release by falling edge) Stop mode release interrupt (NMI, etc.) (Release by rising edge) V ILDR Note VDD = 4.0 V indicates the minimum operating voltage of the V850/SB1 and V850/SB2. User's Manual U13850EJ6V0UD 611 CHAPTER 20 ELECTRICAL SPECIFICATIONS AC Characteristics (TA = -40 to +85C, VDD = 4.0 to 5.5 V, BVDD = EVDD = 3.0 to 5.5 V, AVDD = 4.5 to 5.5 V (when A/D converter is used), AVDD = 4.0 to 5.5 V (when A/D converter is not used), VSS = AVSS = BVSS = EVSS = 0 V) AC Test Input Measurement Point (VDD: EVDD, BVDD, AVDD) VDD VIH Measurement points Input signal 0V VIH VIL VIL AC Test Output Measurement Points (VDD: EVDD, BVDD) VDD VOH VOH Output signal 0V Measurement points VOL VOL Load Conditions DUT (Device under test) CL = 50 pF Caution If the load capacitance exceeds 50 pF due to the circuit configuration, bring the load capacitance of the device to 50 pF or less by inserting a buffer or by some other means. 612 User's Manual U13850EJ6V0UD CHAPTER 20 ELECTRICAL SPECIFICATIONS (1) Clock timing (a) TA = -40 to +85C, VDD = BVDD = 4.0 to 5.5 V, EVDD = 3.0 to 5.5 V, VSS = AVSS = BVSS = EVSS = 0 V Parameter CLKOUT output cycle Symbol <1> tCYK Conditions MIN. MAX. 50 ns 31.2 s H versions of V850/SB2 52.6 ns 31.2 s A and B versions of V850/SB2 76.9 ns 31.2 s V850/SB1 Unit CLKOUT high-level width <2> tWKH 0.4tCYK - 12 ns CLKOUT low-level width <3> tWKL 0.4tCYK - 12 ns CLKOUT rise time <4> tKR 12 ns CLKOUT fall time <5> tKF 12 ns (b) TA = -40 to +85C, VDD = 4.0 to 5.5 V, BVDD = 3.0 to 4.0 V, EVDD = 3.0 to 5.5 V, VSS = AVSS = BVSS = EVSS = 0 V Parameter CLKOUT output cycle Symbol <1> tCYK Conditions MIN. MAX. V850/SB1 58.8 ns 31.2 s H versions of V850/SB2 58.8 ns 31.2 s A and B versions of V850/SB2 76.9 ns 31.2 s Unit CLKOUT high-level width <2> tWKH 0.4tCYK - 15 ns CLKOUT low-level width <3> tWKL 0.4tCYK - 15 ns CLKOUT rise time <4> tKR 15 ns CLKOUT fall time <5> tKF 15 ns <1> <2> <3> CLKOUT (output) <4> User's Manual U13850EJ6V0UD <5> 613 CHAPTER 20 ELECTRICAL SPECIFICATIONS (2) Output waveform (other than port 4, port 5, port 6, port 9, and CLKOUT) (TA = -40 to +85C, VDD = 4.0 to 5.5 V, BVDD = EVDD = 3.0 to 5.5 V, VSS = BVSS = EVSS = 0 V) Parameter Symbol Conditions MIN. MAX. Unit Output rise time <6> tOR 20 ns Output fall time <7> tOF 20 ns <7> <6> Output signal (3) Reset timing (TA = -40 to +85C, VDD = 4.0 to 5.5 V, BVDD = EVDD = 3.0 to 5.5 V, VSS = AVSS = BVSS = EVSS = 0 V) Parameter Symbol Conditions MIN. MAX. Unit RESET pin high-level width <8> tWRSH 500 ns RESET pin low-level width <9> tWRSL 500 ns <8> RESET (input) 614 User's Manual U13850EJ6V0UD <9> CHAPTER 20 ELECTRICAL SPECIFICATIONS (4) Bus timing (a) Clock asynchronous (TA = -40 to +85C, VDD = BVDD = 4.0 to 5.5 V, EVDD = 3.0 to 5.5 V, VSS = AVSS = BVSS = EVSS = 0 V) Parameter Symbol Conditions MIN. MAX. Unit Address setup time (to ASTB) <10> tSAST 0.5T - 16 ns Address hold time (from ASTB) <11> tHSTA 0.5T - 15 ns Address float delay time from DSTB <12> tFDA 0 ns Data input setup time from address <13> tSAID (2 + n)T - 40 ns Data input setup time from DSTB <14> tSDID (1 + n)T - 40 ns Delay time from ASTB to DSTB <15> tDSTD 0.5T - 15 ns Data input hold time (from DSTB) <16> tHDID 0 ns Address output time from DSTB <17> tDDA (1 + i)T - 15 ns Delay time from DSTB to ASTB <18> tDDST1 0.5T - 15 ns Delay time from DSTB to ASTB <19> tDDST2 (1.5 + i)T - 15 ns DSTB low-level width <20> tWDL (1 + n)T - 22 ns ASTB high-level width <21> tWSTH T - 15 ns Data output time from DSTB <22> tDDOD Data output setup time (to DSTB) <23> tSODD (1 + n)T - 25 ns Data output hold time (from DSTB) <24> tHDOD T - 20 ns WAIT setup time (to address) <25> tSAWT1 n1 1.5T - 40 ns <26> tSAWT2 n1 (1.5 + n)T - 40 ns <27> tHAWT1 n1 (0.5 + n)T ns <28> tHAWT2 n1 (1.5 + n)T ns <29> tSSTWT1 n1 T - 32 ns <30> tSSTWT2 n1 (1 + n)T - 32 ns <31> tHSTWT1 n1 nT ns <32> tHSTWT2 n1 (1 + n)T ns HLDRQ high-level width <33> tWHQH T + 10 ns HLDAK low-level width <34> tWHAL T - 15 ns Bus output delay time from HLDAK <35> tDHAC -6 ns Delay time from HLDRQ to HLDAK <36> tDHQHA1 Delay time from HLDRQ to HLDAK <37> tDHQHA2 WAIT hold time (from address) WAIT setup time (to ASTB) WAIT hold time (from ASTB) 10 0.5T ns (2n + 7.5)T + 25 ns 1.5T + 25 ns Remarks 1. T = 1/fCPU (fCPU: CPU operating clock frequency) 2. n: Number of wait clocks inserted in the bus cycle. The sampling timing changes when a programmable wait is inserted. 3. i: Number of idle states inserted after a read cycle (0 or 1). 4. The values in the above specifications are values for when clocks with a 5:5 duty ratio are input from X1. User's Manual U13850EJ6V0UD 615 CHAPTER 20 ELECTRICAL SPECIFICATIONS (b) Clock asynchronous (TA = -40 to +85C, VDD = 4.0 to 5.5 V, BVDD = 3.0 to 4.0 V, EVDD = 3.0 to 5.5 V, VSS = AVSS = BVSS = EVSS = 0 V) Parameter Symbol Address setup time (to ASTB) <10> tSAST Address hold time (from ASTB) <11> tHSTA Conditions MIN. MAX. Unit 0.5T - 20 ns Note 1 0.5T - 20 ns Note 2 0.5T - 22 ns Address float delay time from DSTB <12> tFDA 0 ns Data input setup time from address <13> tSAID (2 + n)T - 50 ns Data input setup time from DSTB <14> tSDID (1 + n)T - 50 ns Delay time from ASTB to DSTB <15> tDSTD Data input hold time (from DSTB) <16> tHDID 0 ns Address output time from DSTB <17> tDDA (1 + i)T - 15 ns Delay time from DSTB to ASTB <18> tDDST1 0.5T - 15 ns Delay time from DSTB to ASTB <19> tDDST2 (1.5 + i)T - 15 ns DSTB low-level width <20> tWDL (1 + n)T - 35 ns ASTB high-level width <21> tWSTH T - 15 ns Data output time from DSTB <22> tDDOD Data output setup time (to DSTB) <23> tSODD 0.5T - 15 ns 10 (1 + n)T - 35 ns ns Data output hold time (from DSTB) <24> tHDOD WAIT setup time (to address) <25> tSAWT1 n1 1.5T - 55 ns <26> tSAWT2 n1 (1.5 + n)T - 55 ns <27> tHAWT1 n1 (0.5 + n)T ns <28> tHAWT2 n1 (1.5 + n)T ns <29> tSSTWT1 n1 T - 45 ns <30> tSSTWT2 n1 (1 + n)T - 45 ns <31> tHSTWT1 n1 nT n1 WAIT hold time (from address) WAIT setup time (to ASTB) WAIT hold time (from ASTB) T - 25 ns ns <32> tHSTWT2 (1 + n)T ns HLDRQ high-level width <33> tWHQH T + 10 ns HLDAK low-level width <34> tWHAL T - 25 ns Bus output delay time from HLDAK <35> tDHAC -6 ns Delay time from HLDRQ to HLDAK <36> tDHQHA1 Delay time from HLDRQ to HLDAK <37> tDHQHA2 0.5T (2n + 7.5)T + 25 ns 1.5T + 25 ns Notes 1. PD703031A, 703031AY, 703031B, 703031BY, 703033A, 703033AY, 703033B, 703033BY, 703034A, 703034AY, 703034B, 703034BY, 703035A, 703035AY, 703035B, 703035BY, 70F3033A, 70F3033AY, 70F3033B, 70F3033BY, 70F3035A, 70F3035AY, 70F3035B, 70F3035BY 2. PD703030B, 703030BY, 703032A, 703032AY, 703032B, 703032BY, 703036H, 703036HY, 703037A, 703037AY, 703037H, 703037HY, 70F3030B, 70F3030BY, 70F3032A, 70F3032AY, 70F3032B, 70F3032BY, 70F3036H, 70F3036HY, 70F3037A, 70F3037AY, 70F3037H, 70F3037HY Remarks 1. T = 1/fCPU (fCPU: CPU operating clock frequency) 2. n: Number of wait clocks inserted in the bus cycle. The sampling timing changes when a programmable wait is inserted. 3. i: Number of idle states inserted after a read cycle (0 or 1). 4. The values in the above specifications are values for when clocks with a 5:5 duty ratio are input from X1. 616 User's Manual U13850EJ6V0UD CHAPTER 20 ELECTRICAL SPECIFICATIONS (c) Clock synchronous (TA = -40 to +85C, VDD = BVDD = 4.0 to 5.5 V, EVDD = 3.0 to 5.5 V, VSS = AVSS = BVSS = EVSS = 0 V) Parameter Symbol Conditions MIN. MAX. Unit Delay time from CLKOUT to address <38> tDKA 0 19 ns Delay time from CLKOUT to address float <39> tFKA -12 10 ns Delay time from CLKOUT to ASTB <40> tDKST 0 19 ns Delay time from CLKOUT to DSTB <41> tDKD 0 19 ns Data input setup time (to CLKOUT) <42> tSIDK 20 ns Data input hold time (from CLKOUT) <43> tHKID 5 ns Data output delay time from CLKOUT <44> tDKOD WAIT setup time (to CLKOUT) <45> tSWTK 20 ns WAIT hold time (from CLKOUT) <46> tHKWT 5 ns HLDRQ setup time (to CLKOUT) <47> tSHQK 20 ns HLDRQ hold time (from CLKOUT) <48> tHKHQ 5 ns Delay time from CLKOUT to address float (during bus hold) <49> tDKF 19 ns Delay time from CLKOUT to HLDAK <50> tDKHA 19 ns 19 ns Remark The values in the above specifications are values for when clocks with a 5:5 duty ratio are input from X1. (d) Clock synchronous (TA = -40 to +85C, VDD = 4.0 to 5.5 V, BVDD = 3.0 to 4.0 V, EVDD = 3.0 to 5.5 V, VSS = AVSS = BVSS = EVSS = 0 V) Parameter Symbol Conditions MIN. MAX. Unit Delay time from CLKOUT to address <38> tDKA 0 22 ns Delay time from CLKOUT to address float <39> tFKA -16 10 ns Delay time from CLKOUT to ASTB <40> tDKST 0 19 ns Delay time from CLKOUT to DSTB <41> tDKD 0 22 ns Data input setup time (to CLKOUT) <42> tSIDK 20 ns Data input hold time (from CLKOUT) <43> tHKID 5 ns Data output delay time from CLKOUT <44> tDKOD WAIT setup time (to CLKOUT) <45> tSWTK 24 ns WAIT hold time (from CLKOUT) <46> tHKWT 5 ns HLDRQ setup time (to CLKOUT) <47> tSHQK 24 ns HLDRQ hold time (from CLKOUT) <48> tHKHQ 5 ns Delay time from CLKOUT to address float (during bus hold) <49> tDKF 19 ns Delay time from CLKOUT to HLDAK <50> tDKHA 19 ns 22 ns Remark The values in the above specifications are values for when clocks with a 5:5 duty ratio are input from X1. User's Manual U13850EJ6V0UD 617 CHAPTER 20 ELECTRICAL SPECIFICATIONS (e) Read cycle (CLKOUT synchronous/asynchronous, 1 wait) T1 T2 TW T3 CLKOUT (output) <38> A1 to A15 (output) A16 to A21 (output) Note (output) <42> <13> <43> <39> AD0 to AD15 (I/O) Address Data <40> <10> <11> <16> <40> ASTB (output) <21> <41> <41> <18> <17> <19> <12> <15> <14> DSTB, RD (output) <29><45> <46> <20> <45> <31> <30> <32> WAIT (input) <25> <27> <26> <28> Note R/W, UBEN, LBEN Remarks 1. The broken lines indicate high impedance. 2. WRL and WRH are high level. 618 User's Manual U13850EJ6V0UD <46> CHAPTER 20 ELECTRICAL SPECIFICATIONS (f) Write cycle (CLKOUT synchronous/asynchronous, 1 wait) T1 T2 TW T3 CLKOUT (output) <38> A1 to A15 (output) A16 to A21 (output) Note (output) <44> AD0 to AD15 (I/O) Address Data <40> <10> <11> <40> ASTB (output) <21> <41> <41> <18> <22> <15> <24> <23> DSTB, WRL, WRH (output) <29><45> <46> <20> <45> <46> <31> <30> <32> WAIT (input) <25> <27> <26> <28> Note R/W, UBEN, LBEN Remarks 1. The broken lines indicate high impedance. 2. RD is high level. User's Manual U13850EJ6V0UD 619 CHAPTER 20 ELECTRICAL SPECIFICATIONS (g) Bus hold timing TH TH TH TH TI CLKOUT (output) <47> <47> <48> <33> HLDRQ (input) <50> <50> <37> <36> HLDAK (output) <34> <49> A16 to A21 (output) Note (output) A1 to A15 (output) AD0 to AD15 (I/O) Data ASTB (output) DSTB, RD (output) WRL, WRH (output) Note R/W, UBEN, LBEN Remark 620 The broken lines indicate high impedance. User's Manual U13850EJ6V0UD <35> CHAPTER 20 ELECTRICAL SPECIFICATIONS (5) Interrupt timing (TA = -40 to +85C, VDD = 4.0 to 5.5 V, BVDD = EVDD = 3.0 to 5.5 V, VSS = AVSS = BVSS = EVSS = 0 V) Parameter Symbol Conditions MIN. MAX. Unit NMI high-level width <51> tWNIH 500 ns NMI low-level width <52> tWNIL 500 ns INTPn high-level width <53> tWITH 500 ns 3T + 20 ns 3Tsmp + 20 ns 500 ns 3T + 20 ns 3Tsmp + 20 ns n = 0 to 3, analog noise elimination n = 4, 5, digital noise elimination n = 6, digital noise elimination INTPn low-level width <54> tWITL n = 0 to 3, analog noise elimination n = 4, 5, digital noise elimination n = 6, digital noise elimination Remarks 1. T = 1/fXX 2. Tsmp = Noise elimination sampling clock cycle <51> <52> <53> <54> NMI (input) INTPn (input) Remark n = 0 to 6 User's Manual U13850EJ6V0UD 621 CHAPTER 20 ELECTRICAL SPECIFICATIONS (6) RPU timing (TA = -40 to +85C, VDD = 4.0 to 5.5 V, BVDD = EVDD = 3.0 to 5.5 V, VSS = AVSS = BVSS = EVSS = 0 V) Parameter TIn0, TIn1 high-level width Symbol <55> Conditions tTIHn MIN. MAX. Unit n = 0, 1 2Tsam + 20Note ns Note 2Tsam + 20 ns TIn0, TIn1 low-level width <56> tTILn n = 0, 1 TIm high-level width <57> tTIHm m = 2 to 5 3T + 20 ns TIm low-level width <58> tTILm m = 2 to 5 3T + 20 ns Note Tsam can select the following count clocks by setting the PRMn2 to PRMn0 bits of prescaler mode registers n0, n1 (PRMn0, PRMn1). When n = 0 (TM0), Tsam = 2T, 4T, 16T, 64T, 256T, or 1/INTWTNI cycle When n = 1 (TM1), Tsam = 2T, 4T, 16T, 32T, 128T, or 256T However, when the TIn0 valid edge is selected as the count clock, Tsam = 4T. Remark T = 1/fXX <55> <56> <57> <58> TIn0, TIn1 (input) TIm (input) Remark n = 0, 1 m = 2 to 5 (7) Asynchronous serial interface (UART0, UART1) timing (TA = -40 to +85C, VDD = 4.0 to 5.5 V, BVDD = EVDD = 3.0 to 5.5 V, VSS = AVSS = BVSS = EVSS = 0 V) Parameter Symbol Conditions MIN. MAX. Unit ASCKn cycle time <59> tKCY13 200 ns ASCKn high-level width <60> tKH13 80 ns ASCKn low-level width <61> tKL13 80 ns Remark n = 0, 1 <59> <60> <61> ASCKn (input) Remark n = 0, 1 622 User's Manual U13850EJ6V0UD CHAPTER 20 ELECTRICAL SPECIFICATIONS (8) 3-wire serial interface (CSI0 to CSI3) timing (a) Master mode (TA = -40 to +85C, VDD = 4.0 to 5.5 V, BVDD = EVDD = 3.0 to 5.5 V, VSS = AVSS = BVSS = EVSS = 0 V) Parameter Symbol Conditions MIN. MAX. Unit SCKn cycle <62> tKCY1 400 ns SCKn high-level width <63> tKH1 140 ns SCKn low-level width <64> tKL1 140 ns SIn setup time (to SCKn) <65> tSIK1 50 ns SIn hold time (from SCKn) <66> tKSI1 50 ns Delay time from SCKn to SOn output <67> tKSO1 60 ns Remark n = 0 to 3 (b) Slave mode (TA = -40 to +85C, VDD = 4.0 to 5.5 V, BVDD = EVDD = 3.0 to 5.5 V, VSS = AVSS = BVSS = VSS = 0 V) Parameter Symbol Conditions MIN. MAX. Unit SCKn cycle <62> tKCY2 400 ns SCKn high-level width <63> tKH2 140 ns SCKn low-level width <64> tKL2 140 ns SIn setup time (to SCKn) <65> tSIK2 50 ns SIn hold time (from SCKn) <66> tKSI2 50 ns Delay time from SCKn to SOn output <67> tKSO2 4.0 V EVDD 5.5 V Note 1 60 ns Note 2 70 ns 100 ns 3.0 V EVDD < 4.0 V Notes 1. PD703031A, 703031AY, 703031B, 703031BY, 703033A, 703033AY, 703033B, 703033BY, 703034A, 703034AY, 703034B, 703034BY, 703035A, 703035AY, 703035B, 703035BY, 70F3033A, 70F3033AY, 70F3033B, 70F3033BY, 70F3035A, 70F3035AY, 70F3035B, 70F3035BY 2. PD703030B, 703030BY, 703032A, 703032AY, 703032B, 703032BY, 703036H, 703036HY, 703037A, 703037AY, 703037H, 703037HY, 70F3030B, 70F3030BY, 70F3032A, 70F3032AY, 70F3032B, 70F3032BY, 70F3036H, 70F3036HY, 70F3037A, 70F3037AY, 70F3037H, 70F3037HY Remark n = 0 to 3 User's Manual U13850EJ6V0UD 623 CHAPTER 20 ELECTRICAL SPECIFICATIONS <62> <63> <64> SCKn (I/O) <65> SIn (input) <66> Input data <67> SOn (output) Output data Remarks 1. The broken lines indicate high impedance. 2. n = 0 to 3 624 User's Manual U13850EJ6V0UD CHAPTER 20 ELECTRICAL SPECIFICATIONS (9) 3-wire variable length serial interface (CSI4) timing (a) Master mode (TA = -40 to +85C, VDD = 4.0 to 5.5 V, BVDD = EVDD = 3.0 to 5.5 V, VSS = AVSS = BVSS = EVSS = 0 V) Parameter SCK4 cycle Symbol <68> SCK4 high-level width SCK4 low-level width SI4 setup time (to SCK4) <69> <70> <71> tKCY1 tKH1 tKL1 tSIK1 SI4 hold time (from SCK4) <72> tKSI1 Delay time from SCK4 to SO4 output <73> tKSO1 Conditions MIN. MAX. Unit 4.0 V EVDD 5.5 V 200 ns 3.0 V EVDD < 4.0 V 400 ns 4.0 V EVDD 5.5 V 60 ns 3.0 V EVDD < 4.0 V 140 ns 4.0 V EVDD 5.5 V 60 ns 3.0 V EVDD < 4.0 V 140 ns 4.0 V EVDD 5.5 V 25 ns 3.0 V EVDD < 4.0 V 50 ns 20 ns 55 ns (b) Slave mode (TA = -40 to +85C, VDD = 4.0 to 5.5 V, BVDD = EVDD = 3.0 to 5.5 V, VSS = AVSS = BVSS = EVSS = 0 V) Parameter SCK4 cycle SCK4 high-level width SCK4 low-level width SI4 setup time (to SCK4) Symbol <68> <69> <70> <71> tKCY2 tKH2 tKL2 tSIK2 SI4 hold time (from SCK4) <72> tKSI2 Delay time from SCK4 to SO4 output <73> tKSO2 Conditions MIN. MAX. Unit 4.0 V EVDD 5.5 V 200 ns 3.0 V EVDD < 4.0 V 400 ns 4.0 V EVDD 5.5 V 60 ns 3.0 V EVDD < 4.0 V 140 ns 4.0 V EVDD 5.5 V 60 ns 3.0 V EVDD < 4.0 V 140 ns 4.0 V EVDD 5.5 V 25 ns 3.0 V EVDD < 4.0 V 50 ns 20 ns 4.0 V EVDD 5.5 V 55 ns 3.0 V EVDD < 4.0 V 100 ns User's Manual U13850EJ6V0UD 625 CHAPTER 20 ELECTRICAL SPECIFICATIONS <68> <69> <70> SCK4 (I/O) <71> SI4 (input) <72> Input data <73> SO4 (output) Remark 626 Output data The broken lines indicate high impedance. User's Manual U13850EJ6V0UD CHAPTER 20 ELECTRICAL SPECIFICATIONS 2 (10) I C bus mode (Y versions only) (1/2) (TA = -40 to +85C, VDD = 4.0 to 5.5 V, BVDD = EVDD = 3.0 to 5.5 V, VSS = AVSS = BVSS = EVSS = 0 V) Parameter Symbol SCLn clock frequency Normal Mode High-Speed Mode MIN. MAX. MIN. MAX. Unit - fCLK 0 100 0 400 kHz Bus-free time (between stop/start conditions) <74> tBUF 4.7 - 1.3 - s Hold timeNote 1 <75> tHD:STA 4.0 - 0.6 - s SCLn clock low-level width <76> tLOW 4.7 - 1.3 - s SCLn clock high-level width <77> tHIGH 4.0 - 0.6 - s Setup time for start/restart conditions <78> tSU:STA 4.7 - 0.6 - s Data hold time <79> tHD:DAT 5.0 - - - s 0Note 2 - 0Note 2 0.9Note 3 s CBUS compatible master I2C mode Data setup time <80> tSU:DAT 250 Note 4 - 100 - ns Note 5 SDAn and SCLn signal rise time <81> tR - 1000 20 + 0.1Cb 300 ns SDAn and SCLn signal fall time <82> tF - 300 20 + 0.1CbNote 5 300 ns Stop condition setup time <83> tSU:STO 4.0 - 0.6 - s Pulse width of spike suppressed by input filter <84> tSP - - 0 50 ns Capacitance load of each bus line - Cb - 400 - 400 pF Notes 1. At the start condition, the first clock pulse is generated after the hold time. 2. The system requires a minimum of 300 ns hold time internally for the SDAn signal (at VIHmin.. of SCLn signal) in order to occupy the undefined area at the falling edge of SCLn. 3. If the system does not extend the SCLn signal low hold time (tLOW), only the maximum data hold time (tHD:DAT) needs to be satisfied. 2 2 4. The high-speed mode I C bus can be used in the normal-mode I C bus system. In this case, set the 2 high-speed mode I C bus so that it meets the following conditions. * If the system does not extend the SCLn signal's low state hold time: tSU:DAT 250 ns * If the system extends the SCLn signal's low state hold time: Transmit the following data bit to the SDAn line prior to the SCLn line release (tRmax. + tSU:DAT = 1000 2 + 250 = 1250 ns: Normal mode I C bus specification). 5. Cb: Total capacitance of one bus line (unit: pF) Remark n = 0, 1 User's Manual U13850EJ6V0UD 627 CHAPTER 20 ELECTRICAL SPECIFICATIONS 2 (10) I C bus mode (Y versions only) (2/2) <76> <77> SCLn (I/O) <82> <81> <79> <78> <80> <75> <84> <83> <75> SDAn (I/O) <74> Stop condition Remark <81> <82> Start condition Restart condition Stop condition n = 0, 1 A/D Converter Characteristics (TA = -40 to +85C, VDD = AVDD = AVREF = 4.5 to 5.5 V, VSS = AVSS = 0 V, Output pin load capacitance: CL = 50 pF) Parameter Symbol Resolution Conditions MIN. TYP. MAX. Unit 10 10 10 bit ADM2 = 00H 0.6 %FSR ADM2 = 01H 1.0 %FSR 10 s 0.4 %FSR ADM2 = 00H 0.4 %FSR ADM2 = 01H 0.6 %FSR ADM2 = 00H 4.0 LSB ADM2 = 01H 6.0 LSB ADM2 = 00H 4.0 LSB ADM2 = 01H 6.0 LSB 4.5 5.5 V - Note 1 Overall error - Conversion time tCONV 5 Zero-scale errorNote 1 Full-scale error Note 1 Integral linearity error Note 2 Differential linearity error Note 2 Analog reference voltage AVREF AVREF = AVDD Analog power supply voltage AVDD 4.5 5.5 V Analog input voltage VIAN AVSS AVREF V AVREF input current AIREF 1 2 mA AVDD power supply current AIDD ADM2 = 00H 3 6 mA ADM2 = 01H 4 8 mA Operating current Notes 1. Excluding quantization error (0.05 %FSR) 2. Excluding quantization error (0.5 LSB) Remarks 1. LSB: Least Significant Bit FSR: Full Scale Range 2. ADM2: A/D converter mode register 2 628 User's Manual U13850EJ6V0UD CHAPTER 20 ELECTRICAL SPECIFICATIONS IEBus Controller Characteristics (V850/SB2 only) (TA = -40 to +85C, VDD = 4.0 to 5.5 V, BVDD = EVDD = 3.0 to 5.5 V, VSS = AVSS = BVSS = EVSS = 0 V) Parameter IEBus system clock frequency Symbol fS Conditions MIN. TYP. MAX. 6.0Note 1 Communication mode: fixed to mode 1 6.29 Unit MHz Notes 1, 2 MHz Notes 1. 6.0 MHz and 6.29 MHz can not be used together for the IEBus system clock frequency 2. Although the system clock specified in the IEBus specification is 6.0 MHz, operation is guaranteed at 6.29 MHz system clock in the V850/SB2. Regulator (TA = -40 to +85C, VDD = 4.0 to 5.5 V, VSS = 0 V) Parameter Output stabilization time Symbol tREG Conditions Stabilization capacitance C = 1 F (Connected to REGC pin) MIN. TYP. 1 MAX. Unit ms Cautions 1. Be sure to start inputting supply voltage VDD when RESET = VSS = EVSS = BVSS = 0 V (the above state), and make RESET high level after the tREG period has elapsed. 2. If supply voltage BVDD or EVDD is input before the tREG period has elapsed following the input of supply voltage VDD, note that data may be driven from the pins until the tREG period has elapsed because the I/O buffers' power supply was turned on while the circuit was in an undefined state. User's Manual U13850EJ6V0UD 629 CHAPTER 20 ELECTRICAL SPECIFICATIONS Flash Memory Programming Mode (1) PD70F3030B, 70F3030BY, 70F3032A, 70F3032AY, 70F3032B, 70F3032BY, 70F3033B, 70F3033BY Write/erase characteristics (TA = -20 to 85C, VDD = AVDD = BVDD = EVDD = 4.5 to 5.5 V, VSS = AVSS = BVSS = EVSS = 0 V) Parameter Symbol Conditions VPP power supply voltage VPP2 During flash memory programming VDD power supply current IDD When VPP = VPP2, fXX = 20 MHz VPP power supply current IPP VPP = VPP2 Step erase time tER Note 2 Overall erase time per area tERA When the step erase time = 0.2 s, Note 3 Writeback time tWB Note 4 Number of writebacks per writeback command CWB When the writeback time = 1 ms, Note 5 Number of erase/writebacks CERWB Step writing time tWR Note 6 Overall writing time per word tWRW When the step writing time = 20 s (1 word = 4 bytes), Note 7 Number of rewrites per area CERWR 1 erase + 1 write after erase = 1 rewrite, Note 8 MIN. TYP. MAX. Unit 7.5 7.8 8.1 V Note 1 mA 100 mA 20 s/area 0.2 s 1 ms 300 Count/ writeback command 16 Count s 20 20 200 100 s/word Count/area Notes 1. IDD = 63 (PD70F3033B, 70F3033BY), IDD = 68 (PD70F3030B, 70F3030BY), IDD = 73 (PD70F3032A, 70F3032AY, 70F3032B, 70F3032BY) 2. The recommended setting value of the step erase time is 0.2 s. 3. The prewrite time prior to erasure and the erase verify time (writeback time) are not included. 4. The recommended setting value of the writeback time is 1 ms. 5. Writeback is executed once by the issuance of the writeback command. Therefore, the retry count must be the maximum value minus the number of commands issued. 6. The recommended setting value of the step writing time is 20 s. 7. 20 s is added to the actual writing time per word. The internal verify time during and after the writing is not included. 8. When writing initially to shipped products, both "erase to write" and "write only" are counted as one rewrite. Example (P: Write, E: Erase) Shipped product P E P E P: 3 rewrites Shipped product E P E P E P: 3 rewrites Remarks 1. When the PG-FP3 is used, a time parameter required for writing/erasing by downloading parameter files is automatically set. Do not change the settings unless otherwise specified. 2. Area 0 = 000000H to 01FFFFH Area 2 = 040000H to 05FFFFH Area 1 = 020000H to 03FFFFH Area 3 = 060000H to 07FFFFH PD70F3030B, 70F3030BY: Areas 0 to 2 PD70F3032A, 70F3032AY, 70F3032B, 70F3032BY: Areas 0 to 3 PD70F3033B, 70F3033BY: Areas 0 and 1 630 User's Manual U13850EJ6V0UD CHAPTER 20 ELECTRICAL SPECIFICATIONS (2) PD70F3033A, 70F3033AY Write/erase characteristics (TA = 10 to 85C ... K rank product, TA = -20 to +85C ... E rank product, VDD = AVDD = BVDD = EVDD = 4.5 to 5.5 V, VSS = AVSS = BVSS = EVSS = 0 V) Parameter Symbol Conditions MIN. TYP. MAX. Unit 7.5 7.8 8.1 V VPP power supply voltage VPP2 During flash memory programming VDD power supply current IDD When VPP = VPP2, fXX = 20 MHz 63 mA VPP power supply current IPP VPP = VPP2 100 mA Step erase time tER Note 1 Overall erase time per area tERA When the step erase time = 0.2 s, Note 2 Writeback time tWB Note 3 Number of writebacks per writeback command CWB When the writeback time = 1 ms, Note 4 Number of erase/writebacks CERWB Step writing time tWR Note 5 Overall writing time per word tWRW When the step writing time = 20 s (1 word = 4 bytes), Note 6 Number of rewrites per area CERWR 1 erase + 1 write after erase = 1 rewrite, Note 7 0.2 s 20 1 ms 300 Count/ writeback command 16 Count s 20 20 s/area 200 Note 8 s/word Count/area Notes 1. The recommended setting value of the step erase time is 0.2 s. 2. The prewrite time prior to erasure and the erase verify time (writeback time) are not included. 3. The recommended setting value of the writeback time is 1 ms. 4. Writeback is executed once by the issuance of the writeback command. Therefore, the retry count must be the maximum value minus the number of commands issued. 5. The recommended setting value of the step writing time is 20 s. 6. 20 s is added to the actual writing time per word. The internal verify time during and after the writing is not included. 7. When writing initially to shipped products, both "erase to write" and "write only" are counted as one rewrite for. Example (P: Write, E: Erase) Shipped product P E P E P: 3 rewrites Shipped product E P E P E P: 3 rewrites 8. K rank product: 20 writes/area E rank product: 100 writes/area Remarks 1. When the PG-FP3 is used, a time parameter required for writing/erasing by downloading parameter files is automatically set. Do not change the settings unless otherwise specified. 2. Area 0 = 000000H to 01FFFFH Area 1 = 020000H to 03FFFFH User's Manual U13850EJ6V0UD 631 CHAPTER 20 ELECTRICAL SPECIFICATIONS (3) PD70F3035A, 70F3035AY Write/erase characteristics (TA = 10 to 85C ... K, E rank product, TA = -20 to +85C ... P rank product, VDD = AVDD = BVDD = EVDD = 4.5 to 5.5 V, VSS = AVSS = BVSS = EVSS = 0 V) Parameter Symbol Conditions MIN. TYP. MAX. Unit 7.5 7.8 8.1 V VPP power supply voltage VPP2 During flash memory programming VDD power supply current IDD When VPP = VPP2, fXX = 13 MHz 51 mA VPP power supply current IPP VPP = VPP2 100 mA Step erase time tER Note 1 Overall erase time per area tERA When the step erase time = 0.2 s, Note 2 Writeback time tWB Note 3 Number of writebacks per writeback command CWB When the writeback time = 1 ms, Note 4 Number of erase/writebacks CERWB Step writing time tWR Note 5 Overall writing time per word tWRW When the step writing time = 20 s (1 word = 4 bytes), Note 6 Number of rewrites per area CERWR 1 erase + 1 write after erase = 1 rewrite, Note 7 s 0.2 20 ms 1 300 Count/ writeback command 16 Count s 20 20 s/area 200 Note 8 s/word Count/area Notes 1. The recommended setting value of the step erase time is 0.2 s. 2. The prewrite time prior to erasure and the erase verify time (writeback time) are not included. 3. The recommended setting value of the writeback time is 1 ms. 4. Writeback is executed once by the issuance of the writeback command. Therefore, the retry count must be the maximum value minus the number of commands issued. 5. The recommended setting value of the step writing time is 20 s. 6. 20 s is added to the actual writing time per word. The internal verify time during and after the writing is not included. 7. When writing initially to shipped products, both "erase to write" and "write only" are counted as one rewrite for. Example (P: Write, E: Erase) Shipped product P E P E P: 3 rewrites Shipped product E P E P E P: 3 rewrites 8. K, E rank product: 20 writes/area P rank product: 100 writes/area Remarks 1. When the PG-FP3 is used, a time parameter required for writing/erasing by downloading parameter files is automatically set. Do not change the settings unless otherwise specified. 2. Area 0 = 000000H to 01FFFFH Area 1 = 020000H to 03FFFFH 632 User's Manual U13850EJ6V0UD CHAPTER 20 ELECTRICAL SPECIFICATIONS (4) PD70F3035B, 70F3035BY, 70F3037A, 70F3037AY, Write/erase characteristics (TA = -20 to +85C, VDD = AVDD = BVDD = EVDD = 4.5 to 5.5 V, VSS = AVSS = BVSS = EVSS = 0 V) Parameter Symbol Conditions VPP power supply voltage VPP2 During flash memory programming VDD power supply current IDD When VPP = VPP2, fXX = 13 MHz VPP power supply current IPP VPP = VPP2 Step erase time tER Note 2 Overall erase time per area tERA When the step erase time = 0.2 s, Note 3 Writeback time tWB Note 4 Number of writebacks per writeback command CWB When the writeback time = 1 ms, Note 5 Number of erase/writebacks CERWB Step writing time tWR Note 6 Overall writing time per word tWRW When the step writing time = 20 s (1 word = 4 bytes), Note 7 Number of rewrites per area CERWR 1 erase + 1 write after erase = 1 rewrite, Note 8 MIN. TYP. MAX. Unit 7.5 7.8 8.1 V Note 1 mA 100 mA 0.2 s 20 1 ms 300 Count/ writeback command 16 Count s 20 20 s/area 200 100 s/word Count/area Notes 1. IDD = 51 (PD70F3035B, 70F3035BY), IDD = 61 (PD70F3037A, 70F3037AY) 2. The recommended setting value of the step erase time is 0.2 s. 3. The prewrite time prior to erasure and the erase verify time (writeback time) are not included. 4. The recommended setting value of the writeback time is 1 ms. 5. Writeback is executed once by the issuance of the writeback command. Therefore, the retry count must be the maximum value minus the number of commands issued. 6. The recommended setting value of the step writing time is 20 s. 7. 20 s is added to the actual writing time per word. The internal verify time during and after the writing is not included. 8. When writing initially to shipped products, both "erase to write" and "write only" are counted as one rewrite. Example (P: Write, E: Erase) Shipped product P E P E P: 3 rewrites Shipped product E P E P E P: 3 rewrites Remarks 1. When the PG-FP3 is used, a time parameter required for writing/erasing by downloading parameter files is automatically set. Do not change the settings unless otherwise specified. 2. Area 0 = 000000H to 01FFFFH Area 2 = 040000H to 05FFFFH Area 1 = 020000H to 03FFFFH Area 3 = 060000H to 07FFFFH PD70F3035B, 70F3035BY: Areas 0 and 1 PD70F3037A, 70F3037AY: Areas 0 to 3 User's Manual U13850EJ6V0UD 633 CHAPTER 20 ELECTRICAL SPECIFICATIONS (5) PD70F3036H, 70F3036HY, 70F3037H, 70F3037HY Write/erase characteristics (TA = -20 to +85C, VDD = AVDD = BVDD = EVDD = 4.5 to 5.5 V, VSS = AVSS = BVSS = EVSS = 0 V) Parameter Symbol Conditions VPP power supply voltage VPP2 During flash memory programming VDD power supply current IDD When VPP = VPP2, fXX = 19 MHz VPP power supply current IPP VPP = VPP2 Step erase time tER Note 2 Overall erase time per area tERA When the step erase time = 0.2 s, Note 3 Writeback time tWB Note 4 Number of writebacks per writeback command CWB When the writeback time = 1 ms, Note 5 Number of erase/writebacks CERWB Step writing time tWR Note 6 Overall writing time per word tWRW When the step writing time = 20 s (1 word = 4 bytes), Note 7 Number of rewrites per area CERWR 1 erase + 1 write after erase = 1 rewrite, Note 8 MIN. TYP. MAX. Unit 7.5 7.8 8.1 V Note 1 mA 100 mA 0.2 s 20 1 ms 300 Count/ writeback command 16 Count s 20 20 s/area 200 100 s/word Count/area Notes 1. IDD = 68 (PD70F3036H, 70F3036HY), IDD = 73 (PD70F3037H, 70F3037HY) 2. The recommended setting value of the step erase time is 0.2 s. 3. The prewrite time prior to erasure and the erase verify time (writeback time) are not included. 4. The recommended setting value of the writeback time is 1 ms. 5. Writeback is executed once by the issuance of the writeback command. Therefore, the retry count must be the maximum value minus the number of commands issued. 6. The recommended setting value of the step writing time is 20 s. 7. 20 s is added to the actual writing time per word. The internal verify time during and after the writing is not included. 8. When writing initially to shipped products, both "erase to write" and "write only" are counted as one rewrite. Example (P: Write, E: Erase) Shipped product P E P E P: 3 rewrites Shipped product E P E P E P: 3 rewrites Remarks 1. When the PG-FP3 is used, a time parameter required for writing/erasing by downloading parameter files is automatically set. Do not change the settings unless otherwise specified. 2. Area 0 = 000000H to 01FFFFH Area 2 = 040000H to 05FFFFH Area 1 = 020000H to 03FFFFH Area 3 = 060000H to 07FFFFH PD70F3036H, 70F3036HY: Areas 0 to 2 PD70F3037H, 70F3037HY: Areas 0 to 3 634 User's Manual U13850EJ6V0UD CHAPTER 21 PACKAGE DRAWINGS 100-PIN PLASTIC LQFP (FINE PITCH) (14x14) A B 75 76 51 50 detail of lead end S C D Q R 26 25 100 1 F G H I J M K P S N S L M NOTE Each lead centerline is located within 0.08 mm of its true position (T.P.) at maximum material condition. ITEM MILLIMETERS A 16.000.20 B 14.000.20 C 14.000.20 D 16.000.20 F 1.00 G 1.00 H 0.22 +0.05 -0.04 I J 0.08 0.50 (T.P.) K 1.000.20 L 0.500.20 M 0.17 +0.03 -0.07 N 0.08 P 1.400.05 Q 0.100.05 R 3 +7 -3 S 1.60 MAX. S100GC-50-8EU, 8EA-2 User's Manual U13850EJ6V0UD 635 CHAPTER 21 PACKAGE DRAWINGS 100-PIN PLASTIC QFP (14x20) A B 51 50 80 81 detail of lead end S C D Q R 31 30 100 1 F G J H I M P K S N S L M NOTE ITEM Each lead centerline is located within 0.15 mm of its true position (T.P.) at maximum material condition. MILLIMETERS A 23.60.4 B 20.00.2 C 14.00.2 D 17.60.4 F 0.8 G H 0.6 0.300.10 I 0.15 J K L 0.65 (T.P.) 1.80.2 0.80.2 M 0.15+0.10 -0.05 N 0.10 P 2.70.1 Q R 0.10.1 55 S 3.0 MAX. P100GF-65-3BA1-4 636 User's Manual U13850EJ6V0UD CHAPTER 22 RECOMMENDED SOLDERING CONDITIONS The V850/SB1 and V850/SB2 should be soldered and mounted under the following recommended conditions. For the details of the recommended soldering conditions, refer to the document Semiconductor Device Mounting Technology Manual (C10535E). For soldering methods and conditions other than those recommended below, contact an NEC Electronics sales representative. Table 22-1. Surface Mounting Type Soldering Conditions (1/5) (1) PD703031AGC-xxx-8EU: 100-pin plastic LQFP (fine pitch) (14 x 14) PD703031BGC-xxx-8EU: 100-pin plastic LQFP (fine pitch) (14 x 14) PD703031AYGC-xxx-8EU: 100-pin plastic LQFP (fine pitch) (14 x 14) PD703031BYGC-xxx-8EU: 100-pin plastic LQFP (fine pitch) (14 x 14) PD703033AGC-xxx-8EU: 100-pin plastic LQFP (fine pitch) (14 x 14) PD703033BGC-xxx-8EU: 100-pin plastic LQFP (fine pitch) (14 x 14) PD703033AYGC-xxx-8EU: 100-pin plastic LQFP (fine pitch) (14 x 14) PD703033BYGC-xxx-8EU: 100-pin plastic LQFP (fine pitch) (14 x 14) PD703034AGC-xxx-8EU: 100-pin plastic LQFP (fine pitch) (14 x 14) PD703034BGC-xxx-8EU: 100-pin plastic LQFP (fine pitch) (14 x 14) PD703034AYGC-xxx-8EU: 100-pin plastic LQFP (fine pitch) (14 x 14) PD703034BYGC-xxx-8EU: 100-pin plastic LQFP (fine pitch) (14 x 14) PD703035AGC-xxx-8EU: 100-pin plastic LQFP (fine pitch) (14 x 14) PD703035BGC-xxx-8EU: 100-pin plastic LQFP (fine pitch) (14 x 14) PD703035AYGC-xxx-8EU: 100-pin plastic LQFP (fine pitch) (14 x 14) PD703035BYGC-xxx-8EU: 100-pin plastic LQFP (fine pitch) (14 x 14) Soldering Method Soldering Conditions Recommended Condition Symbol Infrared reflow Package peak temperature: 235C, Time: 30 seconds max. (at 210C or higher), Count: Two times or less Exposure limit: 7 daysNote (after that, prebake at 125C for 10 to 72 hours) IR35-107-2 VPS Package peak temperature: 215C, Time: 25 to 40 seconds (at 200C or higher), Count: Two times or less Exposure limit: 7 daysNote (after that, prebake at 125C for 10 to 72 hours) VP15-107-2 Partial heating Pin temperature: 300C max., Time: 3 seconds max. (per pin row) - Note After opening the dry pack, store it at 25C or less and 65% RH or less for the allowable storage period. Caution Do not use different soldering methods together (except for partial heating). User's Manual U13850EJ6V0UD 637 CHAPTER 22 RECOMMENDED SOLDERING CONDITIONS Table 22-1. Surface Mounting Type Soldering Conditions (2/5) (2) PD703030BGC-xxx-8EU: 100-pin plastic LQFP (fine pitch) (14 x 14) PD703030BYGC-xxx-8EU: 100-pin plastic LQFP (fine pitch) (14 x 14) PD703036HGC-xxx-8EU: 100-pin plastic LQFP (fine pitch) (14 x 14) PD703036HYGC-xxx-8EU: 100-pin plastic LQFP (fine pitch) (14 x 14) 100-pin plastic LQFP (fine pitch) (14 x 14) PD70F3033AGC-8EU: PD70F3033BGC-8EU: PD70F3033AYGC-8EU: 100-pin plastic LQFP (fine pitch) (14 x 14) PD70F3033BYGC-8EU: PD70F3035AGC-8EU: 100-pin plastic LQFP (fine pitch) (14 x 14) 100-pin plastic LQFP (fine pitch) (14 x 14) 100-pin plastic LQFP (fine pitch) (14 x 14) PD70F3035BGC-8EU: PD70F3035AYGC-8EU: 100-pin plastic LQFP (fine pitch) (14 x 14) PD70F3035BYGC-8EU: 100-pin plastic LQFP (fine pitch) (14 x 14) Soldering Method 100-pin plastic LQFP (fine pitch) (14 x 14) Soldering Conditions Recommended Condition Symbol Infrared reflow Package peak temperature: 235C, Time: 30 seconds max. (at 210C or higher), Count: Two times or less Exposure limit: 3 daysNote (after that, prebake at 125C for 10 to 72 hours) IR35-103-2 VPS Package peak temperature: 215C, Time: 25 to 40 seconds (at 200C or higher), Count: Two times or less Exposure limit: 3 daysNote (after that, prebake at 125C for 10 to 72 hours) VP15-103-2 Partial heating Pin temperature: 300C max., Time: 3 seconds max. (per pin row) - Note After opening the dry pack, store it at 25C or less and 65% RH or less for the allowable storage period. Caution 638 Do not use different soldering methods together (except for partial heating). User's Manual U13850EJ6V0UD CHAPTER 22 RECOMMENDED SOLDERING CONDITIONS Table 22-1. Surface Mounting Type Soldering Conditions (3/5) (3) PD703030BGF-xxx-3BA: 100-pin plastic QFP (14 x 20) PD703035AGF-xxx-3BA: 100-pin plastic QFP (14 x 20) PD703030BYGF-xxx-3BA: 100-pin plastic QFP (14 x 20) PD703035BGF-xxx-3BA: 100-pin plastic QFP (14 x 20) PD703031AGF-xxx-3BA: 100-pin plastic QFP (14 x 20) PD703035AYGF-xxx-3BA: 100-pin plastic QFP (14 x 20) PD703031BGF-xxx-3BA: 100-pin plastic QFP (14 x 20) PD703035BYGF-xxx-3BA: 100-pin plastic QFP (14 x 20) PD703031AYGF-xxx-3BA: 100-pin plastic QFP (14 x 20) PD703036HGF-xxx-3BA: PD703031BYGF-xxx-3BA: 100-pin plastic QFP (14 x 20) PD703036HYGF-xxx-3BA: 100-pin plastic QFP (14 x 20) PD703032AGF-xxx-3BA: 100-pin plastic QFP (14 x 20) PD703037AGF-xxx-3BA: 100-pin plastic QFP (14 x 20) PD703032BGF-xxx-3BA: 100-pin plastic QFP (14 x 20) PD703037HGF-xxx-3BA: 100-pin plastic QFP (14 x 20) 100-pin plastic QFP (14 x 20) PD703032AYGF-xxx-3BA: 100-pin plastic QFP (14 x 20) PD703037AYGF-xxx-3BA: 100-pin plastic QFP (14 x 20) PD703032BYGF-xxx-3BA: 100-pin plastic QFP (14 x 20) PD703037HYGF-xxx-3BA: 100-pin plastic QFP (14 x 20) PD703033AGF-xxx-3BA: 100-pin plastic QFP (14 x 20) PD70F3033AGF-3BA: 100-pin plastic QFP (14 x 20) PD703033BGF-xxx-3BA: 100-pin plastic QFP (14 x 20) PD70F3033BGF-3BA: 100-pin plastic QFP (14 x 20) PD703033AYGF-xxx-3BA: 100-pin plastic QFP (14 x 20) PD70F3033AYGF-3BA: 100-pin plastic QFP (14 x 20) PD703033BYGF-xxx-3BA: 100-pin plastic QFP (14 x 20) PD70F3033BYGF-3BA: 100-pin plastic QFP (14 x 20) PD703034AGF-xxx-3BA: 100-pin plastic QFP (14 x 20) PD70F3035AGF-3BA: 100-pin plastic QFP (14 x 20) PD703034BGF-xxx-3BA: 100-pin plastic QFP (14 x 20) PD70F3035BGF-3BA: 100-pin plastic QFP (14 x 20) PD703034AYGF-xxx-3BA: 100-pin plastic QFP (14 x 20) PD70F3035AYGF-3BA: 100-pin plastic QFP (14 x 20) PD703034BYGF-xxx-3BA: 100-pin plastic QFP (14 x 20) PD70F3035BYGF-3BA: 100-pin plastic QFP (14 x 20) Soldering Method Soldering Conditions Recommended Condition Symbol Infrared reflow Package peak temperature: 235C, Time: 30 seconds max. (at 210C or higher), Count: Two times or less Exposure limit: 7 daysNote (after that, prebake at 125C for 20 to 72 hours) IR35-207-2 VPS Package peak temperature: 215C, Time: 25 to 40 seconds (at 200C or higher), Count: Two times or less Exposure limit: 7 daysNote (after that, prebake at 125C for 20 to 72 hours) VP15-207-2 Wave soldering Solder bath temperature: 260C max., Time: 10 seconds max., Count: Once Preheating temperature: 120C max. (package surface temperature) Exposure limit: 7 daysNote (after that, prebake at 125C for 20 to 72 hours) WS60-207-1 Partial heating Pin temperature: 300C max., Time: 3 seconds max. (per pin row) - Note After opening the dry pack, store it at 25C or less and 65% RH or less for the allowable storage period. Caution Do not use different soldering methods together (except for partial heating). User's Manual U13850EJ6V0UD 639 CHAPTER 22 RECOMMENDED SOLDERING CONDITIONS Table 22-1. Surface Mounting Type Soldering Conditions (4/5) (4) PD70F3030BGF-3BA: 100-pin plastic QFP (14 x 20) PD70F3030BYGF-3BA: 100-pin plastic QFP (14 x 20) PD70F3032AGF-3BA: 100-pin plastic QFP (14 x 20) PD70F3032BGF-3BA: 100-pin plastic QFP (14 x 20) PD70F3032AYGF-3BA: 100-pin plastic QFP (14 x 20) PD70F3032BYGF-3BA: 100-pin plastic QFP (14 x 20) PD70F3036HGF-3BA: 100-pin plastic QFP (14 x 20) PD70F3036HYGF-3BA: 100-pin plastic QFP (14 x 20) PD70F3037AGF-3BA: 100-pin plastic QFP (14 x 20) PD70F3037HGF-3BA: 100-pin plastic QFP (14 x 20) PD70F3037AYGF-3BA: 100-pin plastic QFP (14 x 20) PD70F3037HYGF-3BA: 100-pin plastic QFP (14 x 20) Soldering Method Soldering Conditions Recommended Condition Symbol Infrared reflow Package peak temperature: 235C, Time: 30 seconds max. (at 210C or higher), Count: Two times or less Exposure limit: 3 daysNote (after that, prebake at 125C for 20 to 72 hours) IR35-203-2 VPS Package peak temperature: 215C, Time: 25 to 40 seconds (at 200C or higher), Count: Two times or less Exposure limit: 3 daysNote (after that, prebake at 125C for 20 to 72 hours) VP15-203-2 Wave soldering Solder bath temperature: 260C max., Time: 10 seconds max., Count: once Preheating temperature: 120C max. (package surface temperature) Exposure limit: 3 daysNote (after that, prebake at 125C for 20 to 72 hours) WS60-203-1 Partial heating Pin temperature: 300C max., Time: 3 seconds max. (per pin row) - Note After opening the dry pack, store it at 25C or less and 65% RH or less for the allowable storage period. Caution 640 Do not use different soldering methods together (except for partial heating). User's Manual U13850EJ6V0UD CHAPTER 22 RECOMMENDED SOLDERING CONDITIONS Table 22-1. Surface Mounting Type Soldering Conditions (5/5) (5) PD70F3030BGC-8EU: 100-pin plastic LQFP (fine pitch) (14 x 14) PD70F3030BYGC-8EU: 100-pin plastic LQFP (fine pitch) (14 x 14) PD70F3036HGC-8EU: 100-pin plastic LQFP (fine pitch) (14 x 14) PD70F3036HYGC-8EU: 100-pin plastic LQFP (fine pitch) (14 x 14) Soldering Method Soldering Conditions Recommended Condition Symbol Infrared reflow Package peak temperature: 230C, Time: 30 seconds max. (at 210C or higher), Count: Two times or less Exposure limit: 3 daysNote (after that, prebake at 125C for 10 hours) IR30-103-2 VPS Package peak temperature: 215C, Time: 25 to 40 seconds (at 200C or higher), Count: Two times or less Exposure limit: 3 daysNote (after that, prebake at 125C for 10 hours) VP15-103-2 Partial heating Pin temperature: 300C max., Time: 3 seconds max. (per pin row) - Note After opening the dry pack, store it at 25C or less and 65% RH or less for the allowable storage period. Caution Do not use different soldering methods together (except for partial heating). User's Manual U13850EJ6V0UD 641 APPENDIX A NOTES ON TARGET SYSTEM DESIGN The following shows a diagram of the connection conditions between the in-circuit emulator option board and conversion connector. Design your system making allowances for conditions such as the shape of parts mounted on the target system as shown below. Figure A-1. 100-Pin Plastic LQFP (Fine Pitch) (14 x 14) Side view In-circuit emulator IE-703002-MC In-circuit emulator option board IE-703037-MC-EM1 178 mm Note Conversion connector YQGUIDE YQPACK100SD NQPACK100SD Target system Note YQSOCKET100SDN (included with IE-703002-MC) can be inserted here to adjust the height (height: 3.2 mm). Top view IE-703002-MC Target system Pin 1 position IE-703037-MC-EM1 YQPACK100SD, NQPACK100SD, YQGUIDE Connection condition diagram IE-703037-MC-EM1 Connect to IE-703002-MC. Pin 1 position 75 mm YQGUIDE YQPACK100SD NQPACK100SD 13.3 mm 31.84 mm 17.78 mm 25.4 mm 642 21.58 mm User's Manual U13850EJ6V0UD Target system APPENDIX A NOTES ON TARGET SYSTEM DESIGN Figure A-2. 100-Pin Plastic QFP (14 x 20) Side view In-circuit emulator IE-703002-MC In-circuit emulator option board IE-703037-MC-EM1 Conversion connector 178 mm Note NEXB-100-SD/RB YQGUIDE YQPACK100RB NQPACK100RB Target system Note YQSOCKET100SDN (included with IE-703002-MC) to this portion for adjusting the height (height: 3.2 mm). Top view IE-703002-MC NEXB-100-SD/RB Target system Pin 1 position IE-703037-MC-EM1 20 mm 8 mm YQPACK100RB, NQPACK100RB, YQGUIDE Connection condition diagram IE-703037-MC-EM1 Connect to IE-703002-MC. Pin 1 position 75 mm NEXB-100-SD/RB YQPACK100RB NQPACK100RB 33.2 mm 38 mm Target system 20 mm 28 mm 18.5 mm User's Manual U13850EJ6V0UD 643 APPENDIX B REGISTER INDEX (1/7) Symbol Name Unit Page ADCR A/D conversion result register ADC 433 ADCRH A/D conversion result register H ADC 433 ADIC Interrupt control register INTC 162 to 164 ADM1 A/D converter mode register 1 ADC 435 ADM2 A/D converter mode register 2 ADC 437 ADS Analog input channel specification register ADC 437 ASIM0 Asynchronous serial interface mode register 0 UART 402 ASIM1 Asynchronous serial interface mode register 1 UART 402 ASIS0 Asynchronous serial interface status register 0 UART 403 ASIS1 Asynchronous serial interface status register 1 UART 403 BCC Bus cycle control register BCU 134 BCR IEBus control register IEBus 561 BRGC0 Baud rate generator control register 0 UART 404 BRGC1 Baud rate generator control register 1 UART 404 BRGCK4 Baud rate generator output clock selection register 4 CSI 425 BRGCN4 Baud rate generator source clock selection register 4 CSI 424 BRGMC00 Baud rate generator mode control register 00 UART 405 BRGMC01 Baud rate generator mode control register 01 UART 405 BRGMC10 Baud rate generator mode control register 10 UART 405 BRGMC11 Baud rate generator mode control register 11 UART 405 CCR IEBus communication count register IEBus 582 CDR IEBus control data register IEBus 565 CORAD0 Correction address register 0 CPU 521 CORAD1 Correction address register 1 CPU 521 CORAD2 Correction address register 2 CPU 521 CORAD3 Correction address register 3 CPU 521 CORCN Correction control register CPU 519 CORRQ Correction request register CPU 520 CR00 16-bit capture/compare register 00 Timer 203 CR01 16-bit capture/compare register 01 Timer 204 CR10 16-bit capture/compare register 10 Timer 203 CR11 16-bit capture/compare register 11 Timer 204 CR20 8-bit compare register 2 Timer 236 CR23 16-bit compare register 23 (when TM2 and TM3 are connected in cascade) Timer 250 CR30 8-bit compare register 3 Timer 236 644 User's Manual U13850EJ6V0UD APPENDIX B REGISTER INDEX (2/7) Symbol Name Unit Page CR40 8-bit compare register 4 Timer 236 CR45 16-bit compare register 45 (when TM4 and TM5 are connected in cascade) Timer 250 CR50 8-bit compare register 5 Timer 236 CR60 8-bit compare register 6 Timer 236 CR67 16-bit compare register 67 (when TM6 and TM7 are connected in cascade) Timer 250 CR70 8-bit compare register 7 Timer 236 CRC0 Capture/compare control register 0 Timer 207 CRC1 Capture/compare control register 1 Timer 207 CSIB4 Variable-length serial setting register 4 CSI 423 CSIC0 Interrupt control register INTC 162 to 164 CSIC1 Interrupt control register INTC 162 to 164 CSIC2 Interrupt control register INTC 162 to 164 CSIC3 Interrupt control register INTC 162 to 164 CSIC4 Interrupt control register INTC 162 to 164 CSIM0 Serial operation mode register 0 CSI 270 CSIM1 Serial operation mode register 1 CSI 270 CSIM2 Serial operation mode register 2 CSI 270 CSIM3 Serial operation mode register 3 CSI 270 CSIM4 Variable-length serial control register 4 CSI 422 CSIS0 Serial clock selection register 0 CSI 270 CSIS1 Serial clock selection register 1 CSI 270 CSIS2 Serial clock selection register 2 CSI 270 CSIS3 Serial clock selection register 3 CSI 270 DBC0 DMA byte counter register 0 DMAC 459 DBC1 DMA byte counter register 1 DMAC 459 DBC2 DMA byte counter register 2 DMAC 459 DBC3 DMA byte counter register 3 DMAC 459 DBC4 DMA byte counter register 4 DMAC 459 DBC5 DMA byte counter register 5 DMAC 459 DCHC0 DMA channel control register 0 DMAC 460 DCHC1 DMA channel control register 1 DMAC 460 DCHC2 DMA channel control register 2 DMAC 460 DCHC3 DMA channel control register 3 DMAC 460 DCHC4 DMA channel control register 4 DMAC 460 DCHC5 DMA channel control register 5 DMAC 460 DIOA0 DMA peripheral I/O address register 0 DMAC 453 DIOA1 DMA peripheral I/O address register 1 DMAC 453 DIOA2 DMA peripheral I/O address register 2 DMAC 453 User's Manual U13850EJ6V0UD 645 APPENDIX B REGISTER INDEX (3/7) Symbol Name Unit Page DIOA3 DMA peripheral I/O address register 3 DMAC 453 DIOA4 DMA peripheral I/O address register 4 DMAC 453 DIOA5 DMA peripheral I/O address register 5 DMAC 453 DLR IEBus telegraph length register IEBus 569 DMAIC0 Interrupt control register INTC 162 to 164 DMAIC1 Interrupt control register INTC 162 to 164 DMAIC2 Interrupt control register INTC 162 to 164 DMAIC3 Interrupt control register INTC 162 to 164 DMAIC4 Interrupt control register INTC 162 to 164 DMAIC5 Interrupt control register INTC 162 to 164 DMAS DMA start factor expansion register DMAC 459 DR IEBus data register IEBus 571 DRA0 DMA internal RAM address register 0 DMAC 454 DRA1 DMA internal RAM address register 1 DMAC 454 DRA2 DMA internal RAM address register 2 DMAC 454 DRA3 DMA internal RAM address register 3 DMAC 454 DRA4 DMA internal RAM address register 4 DMAC 454 DRA5 DMA internal RAM address register 5 DMAC 454 DWC Data wait control register BCU 132 ECR Interrupt source register CPU 99 EGN0 Falling edge specification register 0 INTC 154, 477 EGP0 Rising edge specification register 0 INTC 154, 477 EIPC Status saving register during interrupt CPU 99 EIPSW Status saving register during interrupt CPU 99 FEPC Status saving registers for NMI CPU 99 FEPSW Status saving registers for NMI CPU 99 IEBIC1 Interrupt control register IEBus 162 to 164 IEBIC2 Interrupt control register IEBus 162 to 164 IECLK IEBus clock selection register IEBus 582 IEHCLK IEBus high-speed clock selection register IEBus 583 IIC0 IIC1 IICC0 IIC shift register 0 2 278, 291, 352 2 278, 291, 352 2 280, 339 2 IC IIC shift register 1 IC IIC control register 0 IC IICC1 IIC control register 1 IC 280, 339 IICCE0 IIC clock expansion register 0 I2C 289, 350 IICCE1 IICCL0 IICCL1 646 IIC clock expansion register 1 2 289, 350 2 288, 349 2 288, 349 IC IIC clock selection register 0 IC IIC clock selection register 1 IC User's Manual U13850EJ6V0UD APPENDIX B REGISTER INDEX (4/7) Symbol IICF0 IICF1 IICIC1 Name Unit I2C IIC flag register 0 IIC flag register 1 347 2 347 2 160 to 164 2 IC Interrupt control register Page IC IICS0 IIC status register 0 IC 285, 344 IICS1 IIC status register 1 I2C 285, 344 IICX0 IIC function expansion register 0 I2C 289, 350 2 IICX1 IIC function expansion register 1 IC ISPR In-service priority register INTC 165 ISR IEBus interrupt status register IEBus 575 KRIC Interrupt control register KR 162 to 164 KRM Key return mode register KR 180 MAM Memory address output mode register Port 116 MM Memory expansion mode register Port 115 NCC Noise elimination control register INTC 167 OSTS Oscillation stabilization time selection register WDT 187, 262, 267 P0 Port 0 Port 474 P1 Port 1 Port 479 P2 Port 2 Port 483 P3 Port 3 Port 488 P4 Port 4 Port 492 P5 Port 5 Port 492 P6 Port 6 Port 495 P7 Port 7 Port 498 P8 Port 8 Port 498 P9 Port 9 Port 500 P10 Port 10 Port 503 P11 Port 11 Port 507 PAC Port alternate function control register Port 509 PAR IEBus partner address register IEBus 565 PCC Processor clock control register CG 184 PF1 Port 1 function register Port 481 PF2 Port 2 function register Port 485 PF3 Port 3 function register Port 490 PF10 Port 10 function register Port 505 PIC0 Interrupt control register INTC 162 to 164 PIC1 Interrupt control register INTC 162 to 164 PIC2 Interrupt control register INTC 162 to 164 PIC3 Interrupt control register INTC 162 to 164 User's Manual U13850EJ6V0UD 289, 350 647 APPENDIX B REGISTER INDEX (5/7) Symbol Name Unit Page PIC4 Interrupt control register INYC 162 to 164 PIC5 Interrupt control register INTC 162 to 164 PIC6 Interrupt control register INTC 162 to 164 PM0 Port 0 mode register Port 476 PM1 Port 1 mode register Port 480 PM2 Port 2 mode register Port 484 PM3 Port 3 mode register Port 489 PM4 Port 4 mode register Port 493 PM5 Port 5 mode register Port 493 PM6 Port 6 mode register Port 496 PM9 Port 9 mode register Port 501 PM10 Port 10 mode register Port 504 PM11 Port 11 mode register Port 508 PRCMD Command register CG 127 PRM00 Prescaler mode register 00 RPU 209 PRM01 Prescaler mode register 01 RPU 209 PRM10 Prescaler mode register 10 RPU 210 PRM11 Prescaler mode register 11 RPU 210 PSC Power save control register CG 186 PSW Program status word CPU 100 PU0 Pull-up resistor option register 0 Port 476 PU1 Pull-up resistor option register 1 Port 480 PU2 Pull-up resistor option register 2 Port 485 PU3 Pull-up resistor option register 3 Port 489 PU10 Pull-up resistor option register 10 Port 505 PU11 Pull-up resistor option register 11 Port 509 RTBH Real-time output buffer register H RTO 468 RTBL Real-time output buffer register L RTO 468 RTPC Real-time output port control register RTO 470 RTPM Real-time output port mode register RTO 469 RX0 Receive shift register 0 UART 400 RX1 Receive shift register 1 UART 400 RXB0 Receive buffer register 0 UART 400 RXB1 Receive buffer register 1 UART 400 SAR IEBus slave address register IEBus 433, 564 SCR IEBus success count register IEBus 581 SERIC0 Interrupt control register INTC 162 to 164 SERIC1 Interrupt control register INTC 162 to 164 648 User's Manual U13850EJ6V0UD APPENDIX B REGISTER INDEX (6/7) Symbol Name Unit Page SIO0 Serial I/O shift register 0 CSI 269 SIO1 Serial I/O shift register 1 CSI 269 SIO2 Serial I/O shift register 2 CSI 269 SIO3 Serial I/O shift register 3 CSI 269 SIO4 Variable-length serial I/O shift register 4 CSI 420 SSR IEBus slave status register IEBus 580 STIC0 Interrupt control register INTC 162 to 164 STIC1 Interrupt control register INTC 162 to 164 SVA0 Slave address register 0 2 278, 291, 352 2 IC SVA1 Slave address register 1 IC 278, 291, 352 SYC System control register CG 129 SYS System status register CG 127 TCL20 Timer clock selection register 20 Timer 237 TCL21 Timer clock selection register 21 Timer 237 TCL30 Timer clock selection register 30 Timer 237 TCL31 Timer clock selection register 31 Timer 237 TCL40 Timer clock selection register 40 Timer 237 TCL41 Timer clock selection register 41 Timer 237 TCL50 Timer clock selection register 50 Timer 237 TCL51 Timer clock selection register 51 Timer 237 TCL60 Timer clock selection register 60 Timer 237 TCL61 Timer clock selection register 61 Timer 237 TCL70 Timer clock selection register 70 Timer 237 TCL71 Timer clock selection register 71 Timer 237 TM0 16-bit timer register 0 Timer 202 TM1 16-bit timer register 1 Timer 202 TM2 8-bit counter 2 Timer 236 TM23 16-bit counter 23 (when TM2 and TM3 are connected in cascade) Timer 250 TM3 8-bit counter 3 Timer 236 TM4 8-bit counter 4 Timer 236 TM45 16-bit counter 45 (when TM4 and TM5 are connected in cascade) Timer 250 TM5 8-bit counter 5 Timer 236 TM6 8-bit counter 6 Timer 236 TM67 16-bit counter 67 (when TM6 and TM7 are connected in cascade) Timer 250 TM7 8-bit counter 7 Timer 236 TMC0 16-bit timer mode control register 0 Timer 205 TMC1 16-bit timer mode control register 1 Timer 205 TMC2 8-bit timer mode control register 2 Timer 240 User's Manual U13850EJ6V0UD 649 APPENDIX B REGISTER INDEX (7/7) Symbol Name Unit Page TMC3 8-bit timer mode control register 3 Timer 240 TMC4 8-bit timer mode control register 4 Timer 240 TMC5 8-bit timer mode control register 5 Timer 240 TMC6 8-bit timer mode control register 6 Timer 240 TMC7 8-bit timer mode control register 7 Timer 240 TMIC00 Interrupt control register INTC 162 to 164 TMIC01 Interrupt control register INTC 162 to 164 TMIC10 Interrupt control register INTC 162 to 164 TMIC11 Interrupt control register INTC 162 to 164 TMIC2 Interrupt control register INTC 162 to 164 TMIC3 Interrupt control register INTC 162 to 164 TMIC4 Interrupt control register INTC 162 to 164 TMIC5 Interrupt control register INTC 162 to 164 TMIC6 Interrupt control register INTC 162 to 164 TMIC7 Interrupt control register INTC 162 to 164 TOC0 16-bit timer output control register 0 RPU 208 TOC1 16-bit timer output control register 1 RPU 208 TXS0 Transmit shift register 0 UART 400 TXS1 Transmit shift register 1 UART 400 UAR IEBus unit address register IEBus 564 USR IEBus unit status register IEBus 572 WDCS Watchdog timer clock selection register WDT 263 WDTIC Interrupt control register INTC 162 to 164 WDTM Watchdog timer mode register WDT 166, 264 WTNCS Watch timer clock selection register WT 257 WTNHC Watch timer high-speed clock selection register WT 256 WTNIC Interrupt control register INTC 162 to 164 WTNIIC Interrupt control register INTC 162 to 164 WTNM Watch timer mode control register WT 650 User's Manual U13850EJ6V0UD 255 APPENDIX C INSTRUCTION SET LIST * How to Read Instruction Set List This column shows instruction groups. Instructions are divided into each instruction group and described. This column shows instruction mnemonics. This column shows instruction operands (refer to Table C-1). This column shows instruction codes (opcode) in binary format. 32-bit instructions are displayed in 2 lines (refer to Table C-2). This column shows instruction operations (refer to Table C-3). This column shows flag statuses (refer to Table C-4). Instruction Group Mnemonic Operand Opcode Operation Flag CY OV S Z SAT Table C-1. Symbols in Operand Description Symbol Description reg1 General-purpose register (r0 to r31): Used as source register reg2 General-purpose register (r0 to r31): Mainly used as destination register ep Element pointer (r30) bit#3 3-bit data for bit number specification immx x-bit immediate data dispx x-bit displacement regID System register number vector 5-bit data that specifies trap vector number (00H to 1FH) cccc 4-bit data that indicates condition code User's Manual U13850EJ6V0UD 651 APPENDIX C INSTRUCTION SET LIST Table C-2. Symbols Used for Opcode Symbol Description R 1-bit data of code that specifies reg1 or regID r 1-bit data of code that specifies reg2 d 1-bit data of displacement i 1-bit data of immediate data cccc 4-bit data that indicates condition code bbb 3-bit data that specifies bit number Table C-3. Symbols Used for Operation Description Symbol Description Assignment GR[ ] Genera-purpose register SR[ ] System register zero-extend (n) Zero-extends n to word length. sign-extend (n) Sign-extends n to word length. load-memory (a,b) Reads data of size b from address a. store-memory (a,b,c) Writes data b of size c to address a. load-memory-bit (a,b) Reads bit b from address a. store-memory-bit (a,b,c) Writes c to bit b of address a saturated (n) Performs saturated processing of n. (n is 2's complements). Result of calculation of n: If n is n 7FFFFFFFH as result of calculation, 7FFFFFFFH. If n is n 80000000H as result of calculation, 80000000H. result Reflects result to a flag. Byte Byte (8 bits) Halfword Halfword (16 bits) Word Word (32 bits) + Add - Subtract || Bit concatenation x Multiply / Divide AND Logical product OR Logical sum XOR Exclusive logical sum NOT Logical negate logically shift left by Logical left shift logically shift right by Logical right shift arithmetically shift right by Arithmetic right shift 652 User's Manual U13850EJ6V0UD APPENDIX C INSTRUCTION SET LIST Table C-4. Symbols Used for Flag Operation Symbol (blank) Description Not affected 0 Cleared to 0 x Set of cleared according to result R Previously saved value is restored Table C-5. Condition Codes Condition Name (cond) Condition Code (cccc) Conditional Expression Description V 0000 OV = 1 Overflow NV 1000 OV = 0 No overflow C/L 0001 CY = 1 Carry Lower (Less than) NC/NL 1001 CY = 0 No carry No lower (Greater than or equal) Z/E 0010 Z=1 Zero Equal NZ/NE 1010 Z=0 Not zero Not equal NH 0011 (CY OR Z) = 1 Not higher (Less than or equal) H 1011 (CY OR Z) = 0 Higher (Greater than) N 0100 S=1 Negative P 1100 S=0 Positive T 0101 SA 1101 SAT = 1 Saturated LT 0110 (S XOR OV) = 1 Less than signed GE 1110 (S XOR OV) = 0 Greater than or equal signed LE 0111 ( (S XOR OV) OR Z) = 1 Less than or equal signed GT 1111 ( (S XOR OV) OR Z) = 0 Greater than signed - User's Manual U13850EJ6V0UD Always (unconditional) 653 APPENDIX C INSTRUCTION SET LIST Instruction Set List (1/4) Instruction Group Load/store Arithmetic operation Notes 1. 654 Mnemonic Operand Opcode Operation Flag CY OV S SLD.B adr ep + zero-extend (disp7) disp7 [ep], reg2 rrrrr0110ddddddd SLD.H disp8 [ep], reg2 rrrrr1000ddddddd adr ep + zero-extend (disp8) (Note 1) GR [reg2] sign-extend (Load-memory (adr, Halfword)) SLD.W disp8 [ep], reg2 rrrrr1010dddddd0 adr ep + zero-extend (disp8) (Note 2) GR [reg2] Load-memory (adr, Word) LD.B disp16 rrrrr111000RRRRR [reg1], reg2 dddddddddddddddd GR [reg2] sign-extend (Load-memory (adr, Byte)) adr GR [reg1] + sign-extend (disp16) GR [reg2] sign-extend (Load-memory (adr, Byte)) LD.H adr GR [reg1] + sign-extend (disp16) disp16 rrrrr111001RRRRR [reg1], reg2 ddddddddddddddd0 GR [reg2] sign-extend (Load-memory (Note 3) (adr, Halfword)) LD.W adr GR [reg1] + sign-extend (disp16) disp16 rrrrr111001RRRRR [reg1], reg2 ddddddddddddddd1 GR [reg2] Load-memory (adr, Word)) (Note 3) SST.B reg2, disp7 [ep] rrrrr0111ddddddd SST.H reg2, disp8 [ep] rrrrr1001ddddddd adr ep + zero-extend (disp8) (Note 1) Store-memory (adr, GR [reg2], Halfword) SST.W reg2, disp8 [ep] rrrrr1010dddddd1 adr ep + zero-extend (disp8) (Note 2) Store-memory (adr, GR [reg2], Word) ST.B reg2, disp16 [reg1] rrrrr111010RRRRR dddddddddddddddd ST.H reg2, disp16 [reg1] adr GR [reg1] + sign-extend (disp16) rrrrr111011RRRRR ddddddddddddddd0 Store-memory (adr, GR [reg2], Halfword) (Note 3) ST.W reg2, disp16 [reg1] adr GR [reg1] + sign-extend (disp16) rrrrr111011RRRRR ddddddddddddddd1 Store-memory (adr, GR [reg2], Word) (Note 3) MOV reg1, reg2 rrrrr000000RRRRR MOV imm5, reg2 rrrrr010000iiiii GR [reg2] sign-extend (imm5) MOVHI imm16, reg1, reg2 rrrrr110010RRRRR iiiiiiiiiiiiiiii GR [reg2] GR [reg1] + (imm16 || 016) MOVEA imm16, reg1, reg2 rrrrr110001RRRRR iiiiiiiiiiiiiiii GR [reg2] GR [reg1] + sign-extend (imm16) adr ep + zero-extend (disp7) Store-memory (adr, GR [reg2], Byte) adr GR [reg1] + sign-extend (disp16) Store-memory (adr, GR [reg2], Byte) GR [reg2] GR [reg1] ddddddd is the higher 7 bits of disp8. 2. dddddd is the higher 6 bits of disp8. 3. ddddddddddddddd is the higher 15 bits of disp16. User's Manual U13850EJ6V0UD Z SAT APPENDIX C INSTRUCTION SET LIST Instruction Set List (2/4) Instruction Group Arithmetic operation Mnemonic Operand Opcode Operation Flag CY OV S Z SAT GR [reg2] GR [reg2] + GR [reg1] x x x x imm5, reg2 rrrrr010010iiiii GR [reg2] GR [reg2] + sign-extend (imm5) x x x x imm16, reg1, reg2 rrrrr110000RRRRR GR [reg2] GR [reg1] + sign-extend (imm16) x x x x iiiiiiiiiiiiiiii SUB reg1, reg2 rrrrr001101RRRRR GR [reg2] GR [reg2] - GR [reg1] x x x x SUBR reg1, reg2 rrrrr001100RRRRR GR [reg2] GR [reg1] - GR [reg2] x x x x x x x ADD reg1, reg2 ADD ADDI MULH reg1,reg2 rrrrr001110RRRRR rrrrr000111RRRRR GR [reg2] GR [reg2] Note x GR [reg1] Note (Signed multiplication) MULH imm5, reg2 rrrrr010111iiiii GR [reg2] GR [reg2] (imm5) MULHI DIVH Note x sign-extend (Signed multiplication) Note x imm16 imm16, reg1, reg2 rrrrr110111RRRRR iiiiiiiiiiiiiiii GR [reg2] GR [reg1] reg1, reg2 rrrrr000010RRRRR GR [reg2] GR [reg2] / GR [reg2] (Signed multiplication) Note (Signed division) result GR [reg2] - GR [reg1] x x x x imm5, reg2 rrrrr010011iiiii result GR [reg2] - sign-extend (imm5) x x x x cccc, reg2 if conditions are satisfied then GR [reg2] 00000001H GR [reg2] saturated (GR [reg2] + GR [reg1]) x x x x x CMP reg1, reg2 CMP SETF rrrrr001111RRRRR rrrrr1111110cccc 0000000000000000 else GR [reg2] 00000000H Saturated operation Logic operation SATADD reg1, reg2 rrrrr000110RRRRR SATADD imm5, reg2 rrrrr010001iiiii GR [reg2] saturated (GR [reg2] + signextend (imm5)) x x x x x SATSUB reg1, reg2 rrrrr000101RRRRR GR [reg2] saturated (GR [reg2] - GR [reg1]) x x x x x SATSUBI imm16, reg1, reg2 rrrrr110011RRRRR iiiiiiiiiiiiiiii GR [reg2] saturated (GR [reg1] - signextend (imm16)) x x x x x SATSUBR reg1, reg2 rrrrr000100RRRRR GR [reg2] saturated (GR [reg1] - GR [reg2]) x x x x x TST reg1, reg2 rrrrr001011RRRRR result GR [reg2] AND GR [reg1] 0 x x OR reg1, reg2 rrrrr001000RRRRR GR [reg2] GR [reg2] OR GR [reg1] 0 x x ORI imm16, reg1, reg2 rrrrr110100RRRRR iiiiiiiiiiiiiiii GR [reg2] GR [reg1] OR zero-extend (imm16) 0 x x AND reg1, reg2 rrrrr001010RRRRR GR [reg2] GR [reg2] AND GR [reg1] 0 x x ANDI imm16, reg1, reg2 rrrrr110110RRRRR iiiiiiiiiiiiiiii GR [reg2] GR [reg1] AND zero-extend (imm16) 0 0 x Note Only the lower halfword data is valid. User's Manual U13850EJ6V0UD 655 APPENDIX C INSTRUCTION SET LIST Instruction Set List (3/4) Instruction Group Logic operation Mnemonic Operand Opcode Operation Flag CY OV S Z SAT XOR reg1, reg2 rrrrr001001RRRRR GR [reg2] GR [reg2] XOR GR [reg1] 0 x x XORI imm16, reg1, reg2 rrrrr110101RRRRR iiiiiiiiiiiiiiii GR [reg2] GR [reg1] XOR zero-extend (imm16) 0 x x NOT reg1, reg2 rrrrr000001RRRRR GR [reg2] NOT (GR [reg1]) 0 x x SHL reg1, reg2 rrrrr111111RRRRR 0000000011000000 GR [reg2] GR [reg2] logically shift left by GR [reg1]) x 0 x x SHL imm5, reg2 rrrrr010110iiiii GR [reg2] GR [reg2] logically shift left x 0 x x GR [reg2] GR [reg2] logically shift right by GR [reg1] x 0 x x GR [reg2] GR [reg2] logically shift right x 0 x x GR [reg2] GR [reg2] arithmetically shift right by GR [reg1] x 0 x x GR [reg2] GR [reg2] arithmetically shift right by zero-extend (imm5) x 0 x x by zero-extend (imm5) SHR reg1, reg2 rrrrr1111111cccc 0000000010000000 SHR imm5, reg2 rrrrr010100iiiii by zero-extend (imm5) Jump Bit manipulate SAR reg1, reg2 rrrrr111111RRRRR 0000000010100000 SAR imm5, reg2 rrrrr010101iiiii JMP [reg1] 00000000011RRRRR PC GR [reg1] JR disp22 0000011110dddddd PC PC + sign-extend (disp22) ddddddddddddddd0 (Note 1) JARL disp22, reg2 GR [reg2] PC + 4 rrrrr11110dddddd ddddddddddddddd0 PC PC + sign-extend (disp22) (Note 1) Bcond disp9 ddddd1011dddcccc if conditions are satisfied (Note 2) then PC PC + sign-extend (disp9) SET1 bit#3, disp16 [reg1] 00bbb111110RRRRR adr GR [reg1] + sign-extend (disp16) dddddddddddddddd Z flag Not (Load-memory-bit (adr, bit#3) x Store memory-bit (adr, bit#3, 1) CLR1 bit#3, disp16 [reg1] 10bbb111110RRRRR adr GR [reg1] + sign-extend (disp16) dddddddddddddddd Z flag Not (Load-memory-bit (adr, bit#3)) x Store memory-bit (adr, bit#3, 0) NOT1 bit#3, disp16 [reg1] 01bbb111110RRRRR adr GR [reg1] + sign-extend (disp16) dddddddddddddddd Z flag Not (Load-memory-bit (adr, bit#3)) x Store-memory-bit (adr, bit#3, Z flag) TST1 Notes 1. 2. 656 bit#3, disp16 [reg1] 11bbb111110RRRRR adr GR [reg1] + sign-extend (disp16) dddddddddddddddd Z flag Not (Load-memory-bit (adr, bit#3)) ddddddddddddddddddddd is the higher 21 bits of dip22. dddddddd is the higher 8 bits of disp9. User's Manual U13850EJ6V0UD x APPENDIX C INSTRUCTION SET LIST Instruction Set List (4/4) Instruction Group Special Mnemonic Operand Opcode Operation Flag CY OV S LDSR reg2, regID rrrrr111111RRRRR SR [regID] GR 0000000000100000 [reg2] (Note) Z SAT regID = EIPC, FEPC regID = EIPSW, FEPSW regID = PSW STSR regID, reg2 rrrrr111111RRRRR 0000000001000000 GR [reg2] SR [regID] TRAP vector 00000111111iiiii 0000000100000000 EIPC PC + 4 (Restored PC) EIPSW PSW ECR.EICC Interrupt code PSW.EP 1 PSW.ID 1 PC 00000040H (vector = 00H to 0FH) x x x x x R R R R R 00000050H (vector = 10H to 1FH) RETI 0000011111100000 0000000101000000 if PSW.EP = 1 then PC EIPC PSW EIPSW else if PSW.NP = 1 then PC FEPC PSW FEPSW else PC EIPC PSW EIPSW HALT 0000011111100000 0000000100100000 Stops DI 0000011111100000 0000000101100000 PSW.ID 1 1000011111100000 0000000101100000 PSW.ID 0 0000000000000000 Uses 1 clock cycle without doing anything EI NOP (Maskable interrupt disabled) (Maskable interrupt enabled) Note The opcode of this instruction uses the field of reg1 through the source register is shown as reg2 in the above table. Therefore, the meaning of register specification for mnemonic description and opcode is different from that of the other instructions. rrr = regID specification RRRRR = reg2 specification User's Manual U13850EJ6V0UD 657 APPENDIX D INDEX [Number] ANI0 to ANI11 ------------------------------------------------ 86 16-bit capture/compare register n0 -------------------- 203 Arbitration ---------------------------------------------------- 319 16-bit capture/compare register n1 -------------------- 204 ASCK0 --------------------------------------------------------- 82 16-bit compare register 23 ------------------------------- 250 ASCK1 --------------------------------------------------------- 83 16-bit compare register 45 ------------------------------- 250 ASIM0, ASIM1 ---------------------------------------------- 402 16-bit compare register 67 ------------------------------- 250 ASIS0, ASIS1 ----------------------------------------------- 403 16-bit counter 23 ------------------------------------------- 250 ASTB ----------------------------------------------------------- 88 16-bit counter 45 ------------------------------------------- 250 Asynchronous serial interface -------------------------- 399 16-bit counter 67 ------------------------------------------- 250 Asynchronous serial interface mode 16-bit timer --------------------------------------------------- 200 registers 0, 1 ------------------------------------------------ 402 16-bit timer mode control registers 0, 1 -------------- 205 Asynchronous serial interface status 16-bit timer output control registers 0, 1 ------------- 208 registers 0, 1 ------------------------------------------------ 403 16-bit timer registers 0, 1 -------------------------------- 202 AVDD ------------------------------------------------------------ 90 3-wire serial I/O --------------------------------------------- 268 AVREF ----------------------------------------------------------- 91 3-wire variable-length serial I/O ------------------------ 419 AVSS ------------------------------------------------------------- 91 8-bit compare registers 2 to 7 --------------------------- 236 8-bit counters 2 to 7 ---------------------------------------- 236 [B] 8-bit timer ----------------------------------------------------- 234 Baud rate generator control registers 0, 1 ---------- 404 8-bit timer mode control registers 2 to 7 -------------- 240 Baud rate generator mode control registers n0, n1 -------------------------------------------- 405 [A] Baud rate generator source clock selection A/D conversion result register -------------------------- 433 register 4 ----------------------------------------------------- 424 A/D conversion result register H ----------------------- 433 Baud rate generator output clock selection A/D converter ----------------------------------------------- 431 register 4 ----------------------------------------------------- 425 A/D converter mode register 1 -------------------------- 435 BCC ----------------------------------------------------------- 134 A/D converter mode register 2 -------------------------- 437 BCR ----------------------------------------------------------- 561 A1 to A4 --------------------------------------------------------90 BCU -------------------------------------------------------- 40, 50 A13 to A15 -----------------------------------------------------84 BRGC0, BRGC1 ------------------------------------------- 404 A16 to A21 -----------------------------------------------------86 BRGCK4 ----------------------------------------------------- 425 A5 to A12 -------------------------------------------------------89 BRGCN4 ----------------------------------------------------- 424 Absolute maximum ratings ------------------------------- 600 BRGMCn0, BRGMCn1 ----------------------------------- 405 AC characteristics ------------------------------------------ 612 Bus control function --------------------------------------- 128 Access clock ------------------------------------------------- 129 Bus control pin --------------------------------------------- 128 AD0 to AD7 ----------------------------------------------------85 Bus control unit ------------------------------------------40,50 AD8 to AD15 --------------------------------------------------85 Bus cycle control register -------------------------------- 134 ADCR --------------------------------------------------------- 433 Bus hold function ------------------------------------------ 135 ADCRH ------------------------------------------------------- 433 Bus priority -------------------------------------------------- 144 Address match detection method ---------------------- 318 Bus timing --------------------------------------------------- 137 Address space ---------------------------------------------- 103 Bus width ---------------------------------------------------- 130 ADIC --------------------------------------------------162 to 164 BVDD ------------------------------------------------------------ 91 ADM1 --------------------------------------------------------- 435 BVSS ------------------------------------------------------------- 91 ADM2 --------------------------------------------------------- 437 Byte access ------------------------------------------------- 130 ADS ------------------------------------------------------------ 437 ADTRG ---------------------------------------------------------81 [C] Analog input channel specification register --------- 437 Capture/compare control registers 0, 1 -------------- 207 658 User's Manual U13850EJ6V0UD APPENDIX D INDEX CCR ----------------------------------------------------------- 582 DMA transfer request control block --------------------452 CDR ----------------------------------------------------------- 565 DMAIC0 to DMAIC5 ----------------------------- 162 to 164 CG ---------------------------------------------------------- 40, 51 DMA start factor expansion register -------------------459 Channel control block ------------------------------------- 452 DMAS ---------------------------------------------------------459 CLKOUT ------------------------------------------------------- 90 DR --------------------------------------------------------------571 Clock generation function ------------------------------- 182 DRA0 to DRA5 ----------------------------------------------454 Clock generator (CG) ---------------------------------- 40, 51 DSTB ----------------------------------------------------------- 87 Clock output function ------------------------------------- 183 DWC -----------------------------------------------------------132 Command register ----------------------------------------- 127 Communication command ------------------------------ 539 [E] Communication mode ------------------------------------- 525 ECR ------------------------------------------------------------- 99 Communication reservation ----------------------------- 321 EGN0 --------------------------------------------------- 154, 477 Convertion time --------------------------------------------- 450 EGP0 --------------------------------------------------- 154, 477 CORAD0 to CORAD3 ------------------------------------ 521 EIPC ------------------------------------------------------------ 99 CORCN ------------------------------------------------------ 519 EIPSW --------------------------------------------------------- 99 Correction address registers 0 to 3 ------------------- 521 EP flag ---------------------------------------------------------171 Correction control register ------------------------------- 519 Error detection ----------------------------------------------318 Correction request register ------------------------------ 520 EVDD ------------------------------------------------------------ 91 CORRQ ------------------------------------------------------ 520 EVSS ------------------------------------------------------------ 91 CPU -------------------------------------------------------- 40, 50 Exception trap -----------------------------------------------171 CPU address space -------------------------------------- 103 Extension code ---------------------------------------------318 CPU register set --------------------------------------------- 97 External expansion mode --------------------------------114 CR20 to CR70 ---------------------------------------------- 236 External memory -------------------------------------------113 CR23, CR45, CR67 --------------------------------------- 250 External wait function -------------------------------------133 CRC0, CRC1 ----------------------------------------------- 207 CRn0 ---------------------------------------------------------- 203 [F] CRn1 ---------------------------------------------------------- 204 Falling edge specification register 0 ----------- 154, 477 CSI0 to CSI3 ------------------------------------------------ 268 FEPC ----------------------------------------------------------- 99 CSI4 ----------------------------------------------------------- 419 FEPSW -------------------------------------------------------- 99 CSIB4 --------------------------------------------------------- 423 Flash memory -----------------------------------------------523 CSIC0 to CSIC4 ---------------------------------- 162 to 164 Flash memory control -------------------------------------537 CSIM0 to CSIM3 ------------------------------------------- 270 Flash memory programming mode ------------- 102, 538 CSIM4 -------------------------------------------------------- 422 Full-scale error-----------------------------------------------449 CSIS0 to CSIS3 -------------------------------------------- 270 [G] [D] General-purpose register --------------------------------- 98 Data wait control register -------------------------------- 132 DBC0 to DBC5 --------------------------------------------- 459 [H] DC characteristics------------------------------------------ 606 Halfword access --------------------------------------------130 DCHC0 to DCHC5 ---------------------------------------- 460 HALT mode ------------------------------------------- 188, 189 Differential linearity error --------------------------------- 449 Handling of unused pins ---------------------------------- 69 DIOA0 to DIOA5 ------------------------------------------- 453 Hardware start ----------------------------------------------431 DLR ----------------------------------------------------------- 569 HLDAK --------------------------------------------------------- 88 DMA function ---------------------------------------------- 451 HLDRQ -------------------------------------------------------- 88 DMA byte count registers 0 to 5 ----------------------- 459 How to read A/D converter characteristics table----447 DMA channel control registers 0 to 5 ---------------- 460 DMA internal RAM address registers 0 to 5 -------- 454 [I] DMA peripheral I/O address registers 0 to 5 ------- 453 I C bus --------------------------------------------------------275 2 User's Manual U13850EJ6V0UD 659 APPENDIX D INDEX 2 Internal ROM area ----------------------------------------- 107 I C interrupt request --------------------------------------- 299 2 Interrupt control register ------------------------ 162 to 164 IC -----------------------------------------------------------------91 Interrupt controller -------------------------------------- 40, 50 ID flag ---------------------------------------------------------- 165 Interrupt request signal generator --------------------- 279 IDLE mode -------------------------------------------- 188, 192 Interrupt source register ----------------------------------- 99 Idle state insertion function ------------------------------ 134 Interrupt status saving register --------------------------- 99 IEBIC1 -----------------------------------------------162 to 164 Interrupt/exception processing function ------------- 146 IEBIC2 -----------------------------------------------162 to 164 Interval timer mode ---------------------------------------- 261 IEBus clock selection register -------------------------- 582 INTP0 to INTP6 ---------------------------------------------- 81 IEBus communication count register ----------------- 582 ISPR ---------------------------------------------------------- 165 IEBus control data register ------------------------------ 565 ISR ------------------------------------------------------------ 575 I C bus mode ------------------------------------------------ 275 IEBus control register ------------------------------------- 561 IEBus controller -------------------------------------------- 541 [K] IEBus data register ---------------------------------------- 571 Key interrupt function ------------------------------------- 180 IEBus high-speed clock selection register ----------- 583 Key return mode register -------------------------------- 180 IEBus interrupt status register -------------------------- 575 KR0 to KR7 --------------------------------------------------- 89 IEBus partner address register ------------------------- 565 KRIC ------------------------------------------------- 162 to 164 IEBus slave address register -------------------- 433, 564 KRM ----------------------------------------------------------- 180 IEBus slave status register ------------------------------ 580 IEBus success count register --------------------------- 581 [L] IEBus telegraph length register ------------------------ 569 LBEN ----------------------------------------------------------- 87 IEBus unit address register ----------------------------- 564 Low power consumption mode ------------------------ 443 IEBus unit status register -------------------------------- 572 IECLK --------------------------------------------------------- 582 [M] IEHCLK-------------------------------------------------------- 583 Main clock oscillator -------------------------------------- 182 IERX -------------------------------------------------------------89 MAM ---------------------------------------------------------- 116 IETX -------------------------------------------------------------89 Maskable interrupt ---------------------------------------- 155 IIC clock expansion registers 0, 1 -------------- 289, 350 Memory address output mode register -------------- 116 IIC clock selection registers 0, 1 ---------------- 288, 349 Memory block function ----------------------------------- 131 IIC control registers 0, 1 ---------------------------------- 339 Memory boundary operation condition --------------- 145 IIC flag registers 0, 1--------------------------------------- 347 Memory expansion mode register --------------------- 115 IIC function expansion registers 0, 1 ----------- 289, 350 Memory map ------------------------------------------------ 106 IIC shift registers 0, 1 ------------------------------------- 278 MM ------------------------------------------------------------ 115 IIC status registers 0, 1 ---------------------------- 285, 344 Multiple interrupt ------------------------------------------- 174 IIC0, IIC1 --------------------------------------- 278, 291, 351 IICC0, IICC1 ------------------------------------------ 280, 339 [N] IICCE0, IICCE1 -------------------------------------- 289, 350 NCC ----------------------------------------------------------- 167 IICCL0, IICCL1 -------------------------------------- 288, 349 NMI -------------------------------------------------------------- 81 IICF0, IICF1 -------------------------------------------------- 347 NMI status saving register -------------------------------- 99 IICIC1 ------------------------------------------------162 to 164 Noise elimination control register --------------------- 167 IICS0, IICS1 ------------------------------------------ 285, 344 Non-maskable interrupt ---------------------------------- 149 IICX0, IICX1 ------------------------------------------ 289, 350 Normal operation mode ---------------------------------- 102 Illegal opcode ----------------------------------------------- 171 Image --------------------------------------------------------- 104 [O] In-service priority register -------------------------------- 165 Off-board programming ---------------------------------- 525 INTC ------------------------------------------------------- 40, 50 On-board programming ---------------------------------- 525 Integral linearity error -------------------------------------- 450 On-chip peripheral I/O area ----------------------------- 112 Internal RAM area ----------------------------------------- 110 Operation mode -------------------------------------------- 102 660 User's Manual U13850EJ6V0UD APPENDIX D INDEX Oscillation stabilization time ---------------------------- 196 PM3 ------------------------------------------------------------489 Oscillation stabilization time PM4 ------------------------------------------------------------493 selection register ----------------------------- 187, 262, 267 PM5 ------------------------------------------------------------493 OSTS -------------------------------------------- 187, 262, 267 PM6 ------------------------------------------------------------496 Overall error ------------------------------------------------- 447 PM9 ------------------------------------------------------------501 Port -------------------------------------------------------- 42, 52 [P] Port 0 ----------------------------------------------------------474 P0 -------------------------------------------------------------- 474 Port 0 mode register ---------------------------------------476 P00 to P07 ---------------------------------------------------- 81 Port 1 ----------------------------------------------------------479 P1 -------------------------------------------------------------- 479 Port 1 function register -----------------------------------481 P10 ------------------------------------------------------------ 503 Port 1 mode register ---------------------------------------480 P10 to P15 ---------------------------------------------------- 82 Port 10 --------------------------------------------------------503 P100 to P107 ------------------------------------------------- 89 Port 10 function register ----------------------------------505 P11 ------------------------------------------------------------ 507 Port 10 mode register -------------------------------------504 P110 to P113 ------------------------------------------------- 90 Port 11 --------------------------------------------------------507 P2 -------------------------------------------------------------- 483 Port 11 mode register -------------------------------------508 P20 to P27 ---------------------------------------------------- 83 Port 2 ----------------------------------------------------------483 P3 -------------------------------------------------------------- 488 Port 2 function register -----------------------------------485 P30 to P37 ---------------------------------------------------- 84 Port 2 mode register ---------------------------------------484 P4 -------------------------------------------------------------- 492 Port 3 ----------------------------------------------------------488 P40 to P47 ---------------------------------------------------- 85 Port 3 function register -----------------------------------490 P5 -------------------------------------------------------------- 492 Port 3 mode register ---------------------------------------489 P50 to P57 ---------------------------------------------------- 85 Port 4 ----------------------------------------------------------492 P6 -------------------------------------------------------------- 495 Port 4 mode register ---------------------------------------493 P60 to P65 ---------------------------------------------------- 86 Port 5 ----------------------------------------------------------492 P7 -------------------------------------------------------------- 498 Port 5 mode register ---------------------------------------493 P70 to P77 ---------------------------------------------------- 86 Port 6 ----------------------------------------------------------495 P8 -------------------------------------------------------------- 498 Port 6 mode register ---------------------------------------496 P80 to P83 ---------------------------------------------------- 86 Port 7 ----------------------------------------------------------498 P9 -------------------------------------------------------------- 500 Port 8 ----------------------------------------------------------498 P90 to P96 ---------------------------------------------------- 87 Port 9 ----------------------------------------------------------500 PAC ----------------------------------------------------------- 509 Port 9 mode register ---------------------------------------501 PAR ----------------------------------------------------------- 565 Port alternate function control register ---------------509 PCC ----------------------------------------------------------- 184 Power save control register -----------------------------186 Peripheral I/O registers ---------------------------------- 119 Power save function ---------------------------------------188 PF1 ------------------------------------------------------------ 481 PRCMD -------------------------------------------------------127 PF10 ---------------------------------------------------------- 505 Prescaler mode register 0n ------------------------------209 PF2 ------------------------------------------------------------ 485 Prescaler mode register 1n ------------------------------210 PF3 ------------------------------------------------------------ 490 Priority control -----------------------------------------------174 PIC0 to PIC6 --------------------------------------- 162 to 164 PRM0n --------------------------------------------------------209 Pin function ---------------------------------------------------- 73 PRM1n --------------------------------------------------------210 Pin I/O buffer power supply ------------------------------- 92 Processor clock control register ------------------------184 Pin I/O circuit type ------------------------------------------- 92 Program counter -------------------------------------------- 98 PM0 ----------------------------------------------------------- 476 Program register set ---------------------------------------- 98 PM1 ----------------------------------------------------------- 480 Program status word --------------------------------------100 PM10 --------------------------------------------------------- 504 Programmable wait function -----------------------------132 PM11 --------------------------------------------------------- 508 Programming environment ------------------------------530 PM2 ----------------------------------------------------------- 484 Programming method -------------------------------------537 User's Manual U13850EJ6V0UD 661 APPENDIX D INDEX PSC ------------------------------------------------------------ 186 RXB0, RXB1 ------------------------------------------------ 400 PSW ----------------------------------------------------------- 100 RXD0 ----------------------------------------------------------- 82 PU0 ------------------------------------------------------------ 476 RXD1 ----------------------------------------------------------- 83 PU1 ------------------------------------------------------------ 480 PU10 ---------------------------------------------------------- 505 [S] PU11 ---------------------------------------------------------- 509 Sampling time ----------------------------------------------- 450 PU2 ------------------------------------------------------------ 485 SAR -----------------------------------------------------433, 564 PU3 ------------------------------------------------------------ 489 SCK0, SCK1 -------------------------------------------------- 82 Pull-up resistor option register 0 ----------------------- 476 SCK2, SCK3 -------------------------------------------------- 83 Pull-up resistor option register 1 ----------------------- 480 SCK4 ----------------------------------------------------------- 84 Pull-up resistor option register 10 --------------------- 505 SCL0 ------------------------------------------------------------ 82 Pull-up resistor option register 11 --------------------- 509 SCL1 ------------------------------------------------------------ 83 Pull-up resistor option register 2 ----------------------- 485 SCR ----------------------------------------------------------- 581 Pull-up resistor option register 3 ----------------------- 489 SDA0 ----------------------------------------------------------- 82 SDA1 ----------------------------------------------------------- 83 [Q] Serial clock counter --------------------------------------- 278 Quantization error ------------------------------------------ 448 Serial clock selection registers 0 to 3 ---------------- 270 Serial I/O shift registers 0 to 3 -------------------------- 269 [R] Serial interface function ---------------------------------- 268 R/W --------------------------------------------------------------87 Serial operation mode registers 0 to 3 --------------- 270 RAM ------------------------------------------------------- 40, 50 SERIC0, SERIC1 --------------------------------- 162 to 164 RD ---------------------------------------------------------------88 SI0, SI1 --------------------------------------------------------- 82 Real-time output buffer register H --------------------- 468 SI2, SI3 --------------------------------------------------------- 83 Real-time output buffer register L ---------------------- 468 SI4 --------------------------------------------------------------- 84 Real-time output function -------------------------------- 466 Single-chip mode ------------------------------------------ 102 Real-time output port control register ----------------- 470 SIO0 to SIO3 ----------------------------------------------- 269 Real-time output port mode register ------------------ 469 SIO4 ---------------------------------------------------------- 420 Receive buffer registers 0, 1 ---------------------------- 400 Slave address registers 0, 1 --------------- 278, 291, 352 Receive shift registers 0, 1 ------------------------------ 400 SO latch ------------------------------------------------------ 278 Recommended soldering conditions------------------- 637 SO0, SO1 ------------------------------------------------------ 82 Recommended use of address space ---------------- 117 SO2, SO3 ------------------------------------------------------ 83 REGC -----------------------------------------------------------90 SO4 ------------------------------------------------------------- 84 Regulator ----------------------------------------------------- 517 Software exception ---------------------------------------- 169 RESET ----------------------------------------------------------90 Software start ----------------------------------------------- 431 Reset function ---------------------------------------------- 516 Software STOP mode ------------------------------188, 194 Resolution ---------------------------------------------------- 447 Specific register -------------------------------------------- 126 Rising edge specification register 0 ------------ 154, 477 SSR ----------------------------------------------------------- 580 ROM ------------------------------------------------------- 40, 50 Standby function ------------------------------------------- 418 ROM correction function --------------------------------- 518 Start condition ---------------------------------------------- 293 RTBH ---------------------------------------------------------- 468 STIC0, STIC1 -------------------------------------- 162 to 164 RTBL ---------------------------------------------------------- 468 Stop condition ---------------------------------------------- 296 RTO ----------------------------------------------------------- 466 Subclock oscillator ---------------------------------------- 182 RTP -------------------------------------------------------- 41, 52 Successive approximation register -------------433, 564 RTP0 to RTP7 ------------------------------------------------89 SVA0, SVA1 ----------------------------------- 278, 291, 352 RTPC ---------------------------------------------------------- 470 SYC ----------------------------------------------------------- 129 RTPM --------------------------------------------------------- 469 SYS ----------------------------------------------------------- 127 RTPTRG -------------------------------------------------------81 System control register ---------------------------------- 129 RX0, RX1 ---------------------------------------------------- 400 System register set ----------------------------------------- 99 662 User's Manual U13850EJ6V0UD APPENDIX D System status register ----------------------------------- 127 INDEX VDD -------------------------------------------------------------- 91 VPP -------------------------------------------------------------- 91 [T] VSS -------------------------------------------------------------- 91 TCL20 to TCL70 ------------------------------------------- 237 TCL21 to TCL71 ------------------------------------------- 237 [W] TI00, TI01, TI10, TI11, TI4, TI5 -------------------------- 84 WAIT ----------------------------------------------------------- 90 TI2, TI3 --------------------------------------------------------- 83 Wait function ------------------------------------------------132 Timer clock selection registers 20 to 70 ------------- 237 Wakeup controller ------------------------------------------278 Timer clock selection registers 21 to 71 ------------- 237 Wakeup function -------------------------------------------320 Timer/counter function ----------------------------------- 200 Watch timer clock selection register ------------------257 TM0, TM1 ---------------------------------------------------- 202 Watch timer function --------------------------------------253 TM2 to TM7 ------------------------------------------------- 236 Watch timer high-speed clock selection register ---256 TM23, TM45, TM67 --------------------------------------- 250 Watch timer mode control register ---------------------255 TMC0, TMC1 ----------------------------------------------- 205 Watchdog timer clock selection register -------------263 TMC2 to TMC7 --------------------------------------------- 240 Watchdog timer function ---------------------------------260 TMIC00 ---------------------------------------------- 162 to 164 Watchdog timer mode ------------------------------------261 TMIC01 ---------------------------------------------- 162 to 164 Watchdog timer mode register ------------------ 166, 264 TMIC10 ---------------------------------------------- 162 to 164 WDCS ---------------------------------------------------------263 TMIC11 ---------------------------------------------- 162 to 164 WDTIC ---------------------------------------------- 162 to 164 TMIC2 to TMIC7 ---------------------------------- 162 to 164 WDTM -------------------------------------------------- 166, 264 TO0, TO1, TO4, TO5 --------------------------------------- 84 Word access ------------------------------------------------130 TO2, TO3 ------------------------------------------------------ 83 Wrap-around of CPU address space -----------------105 TOC0, TOC1 ------------------------------------------------ 208 WRH ------------------------------------------------------------ 88 Transfer completion interrupt request ---------------- 451 Writing with flash programmer --------------------------525 Transmit shift registers 0, 1 ----------------------------- 400 WRL ------------------------------------------------------------ 88 TXD0 ------------------------------------------------------------ 82 WTNCS -------------------------------------------------------257 TXD1 ------------------------------------------------------------ 83 WTNHC--------------------------------------------------------256 TXS0, TXS1 ------------------------------------------------- 400 WTNIC ---------------------------------------------- 162 to 164 WTNIIC --------------------------------------------- 162 to 164 [U] WTNM ---------------------------------------------------------255 UAR ----------------------------------------------------------- 564 UART0, UART1 -------------------------------------------- 399 [X] UBEN ----------------------------------------------------------- 87 X1 --------------------------------------------------------------- 90 USR ----------------------------------------------------------- 572 X2 --------------------------------------------------------------- 90 XT1 ------------------------------------------------------------- 90 [V] XT2 ------------------------------------------------------------- 90 V850/SB1 ------------------------------------------------- 33, 43 V850/SB2 ------------------------------------------------- 53, 63 [Z] Variable-length serial control register 4 -------------- 422 Zero-scale error ---------------------------------------------448 Variable-length serial I/O shift register 4 ------------- 420 Variable-length serial setting register 4 -------------- 423 User's Manual U13850EJ6V0UD 663 APPENDIX E REVISION HISTORY The following table shows the revision history up to this edition. The "Applied to:" column indicates the chapters of each edition in which the revision was applied. (1/5) Edition 4th Major Revisions from Previous Edition Modification of 1.2.3 Ordering information (V850/SB1) Modification of 1.3.3 Ordering information (V850/SB2) Modification of description in 2.3 (5) P40 to P47 (Port 4) Modification of description in 2.3 (6) P50 to P57 (Port 5) Applied to: CHAPTER 1 INTRODUCTION CHAPTER 2 PIN FUNCTIONS Modification of description in 2.3 (7) P60 to P65 (Port 6) Modification of description in 2.3 (9) P90 to P96 (Port 9) Modification of Caution in 2.3 (11) (b) (ii) WAIT (Wait) Addition of 2.3 (14) CLKOUT (Clock Out) Addition of 5.8 (1) Acknowledging interrupt servicing after execution of EI instruction CHAPTER 5 INTERRUPT/ EXCEPTION PROCESSING FUNCTION Addition of 6.6 Notes on Power Save Function CHAPTER 6 CLOCK GENERATION FUNCTION Modification of Caution in 7.1.3 (2) Capture/compare registers n0 (CR00, CR10) CHAPTER 7 TIMER/COUNTER FUNCTION Modification of Caution in 7.1.3 (3) Capture/compare registers n1 (CR01, CR11) Modification of Figure 7-34 Data Hold Timing of Capture Register Addition of 7.2.7 (6) (c) One-shot pulse output function Modification of Figure 11-2 A/D Converter Mode Register 1 (ADM1) Addition of description in 11.5 Low Power Consumption Mode Addition of Caution in CHAPTER 18 FLASH MEMORY CHAPTER 18 FLASH MEMORY Addition of Table 19-5 Acknowledge Signal Output Condition of Control Field CHAPTER 19 IEBus CONTROLLER (V850/SB2) Addition of description 19.1.8 Bit format Modification of Caution in 19.3.2 (1) (a) Communication enable flag (ENIEBUS) Addition of Note in Figure 19-18 Timing of INTIE2 Interrupt Generation in Locked State (for (4) and (5)) Addition of Remark in 19.3.2 (6) IEBus telegraph length register (DLR) Addition of Remark in 19.3.2 (7) IEBus data register (DR) Addition of description in 19.3.2 (7) (a) When transmission unit Modification of description in 19.3.2 (8) (a) Slave request flag (SLVRQ) Addition of Caution in 19.3.2 (8) (b) Arbitration result flag (ARBIT) Addition of description for Caution in 19.3.2 (8) (e) Lock status flag (LOCK) Addition of Table 19-8 Reset Condition of Each Flag of ISR Register Addition of 19.4.3 Communication error source processing list Modification of Figure 19-34 Master Transmission (Interval of Interrupt Occurrence) Modification of Figure 19-35 Master Reception (Interval of Interrupt Occurrence) Modification of Figure 19-36 Slave Transmission (Interval of Interrupt Occurrence) Modification of Figure 19-37 Slave Reception (Interval of Interrupt Occurrence) 664 CHAPTER 11 A/D CONVERTER User's Manual U13850EJ6V0UD APPENDIX E REVISION HISTORY (2/5) Edition 6th Major Revisions from Previous Edition Applied to: * Addition of the following products. PD703030B, 703030BY, 703031B, 703031BY, 703032B, 703032BY, 703033B, 703033BY, 703034B, 703034BY, 703035B, 703035BY, 703036H, 703036HY, 703037H, 703037HY, 70F3030B, 70F3030BY, 70F3032B, 70F3032BY, 70F3033B, 70F3033BY, 70F3035B, 70F3035BY, 70F3036H, 70F3036HY, 70F3037H, 70F3037HY * Deletion of the following products. PD703030A, 703030AY, 703036A, 703036AY Throughout Addition of description on minimum instruction execution time in 1.5.1 CHAPTER 1 INTRODUCTION Addition of description on instruction set in 1.5.1 Addition of description in Table 2-1 Pin I/O Buffer Power Supplies CHAPTER 2 PIN Modification of description and addition of Notes in Table 2-3 Operating States of Pins FUNCTIONS in Each Operating Mode Addition of description in 2.3 (9) (b) (i) LBEN Modification of P23 I/O circuit type and description on P33 in 2.4 Pin I/O Circuit Types, I/O Buffer Power Supplies and Connection of Unused Pins Addition of description on minimum instruction execution time in 3.1 CHAPTER 3 CPU Modification of description and addition of Note in 3.2.2 (2) Program status word (PSW) FUNCTIONS Addition of 3.4.5 (2) (a) V850/SB1 (uPD703031B, 703031BY), V850/SB2 (PD703034B, 703034BY) Modification of Note and addition of registers in 3.4.8 Peripheral I/O registers Addition of description in 3.4.9 Specific registers Modification of [Description example] in 3.4.9 Specific registers Modification of Caution 2 in 3.4.9 Specific registers Addition of Remarks in 3.4.9 (2) (b) Reset conditions (PRERR = 1) Addition of Note and Caution in 4.2.2 (1) System control register (SYC) CHAPTER 4 BUS CONTROL FUNCTION Addition of Remark in 5.3.3 Priorities of maskable interrupts CHAPTER 5 INTERRUPT/ EXCEPTION PROCESSING FUNCTION Addition of Caution 2 in 5.3.4 Interrupt control register (xxICn) Addition of Caution in 5.3.5 In-service priority register (ISPR) Addition of Remark in 5.3.6 ID flag Addition of Remark in 5.6.2 (2) To generate exception in service program Addition of 5.8.1 Interrupt request valid timing after EI instruction Addition of 5.9 Interrupt Control Register Bit Manipulation Instructions During DMA Transfer Addition of description in Cautions in 6.3.1 (1) Processor clock control register (PCC) Modification of description in 6.3.1 (1) (b) Example of subclock operation main clock operation setup CHAPTER 6 CLOCK GENERATION FUNCTION Modification of description in 6.3.1 (2) Power save control register (PSC) Addition and deletion of description in Table 6-1 Operating Statuses in HALT Mode Modification of description in Table 6-2 Operating Statuses in IDLE Mode Addition of description in 6.4.4 (1) Settings and operating states User's Manual U13850EJ6V0UD 665 APPENDIX E REVISION HISTORY (3/5) Edition 6th Major Revisions from Previous Edition Modification of description in Table 6-3 Operating Statuses in Software STOP Mode Addition of 6.6 (1) While an instruction is being executed on internal ROM Applied to: CHAPTER 6 CLOCK GENERATION FUNCTION Addition of 6.6 (2) While an instruction is being executed on external ROM Addition of description in Caution in 7.1.4 (1) 16-bit timer mode control registers 0, 1 (TMC0, TMC1) Addition of description in Caution in 7.1.4 (2) Capture/compare control registers 0, 1 (CRC0, CRC1) CHAPTER 7 TIMER/COUNTER FUNCTION Modification of description in Figure 7-5 (a) 16-bit timer mode control registers 0, 1 (TMC0, TMC1) Addition of Figure 7-6 Configuration of PPG Output Addition of Figure 7-7 PPG Output Operation Timing Modification of description in Figure 7-8 (a) 16-bit timer mode control registers 0, 1 (TMC0, TMC1) Modification of description in Figure 7-11 (a) 16-bit timer mode control registers 0, 1 (TMC0, TMC1) Modification of description in Figure 7-14 (a) 16-bit timer mode control registers 0, 1 (TMC0, TMC1) Modification of description in Figure 7-17 Timing of Pulse Width Measurement by Restarting (with Rising Edge Specified) Modification of description in Figure 7-18 (a) 16-bit timer mode control registers 0, 1 (TMC0, TMC1) Modification of description in Caution in 7.2.6 (2) One-shot pulse output with external trigger Modification of description in 7.2.7 (6) (a) One-shot pulse output by software Modification of description in 7.2.7 (6) (b) One-shot pulse output with external trigger Addition of 7.3.1 Outline Change of Figure 7-32 Timing of Interval Timer Operation (3/3) Addition of description to Remarks in Figure 7-34 Square Wave Output Operation Timing Addition of description to Remarks in Figure 7-35 Timing of PWM Output Addition of registers and Caution in Figure 8-1 Block Diagram of Watch Timer Addition of registers and Note in Table 8-2 Configuration of Watch Timer CHAPTER 8 WATCH TIMER Addition of description and Caution in 8.3 Watch Timer Control Register Addition of 8.3 (2) Watch timer high-speed clock selection register (WTNHC) Addition of description in 8.3 (3) Watch timer clock selection register (WTNCS) Addition of Caution in 9.3 (2) Watchdog timer clock selection register (WDCS) CHAPTER 9 WATCHDOG TIMER Addition of description in 10.2 (2) 3-wire serial I/O mode (fixed to MSB first) CHAPTER 10 SERIAL INTERFACE FUNCTION Modification of Caution in 10.3.2 (1) IIC control registers 0, 1 (IICC0, IICC1) Addition of Caution in 10.3.2 (3) IIC clock selection registers 0, 1 (IICCL0, IICCL1) Addition of 10.4 I2C Bus (B and H Versions) 666 User's Manual U13850EJ6V0UD APPENDIX E REVISION HISTORY (4/5) Edition 6th Major Revisions from Previous Edition Applied to: Addition of description to Cautions in 10.5.2 (1) Asynchronous serial interface mode registers 0, 1 (ASIM0, ASIM1) CHAPTER 10 SERIAL INTERFACE FUNCTION Addition to Cautions in 10.5.2 (4) Baud rate generator mode control registers n0, n1 (BRGMCn0, BRGMCn1) Addition of description to Cautions in Figure 10-45 ASIMn Setting (Operation Stop Mode) Addition of description to Cautions in Figure 10-46 ASIMn Setting (Asynchronous Serial Interface Mode) Addition of description to Cautions in Figure 10-49 BRGMCn0 and BRGMCn1 Settings (Asynchronous Serial Interface Mode) Addition of Caution in 11.3 (2) Analog input channel specification register (ADS) Addition of 11.7 How to Read A/D Converter Characteristics Table Addition of 12.3 Configuration Addition of 12.4 (2) (a) V850/SB1 (PD703031B, 703031BY), V850/SB2 (PD703034B, 703034BY) CHAPTER 11 A/D CONVERTER CHAPTER 12 DMA FUNCTIONS Addition of Caution in 12.4 (5) DMA channel control registers 0 to 5 (DCHC0 to DCHC5) Addition of 12.5 Operation Addition of 12.6 Cautions CHAPTER 13 REALTIME OUTPUT FUNCTION (RTO) Addition of 13.2 Features Addition of 13.3 (2) Output latch Addition of description in 13.5 Usage Addition of 13.7 (3) Addition of description in Table 14-1 Pin I/O Buffer Power Supplies Addition of Caution in 14.2.8 (1) Function of P9 pins CHAPTER 14 PORT FUNCTION Addition of Caution in 14.2.9 (1) Function of P10 pins Addition of description in Table 14-12 Setting When Port Pin is Used as Alternate Function Addition of 14.4 Port Function Operation Addition of description in 16.1 Outline Addition of description in Figure 16-1 Regulator Addition of 18.1.1 (2) V850/SB1 (PD70F3030B, 70F3030BY), V850/SB2 (uPD70F3036H, 70F3036HY) CHAPTER 16 REGULATOR CHAPTER 18 FLASH MEMORY Addition of Figure 18-1 Wiring Example of V850/SB1 and V850/SB2 Flash Writing Adapter (FA-100GC-8EU) Addition of Table 18-1 Table for Wiring of V850/SB1 and V850/SB2 Flash Writing Adapter (FA-100GC-8EU) Addition of Figure 18-2 Wiring Example of V850/SB1 and V850/SB2 Flash Writing Adapter (FA-100GF-3BA) Addition of Figure 18-2 Table for Wiring of V850/SB1 and V850/SB2 Flash Writing Adapter (FA-100GF-3BA) User's Manual U13850EJ6V0UD 667 APPENDIX E REVISION HISTORY (5/5) Edition 6th Major Revisions from Previous Edition Modification of description in Table 19-5 Acknowledge Signal Output Condition of Control Field Addition of register to Table 19-7 Internal Registers of IEBus Controller Applied to: CHAPTER 19 IEBus CONTROLLER (V850/SB2) Addition of Remark in 19.3.2 (13) IEBus clock selection register (IECLK) Addition of 19.3.2 (14) IEBus high-speed clock selection register (IEHCLK) 668 Addition of CHAPTER 20 ELECTRICAL SPECIFICATIONS CHAPTER 20 ELECTRICAL SPECIFICATIONS Addition of CHAPTER 21 PACKAGE DRAWINGS CHAPTER 21 PACKAGE DRAWINGS Addition of CHAPTER 22 RECOMMENDED SOLDERING CONDITIONS CHAPTER 22 RECOMMENDED SOLDERING CONDITIONS Addition of APPENDIX A NOTES ON TARGET SYSTEM DESIGN APPENDIX A NOTES ON TARGET SYSTEM DESIGN Modification of APPENDIX D INDEX APPENDIX D INDEX Addition of APPENDIX E REVISION HISTORY APPENDIX E REVISION HISTORY User's Manual U13850EJ6V0UD