PRELIMINARY Notice: This is not a final specification. Some parametric limits are subject to change. 3803 Group (Spec.H QzROM version) SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER DESCRIPTION The 3803 group (Spec.H QzROM version) is the 8-bit microcomputer based on the 740 family core technology. The 3803 group (Spec.H QzROM version) is designed for household products, office automation equipment, and controlling systems that require analog signal processing, including the serial interface functions, 8/16-bit timer, A/D converter and D/A converter. FEATURES * Basic machine-language instructions ................................. 71 * Minimum instruction execution time .......................... 0.24 s (at 16.8 MHz oscillation frequency) * Memory size QzROM .................................................... 16 K to 48 K bytes RAM ..................................................................... 2048 bytes * Programmable input/output ports ....................................... 56 * Software pull-up resistors ............................................ Built-in * Interrupts .............................................. 21 sources, 16 vectors (external 8, internal 12, software 1) * Timers ...................................................................... 16-bit x 1 8-bit x 4 (with 8-bit prescaler) * Serial interface ......... 8-bit x 2 (UART or Clock-synchronized) 8-bit x 1 (Clock-synchronized) * PWM ....................................... 8-bit x 1 (with 8-bit prescaler) * A/D converter ........................................ 10-bit x 16 channels (8-bit reading enabled) * D/A converter ............................................ 8-bit x 2 channels * Watchdog timer ....................................................... 16-bit x 1 * LED direct drive port..............................................................8 * Clock generating circuit ............................. Built-in 2 circuits (connect to external ceramic resonator or quartz-crystal oscillator) Rev.1.10 Nov 14, 2005 REJ03B0166-0110 Page 1 of 91 REJ03B0166-0110 Rev.1.10 Nov 14, 2005 * Power source voltage [In high-speed mode] At 16.8 MHz oscillation frequency .................... 4.5 to 5.5 V At 12.5 MHz oscillation frequency .................... 4.0 to 5.5 V At 8.4 MHz oscillation frequency ...................... 2.7 to 5.5 V At 4.2 MHz oscillation frequency ...................... 2.2 to 5.5 V At 2.1 MHz oscillation frequency ...................... 2.0 to 5.5 V [In middle-speed mode] At 16.8 MHz oscillation frequency .................... 4.5 to 5.5 V At 12.5 MHz oscillation frequency .................... 2.7 to 5.5 V At 8.4 MHz oscillation frequency ...................... 2.2 to 5.5 V At 6.3 MHz oscillation frequency ...................... 1.8 to 5.5 V [In low-speed mode] At 32 kHz oscillation frequency......................... 1.8 to 5.5 V * Power dissipation In high-speed mode ........................................... 40 mW (typ.) (at 16.8 MHz oscillation frequency, at 5 V power source voltage) In low-speed mode ............................................ 45 W (typ.) (at 32 kHz oscillation frequency, at 3 V power source voltage) * Operating temperature range ............................. -20 to 85 C * Packages SP............................. PRDP0064BA-A (64-pin 750 mil SDIP) HP.................... PLQP0064KB-A (64-pin 10 x 10 mm LQFP) KP....................PLQP0064GA-A (64-pin 14 x 14 mm LQFP) APPLICATION Household products, Consumer electronics, etc. PRELIMINARY Notice: This is not a final specification. Some parametric limits are subject to change. 3803 Group (Spec.H QzROM version) Currently support products are listed below. Table 1 Support products Product name M38039G4H-XXXHP M38039G4H-XXXKP M38039G6H-XXXHP M38039G6H-XXXKP M38039G8H-XXXHP M38039G8H-XXXKP M38039GCH-XXXHP M38039GCH-XXXKP M38039G4HSP M38039G4HHP M38039G4HKP M38039G6HSP M38039G6HHP M38039G6HKP M38039G8HSP M38039G8HHP M38039G8HKP M38039GCHSP M38039GCHHP M38039GCHKP NOTES: QzROM size (bytes) RAM size ROM size for User in ( ) (bytes) 16384 (16254) 24576 (24446) 32768 (32638) 49152 (49022) 16384 (16254) 24576 (24446) 32768 (32638) 49152 (49022) 2048 Package PLQP0064KB-A PLQP0064GA-A PLQP0064KB-A PLQP0064GA-A PLQP0064KB-A PLQP0064GA-A PLQP0064KB-A PLQP0064GA-A PRDP0064BA-A PLQP0064KB-A PLQP0064GA-A PRDP0064BA-A PLQP0064KB-A PLQP0064GA-A PRDP0064BA-A PLQP0064KB-A PLQP0064GA-A PRDP0064BA-A PLQP0064KB-A PLQP0064GA-A 1. This means a shipment of which User ROM has been programmed. 2. The user ROM area of a blank product is blank. Rev.1.10 Nov 14, 2005 REJ03B0166-0110 Page 2 of 91 Remarks QzROM version (Programmed shipment) (1) QzROM version (blank) (2) PRELIMINARY Notice: This is not a final specification. Some parametric limits are subject to change. 3803 Group (Spec.H QzROM version) P00/AN 8 P01/AN 9 P02/AN 10 P03/AN 11 P04/AN 12 P05/AN 13 P06/AN 14 P07/AN 15 P10/INT41 P11/INT01 P12 P13 P14 P15 P16 P17 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 PIN CONFIGURATION (TOP VIEW) P37/SRDY3 49 32 P20(LED0) P36/SCLK3 50 31 P21(LED1) P35/TXD3 51 30 P22(LED2) P34/RXD3 52 29 P23(LED3) P33 53 28 P24(LED4) P32 54 27 P25(LED5) P31/DA2 55 26 P26(LED6) P30/DA1 56 25 P27(LED7) VCC 57 24 VSS VREF 58 23 XOUT AVSS 59 22 XIN P67/AN7 60 21 P40/INT40/XCOUT P66/AN6 61 20 P41/INT00/XCIN P65/AN5 62 19 RESET P64/AN4 63 18 CNVSS P63/AN3 64 17 P42/INT1 15 16 P44 /R XD 1 P4 3/INT 2 10 P5 1/S OUT2 14 9 P5 2/S CLK2 P4 5/T XD 1 8 P5 3/S RDY2 13 7 P54 /CNTR 0 P4 6/S CLK1 6 P55 /CNTR 1 12 5 P5 6/PWM P4 7/S RDY1 /CNTR 2 4 P5 7/INT 3 11 3 P6 0/AN 0 P5 0/S IN2 2 1 P6 2/AN 2 P6 1/AN 1 M38039GXH-XXXHP/KP M38039GXHHP/KP Package type: PLQP0064KB-A (64P6Q-A) PLQP0064GA-A (64P6U-A) Fig 1. Table 2 3803 group (Spec.H QzROM version) pin configuration (PLQP0064KB-A/PLQP0064GA-A) List of package (Spec.H QzROM version) (PLQP0064KB-A/PLQP0064GA-A) Package Product name QzROM size (bytes) ROM size for User in ( ) M38039G4H-XXXHP M38039G4HHP M38039G6H-XXXHP PLQP0064KB-A M38039G6HHP M38039G8H-XXXHP M38039G8HHP M38039GCH-XXXHP M38039GCHHP M38039G4H-XXXKP M38039G4HKP M38039G6H-XXXKP PLQP0064GA-A M38039G6HKP M38039G8H-XXXKP M38039G8HKP M38039GCH-XXXKP M38039GCHKP QzROM version (Programmed shipment)(1) 2048 32768 (32638) QzROM version (Programmed shipment)(1) QzROM version (Programmed shipment)(1) QzROM version (blank)(2) QzROM version (Programmed shipment)(1) 16384 (16254) QzROM version (blank)(2) QzROM version (Programmed shipment)(1) 24576 (24446) 2048 49152 (49022) QzROM version (blank)(2) QzROM version (blank)(2) 49152 (49022) 1. This means a shipment of which User ROM has been programmed. 2. The user ROM area of a blank product is blank. Page 3 of 91 QzROM version (blank)(2) 24576 (24446) 32768 (32638) Remarks QzROM version (Programmed shipment)(1) 16384 (16254) NOTES: Rev.1.10 Nov 14, 2005 REJ03B0166-0110 RAM size (bytes) QzROM version (blank)(2) QzROM version (Programmed shipment)(1) QzROM version (blank)(2) QzROM version (Programmed shipment)(1) QzROM version (blank)(2) PRELIMINARY Notice: This is not a final specification. Some parametric limits are subject to change. 3803 Group (Spec.H QzROM version) PIN CONFIGURATION (TOP VIEW) 1 64 P30/DA1 2 63 P31/DA2 AVSS 3 62 P32 P67/AN7 P66/AN6 P65/AN5 4 61 5 60 P33 P34/RXD3 6 59 P35/TXD3 P64/AN4 7 58 P36/SCLK3 P63/AN3 8 57 P62/AN2 9 56 P61/AN1 P60/AN0 P57/INT3 10 55 P37/SRDY3 P00/AN8 P01/AN9 11 54 12 P56/PWM P55/CNTR1 14 13 M38039GXHSP VCC VREF 52 P02/AN10 P03/AN11 P04/AN12 51 P05/AN13 50 P06/AN14 49 P07/AN15 P10/INT41 P11/INT01 53 P54/CNTR0 P53/SRDY2 16 P52/SCLK2 17 P51/SOUT2 P50/SIN2 18 P47/SRDY1/CNTR2 20 P46/SCLK1 P45/TXD1 21 22 43 P44/RXD1 P43/INT2 P42/INT1 CNVSS 23 42 24 41 15 19 48 47 46 45 44 P12 P13 P14 P15 P16 P17 25 40 26 39 P20(LED0) P21(LED1) RESET 27 38 P22(LED2) P41/INT00/XCIN P40/INT40/XCOUT XIN 28 37 29 36 P23(LED3) P24(LED4) 30 35 P25(LED5) XOUT 31 34 P26(LED6) VSS 32 33 P27(LED7) Package type: PRDP0064BA-A (64P4B) Fig 2. Table 3 3803 group (Spec.H QzROM version) pin configuration (PRDP0064BA-A) List of package (Spec.H QzROM version) (PRDP0064BA-A) Package PRDP0064BA-A Product name QzROM size (bytes) ROM size for User in ( ) M38039G4HSP 16384 (16254) M38039G6HSP 24576 (24446) M38039G8HSP 32768 (32638) M38039GCHSP 49152 (49022) NOTES: 1. The user ROM area of a blank product is blank. Rev.1.10 Nov 14, 2005 REJ03B0166-0110 Page 4 of 91 RAM size (bytes) 2048 Remarks QzROM version (blank)(1) Fig 3. Rev.1.10 Nov 14, 2005 REJ03B0166-0110 Functional block diagram Page 5 of 91 V REF AVss 3 A/D converter (10) 2 31 Clock output X OUT 28 29 I/O port P5 12 13 14 15 16 17 18 19 4 5 6 7 8 9 10 11 I/O port P6 P5 (8) INT 3 RAM P6 (8) PWM (8) Sub-clock Sub-clock input output X CIN X COUT Clock generating circuit 30 Clock input X IN SI/O2 (8) ROM P4 (8) I/O port P4 PS PC L S Y X A INT 00 INT 1 INT 2 INT 40 D/A converter 2 (8) C P U 20 21 22 23 24 25 28 29 SI/O1 (8) 0 PC H 1 32 Data bus V CC V SS FUNCTIONAL BLOCK DIAGRAM (Package: PRDP0064BA-A) D/A converter 1 (8) I/O port P3 57 58 59 60 61 62 63 64 P3 (8) SI/O3 (8) 27 RESET Reset input I/O port P 2 (LED drive) Timer Y (8) Timer X (8) Timer 2 (8) Timer 1 (8) I/O port P 0 49 50 51 52 53 54 55 56 41 42 43 44 45 46 47 48 I/O port P 1 P0 (8) P1 (8) INT 01 INT 41 Timer Z (16) Prescaler Y (8) Prescaler X (8) Prescaler 12 (8) 33 34 35 36 37 38 39 40 P2 (8) CNTR 2 CNTR 1 CNTR 0 26 CNV SS 3803 Group (Spec.H QzROM version) Notice: This is not a final specification. Some parametric limits are subject to change. PRELIMINARY PRELIMINARY Notice: This is not a final specification. Some parametric limits are subject to change. 3803 Group (Spec.H QzROM version) PIN DESCRIPTION Table 4 Pin description Pin Name Functions Function except a port function VCC, VSS Power source * Apply voltage of 1.8 V - 5.5 V to VCC, and 0 V to VSS. CNVSS CNVSS input * This pin controls the operation mode of the chip and is shared with the VPP pin which is the power source input pin for programming the built-in QzROM. * Normally connected to VSS. VREF Reference voltage * Reference voltage input pin for A/D and D/A converters. AVSS Analog power source * Analog power source input pin for A/D and D/A converters. * Connect to VSS. RESET Reset input * Reset input pin for active "L". XIN Clock input XOUT Clock output * Input and output pins for the clock generating circuit. * Connect a ceramic resonator or quartz-crystal oscillator between the XIN and XOUT pins to set the oscillation frequency. * When an external clock is used, connect the clock source to the XIN pin and leave the XOUT pin open. P00/AN8- P07/AN15 I/O port P0 P10/INT41 P11/INT01 I/O port P1 P12-P17 * 8-bit CMOS I/O port. * I/O direction register allows each pin to be individually programmed as either input or output. * CMOS compatible input level. * CMOS 3-state output structure. * Pull-up control is enabled in a bit unit. * P20 - P27 (8 bits) are enabled to output large current for LED drive. * A/D converter input pin * Interrupt input pin P20-P27 I/O port P2 P30/DA1 P31/DA2 I/O port P3 * D/A converter input pin * 8-bit CMOS I/O port. * I/O direction register allows each pin to be individually programmed as either input or output. * CMOS compatible input level. * Serial I/O3 function pin * P30, P31, P34 - P37 are CMOS 3-state output structure. * P32, P33 are N-channel open-drain output structure. * Pull-up control of P30, P31, P34 - P37 is enabled in a bit unit. I/O port P4 * 8-bit CMOS I/O port. * I/O direction register allows each pin to be individually programmed as either input or output. * CMOS compatible input level. * CMOS 3-state output structure. * Pull-up control is enabled in a bit unit. P32, P33 P34/RXD3 P35/TXD3 P36/SCLK3 P37/SRDY3 P40/INT40/XCOUT P41/INT00/XCIN P42/INT1 P43/INT2 P44/RXD1 P45/TXD1 P46/SCLK1 P47/SRDY1/CNTR2 P50/SIN2 P51/SOUT2 P52/SCLK2 P53/SRDY2 * Interrupt input pin * Sub-clock generating I/O pin (resonator connected) * Interrupt input pin * Serial I/O1 function pin * Serial I/O1, timer Z function pin I/O port P5 * Serial I/O2 function pin P54/CNTR0 * Timer X function pin P55/CNTR1 * Timer Y function pin P56/PWM * PWM output pin P57/INT3 * Interrupt input pin P60/AN0- P67/AN7 I/O port P6 Rev.1.10 Nov 14, 2005 REJ03B0166-0110 * A/D converter input pin Page 6 of 91 PRELIMINARY Notice: This is not a final specification. Some parametric limits are subject to change. 3803 Group (Spec.H QzROM version) PART NUMBERING Product name M3803 9 G C H- XXX SP Package type SP : PRDP0064BA-A HP : PLQP0064KB-A KP : PLQP0064GA-A ROM number Omitted in blank version. -: standard "-" is omitted in the shipped in blank version. H-: Partial specification changed version. QzROM size 1: 4096 bytes 2: 8192 bytes 3: 12288 bytes 4: 16384 bytes 5: 20480 bytes 6: 24576 bytes 7: 28672 bytes 8: 32768 bytes 9: 36864 bytes A: 40960 bytes B: 45056 bytes C: 49152 bytes D: 53248 bytes E: 57344 bytes F: 61440 bytes The first 128 bytes and the last 2 bytes of ROM are reserved areas ; they cannot be used as a user's ROM area. Memory type G: QzROM version RAM size 0: 192 bytes 1: 256 bytes 2: 384 bytes 3: 512 bytes 4: 640 bytes Fig 4. Part numbering Rev.1.10 Nov 14, 2005 REJ03B0166-0110 Page 7 of 91 5: 768 bytes 6: 896 bytes 7: 1024 bytes 8: 1536 bytes 9: 2048 bytes PRELIMINARY Notice: This is not a final specification. Some parametric limits are subject to change. 3803 Group (Spec.H QzROM version) GROUP EXPANSION Renesas Technology expands the 3803 group (Spec.H QzROM version) as follows. Memory Size * QzROM size ................................................ 16 K to 48 K bytes * RAM size..................................................................2048 bytes Packages * PRDP0064BA-A ..................64-pin shrink plastic-molded DIP * PLQP0064KB-A ...............0.5 mm-pitch plastic molded LQFP * PLQP0064GA-A ...............0.8 mm-pitch plastic molded LQFP Memory Type Support for QzROM version. Memory Expansion Plan As of Sep. 2005 ROM size (bytes) Under development M38039GCH 48K Under development M38039G8H 32K Under development M38039G6H 24K Under development M38039G4H 16K 640 1024 1536 2048 RAM size (bytes) Notes 1: Products under development: the development schedule and specification may be revised without notice. Fig 5. Memory expansion plan Rev.1.10 Nov 14, 2005 REJ03B0166-0110 Page 8 of 91 PRELIMINARY Notice: This is not a final specification. Some parametric limits are subject to change. 3803 Group (Spec.H QzROM version) GROUP DESCRIPTION The QzROM version of 3803 group (Spec.H) is under development. The mask ROM version and the flash memory version are mass production. Currently support products are listed below. Table 5 Support products (mask ROM version and flash memory version of Spec.H) Product name ROM/flash memory size (bytes) ROM size for User in ( ) M38034M4H-XXXSP M38034M4H-XXXFP M38034M4H-XXXHP M38034M4H-XXXKP M38037M6H-XXXSP M38037M6H-XXXFP M38037M6H-XXXHP M38037M6H-XXXKP M38037M8H-XXXSP M38037M8H-XXXFP M38037M8H-XXXHP M38037M8H-XXXKP M38039MCH-XXXSP M38039MCH-XXXFP M38039MCH-XXXHP M38039MCH-XXXKP M38039MFH-XXXSP M38039MFH-XXXFP M38039MFH-XXXHP M38039MFH-XXXKP M38039MFH-XXXWG M38039FFHSP M38039FFHFP M38039FFHHP M38039FFHKP M38039FFHWG M38039FFSP M38039FFFP M38039FFHP Rev.1.10 Nov 14, 2005 REJ03B0166-0110 RAM size (bytes) 16384 (16254) 640 24576 (24446) 1024 32768 (32638) 1024 49152 (49022) 2048 61440 (61310) 2048 61440 Page 9 of 91 2048 Package PRDP0064BA-A (64P4B) PRQP0064GA-A (64P6N-A) PLQP0064KB-A (64P6Q-A) PLQP0064GA-A (64P6U-A) PRDP0064BA-A (64P4B) PRQP0064GA-A (64P6N-A) PLQP0064KB-A (64P6Q-A) PLQP0064GA-A (64P6U-A) PRDP0064BA-A (64P4B) PRQP0064GA-A (64P6N-A) PLQP0064KB-A (64P6Q-A) PLQP0064GA-A (64P6U-A) PRDP0064BA-A (64P4B) PRQP0064GA-A (64P6N-A) PLQP0064KB-A (64P6Q-A) PLQP0064GA-A (64P6U-A) PRDP0064BA-A (64P4B) PRQP0064GA-A (64P6N-A) PLQP0064KB-A (64P6Q-A) PLQP0064GA-A (64P6U-A) PTLG0064JA-A (64F0G) PRDP0064BA-A (64P4B) PRQP0064GA-A (64P6N-A) PLQP0064KB-A (64P6Q-A) PLQP0064GA-A (64P6U-A) PTLG0064JA-A (64F0G) PRDP0064BA-A (64P4B) PRQP0064GA-A (64P6N-A) PLQP0064KB-A (64P6Q-A) Remarks Mask ROM version Flash memory version (VCC=2.7-5.5V) Flash memory version (VCC=4.0-5.5V) PRELIMINARY Notice: This is not a final specification. Some parametric limits are subject to change. 3803 Group (Spec.H QzROM version) FUNCTIONAL DESCRIPTION CENTRAL PROCESSING UNIT (CPU) The 3803 group (Spec.H QzROM version) uses the standard 740 Family instruction set. Refer to the table of 740 Family addressing modes and machine instructions or the 740 Family Software Manual for details on the instruction set. Machine-resident 740 Family instructions are as follows: The FST and SLW instructions cannot be used. The STP, WIT, MUL, and DIV instructions can be used. [Accumulator (A)] The accumulator is an 8-bit register. Data operations such as data transfer, etc. are executed mainly through the accumulator. [Index Register X (X)] The index register X is an 8-bit register. In the index addressing modes, the value of the OPERAND is added to the contents of register X and specifies the real address. [Index Register Y (Y)] The index register Y is an 8-bit register. In partial instruction, the value of the OPERAND is added to the contents of register Y and specifies the real address. b7 [Stack Pointer (S)] The stack pointer is an 8-bit register used during subroutine calls and interrupts. This register indicates start address of stored area (stack) for storing registers during subroutine calls and interrupts. The low-order 8 bits of the stack address are determined by the contents of the stack pointer. The high-order 8 bits of the stack address are determined by the stack page selection bit. If the stack page selection bit is "0", the high-order 8 bits becomes "0016". If the stack page selection bit is "1", the high-order 8 bits becomes "0116". The operations of pushing register contents onto the stack and popping them from the stack are shown in Figure.7. Store registers other than those described in Figure.6 with program when the user needs them during interrupts or subroutine calls (see Table 6). [Program Counter (PC)] The program counter is a 16-bit counter consisting of two 8-bit registers PCH and PCL. It is used to indicate the address of the next instruction to be executed. b0 A b7 Accumulator b0 X b7 Index Register X b0 Y b7 Index Register Y b0 S b15 b7 b0 PCL PCH Stack Pointer Program Counter b7 b0 N V T B D I Z C Processor Status Register (PS) Carry Flag Zero Flag Interrupt Disable Flag Decimal Mode Flag Break Flag Index X Mode Flag Overflow Flag Negative Flag Fig 6. 740 Family CPU register structure Rev.1.10 Nov 14, 2005 REJ03B0166-0110 Page 10 of 91 PRELIMINARY Notice: This is not a final specification. Some parametric limits are subject to change. 3803 Group (Spec.H QzROM version) On-going Routine Interrupt request (Note) M(S)(PCH) Push Return Address on Stack (S)(S) - 1 Execute JSR M(S)(PCL) Push Return Address on Stack M(S)(PCH) (S)(S) - 1 (S)(S) - 1 M(S)(PS) M(S)(PCL) Push Contents of Processor Status Register on Stack (S)(S) - 1 (S)(S) - 1 Interrupt Service Routine ..... Subroutine ..... Execute RTI I Flag is Set from "0" to "1" Fetch the Jump Vector Execute RTS (S)(S) + 1 POP Return Address from Stack (S)(S) + 1 (PS)M(S) POP Contents of Processor Status Register from Stack (PCL)M(S) (S)(S) + 1 (S)(S) + 1 (PCL)M(S) (PCH)M(S) POP Return Address from Stack (S)(S) + 1 (PCH)M(S) Note : Condition for acceptance of an interrupt Interrupt enable flag is "1" Interrupt disable flag is "0" Fig 7. Table 6 Register push and pop at interrupt generation and subroutine call Push and pop instructions of accumulator or processor status register Push instruction to stack PHA PHP Accumulator Processor status register Rev.1.10 Nov 14, 2005 REJ03B0166-0110 Page 11 of 91 Pop instruction from stack PLA PLP PRELIMINARY Notice: This is not a final specification. Some parametric limits are subject to change. 3803 Group (Spec.H QzROM version) [Processor status register (PS)] The processor status register is an 8-bit register consisting of 5 flags which indicate the status of the processor after an arithmetic operation and 3 flags which decide MCU operation. Branch operations can be performed by testing the Carry (C) flag, Zero (Z) flag, Overflow (V) flag, or the Negative (N) flag. In decimal mode, the Z, V, N flags are not valid. Bit 4: Break flag (B) The B flag is used to indicate that the current interrupt was generated by the BRK instruction. The BRK flag in the processor status register is always "0". When the BRK instruction is used to generate an interrupt, the processor status register is pushed onto the stack with the break flag set to "1". Bit 0: Carry flag (C) The C flag contains a carry or borrow generated by the arithmetic logic unit (ALU) immediately after an arithmetic operation. It can also be changed by a shift or rotate instruction. Bit 5: Index X mode flag (T) When the T flag is "0", arithmetic operations are performed between accumulator and memory. When the T flag is "1", direct arithmetic operations and direct data transfers are enabled between memory locations. Bit 1: Zero flag (Z) The Z flag is set if the result of an immediate arithmetic operation or a data transfer is "0", and cleared if the result is anything other than "0". Bit 6: Overflow flag (V) The V flag is used during the addition or subtraction of one byte of signed data. It is set if the result exceeds +127 to - 128. When the BIT instruction is executed, bit 6 of the memory location operated on by the BIT instruction is stored in the overflow flag. Bit 2: Interrupt disable flag (I) The I flag disables all interrupts except for the interrupt generated by the BRK instruction. Interrupts are disabled when the I flag is "1". Bit 3: Decimal mode flag (D) The D flag determines whether additions and subtractions are executed in binary or decimal. Binary arithmetic is executed when this flag is "0"; decimal arithmetic is executed when it is "1". Decimal correction is automatic in decimal mode. Only the ADC and SBC instructions can execute decimal arithmetic. Table 7 Bit 7: Negative flag (N) The N flag is set if the result of an arithmetic operation or data transfer is negative. When the BIT instruction is executed, bit 7 of the memory location operated on by the BIT instruction is stored in the negative flag. Set and clear instructions of each bit of processor status register Set instruction Clear instruction C flag SEC CLC Rev.1.10 Nov 14, 2005 REJ03B0166-0110 Z flag - - Page 12 of 91 I flag SEI CLI D flag SED CLD B flag - - T flag SET CLT V flag - CLV N flag - - PRELIMINARY Notice: This is not a final specification. Some parametric limits are subject to change. 3803 Group (Spec.H QzROM version) [CPU Mode Register (CPUM)] 003B16 The CPU mode register contains the stack page selection bit, the internal system clock control bits, etc. The CPU mode register is allocated at address 003B16. b7 b0 1 CPU mode register (CPUM: address 003B16) Processor mode bits b1 b0 0 0 : Single-chip mode 0 1 : 1 0 : Not available 1 1 : Stack page selection bit 0 : 0 page 1 : 1 page Fix this bit to "1". Port XC switch bit 0 : I/O port function (stop oscillating) 1 : XCIN-XCOUT oscillating function Main clock (XIN-XOUT) stop bit 0 : Oscillating 1 : Stopped Main clock division ratio selection bits b7 b6 0 0 : = f(XIN)/2 (high-speed mode) 0 1 : = f(XIN)/8 (middle-speed mode) 1 0 : = f(XCIN)/2 (low-speed mode) 1 1 : Not available Fig 8. Structure of CPU mode register Rev.1.10 Nov 14, 2005 REJ03B0166-0110 Page 13 of 91 PRELIMINARY Notice: This is not a final specification. Some parametric limits are subject to change. 3803 Group (Spec.H QzROM version) MISRG (1) Bit 0 of address 001016: Oscillation stabilizing time set after STP instruction released bit When the MCU stops the clock oscillation by the STP instruction and the STP instruction has been released by an external interrupt source, usually, the fixed values of Timer 1 and Prescaler 12 (Timer 1 = 0116, Prescaler 12 = FF16) are automatically reloaded in order for the oscillation to stabilize. The user can inhibit the automatic setting by setting "1" to bit 0 of MISRG (address 001016). However, by setting this bit to "1", the previous values, set just before the STP instruction was executed, will remain in Timer 1 and Prescaler 12. Therefore, you will need to set an appropriate value to each register, in accordance with the oscillation stabilizing time, before executing the STP instruction. Figure.9 shows the structure of MISRG. * Middle-speed mode automatic switch by program The middle-speed mode can also be automatically switched by program while operating in low-speed mode. By setting the middle-speed automatic switch start bit (bit 3) of MISRG (address 001016 ) to "1" in the condition that the middlespeed mode automatic switch set bit is "1" while operating in low-speed mode, the MCU will automatically switch to middle-speed mode. In this case, the oscillation stabilizing time of the main clock can be selected by the middle-speed automatic switch wait time set bit (bit 2) of MISRG (address 001016). (2) Bits 1, 2, 3 of address 001016: Middle-speed Mode Automatic Switch Function In order to switch the clock mode of an MCU which has a sub-clock, the following procedure is necessary: set CPU mode register (003B 16 ) --> start main clock oscillation --> wait for oscillation stabilization --> switch to middle-speed mode (or high-speed mode). However, the 3803 group (Spec.H QzROM version) has the built-in function which automatically switches from low to middle-speed mode by program. b7 b0 MISRG MISRG: address 001016) Oscillation stabilizing time set after STP instruction released bit 0 : Automatically set "0116" to Timer 1, "FF16" to Prescaler 12 1 : Automatically set disabled Middle-speed mode automatic switch set bit 0 : Not set automatically 1 : Automatic switching enabled (Note) Middle-speed mode automatic switch wait time set bit 0 : 4.5 to 5.5 machine cycles 1 : 6.5 to 7.5 machine cycles Middle-speed mode automatic switch start bit (Depending on program) 0 : Invalid 1 : Automatic switch start (Note) Not used (return "0" when read) (Do not write "1" to this bit) Note : When automatic switch to middle-speed mode from low-speed mode occurs, the values of CPU mode register (3B 16) change. Fig 9. Structure of MISRG Rev.1.10 Nov 14, 2005 REJ03B0166-0110 Page 14 of 91 PRELIMINARY Notice: This is not a final specification. Some parametric limits are subject to change. 3803 Group (Spec.H QzROM version) MEMORY * Special Function Register (SFR) Area The Special Function Register area in the zero page contains control registers such as I/O ports and timers. * RAM The RAM is used for data storage and for stack area of subroutine calls and interrupts. * ROM The first 128 bytes and the last 2 bytes of ROM are reserved for device testing and the rest is a user area for storing programs. In the QzROM version, 1 byte of address FFDB16 is also a reserved area. * Interrupt Vector Area The interrupt vector area contains reset and interrupt vectors. * Zero Page Access to this area with only 2 bytes is possible in the zero page addressing mode. * Special Page Access to this area with only 2 bytes is possible in the special page addressing mode. RAM area RAM size (bytes) Address XXXX16 192 256 384 512 640 768 896 1024 1536 2048 00FF16 013F16 01BF16 023F16 02BF16 033F16 03BF16 043F16 063F16 083F16 ROM area ROM size (bytes) 4096 8192 12288 16384 20480 24576 28672 32768 36864 40960 45056 49152 53248 57344 61440 * ROM Code Protect Address (address FFDB16) Address FFDB16, which is the reserved ROM area of QzROM, is the ROM code protect address. "0016" or "FE16" is written into this address when selecting the protect bit write by using a serial programmer or selecting protect enabled for writing shipment by Renesas Technology corp.. When "0016" or "FE16" is set to the ROM code protect address, the protect function is enabled, so that reading or writing from/to QzROM is disabled by a serial programmer. As for the QzROM product in blank, the ROM code is protected by selecting the protect bit write at ROM writing with a serial programmer. The protect can be performed, dividing twice. The protect area 1 is from the beginning address of ROM to address "EFFF16". As for the QzROM product shipped after writing, "0016" (protect enabled to all area), "FE16" (protect enabled to the protect area 1) or "FF16" (protect disabled) is written into the ROM code protect address when Renesas Technology corp. performs writing. The writing of "0016", "FE16" or "FF16" can be selected as ROM option setup ("MASK option" written in the mask file converter) when ordering. <Notes> Since the contents of RAM are undefined at reset, be sure to set an initial value before use. User ROM area Address YYYY16 F00016 E00016 D00016 C00016 B00016 A00016 900016 800016 700016 600016 500016 400016 300016 200016 100016 000016 SFR area RAM 010016 XXXX16 083F16 084016 0FDF16 0FE016 0FFF16 100016 Address ZZZZ16 F08016 E08016 D08016 C08016 B08016 A08016 908016 808016 708016 608016 508016 408016 308016 208016 108016 Fig 10. Memory map diagram Rev.1.10 Nov 14, 2005 REJ03B0166-0110 Zero page 004016 Page 15 of 91 Reserved area Not used SFR area Not used YYYY16 Reserved ROM area (128 bytes) ZZZZ16 ROM Protect area 1 EFFF16 F00016 FF0016 FFDB16 FFDC16 FFFE16 FFFF16 Reserved ROM area (ROM code protect address) Interrupt vector area Reserved ROM area Special page PRELIMINARY Notice: This is not a final specification. Some parametric limits are subject to change. 3803 Group (Spec.H QzROM version) 000016 Port P0 (P0) 000116 Port P0 direction register (P0D) 002016 Prescaler 12 (PRE12) 002116 Timer 1 (T1) 000216 Port P1 (P1) 000316 Port P1 direction register (P1D) 002216 Timer 2 (T2) 002316 Timer XY mode register (TM) 000416 Port P2 (P2) 000516 Port P2 direction register (P2D) 002416 Prescaler X (PREX) 002516 Timer X (TX) 000616 Port P3 (P3) 000716 Port P3 direction register (P3D) 002616 Prescaler Y (PREY) 002716 Timer Y (TY) 000816 Port P4 (P4) 000916 Port P4 direction register (P4D) 002816 Timer Z low-order (TZL) 002916 Timer Z high-order (TZH) 002A16 Timer Z mode register (TZM) 002B16 PWM control register (PWMCON) 000A16 Port P5 (P5) 000B16 Port P5 direction register (P5D) 000C16 Port P6 (P6) 000D16 Port P6 direction register (P6D) 000E16 Timer 12, X count source selection register (T12XCSS) 002C16 PWM prescaler (PREPWM) 002D16 PWM register (PWM) 002E16 000F16 Timer Y, Z count source selection register (TYZCSS) 001016 MISRG 002F16 Baud rate generator 3 (BRG3) 003016 Transmit/Receive buffer register 3 (TB3/RB3) 001116 Reserved * 001216 Reserved * 003116 Serial I/O3 status register (SIO3STS) 003216 Serial I/O3 control register (SIO3CON) 001316 Reserved * 001416 Reserved * 003316 UART3 control register (UART3CON) 003416 AD/DA control register (ADCON) 001516 Reserved * 001616 Reserved * 003516 AD conversion register 1 (AD1) 003616 DA1 conversion register (DA1) 001716 Reserved * 001816 Transmit/Receive buffer register 1 (TB1/RB1) 003716 DA2 conversion register (DA2) 003816 AD conversion register 2 (AD2) 001916 Serial I/O1 status register (SIO1STS) 001A16 Serial I/O1 control register (SIO1CON) 003916 Interrupt source selection register (INTSEL) 003A16 Interrupt edge selection register (INTEDGE) 001B16 UART1 control register (UART1CON) 001C16 Baud rate generator (BRG1) 003B16 CPU mode register (CPUM) 001D16 Serial I/O2 control register (SIO2CON) 001E16 Watchdog timer control register (WDTCON) 003C16 Interrupt request register 1 (IREQ1) 003D16 Interrupt request register 2 (IREQ2) 003E16 Interrupt control register 1 (ICON1) 001F16 Serial I/O2 register (SIO2) 003F16 Interrupt control register 2 (ICON2) 0FE016 Reserved * 0FE116 Reserved * 0FF016 Port P0 pull-up control register (PULL0) 0FF116 Port P1 pull-up control register (PULL1) 0FE216 Reserved * 0FE316 Reserved * 0FF216 Port P2 pull-up control register (PULL2) 0FF316 Port P3 pull-up control register (PULL3) 0FE416 Reserved * 0FE516 Reserved * 0FF416 Port P4 pull-up control register (PULL4) 0FF516 Port P5 pull-up control register (PULL5) 0FE616 Reserved * 0FE716 Reserved * 0FF616 Port P6 pull-up control register (PULL6) 0FE816 Reserved * 0FE916 Reserved * *Reserved area: Do not write any data to these addresses, because these areas are reserved. 0FEA16 Reserved * 0FEB16 Reserved * 0FEC16 Reserved * 0FED16 Reserved * 0FEE16 Reserved * 0FEF16 Reserved * Fig 11. Memory map of special function register (SFR) Rev.1.10 Nov 14, 2005 REJ03B0166-0110 Page 16 of 91 PRELIMINARY Notice: This is not a final specification. Some parametric limits are subject to change. 3803 Group (Spec.H QzROM version) I/O PORTS The I/O ports have direction registers which determine the input/output direction of each individual pin. Each bit in a direction register corresponds to one pin, and each pin can be set to be input port or output port. When "0" is written to the bit corresponding to a pin, that pin becomes an input pin. When "1" is written to that bit, that pin becomes an output pin. Table 8 If data is read from a pin which is set to output, the value of the port output latch is read, not the value of the pin itself. Pins set to input are floating. If a pin set to input is written to, only the port output latch is written to and the pin remains floating. By setting the port P0 pull-up control register (address 0FF016) to the port P6 pull-up control register (address 0FF616) ports can control pull-up with a program. However, the contents of these registers do not affect ports programmed as the output ports. I/O port function Pin Name Input/ I/O Structure Non-Port Function Output Port P0 Input/output, CMOS compatible A/D converter input input level Port P1 individual External interrupt input bits CMOS 3-state output P00/AN8-P07/AN15 P10/INT41 P11/INT01 P12-P17 P20/LED0-P27/LED7 Port P2 Port P3 P30/DA1 P31/DA2 P32, P33 P34/RXD3 P35/TXD3 P36/SCLK3 P37/SRDY3 P40/INT40/XCOUT P41/INT00/XCIN P42/INT1 P43/INT2 P44/RXD1 P45/TXD1 P46/SCLK1 P47/SRDY1/CNTR2 P50/SIN2 P51/SOUT2 P52/SCLK2 P53/SRDY2 P54/CNTR0 P55/CNTR1 P56/PWM P57/INT3 P60/AN0-P67/AN7 Port P4 D/A converter output CMOS compatible input level N-channel open-drain output CMOS compatible Serial I/O3 function I/O input level CMOS 3-state output External interrupt input Sub-clock generating circuit External interrupt input Port P5 Port P6 Related SFRs Ref. No. AD/DA control register (1) Interrupt edge selection register (2) (3) AD/DA control register (5) Serial I/O3 control register UART3 control register (6) (7) (8) (9) Interrupt edge selection register (10) CPU mode register (11) Interrupt edge selection register (2) Serial I/O1 function I/O Serial I/O1 control register UART1 control register Serial I/O1 function I/O Timer Z function I/O Serial I/O2 function I/O Serial I/O1 control register Timer Z mode register Serial I/O2 control register Timer X, Y function I/O Timer XY mode register PWM output External interrupt input A/D converter input PWM control register (18) Interrupt edge selection register (2) AD/DA control register (1) NOTES: 1. Refer to the applicable sections how to use double-function ports as function I/O ports. 2. Make sure that the input level at each pin is either 0 V or VCC during execution of the STP instruction. When an input level is at an intermediate potential, a current will flow from VCC to VSS through the input-stage gate. Rev.1.10 Nov 14, 2005 REJ03B0166-0110 Page 17 of 91 (4) (6) (7) (8) (12) (13) (14) (15) (16) (17) PRELIMINARY Notice: This is not a final specification. Some parametric limits are subject to change. 3803 Group (Spec.H QzROM version) (1) Ports P0, P6 (2) Ports P10, P11, P42, P43, P57 Pull-up control bit Pull-up control bit Direction register Direction register Port latch Data bus Port latch Data bus A/D converter input Interrupt input Analog input pin selection bit (3) Ports P12 to P17, P2 (4) Ports P30, P31 Pull-up control bit Pull-up control bit Direction register Direction register Data bus Port latch Data bus Port latch D/A converter output DA1 output enable bit (P30) DA2 output enable bit (P31) (5) Ports P32, P33 (6) Ports P34, P44 Pull-up control bit Serial I/O enable bit Receive enable bit Direction register Data bus Direction register Port latch Data bus Port latch Serial I/O input (7) Ports P35, P45 (8) Ports P36, P46 Pull-up control bit Serial I/O enable bit Transmit enable bit P-channel output disable bit Serial I/O synchronous clock selection bit Serial I/O enable bit Serial I/O mode selection bit Pull-up control bit Serial I/O enable bit Direction register Data bus Direction register Data bus Port latch Serial I/O output Port latch Serial I/O clock output Serial I/O external clock input Fig 12. Port block diagram (1) Rev.1.10 Nov 14, 2005 REJ03B0166-0110 Page 18 of 91 PRELIMINARY Notice: This is not a final specification. Some parametric limits are subject to change. 3803 Group (Spec.H QzROM version) (9) Port P37 (10) Port P40 Pull-up control bit Pull-up control bit Serial I/O3 mode selection bit Serial I/O3 enable bit SRDY3 output enable bit Port XC switch bit Direction register Direction register Data bus Data bus Port latch Port latch INT40 Interrupt input Serial I/O3 ready output Port XC switch bit (11) Port P41 (12) Port P47 Pull-up control bit Timer Z operating mode bits Bit 2 Bit 1 Bit 0 Port XC switch bit Direction register Data bus Pull-up control bit Serial I/O1 mode selection bit Serial I/O1 enable bit SRDY1 output enable bit Port latch Direction register INT00 Interrupt input Data bus Port latch Port XC switch bit Sub-clock generating circuit input Timer output Serial I/O1 ready output CNTR2 interrupt input (13) Port P50 (14) Port P51 Pull-up control bit Pull-up control bit Serial I/O2 transmit completion signal Serial I/O2 port selection bit Direction register Direction register Data bus Port latch Data bus Port latch Serial I/O2 input Serial I/O2 output Fig 13. Port block diagram (2) Rev.1.10 Nov 14, 2005 REJ03B0166-0110 Page 19 of 91 P-channel output disable bit PRELIMINARY Notice: This is not a final specification. Some parametric limits are subject to change. 3803 Group (Spec.H QzROM version) (15) Port P52 (16) Port P53 Pull-up control bit Pull-up control bit Serial I/O2 synchronous clock selection bit Serial I/O2 port selection bit SRDY2 output enable bit Direction register Direction register Data bus Data bus Port latch Port latch Serial I/O2 ready output Serial I/O2 clock output Serial I/O2 external clock input (17) Ports P54, P55 (18) Port P56 Pull-up control bit Pull-up control bit PWM function enable bit Direction register Data bus Direction register Port latch Data bus Port latch Pulse output mode Timer output PWM output CNTR Interrupt input Fig 14. Port block diagram (3) Rev.1.10 Nov 14, 2005 REJ03B0166-0110 Page 20 of 91 PRELIMINARY Notice: This is not a final specification. Some parametric limits are subject to change. 3803 Group (Spec.H QzROM version) b7 b0 Port P0 pull-up control register (PULL0: address 0FF016) P00 pull-up control bit 0: No pull-up 1: Pull-up P01 pull-up control bit 0: No pull-up 1: Pull-up P02 pull-up control bit 0: No pull-up 1: Pull-up P03 pull-up control bit 0: No pull-up 1: Pull-up P04 pull-up control bit 0: No pull-up 1: Pull-up P05 pull-up control bit 0: No pull-up 1: Pull-up P06 pull-up control bit 0: No pull-up 1: Pull-up P07 pull-up control bit 0: No pull-up 1: Pull-up b7 Note: Pull-up control is valid when the corresponding bit of the port direction register is "0" (input). When that bit is "1" (output), pull-up cannot be set to the port of which pull-up is selected. Note: Pull-up control is valid when the corresponding bit of the port direction register is "0" (input). When that bit is "1" (output), pull-up cannot be set to the port of which pull-up is selected. b0 Port P1 pull-up control register (PULL1: address 0FF116) P10 pull-up control bit 0: No pull-up 1: Pull-up P11 pull-up control bit 0: No pull-up 1: Pull-up P12 pull-up control bit 0: No pull-up 1: Pull-up P13 pull-up control bit 0: No pull-up 1: Pull-up P14 pull-up control bit 0: No pull-up 1: Pull-up P15 pull-up control bit 0: No pull-up 1: Pull-up P16 pull-up control bit 0: No pull-up 1: Pull-up P17 pull-up control bit 0: No pull-up 1: Pull-up Fig 15. Structure of port pull-up control register (1) Rev.1.10 Nov 14, 2005 REJ03B0166-0110 Page 21 of 91 PRELIMINARY Notice: This is not a final specification. Some parametric limits are subject to change. 3803 Group (Spec.H QzROM version) b7 b0 Port P2 pull-up control register (PULL2: address 0FF216) P20 pull-up control bit 0: No pull-up 1: Pull-up P21 pull-up control bit 0: No pull-up 1: Pull-up P22 pull-up control bit 0: No pull-up 1: Pull-up P23 pull-up control bit 0: No pull-up 1: Pull-up P24 pull-up control bit 0: No pull-up 1: Pull-up P25 pull-up control bit 0: No pull-up 1: Pull-up P26 pull-up control bit 0: No pull-up 1: Pull-up P27 pull-up control bit 0: No pull-up 1: Pull-up b7 Note: Pull-up control is valid when the corresponding bit of the port direction register is "0" (input). When that bit is "1" (output), pull-up cannot be set to the port of which pull-up is selected. Note: Pull-up control is valid when the corresponding bit of the port direction register is "0" (input). When that bit is "1" (output), pull-up cannot be set to the port of which pull-up is selected. b0 Port P3 pull-up control register (PULL3: address 0FF316) P30 pull-up control bit 0: No pull-up 1: Pull-up P31 pull-up control bit 0: No pull-up 1: Pull-up Not used (return "0" when read) P34 pull-up control bit 0: No pull-up 1: Pull-up P35 pull-up control bit 0: No pull-up 1: Pull-up P36 pull-up control bit 0: No pull-up 1: Pull-up P37 pull-up control bit 0: No pull-up 1: Pull-up Fig 16. Structure of port pull-up control register (2) Rev.1.10 Nov 14, 2005 REJ03B0166-0110 Page 22 of 91 PRELIMINARY Notice: This is not a final specification. Some parametric limits are subject to change. 3803 Group (Spec.H QzROM version) b7 b0 Port P4 pull-up control register (PULL4: address 0FF416) P40 pull-up control bit 0: No pull-up 1: Pull-up P41 pull-up control bit 0: No pull-up 1: Pull-up P42 pull-up control bit 0: No pull-up 1: Pull-up P43 pull-up control bit 0: No pull-up 1: Pull-up P44 pull-up control bit 0: No pull-up 1: Pull-up P45 pull-up control bit 0: No pull-up 1: Pull-up P46 pull-up control bit 0: No pull-up 1: Pull-up P47 pull-up control bit 0: No pull-up 1: Pull-up b7 Note: Pull-up control is valid when the corresponding bit of the port direction register is "0" (input). When that bit is "1" (output), pull-up cannot be set to the port of which pull-up is selected. Note: Pull-up control is valid when the corresponding bit of the port direction register is "0" (input). When that bit is "1" (output), pull-up cannot be set to the port of which pull-up is selected. b0 Port P5 pull-up control register (PULL5: address 0FF516) P50 pull-up control bit 0: No pull-up 1: Pull-up P51 pull-up control bit 0: No pull-up 1: Pull-up P52 pull-up control bit 0: No pull-up 1: Pull-up P53 pull-up control bit 0: No pull-up 1: Pull-up P54 pull-up control bit 0: No pull-up 1: Pull-up P55 pull-up control bit 0: No pull-up 1: Pull-up P56 pull-up control bit 0: No pull-up 1: Pull-up P57 pull-up control bit 0: No pull-up 1: Pull-up Fig 17. Structure of port pull-up control register (3) Rev.1.10 Nov 14, 2005 REJ03B0166-0110 Page 23 of 91 PRELIMINARY Notice: This is not a final specification. Some parametric limits are subject to change. 3803 Group (Spec.H QzROM version) b7 b0 Port P6 pull-up control register (PULL6: address 0FF616) P60 pull-up control bit 0: No pull-up 1: Pull-up P61 pull-up control bit 0: No pull-up 1: Pull-up P62 pull-up control bit 0: No pull-up 1: Pull-up P63 pull-up control bit 0: No pull-up 1: Pull-up P64 pull-up control bit 0: No pull-up 1: Pull-up P65 pull-up control bit 0: No pull-up 1: Pull-up P66 pull-up control bit 0: No pull-up 1: Pull-up P67 pull-up control bit 0: No pull-up 1: Pull-up Fig 18. Structure of port pull-up control register (4) Rev.1.10 Nov 14, 2005 REJ03B0166-0110 Page 24 of 91 Note: Pull-up control is valid when the corresponding bit of the port direction register is "0" (input). When that bit is "1" (output), pull-up cannot be set to the port of which pull-up is selected. PRELIMINARY 3803 Group (Spec.H QzROM version) INTERRUPTS The 3803 group (Spec.H QzROM version)'s interrupts are a type of vector and occur by 16 sources among 21 sources: eight external, twelve internal, and one software. * Interrupt Control Each interrupt is controlled by an interrupt request bit, an interrupt enable bit, and the interrupt disable flag except for the software interrupt set by the BRK instruction. An interrupt occurs if the corresponding interrupt request and enable bits are "1" and the interrupt disable flag is "0". Interrupt enable bits can be set or cleared by software. Interrupt request bits can be cleared by software, but cannot be set by software. The reset and the BRK instruction cannot be disabled with any flag or bit. The I (interrupt disable) flag disables all interrupts except the reset and the BRK instruction interrupt. When several interrupt requests occur at the same time, the interrupts are received according to priority. * Interrupt Operation By acceptance of an interrupt, the following operations are automatically performed: 1. The contents of the program counter and the processor status register are automatically pushed onto the stack. 2. The interrupt disable flag is set and the corresponding interrupt request bit is cleared. 3. The interrupt jump destination address is read from the vector table into the program counter. * Interrupt Source Selection Which of each combination of the following interrupt sources can be selected by the interrupt source selection register (address 003916). 1. INT0 or Timer Z 2. CNTR1 or Serial I/O3 reception 3. Serial I/O2 or Timer Z 4. INT4 or CNTR2 5. A/D converter or serial I/O3 transmission * External Interrupt Pin Selection The occurrence sources of the external interrupt INT0 and INT4 can be selected from either input from INT00 and INT40 pin, or input from INT01 and INT41 pin by the INT 0, INT4 interrupt switch bit of interrupt edge selection register (bit 6 of address 003A16). Rev.1.10 Nov 14, 2005 REJ03B0166-0110 Page 25 of 91 Notice: This is not a final specification. Some parametric limits are subject to change. <Notes> When setting the followings, the interrupt request bit may be set to "1". * When setting external interrupt active edge Related register: Interrupt edge selection register (address 003A16) Timer XY mode register (address 002316) Timer Z mode register (address 002A16) * When switching interrupt sources of an interrupt vector address where two or more interrupt sources are allocated Related register: Interrupt source selection register (address 003916) When not requiring for the interrupt occurrence synchronized with these setting, take the following sequence. (1) Set the corresponding interrupt enable bit to "0" (disabled). (2) Set the interrupt edge select bit (the active edge switch bit) or the interrupt source select bit. (3) Set the corresponding interrupt request bit to "0" after 1 or more instructions have been executed. (4) Set the corresponding interrupt enable bit to "1" (enabled). PRELIMINARY Notice: This is not a final specification. Some parametric limits are subject to change. 3803 Group (Spec.H QzROM version) Table 9 Interrupt vector addresses and priority 1 Vector Interrupt Request Generating Addresses(1) Conditions High Low FFFD16 FFFC16 At reset 2 FFFB16 FFFA16 Timer Z INT1 3 FFF916 FFF816 Serial I/O1 reception 4 FFF716 FFF616 Serial I/O1 transmission 5 FFF516 FFF416 Timer X Timer Y Timer 1 Timer 2 CNTR0 6 7 8 9 10 FFF316 FFF116 FFEF16 FFED16 FFEB16 FFF216 FFF016 FFEE16 FFEC16 FFEA16 CNTR1 11 FFE916 FFE816 Serial I/O2 12 FFE716 FFE616 Timer Z INT2 13 FFE516 FFE416 INT3 14 FFE316 FFE216 INT4 15 FFE116 FFE016 16 FFDF16 FFDE16 Interrupt Source Reset(2) INT0 Priority Serial I/O3 reception CNTR2 A/D converter Serial I/O3 transmission At detection of either rising or falling edge of INT0 input At timer Z underflow At detection of either rising or falling edge of INT1 input At completion of serial I/O1 data reception At completion of serial I/O1 transmission shift or when transmission buffer is empty At timer X underflow At timer Y underflow At timer 1 underflow At timer 2 underflow At detection of either rising or falling edge of CNTR0 input At detection of either rising or falling edge of CNTR1 input At completion of serial I/O3 data reception At completion of serial I/O2 data transmission or reception At timer Z underflow At detection of either rising or falling edge of INT2 input At detection of either rising or falling edge of INT3 input At detection of either rising or falling edge of INT4 input At detection of either rising or falling edge of CNTR2 input At completion of A/D conversion At completion of serial I/O3 transmission shift or when transmission buffer is empty At BRK instruction execution BRK instruction 17 FFDD16 FFDC16 NOTES: 1. Vector addresses contain interrupt jump destination addresses. 2. Reset function in the same way as an interrupt with the highest priority. Rev.1.10 Nov 14, 2005 REJ03B0166-0110 Page 26 of 91 Remarks Non-maskable External interrupt (active edge selectable) External interrupt (active edge selectable) Valid when serial I/O1 is selected Valid when serial I/O1 is selected STP release timer underflow External interrupt (active edge selectable) External interrupt (active edge selectable) Valid when serial I/O3 is selected Valid when serial I/O2 is selected External interrupt (active edge selectable) External interrupt (active edge selectable) External interrupt (active edge selectable) External interrupt (active edge selectable) Valid when serial I/O3 is selected Non-maskable software interrupt PRELIMINARY Notice: This is not a final specification. Some parametric limits are subject to change. 3803 Group (Spec.H QzROM version) Interrupt request bit Interrupt enable bit Interrupt disable flag (I) BRK instruction Reset Fig 19. Interrupt control Rev.1.10 Nov 14, 2005 REJ03B0166-0110 Page 27 of 91 Interrupt request PRELIMINARY Notice: This is not a final specification. Some parametric limits are subject to change. 3803 Group (Spec.H QzROM version) b7 b0 Interrupt edge selection register (INTEDGE : address 003A16) INT0 interrupt edge selection bit INT1 interrupt edge selection bit Not used (returns "0" when read) INT2 interrupt edge selection bit INT3 interrupt edge selection bit INT4 interrupt edge selection bit INT0, INT4 interrupt switch bit 0 : INT00, INT40 interrupt 1 : INT01, INT41 interrupt Not used (returns "0" when read) b7 b0 0 : Falling edge active 1 : Rising edge active 0 : Falling edge active 1 : Rising edge active Interrupt request register 1 (IREQ1 : address 003C16) b7 b0 INT0/Timer Z interrupt request bit INT1 interrupt request bit Serial I/O1 receive interrupt request bit Serial I/O1 transmit interrupt request bit Timer X interrupt request bit Timer Y interrupt request bit Timer 1 interrupt request bit Timer 2 interrupt request bit CNTR0 interrupt request bit CNTR1/Serial I/O3 receive interrupt request bit Serial I/O2/Timer Z interrupt request bit INT2 interrupt request bit INT3 interrupt request bit INT4/CNTR2 interrupt request bit AD converter/Serial I/O3 transmit interrupt request bit Not used (returns "0" when read) 0 : No interrupt request issued 1 : Interrupt request issued b7 b0 Interrupt control register 1 (ICON1 : address 003E16) INT0/Timer Z interrupt enable bit INT1 interrupt enable bit Serial I/O1 receive interrupt enable bit Serial I/O1 transmit interrupt enable bit Timer X interrupt enable bit Timer Y interrupt enable bit Timer 1 interrupt enable bit Timer 2 interrupt enable bit b0 0 : No interrupt request issued 1 : Interrupt request issued b7 b0 Interrupt control register 2 (ICON2 : address 003F16) CNTR0 interrupt enable bit CNTR1/Serial I/O3 receive interrupt enable bit Serial I/O2/Timer Z interrupt enable bit INT2 interrupt enable bit INT3 interrupt enable bit INT4/CNTR2 interrupt enable bit AD converter/Serial I/O3 transmit interrupt enable bit Not used (returns "0" when read) (Do not write "1" to this bit.) 0 : Interrupts disabled 1 : Interrupts enabled 0 : Interrupts disabled 1 : Interrupts enabled b7 Interrupt request register 2 (IREQ2 : address 003D16) Interrupt source selection register (INTSEL : address 003916) INT0/Timer Z interrupt source selection bit 0 : INT0 interrupt 1 : Timer Z interrupt (Do not write "1" to these bits simultaneously.) Serial I/O2/Timer Z interrupt source selection bit 0 : Serial I/O2 interrupt 1 : Timer Z interrupt Not used (Do not write "1" to these bits.) INT4/CNTR2 interrupt source selection bit 0 : INT4 interrupt 1 : CNTR2 interrupt Not used (Do not write "1" to this bit.) CNTR1/Serial I/O3 receive interrupt source selection bit 0 : CNTR1 interrupt 1 : Serial I/O3 receive interrupt AD converter/Serial I/O3 transmit interrupt source selection bit 0 : A/D converter interrupt 1 : Serial I/O3 transmit interrupt Fig 20. Structure of interrupt-related registers Rev.1.10 Nov 14, 2005 REJ03B0166-0110 Page 28 of 91 PRELIMINARY 3803 Group (Spec.H QzROM version) TIMERS * 8-bit Timers The 3803 group (Spec.H QzROM version) has four 8-bit timers: timer 1, timer 2, timer X, and timer Y. The timer 1 and timer 2 use one prescaler in common, and the timer X and timer Y use each prescaler. Those are 8-bit prescalers. Each of the timers and prescalers has a timer latch or a prescaler latch. The division ratio of each timer or prescaler is given by 1/(n + 1), where n is the value in the corresponding timer or prescaler latch. All timers are down-counters. When the timer reaches "0016", an underflow occurs at the next count pulse and the contents of the corresponding timer latch are reloaded into the timer and the count is continued. When the timer underflows, the interrupt request bit corresponding to that timer is set to "1". * Timer divider The divider count source is switched by the main clock division ratio selection bits of CPU mode register (bits 7 and 6 at address 003B16). When these bits are "00" (high-speed mode) or "01" (middle-speed mode), XIN is selected. When these bits are "10" (low-speed mode), XCIN is selected. * Prescaler 12 The prescaler 12 counts the output of the timer divider. The count source is selected by the timer 12, X count source selection register among 1/2, 1/4, 1/8, 1/16, 1/32, 1/64, 1/128, 1/256, 1/512, 1/1024 of f(XIN) or f(XCIN). * Timer 1 and Timer 2 The timer 1 and timer 2 counts the output of prescaler 12 and periodically set the interrupt request bit. * Prescaler X and prescaler Y The prescaler X and prescaler Y count the output of the timer divider or f(XCIN). The count source is selected by the timer 12, X count source selection register (address 000E16) and the timer Y, Z count source selection register (address 000F16) among 1/2, 1/4, 1/8, 1/16, 1/32, 1/64, 1/128, 1/256, 1/512, and 1/1024 of f(XIN) or f(XCIN); and f(XCIN). Notice: This is not a final specification. Some parametric limits are subject to change. * Timer X and Timer Y The timer X and timer Y can each select one of four operating modes by setting the timer XY mode register (address 002316). (1) Timer mode * Mode selection This mode can be selected by setting "00" to the timer X operating mode bits (bits 1 and 0) and the timer Y operating mode bits (bits 5 and 4) of the timer XY mode register (address 002316). * Explanation of operation The timer count operation is started by setting "0" to the timer X count stop bit (bit 3) and the timer Y count stop bit (bit 7) of the timer XY mode register (address 002316). When the timer reaches "0016", an underflow occurs at the next count pulse and the contents of timer latch are reloaded into the timer and the count is continued. (2) Pulse Output Mode * Mode selection This mode can be selected by setting "01" to the timer X operating mode bits (bits 1 and 0) and the timer Y operating mode bits (bits 5 and 4) of the timer XY mode register (address 002316). * Explanation of operation The operation is the same as the timer mode's. Moreover the pulse which is inverted each time the timer underflows is output from CNTR0/CNTR1 pin. Regardless of the timer counting or not the output of CNTR0/CNTR1 pin is initialized to the level of specified by their active edge switch bits when writing to the timer. When the CNTR0 active edge switch bit (bit 2) and the CNTR 1 active edge switch bit (bit 6) of the timer XY mode register (address 002316) is "0", the output starts with "H" level. When it is "1", the output starts with "L" level. Switching the CNTR 0 or CNTR 1 active edge switch bit will reverse the output level of the corresponding CNTR0 or CNTR1 pin. * Precautions Set the double-function port of CNTR0 /CNTR 1 pin and port P54/P55 to output in this mode. (3) Event Counter Mode * Mode selection This mode can be selected by setting "10" to the timer X operating mode bits (bits 1 and 0) and the timer Y operating mode bits (bits 5 and 4) of the timer XY mode register (address 002316). * Explanation of operation The operation is the same as the timer mode's except that the timer counts signals input from the CNTR0 or CNTR1 pin. The valid edge for the count operation depends on the CNTR0 active edge switch bit (bit 2) or the CNTR1 active edge switch bit (bit 6) of the timer XY mode register (address 002316). When it is "0", the rising edge is valid. When it is "1", the falling edge is valid. * Precautions Set the double-function port of CNTR0 /CNTR 1 pin and port P54/P55 to input in this mode. Rev.1.10 Nov 14, 2005 REJ03B0166-0110 Page 29 of 91 PRELIMINARY 3803 Group (Spec.H QzROM version) (4) Pulse Width Measurement Mode * Mode selection This mode can be selected by setting "11" to the timer X operating mode bits (bits 1 and 0) and the timer Y operating mode bits (bits 5 and 4) of the timer XY mode register (address 002316). * Explanation of operation When the CNTR0 active edge switch bit (bit 2) or the CNTR1 active edge switch bit (bit 6) of the timer XY mode register (address 002316) is "1", the timer counts during the term of one falling edge of CNTR0/CNTR1 pin input until the next rising edge of input ("L" term). When it is "0", the timer counts during the term of one rising edge input until the next falling edge input ("H" term). * Precautions Set the double-function port of CNTR0 /CNTR 1 pin and port P54/P55 to input in this mode. The count operation can be stopped by setting "1" to the timer X count stop bit (bit 3) and the timer Y count stop bit (bit 7) of the timer XY mode register (address 002316). The interrupt request bit is set to "1" each time the timer underflows. * Precautions when switching count source When switching the count source by the timer 12, X and Y count source selection bits, the value of timer count is altered in inconsiderable amount owing to generating of thin pulses on the count input signals. Therefore, select the timer count source before setting the value to the prescaler and the timer. Rev.1.10 Nov 14, 2005 REJ03B0166-0110 Page 30 of 91 Notice: This is not a final specification. Some parametric limits are subject to change. PRELIMINARY Notice: This is not a final specification. Some parametric limits are subject to change. 3803 Group (Spec.H QzROM version) XIN "00" "11" (1/2, 1/4, 1/8, 1/16, 1/32, 1/64, 1/128, 1/256, 1/512, 1/1024) Divider Count source selection bit Clock for timer X Clock for timer Y Main clock division ratio selection bits Clock for timer 12 XCIN "10" Data bus Prescaler X latch (8) f(XCIN) Prescaler X (8) CNTR0 active edge switch bit "0" P54/CNTR0 Timer X latch (8) Pulse width Timer mode measurement Pulse output mode mode Event counter mode Timer X (8) To timer X interrupt request bit Timer X count stop bit To CNTR0 interrupt request bit "1" CNTR0 active edge switch bit Q "0" Port P54 latch Port P54 direction register "1" Toggle flip-flop T Q R Timer X latch write pulse Pulse output mode Pulse output mode Data bus Count source selection bit Clock for timer Y Prescaler Y latch (8) f(XCIN) Prescaler Y (8) P55/CNTR1 Timer Y latch (8) Pulse width Timer mode measurement Pulse output mode mode CNTR1 active edge switch bit "0" Event counter mode Timer Y (8) To timer Y interrupt request bit Timer Y count stop bit To CNTR1 interrupt request bit "1" CNTR1 active edge switch bit "1" Q Toggle flip-flop T Q "0" Port P55 latch Port P55 direction register R Timer Y latch write pulse Pulse output mode Pulse output mode Data bus Prescaler 12 latch (8) Clock for timer 12 Prescaler 12 (8) Timer 1 latch (8) Timer 2 latch (8) Timer 1 (8) Timer 2 (8) To timer 2 interrupt request bit To timer 1 interrupt request bit Fig 21. Block diagram of timer X, timer Y, timer 1, and timer 2 Rev.1.10 Nov 14, 2005 REJ03B0166-0110 Page 31 of 91 PRELIMINARY Notice: This is not a final specification. Some parametric limits are subject to change. 3803 Group (Spec.H QzROM version) b7 b0 Timer XY mode register (TM : address 002316) Timer X operating mode bits b1 b0 0 0: Timer mode 0 1: Pulse output mode 1 0: Event counter mode 1 1: Pulse width measurement mode CNTR0 active edge switch bit 0: Interrupt at falling edge Count at rising edge in event counter mode 1: Interrupt at rising edge Count at falling edge in event counter mode Timer X count stop bit 0: Count start 1: Count stop Timer Y operating mode bits b5 b4 0 0: Timer mode 0 1: Pulse output mode 1 0: Event counter mode 1 1: Pulse width measurement mode CNTR1 active edge switch bit 0: Interrupt at falling edge Count at rising edge in event counter mode 1: Interrupt at rising edge Count at falling edge in event counter mode Timer Y count stop bit 0: Count start 1: Count stop Fig 22. Structure of timer XY mode register Rev.1.10 Nov 14, 2005 REJ03B0166-0110 Page 32 of 91 PRELIMINARY Notice: This is not a final specification. Some parametric limits are subject to change. 3803 Group (Spec.H QzROM version) b7 b0 Timer 12, X count source selection register (T12XCSS : address 000E16) Timer 12 count source selection bits b3 b2 b1 b0 0 0 0 0 : f(XIN)/2 or f(XCIN)/2 0 0 0 1 : f(XIN)/4 or f(XCIN)/4 0 0 1 0 : f(XIN)/8 or f(XCIN)/8 0 0 1 1 : f(XIN)/16 or f(XCIN)/16 0 1 0 0 : f(XIN)/32 or f(XCIN)/32 0 1 0 1 : f(XIN)/64 or f(XCIN)/64 0 1 1 0 : f(XIN)/128 or f(XCIN)/128 0 1 1 1 : f(XIN)/256 or f(XCIN)/256 1 0 0 0 : f(XIN)/512 or f(XCIN)/512 1 0 0 1 : f(XIN)/1024 or f(XCIN)/1024 Timer X count source selection bits b7 b6 b5 b4 0 0 0 0 : f(XIN)/2 or f(XCIN)/2 0 0 0 1 : f(XIN)/4 or f(XCIN)/4 0 0 1 0 : f(XIN)/8 or f(XCIN)/8 0 0 1 1 : f(XIN)/16 or f(XCIN)/16 0 1 0 0 : f(XIN)/32 or f(XCIN)/32 0 1 0 1 : f(XIN)/64 or f(XCIN)/64 0 1 1 0 : f(XIN)/128 or f(XCIN)/128 0 1 1 1 : f(XIN)/256 or f(XCIN)/256 1 0 0 0 : f(XIN)/512 or f(XCIN)/512 1 0 0 1 : f(XIN)/1024 or f(XCIN)/1024 1 0 1 0 : f(XCIN) b7 1010: 1011: 1100: 1101: 1110: 1111: Not used 1011: 1100: 1101: 1110: 1111: Not used 1011: 1100: 1101: 1110: 1111: Not used 1011: 1100: 1101: 1110: 1111: Not used b0 Timer Y, Z count source selection register (TYZCSS : address 000F16) Timer Y count source selection bits b3 b2 b1 b0 0 0 0 0 : f(XIN)/2 or f(XCIN)/2 0 0 0 1 : f(XIN)/4 or f(XCIN)/4 0 0 1 0 : f(XIN)/8 or f(XCIN)/8 0 0 1 1 : f(XIN)/16 or f(XCIN)/16 0 1 0 0 : f(XIN)/32 or f(XCIN)/32 0 1 0 1 : f(XIN)/64 or f(XCIN)/64 0 1 1 0 : f(XIN)/128 or f(XCIN)/128 0 1 1 1 : f(XIN)/256 or f(XCIN)/256 1 0 0 0 : f(XIN)/512 or f(XCIN)/512 1 0 0 1 : f(XIN)/1024 or f(XCIN)/1024 1 0 1 0 : f(XCIN) Timer Z count source selection bits b7 b6 b5 b4 0 0 0 0 : f(XIN)/2 or f(XCIN)/2 0 0 0 1 : f(XIN)/4 or f(XCIN)/4 0 0 1 0 : f(XIN)/8 or f(XCIN)/8 0 0 1 1 : f(XIN)/16 or f(XCIN)/16 0 1 0 0 : f(XIN)/32 or f(XCIN)/32 0 1 0 1 : f(XIN)/64 or f(XCIN)/64 0 1 1 0 : f(XIN)/128 or f(XCIN)/128 0 1 1 1 : f(XIN)/256 or f(XCIN)/256 1 0 0 0 : f(XIN)/512 or f(XCIN)/512 1 0 0 1 : f(XIN)/1024 or f(XCIN)/1024 1 0 1 0 : f(XCIN) Fig 23. Structure of timer 12, X and timer Y, Z count source selection registers Rev.1.10 Nov 14, 2005 REJ03B0166-0110 Page 33 of 91 PRELIMINARY 3803 Group (Spec.H QzROM version) * 16-bit Timer The timer Z is a 16-bit timer. When the timer reaches "000016", an underflow occurs at the next count pulse and the corresponding timer latch is reloaded into the timer and the count is continued. When the timer underflows, the interrupt request bit corresponding to the timer Z is set to "1". When reading/writing to the timer Z, perform reading/writing to both the high-order byte and the low-order byte. When reading the timer Z, read from the high-order byte first, followed by the low-order byte. Do not perform the writing to the timer Z between read operation of the high-order byte and read operation of the low-order byte. When writing to the timer Z, write to the low-order byte first, followed by the high-order byte. Do not perform the reading to the timer Z between write operation of the low-order byte and write operation of the high-order byte. The timer Z can select the count source by the timer Z count source selection bits of timer Y, Z count source selection register (bits 7 to 4 at address 000F16). Timer Z can select one of seven operating modes by setting the timer Z mode register (address 002A16). (1) Timer mode * Mode selection This mode can be selected by setting "000" to the timer Z operating mode bits (bits 2 to 0) and setting "0" to the timer/event counter mode switch bit (b7) of the timer Z mode register (address 002A16). * Count source selection In high- or middle-speed mode, 1/2, 1/4, 1/8, 1/16, 1/32, 1/64, 1/128, 1/256, 1/512 or 1/1024 of f(X IN ); or f(X CIN ) can be selected as the count source. In low-speed mode, 1/2, 1/4, 1/8, 1/16, 1/32, 1/64, 1/128, 1/256, 1/512 or 1/1024 of f(XCIN); or f(XCIN) can be selected as the count source. * Interrupt When an underflow occurs, the INT0/timer Z interrupt request bit (bit 0) of the interrupt request register 1 (address 003C16) is set to "1". * Explanation of operation During timer stop, usually write data to a latch and a timer at the same time to set the timer value. The timer count operation is started by setting "0" to the timer Z count stop bit (bit 6) of the timer Z mode register (address 002A16). When the timer reaches "000016", an underflow occurs at the next count pulse and the contents of timer latch are reloaded into the timer and the count is continued. When writing data to the timer during operation, the data is written only into the latch. Then the new latch value is reloaded into the timer at the next underflow. Rev.1.10 Nov 14, 2005 REJ03B0166-0110 Page 34 of 91 Notice: This is not a final specification. Some parametric limits are subject to change. (2) Event counter mode * Mode selection This mode can be selected by setting "000" to the timer Z operating mode bits (bits 2 to 0) and setting "1" to the timer/event counter mode switch bit (bit 7) of the timer Z mode register (address 002A16). The valid edge for the count operation depends on the CNTR2 active edge switch bit (bit 5) of the timer Z mode register (address 002A16). When it is "0", the rising edge is valid. When it is "1", the falling edge is valid. * Interrupt The interrupt at an underflow is the same as the timer mode's. * Explanation of operation The operation is the same as the timer mode's. Set the double-function port of CNTR2 pin and port P47 to input in this mode. Figure.26 shows the timing chart of the timer/event counter mode. (3) Pulse output mode * Mode selection This mode can be selected by setting "001" to the timer Z operating mode bits (bits 2 to 0) and setting "0" to the timer/event counter mode switch bit (b7) of the timer Z mode register (address 002A16). * Count source selection In high- or middle-speed mode, 1/2, 1/4, 1/8, 1/16, 1/32, 1/64, 1/128, 1/256, 1/512 or 1/1024 of f(X IN ); or f(X CIN ) can be selected as the count source. In low-speed mode, 1/2, 1/4, 1/8, 1/16, 1/32, 1/64, 1/128, 1/256, 1/512 or 1/1024 of f(XCIN); or f(XCIN) can be selected as the count source. * Interrupt The interrupt at an underflow is the same as the timer mode's. * Explanation of operation The operation is the same as the timer mode's. Moreover the pulse which is inverted each time the timer underflows is output from CNTR2 pin. When the CNTR2 active edge switch bit (bit 5) of the timer Z mode register (address 002A16) is "0", the output starts with "H" level. When it is "1", the output starts with "L" level. * Precautions The double-function port of CNTR 2 pin and port P4 7 is automatically set to the timer pulse output port in this mode. The output from CNTR2 pin is initialized to the level depending on CNTR2 active edge switch bit by writing to the timer. When the value of the CNTR2 active edge switch bit is changed, the output level of CNTR2 pin is inverted. Figure.27 shows the timing chart of the pulse output mode. PRELIMINARY 3803 Group (Spec.H QzROM version) Notice: This is not a final specification. Some parametric limits are subject to change. (4) Pulse period measurement mode * Mode selection This mode can be selected by setting "010" to the timer Z operating mode bits (bits 2 to 0) and setting "0" to the timer/event counter mode switch bit (b7) of the timer Z mode register (address 002A16). (5) Pulse width measurement mode * Mode selection This mode can be selected by setting "011" to the timer Z operating mode bits (bits 2 to 0) and setting "0" to the timer/event counter mode switch bit (b7) of the timer Z mode register (address 002A16). * Count source selection In high- or middle-speed mode, 1/2, 1/4, 1/8, 1/16, 1/32, 1/64, 1/128, 1/256, 1/512 or 1/1024 of f(X IN ); or f(X CIN ) can be selected as the count source. In low-speed mode, 1/2, 1/4, 1/8, 1/16, 1/32, 1/64, 1/128, 1/256, 1/512 or 1/1024 of f(XCIN); or f(XCIN) can be selected as the count source. * Count source selection In high- or middle-speed mode, 1/2, 1/4, 1/8, 1/16, 1/32, 1/64, 1/128, 1/256, 1/512 or 1/1024 of f(X IN ); or f(X CIN ) can be selected as the count source. In low-speed mode, 1/2, 1/4, 1/8, 1/16, 1/32, 1/64, 1/128, 1/256, 1/512 or 1/1024 of f(XCIN); or f(XCIN) can be selected as the count source. * Interrupt The interrupt at an underflow is the same as the timer mode's. When the pulse period measurement is completed, the INT4/CNTR2 interrupt request bit (bit 5) of the interrupt request register 2 (address 003D16) is set to "1". * Interrupt The interrupt at an underflow is the same as the timer mode's. When the pulse widths measurement is completed, the INT4/CNTR2 interrupt request bit (bit 5) of the interrupt request register 2 (address 003D16) is set to "1". * Explanation of operation The cycle of the pulse which is input from the CNTR 2 pin is measured. When the CNTR2 active edge switch bit (bit 5) of the timer Z mode register (address 002A16) is "0", the timer counts during the term from one falling edge of CNTR2 pin input to the next falling edge. When it is "1", the timer counts during the term from one rising edge input to the next rising edge input. When the valid edge of measurement completion/start is detected, the 1's complement of the timer value is written to the timer latch and "FFFF16" is set to the timer. Furthermore when the timer underflows, the timer Z interrupt request occurs and "FFFF16" is set to the timer. When reading the timer Z, the value of the timer latch (measured value) is read. The measured value is retained until the next measurement completion. * Explanation of operation The pulse width which is input from the CNTR2 pin is measured. When the CNTR2 active edge switch bit (bit 5) of the timer Z mode register (address 002A16) is "0", the timer counts during the term from one rising edge input to the next falling edge input ("H" term). When it is "1", the timer counts during the term from one falling edge of CNTR2 pin input to the next rising edge of input ("L" term). When the valid edge of measurement completion is detected, the 1's complement of the timer value is written to the timer latch. When the valid edge of measurement completion/start is detected, "FFFF16" is set to the timer. When the timer Z underflows, the timer Z interrupt occurs and "FFFF16" is set to the timer Z. When reading the timer Z, the value of the timer latch (measured value) is read. The measured value is retained until the next measurement completion. * Precautions Set the double-function port of CNTR2 pin and port P47 to input in this mode. A read-out of timer value is impossible in this mode. The timer can be written to only during timer stop (no measurement of pulse period). Since the timer latch in this mode is specialized for the read-out of measured values, do not perform any write operation during measurement. "FFFF16" is set to the timer when the timer underflows or when the valid edge of measurement start/completion is detected. Consequently, the timer value at start of pulse period m e a s u r em e n t d e p e n d s o n t h e t i m e r v a l u e j u s t b ef o r e measurement start. Figure.28 shows the timing chart of the pulse period measurement mode. Rev.1.10 Nov 14, 2005 REJ03B0166-0110 Page 35 of 91 * Precautions Set the double-function port of CNTR2 pin and port P47 to input in this mode. A read-out of timer value is impossible in this mode. The timer can be written to only during timer stop (no measurement of pulse widths). Since the timer latch in this mode is specialized for the read-out of measured values, do not perform any write operation during measurement. "FFFF16" is set to the timer when the timer underflows or when the valid edge of measurement start/completion is detected. Consequently, the timer value at start of pulse width m e a s u r em e n t d ep e n d s o n t h e t i m e r v a l u e j u s t b ef o r e measurement start. Figure.29 shows the timing chart of the pulse width measurement mode. PRELIMINARY 3803 Group (Spec.H QzROM version) (6) Programmable waveform generating mode * Mode selection This mode can be selected by setting "100" to the timer Z operating mode bits (bits 2 to 0) and setting "0" to the timer/event counter mode switch bit (b7) of the timer Z mode register (address 002A16). * Count source selection In high- or middle-speed mode, 1/2, 1/4, 1/8, 1/16, 1/32, 1/64, 1/128, 1/256, 1/512 or 1/1024 of f(X IN ); or f(X CIN ) can be selected as the count source. In low-speed mode, 1/2, 1/4, 1/8, 1/16, 1/32, 1/64, 1/128, 1/256, 1/512 or 1/1024 of f(XCIN); or f(XCIN) can be selected as the count source. * Interrupt The interrupt at an underflow is the same as the timer mode's. * Explanation of operation The operation is the same as the timer mode's. Moreover the timer outputs the data set in the output level latch (bit 4) of the timer Z mode register (address 002A16) from the CNTR2 pin each time the timer underflows. Changing the value of the output level latch and the timer latch after an underflow makes it possible to output an optional waveform from the CNTR2 pin. * Precautions The double-function port of CNTR 2 pin and port P4 7 is automatically set to the programmable waveform generating port in this mode. Figure.30 shows the timing chart of the programmable waveform generating mode. (7) Programmable one-shot generating mode * Mode selection This mode can be selected by setting "101" to the timer Z operating mode bits (bits 2 to 0) and setting "0" to the timer/event counter mode switch bit (b7) of the timer Z mode register (address 002A16). * Count source selection In high- or middle-speed mode, 1/2, 1/4, 1/8, 1/16, 1/32, 1/64, 1/128, 1/256, 1/512 or 1/1024 of f(X IN ); or f(X CIN ) can be selected as the count source. * Interrupt The interrupt at an underflow is the same as the timer mode's. The trigger to generate one-shot pulse can be selected by the INT1 active edge selection bit (bit 1) of the interrupt edge selection register (address 003A16). When it is "0", the falling edge active is selected; when it is "1", the rising edge active is selected. When the valid edge of the INT 1 pin is detected, the INT 1 interrupt request bit (bit 1) of the interrupt request register 1 (address 003C16) is set to "1". * Explanation of operation 1. "H" one-shot pulse; Bit 5 of timer Z mode register = "0" The output level of the CNTR2 pin is initialized to "L" at mode selection. When trigger generation (input signal to INT1 pin) is detected, "H" is output from the CNTR2 pin. When an underflow occurs, "L" is output. The "H" one-shot pulse width is set by the setting value to the timer Z register low-order and high-order. When trigger generating is detected during timer count stop, although "H" is output from the CNTR2 pin, "H" output state continues because an underflow does not occur. Rev.1.10 Nov 14, 2005 REJ03B0166-0110 Page 36 of 91 Notice: This is not a final specification. Some parametric limits are subject to change. 2. "L" one-shot pulse; Bit 5 of timer Z mode register = "1" The output level of the CNTR2 pin is initialized to "H" at mode selection. When trigger generation (input signal to INT1 pin) is detected, "L" is output from the CNTR2 pin. When an underflow occurs, "H" is output. The "L" one-shot pulse width is set by the setting value to the timer Z loworder and high-order. When trigger generating is detected during timer count stop, although "L" is output from the CNTR2 pin, "L" output state continues because an underflow does not occur. * Precautions Set the double-function port of INT1 pin and port P42 to input in this mode. The double-function port of CNTR 2 pin and port P4 7 is automatically set to the programmable one-shot generating port in this mode. This mode cannot be used in low-speed mode. If the value of the CNTR2 active edge switch bit is changed during one-shot generating enabled or generating one-shot pulse, then the output level from CNTR2 pin changes. Figure.31 shows the timing chart of the programmable one-shot generating mode. <Notes regarding all modes> * Timer Z write control Which write control can be selected by the timer Z write control bit (bit 3) of the timer Z mode register (address 002A16), writing data to both the latch and the timer at the same time or writing data only to the latch. When the operation "writing data only to the latch" is selected, the value is set to the timer latch by writing data to the address of timer Z and the timer is updated at next underflow. After reset release, the operation "writing data to both the latch and the timer at the same time" is selected, and the value is set to both the latch and the timer at the same time by writing data to the address of timer Z. In the case of writing data only to the latch, if writing data to the latch and an underflow are performed almost at the same time, the timer value may become undefined. * Timer Z read control A read-out of timer value is impossible in pulse period measurement mode and pulse width measurement mode. In the other modes, a read-out of timer value is possible regardless of count operating or stopped. However, a read-out of timer latch value is impossible. * Switch of interrupt active edge of CNTR2 and INT1 Each interrupt active edge depends on setting of the CNTR 2 active edge switch bit and the INT1 active edge selection bit. * Switch of count source When switching the count source by the timer Z count source selection bits, the value of timer count is altered in inconsiderable amount owing to generating of thin pulses on the count input signals. Therefore, select the timer count source before setting the value to the prescaler and the timer. * Usage of CNTR2 pin as normal I/O port P47 To use the CNTR 2 pin as normal I/O port P4 7 , set timer Z operating mode bits (b2, b1, b0) of timer Z mode register (address 002A16) to "000". PRELIMINARY Notice: This is not a final specification. Some parametric limits are subject to change. 3803 Group (Spec.H QzROM version) CNTR2 active edge Data bus switch bit Programmable one-shot "1" generating mode P42/INT1 Programmable one-shot generating circuit Programmable one-shot generating mode "0" Programmable waveform generating mode D Output level latch To INT1 interrupt request bit Q T Pulse output mode S Q T Q "001" CNTR2 active edge switch bit "0" "1" Pulse output mode "100" "101" Timer Z operating mode bits Port P47 latch Timer Z low-order latch Timer Z high-order latch Timer Z low-order Timer Z high-order To timer Z interrupt request bit Port P47 direction register Pulse period measurement mode Pulse width measurement mode Edge detection circuit "1" "0" CNTR2 active edge switch bit XIN XCIN Clock for timer z P47/CNTR2 "1" "0" Timer Z count stop bit Timer/Event counter mode switch bit Count source Divider selection bit (1/2, 1/4, 1/8, 1/16, 1/32, 1/64, 1/128, 1/256, 1/512, 1/1024) Fig 24. Block diagram of timer Z Rev.1.10 Nov 14, 2005 REJ03B0166-0110 f(XCIN) Page 37 of 91 To CNTR2 interrupt request bit PRELIMINARY 3803 Group (Spec.H QzROM version) b7 Notice: This is not a final specification. Some parametric limits are subject to change. b0 Timer Z mode register (TZM : address 002A16) Timer Z operating mode bits b2 b1 b0 0 0 0 : Timer/Event counter mode 0 0 1 : Pulse output mode 0 1 0 : Pulse period measurement mode 0 1 1 : Pulse width measurement mode 1 0 0 : Programmable waveform generating mode 1 0 1 : Programmable one-shot generating mode 1 1 0 : Not available 1 1 1 : Not available Timer Z write control bit 0 : Writing data to both latch and timer simultaneously 1 : Writing data only to latch Output level latch 0 : "L" output 1 : "H" output CNTR2 active edge switch bit 0 : *Event counter mode: Count at rising edge *Pulse output mode: Start outputting "H" *Pulse period measurement mode: Measurement between two falling edges *Pulse width measurement mode: Measurement of "H" term *Programmable one-shot generating mode: After start outputting "L", "H" one-shot pulse generated *Interrupt at falling edge 1 : *Event counter mode: Count at falling edge *Pulse output mode: Start outputting "L" *Pulse period measurement mode: Measurement between two rising edges *Pulse width measurement mode: Measurement of "L" term *Programmable one-shot generating mode: After start outputting "H", "L" one-shot pulse generated *Interrupt at rising edge Timer Z count stop bit 0 : Count start 1 : Count stop Timer/Event counter mode switch bit (Note) 0 : Timer mode 1 : Event counter mode Note: When selecting the modes except the timer/event counter mode, set "0" to this bit. Fig 25. Structure of timer Z mode register Rev.1.10 Nov 14, 2005 REJ03B0166-0110 Page 38 of 91 PRELIMINARY Notice: This is not a final specification. Some parametric limits are subject to change. 3803 Group (Spec.H QzROM version) FFFF16 TL 000016 TR TR TR TL : Value set to timer latch TR : Timer interrupt request Fig 26. Timing chart of timer/event counter mode FFFF16 TL 000016 TR Waveform output from CNTR2 pin CNTR2 TR TR TR CNTR2 TL : Value set to timer latch TR : Timer interrupt request CNTR2 : CNTR2 interrupt request (CNTR2 active edge switch bit = "0"; Falling edge active) Fig 27. Timing chart of pulse output mode Rev.1.10 Nov 14, 2005 REJ03B0166-0110 Page 39 of 91 PRELIMINARY Notice: This is not a final specification. Some parametric limits are subject to change. 3803 Group (Spec.H QzROM version) 000016 T3 T2 T1 FFFF16 TR FFFF16 + T1 TR T2 T3 FFFF16 Signal input from CNTR2 pin CNTR2 CNTR2 CNTR2 CNTR2 CNTR2 of rising edge active TR : Timer interrupt request CNTR2 : CNTR2 interrupt request Fig 28. Timing chart of pulse period measurement mode (Measuring term between two rising edges) 000016 T3 T2 T1 FFFF16 TR Signal input from CNTR2 pin FFFF16 + T2 T3 CNTR2 T1 CNTR2 CNTR2 CNTR2 interrupt of rising edge active; Measurement of "L" width TR : Timer interrupt request CNTR2 : CNTR2 interrupt request Fig 29. Timing chart of pulse width measurement mode (Measuring "L" term) Rev.1.10 Nov 14, 2005 REJ03B0166-0110 Page 40 of 91 PRELIMINARY Notice: This is not a final specification. Some parametric limits are subject to change. 3803 Group (Spec.H QzROM version) FFFF16 T3 L T2 T1 000016 Signal output from CNTR2 pin L T3 T1 TR TR CNTR2 T2 TR TR CNTR2 L : Timer initial value TR : Timer interrupt request CNTR2 : CNTR2 interrupt request (CNTR2 active edge switch bit = "0"; Falling edge active) Fig 30. Timing chart of programmable waveform generating mode FFFF16 L TR Signal input from INT1 pin Signal output from CNTR2 pin TR L L L CNTR2 TR CNTR2 L : One-shot pulse width TR : Timer interrupt request CNTR2 : CNTR2 interrupt request (CNTR2 active edge switch bit = "0"; Falling edge active) Fig 31. Timing chart of programmable one-shot generating mode ("H" one-shot pulse generating) Rev.1.10 Nov 14, 2005 REJ03B0166-0110 Page 41 of 91 PRELIMINARY Notice: This is not a final specification. Some parametric limits are subject to change. 3803 Group (Spec.H QzROM version) SERIAL INTERFACE * Serial I/O1 Serial I/O1 can be used as either clock synchronous or asynchronous (UART) serial I/O. A dedicated timer is also provided for baud rate generation. (1) Clock Synchronous Serial I/O Mode Clock synchronous serial I/O1 mode can be selected by setting the serial I/O1 mode selection bit of the serial I/O1 control register (bit 6 of address 001A16) to "1". For clock synchronous serial I/O, the transmitter and the receiver must use the same clock. If an internal clock is used, transfer is started by a write signal to the transmit/receive buffer register. Data bus Serial I/O1 control register Address 001816 Receive buffer register 1 Receive buffer full flag (RBF) Receive shift register 1 P44/RXD1 Address 001A16 Receive interrupt request (RI) Shift clock Clock control circuit P46/SCLK1 BRG count source selection bit f(XIN) Serial I/O1 synchronous clock selection bit Frequency division ratio 1/(n+1) Baud rate generator 1 1/4 (f(XCIN) in low-speed mode) Address 001C16 1/4 P47/SRDY1 F/F Falling-edge detector Clock control circuit Shift clock P45/TXD1 Transmit shift completion flag (TSC) Transmit interrupt source selection bit Transmit interrupt request (TI) Transmit shift register 1 Transmit buffer register 1 Transmit buffer empty flag (TBE) Serial I/O1 status register Address 001816 Address 001916 Data bus Fig 32. Block diagram of clock synchronous serial I/O1 Transfer shift clock (1/2 to 1/2048 of the internal clock, or an external clock) Serial output TXD1 D0 D1 D2 D3 D4 D5 D6 D7 Serial input RXD1 D0 D1 D2 D3 D4 D5 D6 D7 Receive enable signal SRDY1 Write pulse to receive/transmit buffer register 1 (address 001816) TBE = 0 TBE = 1 TSC = 0 RBF = 1 TSC = 1 Overrun error (OE) detection Notes 1: As the transmit interrupt (TI), which can be selected, either when the transmit buffer has emptied (TBE=1) or after the transmit shift operation has ended (TSC=1), by setting the transmit interrupt source selection bit (TIC) of the serial I/O1 control register. 2: If data is written to the transmit buffer register when TSC=0, the transmit clock is generated continuously and serial data is output continuously from the TXD pin. 3: The receive interrupt (RI) is set when the receive buffer full flag (RBF) becomes "1". Fig 33. Operation of clock synchronous serial I/O1 Rev.1.10 Nov 14, 2005 REJ03B0166-0110 Page 42 of 91 PRELIMINARY Notice: This is not a final specification. Some parametric limits are subject to change. 3803 Group (Spec.H QzROM version) (2) Asynchronous Serial I/O (UART) Mode Clock asynchronous serial I/O mode (UART) can be selected by clearing the serial I/O1 mode selection bit (b6) of the serial I/O1 control register to "0". Eight serial data transfer formats can be selected, and the transfer formats used by a transmitter and receiver must be identical. The transmit and receive shift registers each have a buffer, but the two buffers have the same address in a memory. Since the shift register cannot be written to or read from directly, transmit data is written to the transmit buffer register, and receive data is read from the receive buffer register. The transmit buffer register can also hold the next data to be transmitted, and the receive buffer register can hold a character while the next character is being received. Data bus Address 001816 Receive buffer register 1 OE Serial I/O1 control register Address 001A16 Receive buffer full flag (RBF) Receive interrupt request (RI) Character length selection bit P44/RXD1 ST detector 7 bits Receive shift register 1 1/16 8 bits PE FE UART1 control register SP detector Address 001B16 Clock control circuit Serial I/O1 synchronous clock selection bit P46/SCLK1 BRG count source selection bit f(XIN) (f(XCIN) in low-speed mode) 1/4 Frequency division ratio 1/(n+1) Baud rate generator Address 001C16 ST/SP/PA generator Transmit shift completion flag (TSC) 1/16 P45/TXD1 Transmit shift register 1 Transmit interrupt source selection bit Transmit interrupt request (TI) Character length selection bit Transmit buffer empty flag (TBE) Transmit buffer register 1 Serial I/O1 status register Address 001816 Address 001916 Data bus Fig 34. Block diagram of UART serial I/O1 Transmit or receive clock Transmit buffer write signal TBE=0 TSC=0 TBE=1 Serial output T XD 1 TBE=0 TBE=1 ST D0 D1 SP TSC=1* ST D0 D1 SP Generated at 2nd bit in 2-stop-bit mode 1 start bit 7 or 8 data bit 1 or 0 parity bit 1 or 2 stop bit (s) Receive buffer read signal RBF=0 RBF=1 Serial input RXD1 ST D0 D1 SP RBF=1 ST D0 D1 SP Notes 1: Error flag detection occurs at the same time that the RBF flag becomes "1" (at 1st stop bit, during reception). 2: As the transmit interrupt (TI), when either the TBE or TSC flag becomes "1", can be selected to occur depending on the setting of the transmit interrupt source selection bit (TIC) of the serial I/O1 control register. 3: The receive interrupt (RI) is set when the RBF flag becomes "1". 4: After data is written to the transmit buffer when TSC=1, 0.5 to 1.5 cycles of the data shift cycle are necessary until changing to TSC=0. Fig 35. Operation of UART serial I/O1 Rev.1.10 Nov 14, 2005 REJ03B0166-0110 Page 43 of 91 PRELIMINARY 3803 Group (Spec.H QzROM version) [Transmit Buffer Register 1/Receive Buffer Register 1 (TB1/RB1)] 001816 The transmit buffer register 1 and the receive buffer register 1 are located at the same address. The transmit buffer is write-only and the receive buffer is read-only. If a character bit length is 7 bits, the MSB of data stored in the receive buffer is "0". [Serial I/O1 Status Register (SIO1STS)] 001916 The read-only serial I/O1 status register consists of seven flags (bits 0 to 6) which indicate the operating status of the serial I/O1 function and various errors. Three of the flags (bits 4 to 6) are valid only in UART mode. The receive buffer full flag (bit 1) is cleared to "0" when the receive buffer register is read. If there is an error, it is detected at the same time that data is transferred from the receive shift register to the receive buffer register, and the receive buffer full flag is set. A write to the serial I/O1 status register clears all the error flags OE, PE, FE, and SE (bit 3 to bit 6, respectively). Writing "0" to the serial I/O1 enable bit SIOE (bit 7 of the serial I/O1 control register) also clears all the status flags, including the error flags. Bits 0 to 6 of the serial I/O1 status register are initialized to "0" at reset, but if the transmit enable bit (bit 4) of the serial I/O1 control register has been set to "1", the transmit shift completion flag (bit 2) and the transmit buffer empty flag (bit 0) become "1". [Serial I/O1 Control Register (SIO1CON)] 001A16 The serial I/O1 control register consists of eight control bits for the serial I/O1 function. [UART1 Control Register (UART1CON)] 001B16 The UART control register consists of four control bits (bits 0 to 3) which are valid when asynchronous serial I/O is selected and set the data format of an data transfer, and one bit (bit 4) which is always valid and sets the output structure of the P45/TXD1 pin. [Baud Rate Generator 1 (BRG1)] 001C16 The baud rate generator determines the baud rate for serial transfer. The baud rate generator divides the frequency of the count source by 1/(n + 1), where n is the value written to the baud rate generator. Rev.1.10 Nov 14, 2005 REJ03B0166-0110 Page 44 of 91 Notice: This is not a final specification. Some parametric limits are subject to change. PRELIMINARY Notice: This is not a final specification. Some parametric limits are subject to change. 3803 Group (Spec.H QzROM version) b7 b0 Serial I/O1 status register (SIO1STS : address 001916) b7 Transmit buffer empty flag (TBE) 0: Buffer full 1: Buffer empty Receive buffer full flag (RBF) 0: Buffer empty 1: Buffer full Transmit shift completion flag (TSC) 0: Transmit shift in progress 1: Transmit shift completed Overrun error flag (OE) 0: No error 1: Overrun error Parity error flag (PE) 0: No error 1: Parity error Framing error flag (FE) 0: No error 1: Framing error Summing error flag (SE) 0: (OE) U (PE) U (FE)=0 1: (OE) U (PE) U (FE)=1 Not used (returns "1" when read) b7 b0 UART1 control register (UART1CON : address 001B16) Character length selection bit (CHAS) 0: 8 bits 1: 7 bits Parity enable bit (PARE) 0: Parity checking disabled 1: Parity checking enabled Parity selection bit (PARS) 0: Even parity 1: Odd parity Stop bit length selection bit (STPS) 0: 1 stop bit 1: 2 stop bits P45/TXD1 P-channel output disable bit (POFF) 0: CMOS output (in output mode) 1: N-channel open drain output (in output mode) Not used (return "1" when read) Fig 36. Structure of serial I/O1 control registers Rev.1.10 Nov 14, 2005 REJ03B0166-0110 Page 45 of 91 b0 Serial I/O1 control register (SIO1CON : address 001A16) BRG count source selection bit (CSS) 0: f(XIN) (f(XCIN) in low-speed mode) 1: f(XIN)/4 (f(XCIN)/4 in low-speed mode) Serial I/O1 synchronous clock selection bit (SCS) 0: BRG output divided by 4 when clock synchronous serial I/O1 is selected, BRG output divided by 16 when UART is selected. 1: External clock input when clock synchronous serial I/O1 is selected, external clock input divided by 16 when UART is selected. SRDY1 output enable bit (SRDY) 0: P47 pin operates as normal I/O pin 1: P47 pin operates as SRDY1 output pin Transmit interrupt source selection bit (TIC) 0: Interrupt when transmit buffer has emptied 1: Interrupt when transmit shift operation is completed Transmit enable bit (TE) 0: Transmit disabled 1: Transmit enabled Receive enable bit (RE) 0: Receive disabled 1: Receive enabled Serial I/O1 mode selection bit (SIOM) 0: Clock asynchronous (UART) serial I/O 1: Clock synchronous serial I/O Serial I/O1 enable bit (SIOE) 0: Serial I/O1 disabled (pins P44 to P47 operate as normal I/O pins) 1: Serial I/O1 enabled (pins P44 to P47 operate as serial I/O1 pins) PRELIMINARY 3803 Group (Spec.H QzROM version) Notice: This is not a final specification. Some parametric limits are subject to change. <Notes concerning serial I/O1> 1. Notes when selecting clock synchronous serial I/O 1.1 Stop of transmission operation * Note Clear the serial I/O1 enable bit and the transmit enable bit to "0" (serial I/O and transmit disabled). 2. Notes when selecting clock asynchronous serial I/O 2.1 Stop of transmission operation * Note Clear the transmit enable bit to "0" (transmit disabled). The transmission operation does not stop by clearing the serial I/O1 enable bit to "0". * Reason Since transmission is not stopped and the transmission circuit is not initialized even if only the serial I/O1 enable bit is cleared to "0" (serial I/O disabled), the internal transmission is running (in this case, since pins T X D 1 , R X D1, S CLK1 , and S RDY1 function as I/O ports, the transmission data is not output). When data is written to the transmit buffer register in this state, data starts to be shifted to the transmit shift register. When the serial I/O1 enable bit is set to "1" at this time, the data during internally shifting is output to the TXD1 pin and an operation failure occurs. * Reason Since transmission is not stopped and the transmission circuit is not initialized even if only the serial I/O1 enable bit is cleared to "0" (serial I/O disabled), the internal transmission is running (in this case, since pins T X D 1 , R X D 1 , S CLK1 , and S RDY1 function as I/O ports, the transmission data is not output). When data is written to the transmit buffer register in this state, data starts to be shifted to the transmit shift register. When the serial I/O1 enable bit is set to "1" at this time, the data during internally shifting is output to the TXD1 pin and an operation failure occurs. 1.2 Stop of receive operation * Note Clear the receive enable bit to "0" (receive disabled), or clear the serial I/O1 enable bit to "0" (serial I/O disabled). 2.2 Stop of receive operation * Note Clear the receive enable bit to "0" (receive disabled). 1.3 Stop of transmit/receive operation * Note Clear both the transmit enable bit and receive enable bit to "0" (transmit and receive disabled). (when data is transmitted and received in the clock synchronous serial I/O mode, any one of data transmission and reception cannot be stopped.) * Reason In the clock synchronous serial I/O mode, the same clock is used for transmission and reception. If any one of transmission and reception is disabled, a bit error occurs because transmission and reception cannot be synchronized. In this mode, the clock circuit of the transmission circuit also operates for data reception. Accordingly, the transmission circuit does not stop by clearing only the transmit enable bit to "0" (transmit disabled). Also, the transmission circuit is not initialized by clearing the serial I/O1 enable bit to "0" (serial I/O disabled) (refer to 1.1). Rev.1.10 Nov 14, 2005 REJ03B0166-0110 Page 46 of 91 2.3 Stop of transmit/receive operation * Note 1 (only transmission operation is stopped) Clear the transmit enable bit to "0" (transmit disabled). The transmission operation does not stop by clearing the serial I/O1 enable bit to "0". * Reason Since transmission is not stopped and the transmission circuit is not initialized even if only the serial I/O1 enable bit is cleared to "0" (serial I/O disabled), the internal transmission is running (in this case, since pins T X D 1 , R X D 1 , S CLK1 , and S RDY1 function as I/O ports, the transmission data is not output). When data is written to the transmit buffer register in this state, data starts to be shifted to the transmit shift register. When the serial I/O1 enable bit is set to "1" at this time, the data during internally shifting is output to the TXD1 pin and an operation failure occurs. * Note 2 (only receive operation is stopped) Clear the receive enable bit to "0" (receive disabled). PRELIMINARY 3803 Group (Spec.H QzROM version) 3. SRDY1 output of reception side * Note When signals are output from the SRDY1 pin on the reception side by using an external clock in the clock synchronous serial I/O mode, set all of the receive enable bit, the SRDY1 output enable bit, and the transmit enable bit to "1" (transmit enabled). 4. Setting serial I/O1 control register again * Note Set the serial I/O1 control register again after the transmission and the reception circuits are reset by clearing both the transmit enable bit and the receive enable bit to "0". Clear both the transmit enable bit (TE) and the receive enable bit (RE) to "0" Set the bits 0 to 3 and bit 6 of the serial I/O1 control register Set both the transmit enable bit (TE) and the receive enable bit (RE), or one of them to "1" Can be set with the LDM instruction at the same time 5.Data transmission control with referring to transmit shift register completion flag * Note After the transmit data is written to the transmit buffer register, the transmit shift register completion flag changes from "1" to "0" with a delay of 0.5 to 1.5 shift clocks. When data transmission is controlled with referring to the flag after writing the data to the transmit buffer register, note the delay. 6. Transmission control when external clock is selected * Note When an external clock is used as the synchronous clock for data transmission, set the transmit enable bit to "1" at "H" of the SCLK1 input level. Also, write data to the transmit buffer register at "H" of the SCLK1 input level. Rev.1.10 Nov 14, 2005 REJ03B0166-0110 Page 47 of 91 Notice: This is not a final specification. Some parametric limits are subject to change. 7. Transmit interrupt request when transmit enable bit is set * Note When using the transmit interrupt, take the following sequence. 1. Set the serial I/O1 transmit interrupt enable bit to "0" (disabled). 2. Set the transmit enable bit to "1". 3. Set the serial I/O1 transmit interrupt request bit to "0" after 1 or more instruction has executed. 4. Set the serial I/O1 transmit interrupt enable bit to "1" (enabled). * Reason When the transmit enable bit is set to "1", the transmit buffer empty flag and the transmit shift register shift completion flag are also set to "1". Therefore, regardless of selecting which timing for the generating of transmit interrupts, the interrupt request is generated and the transmit interrupt request bit is set at this point. PRELIMINARY Notice: This is not a final specification. Some parametric limits are subject to change. 3803 Group (Spec.H QzROM version) * Serial I/O2 The serial I/O2 function can be used only for clock synchronous serial I/O. For clock synchronous serial I/O2, the transmitter and the receiver must use the same clock. If the internal clock is used, transfer is started by a write signal to the serial I/O2 register (address 001F16). b7 b0 Serial I/O2 control register (SIO2CON : address 001D16) Internal synchronous clock selection bits b2 b1 b0 0 0 0: f(XIN)/8 (f(XCIN)/8 in low-speed mode) 0 0 1: f(XIN)/16 (f(XCIN)/16 in low-speed mode) 0 1 0: f(XIN)/32 (f(XCIN)/32 in low-speed mode) 0 1 1: f(XIN)/64 (f(XCIN)/64 in low-speed mode) 1 1 0: f(XIN)/128 f(XCIN)/128 in low-speed mode) 1 1 1: f(XIN)/256 (f(XCIN)/256 in low-speed mode) Serial I/O2 port selection bit 0: I/O port 1: SOUT2, SCLK2 signal output SRDY2 output enable bit 0: I/O port 1: SRDY2 signal output Transfer direction selection bit 0: LSB first 1: MSB first Serial I/O2 synchronous clock selection bit 0: External clock 1: Internal clock P51/SOUT2 P-channel output disable bit 0: CMOS output (in output mode) 1: N-channel open drain output (in output mode) [Serial I/O2 Control Register (SIO2CON)] 001D16 The serial I/O2 control register contains eight bits which control various serial I/O2 functions. Fig 37. Structure of Serial I/O2 control register Internal synchronous clock selection bits 1/8 Divider 1/16 f(XIN) (f(XCIN) in low-speed mode) P53 latch 1/64 1/128 1/256 Serial I/O2 synchronous clock selection bit "1" "0" SRDY2 Synchronization circuit "1" SRDY2 output enable bit S CLK2 P53/SRDY2 Data bus 1/32 "0" External clock P52 latch "0" P52/SCLK2 "1" Serial I/O2 port selection bit P51 latch Serial I/O counter 2 (3) "0" P51/SOUT2 "1" Serial I/O2 port selection bit Serial I/O2 register (8) P50/SIN2 Address 001F16 Fig 38. Block diagram of serial I/O2 Rev.1.10 Nov 14, 2005 REJ03B0166-0110 Page 48 of 91 Serial I/O2 interrupt request PRELIMINARY Notice: This is not a final specification. Some parametric limits are subject to change. 3803 Group (Spec.H QzROM version) Transfer clock (Note 1) Serial I/O2 register write signal (Note 2) Serial I/O2 output SOUT2 D0 D1 D2 D3 D4 D5 D6 D7 Serial I/O2 input SIN2 Receive enable signal SRDY2 Serial I/O2 interrupt request bit set Notes1: When the internal clock is selected as the transfer clock, the divide ratio of f(XIN), or (f(XCIN) in low-speed mode, can be selected by setting bits 0 to 2 of the serial I/O2 control register. 2: When the internal clock is selected as the transfer clock, the SOUT2 pin goes to high impedance after transfer completion. Fig 39. Timing of serial I/O2 Rev.1.10 Nov 14, 2005 REJ03B0166-0110 Page 49 of 91 PRELIMINARY Notice: This is not a final specification. Some parametric limits are subject to change. 3803 Group (Spec.H QzROM version) * Serial I/O3 Serial I/O3 can be used as either clock synchronous or asynchronous (UART) serial I/O3. A dedicated timer is also provided for baud rate generation. (1) Clock Synchronous Serial I/O Mode Clock synchronous serial I/O3 mode can be selected by setting the serial I/O3 mode selection bit of the serial I/O3 control register (bit 6 of address 003216) to "1". For clock synchronous serial I/O, the transmitter and the receiver must use the same clock. If an internal clock is used, transfer is started by a write signal to the transmit/receive buffer register. Data bus Serial I/O3 control register Address 003016 Receive buffer register 3 Receive buffer full flag (RBF) Receive shift register 3 P34/RXD3 Address 003216 Receive interrupt request (RI) Shift clock Clock control circuit P36/SCLK3 BRG count source selection bit f(XIN) Serial I/O3 synchronous clock selection bit Frequency division ratio 1/(n+1) Baud rate generator 3 1/4 (f(XCIN) in low-speed mode) Address 002F16 1/4 P37/SRDY3 F/F Falling-edge detector Clock control circuit Shift clock P35/TXD3 Transmit shift completion flag (TSC) Transmit interrupt source selection bit Transmit interrupt request (TI) Transmit shift register 3 Transmit buffer register 3 Transmit buffer empty flag (TBE) Serial I/O3 status register Address 003016 Address 003116 Data bus Fig 40. Block diagram of clock synchronous serial I/O3 Transfer shift clock (1/2 to 1/2048 of the internal clock, or an external clock) Serial output TXD3 D0 D1 D2 D3 D4 D5 D6 D7 Serial input RXD3 D0 D1 D2 D3 D4 D5 D6 D7 Receive enable signal SRDY3 Write pulse to receive/transmit buffer register (address 003016) TBE = 0 TBE = 1 TSC = 0 RBF = 1 TSC = 1 Overrun error (OE) detection Notes 1: As the transmit interrupt (TI), which can be selected, either when the transmit buffer has emptied (TBE=1) or after the transmit shift operation has ended (TSC=1), by setting the transmit interrupt source selection bit (TIC) of the serial I/O3 control register. 2: If data is written to the transmit buffer register when TSC=0, the transmit clock is generated continuously and serial data is output continuously from the TXD pin. 3: The receive interrupt (RI) is set when the receive buffer full flag (RBF) becomes "1". Fig 41. Operation of clock synchronous serial I/O3 Rev.1.10 Nov 14, 2005 REJ03B0166-0110 Page 50 of 91 PRELIMINARY Notice: This is not a final specification. Some parametric limits are subject to change. 3803 Group (Spec.H QzROM version) (2) Asynchronous Serial I/O (UART) Mode Clock asynchronous serial I/O mode (UART) can be selected by clearing the serial I/O3 mode selection bit (b6) of the serial I/O3 control register to "0". Eight serial data transfer formats can be selected, and the transfer formats used by a transmitter and receiver must be identical. The transmit and receive shift registers each have a buffer, but the two buffers have the same address in a memory. Since the shift register cannot be written to or read from directly, transmit data is written to the transmit buffer register, and receive data is read from the receive buffer register. The transmit buffer register can also hold the next data to be transmitted, and the receive buffer register can hold a character while the next character is being received. Data bus Address 003016 Receive buffer register 3 OE Serial I/O3 control register Address 003216 Receive buffer full flag (RBF) Receive interrupt request (RI) Character length selection bit P34/RXD3 ST detector 7 bits Receive shift register 3 1/16 8 bits PE FE UART3 control register SP detector Address 003316 Clock control circuit Serial I/O3 synchronous clock selection bit P36/SCLK3 BRG count source selection bit f(XIN) (f(XCIN) in low-speed mode) 1/4 Frequency division ratio 1/(n+1) Baud rate generator 3 Address 002F16 ST/SP/PA generator Transmit shift completion flag (TSC) 1/16 P35/TXD3 Transmit shift register 3 Transmit interrupt source selection bit Transmit interrupt request (TI) Character length selection bit Transmit buffer empty flag (TBE) Transmit buffer register 3 Serial I/O3 status register Address 003016 Address 003116 Data bus Fig 42. Block diagram of UART serial I/O3 Transmit or receive clock Transmit buffer write signal TBE=0 TSC=0 TBE=1 Serial output T XD 3 TBE=0 TBE=1 ST D0 D1 SP TSC=1* ST D0 D1 1 start bit 7 or 8 data bit 1 or 0 parity bit 1 or 2 stop bit (s) SP * Generated at 2nd bit in 2-stop-bit mode Receive buffer read signal RBF=0 RBF=1 Serial input RXD3 ST D0 D1 SP RBF=1 ST D0 D1 SP Notes 1: Error flag detection occurs at the same time that the RBF flag becomes "1" (at 1st stop bit, during reception). 2: As the transmit interrupt (TI), when either the TBE or TSC flag becomes "1", can be selected to occur depending on the setting of the transmit interrupt source selection bit (TIC) of the serial I/O3 control register. 3: The receive interrupt (RI) is set when the RBF flag becomes "1". 4: After data is written to the transmit buffer when TSC=1, 0.5 to 1.5 cycles of the data shift cycle are necessary until changing to TSC=0. Fig 43. Operation of UART serial I/O3 Rev.1.10 Nov 14, 2005 REJ03B0166-0110 Page 51 of 91 PRELIMINARY 3803 Group (Spec.H QzROM version) [Transmit Buffer Register 3/Receive Buffer Register 3 (TB3/RB3)] 003016 The transmit buffer register 3 and the receive buffer register 3 are located at the same address. The transmit buffer is write-only and the receive buffer is read-only. If a character bit length is 7 bits, the MSB of data stored in the receive buffer is "0". [Serial I/O3 Status Register (SIO3STS)] 003116 The read-only serial I/O3 status register consists of seven flags (bits 0 to 6) which indicate the operating status of the serial I/O3 function and various errors. Three of the flags (bits 4 to 6) are valid only in UART mode. The receive buffer full flag (bit 1) is cleared to "0" when the receive buffer register is read. If there is an error, it is detected at the same time that data is transferred from the receive shift register to the receive buffer register, and the receive buffer full flag is set. A write to the serial I/O3 status register clears all the error flags OE, PE, FE, and SE (bit 3 to bit 6, respectively). Writing "0" to the serial I/O3 enable bit SIOE (bit 7 of the serial I/O3 control register) also clears all the status flags, including the error flags. Bits 0 to 6 of the serial I/O3 status register are initialized to "0" at reset, but if the transmit enable bit (bit 4) of the serial I/O3 control register has been set to "1", the transmit shift completion flag (bit 2) and the transmit buffer empty flag (bit 0) become "1". [Serial I/O3 Control Register (SIO3CON)] 003216 The serial I/O3 control register consists of eight control bits for the serial I/O3 function. [UART3 Control Register (UART3CON)] 003316 The UART control register consists of four control bits (bits 0 to 3) which are valid when asynchronous serial I/O is selected and set the data format of an data transfer, and one bit (bit 4) which is always valid and sets the output structure of the P35/TXD3 pin. [Baud Rate Generator 3 (BRG3)] 002F16 The baud rate generator determines the baud rate for serial transfer. The baud rate generator divides the frequency of the count source by 1/(n + 1), where n is the value written to the baud rate generator. Rev.1.10 Nov 14, 2005 REJ03B0166-0110 Page 52 of 91 Notice: This is not a final specification. Some parametric limits are subject to change. PRELIMINARY Notice: This is not a final specification. Some parametric limits are subject to change. 3803 Group (Spec.H QzROM version) b7 b0 Serial I/O3 status register (SIO3STS : address 003116) b7 Transmit buffer empty flag (TBE) 0: Buffer full 1: Buffer empty Receive buffer full flag (RBF) 0: Buffer empty 1: Buffer full Transmit shift completion flag (TSC) 0: Transmit shift in progress 1: Transmit shift completed Overrun error flag (OE) 0: No error 1: Overrun error Parity error flag (PE) 0: No error 1: Parity error Framing error flag (FE) 0: No error 1: Framing error Summing error flag (SE) 0: (OE) U (PE) U (FE)=0 1: (OE) U (PE) U (FE)=1 Not used (returns "1" when read) b7 b0 UART3 control register (UART3CON : address 003316) Character length selection bit (CHAS) 0: 8 bits 1: 7 bits Parity enable bit (PARE) 0: Parity checking disabled 1: Parity checking enabled Parity selection bit (PARS) 0: Even parity 1: Odd parity Stop bit length selection bit (STPS) 0: 1 stop bit 1: 2 stop bits P35/TXD3 P-channel output disable bit (POFF) 0: CMOS output (in output mode) 1: N-channel open drain output (in output mode) Not used (return "1" when read) Fig 44. Structure of serial I/O3 control registers Rev.1.10 Nov 14, 2005 REJ03B0166-0110 Page 53 of 91 b0 Serial I/O3 control register (SIO3CON : address 003216) BRG count source selection bit (CSS) 0: f(XIN) (f(XCIN) in low-speed mode) 1: f(XIN)/4 (f(XCIN)/4 in low-speed mode) Serial I/O3 synchronous clock selection bit (SCS) 0: BRG output divided by 4 when clock synchronous serial I/O3 is selected, BRG output divided by 16 when UART is selected. 1: External clock input when clock synchronous serial I/O3 is selected, external clock input divided by 16 when UART is selected. SRDY3 output enable bit (SRDY) 0: P37 pin operates as normal I/O pin 1: P37 pin operates as SRDY3 output pin Transmit interrupt source selection bit (TIC) 0: Interrupt when transmit buffer has emptied 1: Interrupt when transmit shift operation is completed Transmit enable bit (TE) 0: Transmit disabled 1: Transmit enabled Receive enable bit (RE) 0: Receive disabled 1: Receive enabled Serial I/O3 mode selection bit (SIOM) 0: Clock asynchronous (UART) serial I/O 1: Clock synchronous serial I/O Serial I/O3 enable bit (SIOE) 0: Serial I/O3 disabled (pins P34 to P37 operate as normal I/O pins) 1: Serial I/O3 enabled (pins P34 to P37 operate as serial I/O3 pins) PRELIMINARY 3803 Group (Spec.H QzROM version) Notice: This is not a final specification. Some parametric limits are subject to change. <Notes concerning serial I/O3> 1. Notes when selecting clock synchronous serial I/O 1.1 Stop of transmission operation * Note Clear the serial I/O3 enable bit and the transmit enable bit to "0" (serial I/O and transmit disabled). 2. Notes when selecting clock asynchronous serial I/O 2.1 Stop of transmission operation * Note Clear the transmit enable bit to "0" (transmit disabled). The transmission operation does not stop by clearing the serial I/O3 enable bit to "0". * Reason Since transmission is not stopped and the transmission circuit is not initialized even if only the serial I/O3 enable bit is cleared to "0" (serial I/O disabled), the internal transmission is running (in this case, since pins T X D 3 , R X D 3 , S CLK3 , and S RDY3 function as I/O ports, the transmission data is not output). When data is written to the transmit buffer register in this state, data starts to be shifted to the transmit shift register. When the serial I/O3 enable bit is set to "1" at this time, the data during internally shifting is output to the TXD3 pin and an operation failure occurs. * Reason Since transmission is not stopped and the transmission circuit is not initialized even if only the serial I/O3 enable bit is cleared to "0" (serial I/O disabled), the internal transmission is running (in this case, since pins T X D 3 , R X D 3 , S CLK3 , and S RDY3 function as I/O ports, the transmission data is not output). When data is written to the transmit buffer register in this state, data starts to be shifted to the transmit shift register. When the serial I/O3 enable bit is set to "1" at this time, the data during internally shifting is output to the TXD3 pin and an operation failure occurs. 1.2 Stop of receive operation * Note Clear the receive enable bit to "0" (receive disabled), or clear the serial I/O3 enable bit to "0" (serial I/O disabled). 2.2 Stop of receive operation * Note Clear the receive enable bit to "0" (receive disabled). 1.3 Stop of transmit/receive operation * Note Clear both the transmit enable bit and receive enable bit to "0" (transmit and receive disabled). (when data is transmitted and received in the clock synchronous serial I/O mode, any one of data transmission and reception cannot be stopped.) * Reason In the clock synchronous serial I/O mode, the same clock is used for transmission and reception. If any one of transmission and reception is disabled, a bit error occurs because transmission and reception cannot be synchronized. In this mode, the clock circuit of the transmission circuit also operates for data reception. Accordingly, the transmission circuit does not stop by clearing only the transmit enable bit to "0" (transmit disabled). Also, the transmission circuit is not initialized by clearing the serial I/O3 enable bit to "0" (serial I/O disabled) (refer to 1.1). Rev.1.10 Nov 14, 2005 REJ03B0166-0110 Page 54 of 91 2.3 Stop of transmit/receive operation * Note 1 (only transmission operation is stopped) Clear the transmit enable bit to "0" (transmit disabled). The transmission operation does not stop by clearing the serial I/O3 enable bit to "0". * Reason Since transmission is not stopped and the transmission circuit is not initialized even if only the serial I/O3 enable bit is cleared to "0" (serial I/O disabled), the internal transmission is running (in this case, since pins T X D 3 , R X D 3 , S CLK3 , and S RDY3 function as I/O ports, the transmission data is not output). When data is written to the transmit buffer register in this state, data starts to be shifted to the transmit shift register. When the serial I/O3 enable bit is set to "1" at this time, the data during internally shifting is output to the TXD3 pin and an operation failure occurs. * Note 2 (only receive operation is stopped) Clear the receive enable bit to "0" (receive disabled). PRELIMINARY 3803 Group (Spec.H QzROM version) 3. SRDY3 output of reception side * Note When signals are output from the SRDY3 pin on the reception side by using an external clock in the clock synchronous serial I/O mode, set all of the receive enable bit, the SRDY3 output enable bit, and the transmit enable bit to "1" (transmit enabled). 4. Setting serial I/O3 control register again * Note Set the serial I/O3 control register again after the transmission and the reception circuits are reset by clearing both the transmit enable bit and the receive enable bit to "0". Clear both the transmit enable bit (TE) and the receive enable bit (RE) to "0" Set the bits 0 to 3 and bit 6 of the serial I/O3 control register Set both the transmit enable bit (TE) and the receive enable bit (RE), or one of them to "1" Can be set with the LDM instruction at the same time 5.Data transmission control with referring to transmit shift register completion flag * Note After the transmit data is written to the transmit buffer register, the transmit shift register completion flag changes from "1" to "0" with a delay of 0.5 to 1.5 shift clocks. When data transmission is controlled with referring to the flag after writing the data to the transmit buffer register, note the delay. 6. Transmission control when external clock is selected * Note When an external clock is used as the synchronous clock for data transmission, set the transmit enable bit to "1" at "H" of the SCLK3 input level. Also, write data to the transmit buffer register at "H" of the SCLK input level. Rev.1.10 Nov 14, 2005 REJ03B0166-0110 Page 55 of 91 Notice: This is not a final specification. Some parametric limits are subject to change. 7. Transmit interrupt request when transmit enable bit is set * Note When using the transmit interrupt, take the following sequence. 1. Set the serial I/O3 transmit interrupt enable bit to "0" (disabled). 2. Set the transmit enable bit to "1". 3. Set the serial I/O3 transmit interrupt request bit to "0" after 1 or more instruction has executed. 4. Set the serial I/O3 transmit interrupt enable bit to "1" (enabled). * Reason When the transmit enable bit is set to "1", the transmit buffer empty flag and the transmit shift register shift completion flag are also set to "1". Therefore, regardless of selecting which timing for the generating of transmit interrupts, the interrupt request is generated and the transmit interrupt request bit is set at this point. PRELIMINARY Notice: This is not a final specification. Some parametric limits are subject to change. 3803 Group (Spec.H QzROM version) PULSE WIDTH MODULATION (PWM) The 3803 group (Spec.H QzROM version) has PWM functions with an 8-bit resolution, based on a signal that is the clock input XIN or that clock input divided by 2 or the clock input XCIN or that clock input divided by 2 in low-speed mode. * Data Setting The PWM output pin also functions as port P56. Set the PWM period by the PWM prescaler, and set the "H" term of output pulse by the PWM register. If the value in the PWM prescaler is n and the value in the PWM register is m (where n = 0 to 255 and m = 0 to 255): PWM period = 255 x (n+1) / f(XIN) = 31.875 x (n+1) s (when f(XIN) = 8 MHz, count source selection bit = "0") Output pulse "H" term = PWM period x m / 255 = 0.125 x (n+1) x m s (when f(XIN) = 8 MHz, count source selection bit = "0") * PWM Operation When bit 0 (PWM enable bit) of the PWM control register is set to "1", operation starts by initializing the PWM output circuit, and pulses are output starting at an "H". If the PWM register or PWM prescaler is updated during PWM output, the pulses will change in the cycle after the one in which the change was made. 31.875 x m x (n+1) 255 s PWM output T = [31.875 x (n+1)] s m : Contents of PWM register n : Contents of PWM prescaler T : PWM period (when f(XIN) = 8 MHz, count source selection bit = "0") Fig 45. Timing of PWM period Data bus PWM prescaler pre-latch PWM register pre-latch Transfer control circuit PWM prescaler latch PWM register latch PWM prescaler PWM register Count source selection bit XIN (XCIN at lowspeed mode) "0" 1/2 Port P56 "1" Port P56 latch PWM function enable bit Fig 46. Block diagram of PWM function Rev.1.10 Nov 14, 2005 REJ03B0166-0110 Page 56 of 91 PRELIMINARY Notice: This is not a final specification. Some parametric limits are subject to change. 3803 Group (Spec.H QzROM version) b7 b0 PWM control register (PWMCON: address 002B16) PWM function enable bit 0 : PWM disabled 1 : PWM enabled Count source selection bit 0 : f(XIN) (f(XCIN) at low-speed mode) 1 : f(XIN)/2 (f(XCIN)/2 at low-speed mode) Not used (return "0" when read) Fig 47. Structure of PWM control register A B C B C T = T2 PWM output T PWM register write signal T T2 (Changes "H" term from "A" to " B".) PWM prescaler write signal (Changes PWM period from "T" to "T2".) When the contents of the PWM register or PWM prescaler have changed, the PWM output will change from the next period after the change. Fig 48. PWM output timing when PWM register or PWM prescaler is changed <Notes> The PWM starts after the PWM function enable bit is set to enable and "L" level is output from the PWM pin. The length of this "L" level output is as follows: n+1 ---------------------sec 2 x f ( X IN ) (Count source selection bit = 0, where n is the value set in the prescaler) n + 1--------------sec f ( X IN ) (Count source selection bit = 1, where n is the value set in the prescaler) Rev.1.10 Nov 14, 2005 REJ03B0166-0110 Page 57 of 91 PRELIMINARY Notice: This is not a final specification. Some parametric limits are subject to change. 3803 Group (Spec.H QzROM version) A/D CONVERTER [AD Conversion Register 1, 2 (AD1, AD2)] 0035 16 , 003816 The AD conversion register is a read-only register that stores the result of an A/D conversion. When reading this register during an A/D conversion, the previous conversion result is read. Bit 7 of the AD conversion register 2 is the conversion mode selection bit. When this bit is set to "0", the A/D converter becomes the 10-bit A/D mode. When this bit is set to "1", that becomes the 8-bit A/D mode. The conversion result of the 8-bit A/D mode is stored in the AD conversion register 1. As for 10-bit A/D mode, not only 10-bit reading but also only high-order 8-bit reading of conversion result can be performed by selecting the reading procedure of the AD conversion registers 1, 2 after A/D conversion is completed (in Figure.50). As for 10-bit A/D mode, the 8-bit reading inclined to MSB is performed when reading the AD converter register 1 after A/D conversion is started; and when the AD converter register 1 is read after reading the AD converter register 2, the 8-bit reading inclined to LSB is performed. * Channel Selector The channel selector selects one of ports P67/AN7 to P60/AN0 or P07/AN15 to P00/AN8, and inputs the voltage to the comparator. * Comparator and Control Circuit The comparator and control circuit compares an analog input voltage with the comparison voltage, and then stores the result in the AD conversion registers 1, 2. When an A/D conversion is completed, the control circuit sets the AD conversion completion bit and the AD interrupt request bit to "1". Note that because the comparator consists of a capacitor coupling, set f(X IN ) to 500 kHz or more during an A/D conversion. b7 b0 AD/DA control register (ADCON : address 003416) Analog input pin selection bits 1 b2 b1 b0 0 0 0 0 1 1 1 1 [AD/DA Control Register (ADCON)] 003416 The AD/DA control register controls the A/D conversion process. Bits 0 to 2 and bit 4 select a specific analog input pin. Bit 3 signals the completion of an A/D conversion. The value of this bit remains at "0" during an A/D conversion, and changes to "1" when an A/D conversion ends. Writing "0" to this bit starts the A/D conversion. =0 (n = 0) P60/AN0 P61/AN1 P62/AN2 P63/AN3 P64/AN4 P65/AN5 P66/AN6 P67/AN7 or or or or or or or or P00/AN8 P01/AN9 P02/AN10 P03/AN11 P04/AN12 P05/AN13 P06/AN14 P07/AN15 Analog input pin selection bit 2 0: AN0 to AN7 side 1: AN8 to AN15 side Not used (returns "0" when read) DA1 output enable bit 0: DA1 output disabled 1: DA1 output enabled * 10-bit A/D mode (10-bit reading) V REF Vref = ------------- x n (n = 0 - 1023) 1024 * 8-bit A/D mode V REF Vref = ------------- x n (n - 0.5) (n = 1 - 255) 256 0: 1: 0: 1: 0: 1: 0: 1: AD conversion completion bit 0: Conversion in progress 1: Conversion completed * Comparison Voltage Generator The comparison voltage generator divides the voltage between AV SS and V REF into 1024, and that outputs the comparison voltage in the 10-bit A/D mode (256 division in 8-bit A/D mode). The A/D converter successively compares the comparison voltage Vref in each mode, dividing the V REF voltage (see below), with the input voltage. * 10-bit A/D mode (8-bit reading) V REF Vref = ------------- x n (n = 0 - 255) 256 0 0 1 1 0 0 1 1 DA2 output enable bit 0: DA2 output disabled 1: DA2 output enabled Fig 49. Structure of AD/DA control register 8-bit reading (Read only address 003516) AD conversion register 1 (AD1: address 003516) b7 b0 b9 b8 b7 b6 b5 b4 b3 b2 10-bit reading (Read address 003816 before 003516) AD conversion register 2 (AD2: address 003816) b7 0 AD conversion register 1 (AD1: address 003516) b7 b0 b7 b6 b5 b4 b3 b2 b1 b0 Note : Bits 2 to 6 of address 003816 become "0" at reading. Fig 50. Structure of 10-bit A/D mode reading Rev.1.10 Nov 14, 2005 REJ03B0166-0110 Page 58 of 91 b0 b9 b8 PRELIMINARY Notice: This is not a final specification. Some parametric limits are subject to change. 3803 Group (Spec.H QzROM version) Data bus AD/DA control register b7 (Address 003416) b0 4 A/D converter interrupt request A/D control circuit Comparator Channel selector P60/AN0 P61/AN1 P62/AN2 P63/AN3 P64/AN4 P65/AN5 P66/AN6 P67/AN7 P00/AN8 P01/AN9 P02/AN10 P03/AN11 P04/AN12 P05/AN13 P06/AN14 P07/AN15 10 Resistor ladder VREF AVSS Fig 51. Block diagram of A/D converter Rev.1.10 Nov 14, 2005 REJ03B0166-0110 AD conversion register 2 AD conversion register 1 Page 59 of 91 (Address 003816) (Address 003516) PRELIMINARY Notice: This is not a final specification. Some parametric limits are subject to change. 3803 Group (Spec.H QzROM version) D/A CONVERTER The 3803 group (Spec.H QzROM version) has two internal D/A converters (DA1 and DA2) with 8-bit resolution. The D/A conversion is performed by setting the value in each DA conversion register. The result of D/A conversion is output from the DA1 or DA2 pin by setting the DA output enable bit to "1". When using the D/A converter, the corresponding port direction register bit (P30 /DA 1 or P3 1 /DA 2 ) must be set to "0" (input status). The output analog voltage V is determined by the value n (decimal notation) in the DA conversion register as follows: DA1 conversion register (8) DA1 output enable bit Data bus R-2R resistor ladder V = VREFx n/256 (n = 0 to 255) Where VREF is the reference voltage. At reset, the DA conversion registers are cleared to "0016", and the DA output enable bits are cleared to "0", and the P30/DA1 and P31/DA2 pins become high impedance. The DA output does not have buffers. Accordingly, connect an external buffer when driving a low-impedance load. P30/DA1 DA2 conversion register (8) DA2 output enable bit R-2R resistor ladder P31/DA2 Fig 52. Block diagram of D/A converter "0" DA1 output enable bit R R R R R R R 2R P30/DA1 "1" 2R 2R 2R MSB DA1 conversion register "0" 2R 2R 2R 2R LSB "1" AVSS VREF Fig 53. Equivalent connection circuit of D/A converter (DA1) Rev.1.10 Nov 14, 2005 REJ03B0166-0110 2R Page 60 of 91 PRELIMINARY Notice: This is not a final specification. Some parametric limits are subject to change. 3803 Group (Spec.H QzROM version) WATCHDOG TIMER The watchdog timer gives a mean of returning to the reset status when a program cannot run on a normal loop (for example, because of a software run-away). The watchdog timer consists of an 8-bit watchdog timer L and an 8-bit watchdog timer H. * Watchdog Timer Initial Value Watchdog timer L is set to "FF16" and watchdog timer H is set to "FF16" by writing to the watchdog timer control register (address 001E16) or at a reset. Any write instruction that causes a write signal can be used, such as the STA, LDM, CLB, etc. Data can only be written to bits 6 and 7 of the watchdog timer control register. Regardless of the value written to bits 0 to 5, the abovementioned value will be set to each timer. * Watchdog Timer Operations The watchdog timer stops at reset and starts to count down by writing to the watchdog timer control register (address 001E16). An internal reset occurs at an underflow of the watchdog timer H. The reset is released after waiting for a reset release time and the program is processed from the reset vector address. Accordingly, programming is usually performed so that writing to the watchdog timer control register may be started before an underflow. If writing to the watchdog timer control register is not performed once, the watchdog timer does not function. * Bit 6 of Watchdog Timer Control Register * When bit 6 of the watchdog timer control register is "0", the MCU enters the stop mode by execution of STP instruction. Just after releasing the stop mode, the watchdog timer restarts counting (Note.) . When executing the WIT instruction, the watchdog timer does not stop. * When bit 6 is "1", execution of STP instruction causes an internal reset. When this bit is set to "1" once, it cannot be rewritten to "0" by program. Bit 6 is "0" at reset. The following shows the period between the write execution to the watchdog timer control register and the underflow of watchdog timer H. Bit 7 of the watchdog timer control register is "0": when XCIN = 32.768 kHz; 32 s when XIN = 16 MHz; 65.536 ms Bit 7 of the watchdog timer control register is "1": when XCIN = 32.768 kHz; 125 ms when XIN = 16 MHz; 256 s Note. The watchdog timer continues to count even while waiting for a stop release. Therefore, make sure that watchdog timer H does not underflow during this period. "FF16" is set when watchdog timer control register is written to. XCIN "10" Main clock division ratio selection bits (Note) Watchdog timer L (8) 1/16 "FF16" is set when watchdog timer control register is written to. "0" "1" "00" "01" XIN Data bus Watchdog timer H (8) Watchdog timer H count source selection bit STP instruction function selection bit STP instruction Reset circuit RESET Internal reset Note: Any one of high-speed, middle-speed or low-speed mode is selected by bits 7 and 6 of the CPU mode register. Fig 54. Block diagram of Watchdog timer b7 b0 Watchdog timer control register (WDTCON : address 001E16) Watchdog timer H (for read-out of high-order 6 bit) STP instruction function selection bit 0: Entering stop mode by execution of STP instruction 1: Internal reset by execution of STP instruction Watchdog timer H count source selection bit 0: Watchdog timer L underflow 1: f(XIN)/16 or f(XCIN)/16 Fig 55. Structure of Watchdog timer control register Rev.1.10 Nov 14, 2005 REJ03B0166-0110 Page 61 of 91 PRELIMINARY Notice: This is not a final specification. Some parametric limits are subject to change. 3803 Group (Spec.H QzROM version) RESET CIRCUIT To reset the microcomputer, RESET pin should be held at an "L" level for 16 cycles or more of X IN . Then the RESET pin is returned to an "H" level (the power source voltage should be between 1.8 V and 5.5 V, and the oscillation should be stable), reset is released. After the reset is completed, the program starts from the address contained in address FFFD16 (high-order byte) and address FFFC16 (low-order byte). Make sure that the reset input voltage is less than 0.29 V for VCC of 1.8 V. VCC RESET VCC 1.8 V 0V RESET 0.29 V or less 0V RESET VCC Power source voltage detection circuit Example at VCC = 5 V Fig 56. Reset circuit example XIN RESET Internal reset ? Address ? ? ? FFFC FFFD ADH,L Reset address from the vector table. ? Data ? ? ? ADL ADH SYNC XIN : 10.5 to 18.5 clock cycles Notes 1: The frequency relation of f(XIN) and f() is f(XIN) = 8 * f(). 2: The question marks (?) indicate an undefined state that depends on the previous state. Fig 57. Reset sequence Rev.1.10 Nov 14, 2005 REJ03B0166-0110 Page 62 of 91 PRELIMINARY Notice: This is not a final specification. Some parametric limits are subject to change. 3803 Group (Spec.H QzROM version) Address Register contents Address Register contents (1) Port P0 (P0) 000016 0016 (34) Timer Z (low-order) (TZL) 002816 FF16 (2) Port P0 direction register (P0D) 000116 0016 (35) Timer Z (high-order) (TZH) 002916 FF16 (3) Port P1 (P1) 000216 0016 (36) Timer Z mode register (TZM) 002A16 0016 (4) Port P1 direction register (P1D) 000316 0016 (37) PWM control register (PWMCON) 002B16 0016 (5) Port P2 (P2) 000416 0016 (38) PWM prescaler (PREPWM) 002C16 X X X X X X X X (6) Port P2 direction register (P2D) 000516 0016 (39) PWM register (PWM) 002D16 X X X X X X X X (7) Port P3 (P3) 000616 0016 (40) Baud rate generator 3 (BRG3) 002F16 X X X X X X X X (8) Port P3 direction register (P3D) 000716 0016 (41) Transmit/Receive buffer register 3 (TB3/RB3) 003016 X X X X X X X X (9) Port P4 (P4) 000816 0016 (42) Serial I/O3 status register (SIO3STS) 003116 1 0 0 0 0 0 0 0 (10) Port P4 direction register (P4D) 000916 0016 (43) Serial I/O3 control register (SIO3CON) 003216 (11) Port P5 (P5) 000A16 0016 (44) UART3 control register (UART3CON) 003316 1 1 1 0 0 0 0 0 (12) Port P5 direction register (P5D) 000B16 0016 (45) AD/DA control register (ADCON) 003416 0 0 0 0 1 0 0 0 (13) Port P6 (P6) 000C16 0016 (46) AD conversion register 1 (AD1) 003516 X X X X X X X X (14) Port P6 direction register (P6D) 000D16 0016 (47) DA1 conversion register (DA1) 003616 0016 (15) Timer 12, X count source selection register (T12XCSS) 000E16 0 0 1 1 0 0 1 1 (48) DA2 conversion register (DA2) 003716 0016 (16) Timer Y, Z count source selection register (TYZCSS) 000F16 0 0 1 1 0 0 1 1 (49) AD conversion register 2 (AD2) 003816 0 0 0 0 0 0 X X (17) MISRG 001016 (50) Interrupt source selection register (INTSEL) 003916 0016 (51) Interrupt edge selection register (INTEDGE) 003A16 0016 0016 (18) Transmit/Receive buffer register 1 (TB1/RB1) 001816 X X X X X X X X 0016 (19) Serial I/O1 status register (SIO1STS) 001916 1 0 0 0 0 0 0 0 (52) CPU mode register (CPUM) 003B16 0 1 0 0 1 0 0 0 (20) Serial I/O1 control register (SIO1CON) 001A16 (53) Interrupt request register 1 (IREQ1) 003C16 (21) UART1 control register (UART1CON) 001B16 1 1 1 0 0 0 0 0 (54) Interrupt request register 2 (IREQ2) 003D16 0016 (22) Baud rate generator 1 (BRG1) 001C16 X X X X X X X X (55) Interrupt control register 1 (ICON1) 003E16 0016 (23) Serial I/O2 control register (SIO2CON) 001D16 (56) Interrupt control register 2 (ICON2) 003F16 0016 (24) Watchdog timer control register (WDTCON) 001E16 0 0 1 1 1 1 1 1 (57) Port P0 pull-up control register (PULL0) 0FF016 0016 (25) Serial I/O2 register (SIO2) 001F16 X X X X X X X X (58) Port P1 pull-up control register (PULL1) 0FF116 0016 (26) Prescaler 12 (PRE12) 002016 FF16 (59) Port P2 pull-up control register (PULL2) 0FF216 0016 (27) Timer 1 (T1) 002116 0116 (60) Port P3 pull-up control register (PULL3) 0FF316 0016 (28) Timer 2 (T2) 002216 FF16 (61) Port P4 pull-up control register (PULL4) 0FF416 0016 (29) Timer XY mode register (TM) 002316 0016 (62) Port P5 pull-up control register (PULL5) 0FF516 0016 (30) Prescaler X (PREX) 002416 FF16 (63) Port P6 pull-up control register (PULL6) 0FF616 0016 (31) Timer X (TX) 002516 FF16 (64) Processor status register (PS) X X X X X 1 X X (32) Prescaler Y (PREY) 002616 FF16 (65) Program counter (PCH) FFFD16 contents (33) Timer Y (TY) 002716 FF16 (PCL) FFFC16 contents 0016 0016 Note : X: Not fixed. Since the initial values for other than above mentioned registers and RAM contents are indefinite at reset, they must be set. Fig 58. Internal status at reset Rev.1.10 Nov 14, 2005 REJ03B0166-0110 Page 63 of 91 0016 PRELIMINARY Notice: This is not a final specification. Some parametric limits are subject to change. 3803 Group (Spec.H QzROM version) CLOCK GENERATING CIRCUIT The 3803 group (Spec.H QzROM version) has two built-in oscillation circuits: main clock XIN-XOUT oscillation circuit and sub clock XCIN-XCOUT oscillation circuit. An oscillation circuit can be formed by connecting a resonator between XIN and XOUT (XCIN and XCOUT). Use the circuit constants in accordance with the resonator manufacturer's recommended values. No external resistor is needed between XIN and X OUT since a feed-back resistor exists on-chip.(An external feed-back resistor may be needed depending on conditions.) However, an external feedback resistor is needed between XCIN and XCOUT. Immediately after power on, only the XIN oscillation circuit starts oscillating, and XCIN and XCOUT pins function as I/O ports. * Frequency Control (1) Middle-speed mode The internal clock is the frequency of XIN divided by 8. After reset is released, this mode is selected. (2) High-speed mode The internal clock is half the frequency of XIN. (3) Low-speed mode The internal clock is half the frequency of XCIN. (4) Low power dissipation mode The low power consumption operation can be realized by stopping the main clock XIN in low-speed mode. To stop the main clock, set bit 5 of the CPU mode register to "1". When the main clock XIN is restarted (by setting the main clock stop bit to "0"), set sufficient time for oscillation to stabilize. The sub-clock XCIN-XCOUT oscillating circuit can not directly input clocks that are generated externally. Accordingly, make sure to cause an external resonator to oscillate. Oscillation Control (1) Stop mode If the STP instruction is executed, the internal clock stops at an "H" level, and X IN and X CIN oscillators stop. When the oscillation stabilizing time set after STP instruction released bit (bit 0 of address 001016) is "0", the prescaler 12 is set to "FF16" and timer 1 is set to "0116". When the oscillation stabilizing time set after STP instruction released bit is "1", set the sufficient time for oscillation of used oscillator to stabilize since nothing is set to the prescaler 12 and timer 1. After STP instruction is released, the input of the prescaler 12 is connected to count source which had set at executing the STP instruction, and the output of the prescaler 12 is connected to timer 1. Oscillator restarts when an external interrupt is received, but the internal clock is not supplied to the CPU (remains at "H") until timer 1 underflows. The internal clock is supplied for the first time, when timer 1 underflows. This ensures time for the clock oscillation using the ceramic resonators to be stabilized. When the oscillator is restarted by reset, apply "L" level to the RESET pin until the oscillation is stable since a wait time will not be generated. (2) Wait mode If the WIT instruction is executed, the internal clock stops at an "H" level, but the oscillator does not stop. The internal clock restarts at reset or when an interrupt is received. Since the oscillator does not stop, normal operation can be started immediately after the clock is restarted. To ensure that the interrupts will be received to release the STP or WIT state, their interrupt enable bits must be set to "1" before executing of the STP or WIT instruction. When releasing the STP state, the prescaler 12 and timer 1 will start counting the clock XIN divided by 16. Accordingly, set the timer 1 interrupt enable bit to "0" before executing the STP instruction. <Notes> * If you switch the mode between middle/high-speed and lowspeed, stabilize both XIN and XCIN oscillations. The sufficient time is required for the sub clock to stabilize, especially immediately after power on and at returning from stop mode. When switching the mode between middle/high-speed and low-speed, set the frequency on condition that f(X IN ) > 3xf(XCIN). * When using the quartz-crystal oscillator of high frequency, such as 16 MHz etc., it may be necessary to select a specific oscillator with the specification demanded. * When using the oscillation stabilizing time set after STP instruction released bit set to "1", evaluate time to stabilize oscillation of the used oscillator and set the value to the timer 1 and prescaler 12. Rev.1.10 Nov 14, 2005 REJ03B0166-0110 Page 64 of 91 PRELIMINARY Notice: This is not a final specification. Some parametric limits are subject to change. 3803 Group (Spec.H QzROM version) XCIN XCOUT Rf CCIN XIN XOUT Rd (Note) Rd CCOUT CIN COUT Notes : Insert a damping resistor if required. The resistance will vary depending on the oscillator and the oscillation drive capacity setting. Use the value recommended by the maker of the oscillator. Also, if the oscillator manufacturer's data sheet specifies to add a feedback resistor externally to the chip though a feedback resistor exists on-chip, insert a feedback resistor between XIN and XOUT following the instruction. Fig 59. Ceramic resonator circuit XCIN XIN XCOUT Open External oscillation circuit XOUT Open External oscillation circuit VCC VCC VSS VSS Fig 60. External clock input circuit Rev.1.10 Nov 14, 2005 REJ03B0166-0110 Page 65 of 91 PRELIMINARY Notice: This is not a final specification. Some parametric limits are subject to change. 3803 Group (Spec.H QzROM version) XCOUT XCIN "0" "1" Port XC switch bit XIN XOUT (Note 4) Main clock division ratio selection bits (Note 1) Divider Low-speed mode 1/2 Prescaler 12 1/4 High-speed or middle-speed mode Timer 1 (Note 3) Reset or STP instruction (Note 2) Main clock division ratio selection bits (Note 1) Middle-speed mode Timing (internal clock) High-speed or low-speed mode Main clock stop bit Q S S R STP instruction WIT instruction Q R Reset Q S R STP instruction Reset Interrupt disable flag l Interrupt request Notes1: Either high-speed, middle-speed or low-speed mode is selected by bits 7 and 6 of the CPU mode register. When low-speed mode is selected, set port XC switch bit (b4) to "1". 2: f(XIN)/16 is supplied as the count source to the prescaler 12 at reset, the count source before executing the STP instruction is supplied as the count source at executing STP instruction. 3: When bit 0 of MISRG is "0", timer 1 is set "0116" and prescaler 12 is set "FF16" automatically. When bit 0 of MISRG is "1" , set the appropriate value to them in accordance with oscillation stabilizing time required by the using oscillator because nothing is automatically set into timer 1 and prescaler 12. 4: Although a feed-back resistor exists on-chip, an external feed-back resistor may be needed depending on conditions. Fig 61. System clock generating circuit block diagram (Single-chip mode) Rev.1.10 Nov 14, 2005 REJ03B0166-0110 Page 66 of 91 PRELIMINARY Notice: This is not a final specification. Some parametric limits are subject to change. 3803 Group (Spec.H QzROM version) Reset C "0 M 4 " C "1 M 6 " 1" " "0 " " High-speed mode (f() = 4 MHz) CM7=0 CM6=0 CM5=0 (8 MHz oscillating) CM4=1 (32 kHz oscillating) CM6 "1""0" "1 C "0 M 7 C M " " 6 "0 CM 4 "1""0" "0 4 C M " 0" "1 M 6 " C " "1 Middle-speed mode (f() = 1 MHz) CM7=0 CM6=1 CM5=0 (8 MHz oscillating) CM4=1 (32 kHz oscillating) High-speed mode (f() = 4 MHz) CM7=0 CM6=0 CM5=0 (8 MHz oscillating) CM4=0 (32 kHz stopped) CM6 "1""0" "1 " " CM 7 "1""0" CM 4 "1""0" Middle-speed mode (f() = 1 MHz) CM7=0 CM6=1 CM5=0 (8 MHz oscillating) CM4=0 (32 kHz stopped) CM 5 "1""0" Low-speed mode (f() = 16 kHz) CM7=1 CM6=0 CM5=0 (8 MHz oscillating) CM4=1 (32 kHz oscillating) Low-speed mode (f() = 16 kHz) CM7=1 CM6=0 CM5=1 (8 MHz stopped) CM4=1 (32 kHz oscillating) b7 b4 CPU mode register (CPUM : address 003B16) CM4 : Port XC switch bit 0 : I/O port function (stop oscillating) 1 : XCIN-XCOUT oscillating function CM5 : Main clock (XIN-XOUT) stop bit 0 : Operating 1 : Stopped CM7, CM6: Main clock division ratio selection bit b7 b6 0 0 : = f(XIN)/2 (High-speed mode) 0 1 : = f(XIN)/8 (Middle-speed mode) 1 0 : = f(XCIN)/2 (Low-speed mode) 1 1 : Not available Notes1: Switch the mode by the allows shown between the mode blocks. (Do not switch between the modes directly without an allow.) 2: The all modes can be switched to the stop mode or the wait mode and return to the source mode when the stop mode or the wait mode is ended. 3: Timer operates in the wait mode. 4: When the stop mode is ended, a delay of approximately 1 ms occurs by connecting prescaler 12 and Timer 1 in middle/highspeed mode. 5: When the stop mode is ended, a delay of approximately 0.25 s occurs by Timer 1 and Timer 2 in low-speed mode. 6: Wait until oscillation stabilizes after oscillating the main clock X IN before the switching from the low-speed mode to middle/ high-speed mode. 7: The example assumes that 8 MHz is being applied to the X IN pin and 32 kHz to the X CIN pin. indicates the internal clock. Fig 62. State transitions of system clock Rev.1.10 Nov 14, 2005 REJ03B0166-0110 Page 67 of 91 PRELIMINARY 3803 Group (Spec.H QzROM version) NOTES ON PROGRAMMING Processor Status Register The contents of the processor status register (PS) after a reset are undefined, except for the interrupt disable flag (I) which is "1". After a reset, initialize flags which affect program execution. In particular, it is essential to initialize the index X mode (T) and the decimal mode (D) flags because of their effect on calculations. Interrupts The contents of the interrupt request bits do not change immediately after they have been written. After writing to an interrupt request register, execute at least one instruction before performing a BBC or BBS instruction. Decimal Calculations * To calculate in decimal notation, set the decimal mode flag (D) to "1", then execute an ADC or SBC instruction. After executing an ADC or SBC instruction, execute at least one instruction before executing a SEC, CLC, or CLD instruction. * In decimal mode, the values of the negative (N), overflow (V), and zero (Z) flags are invalid. Timers If a value n (between 0 and 255) is written to a timer latch, the frequency division ratio is 1/(n+1). Multiplication and Division Instructions * The index X mode (T) and the decimal mode (D) flags do not affect the MUL and DIV instruction. * The execution of these instructions does not change the contents of the processor status register. Ports The contents of the port direction registers cannot be read. The following cannot be used: * The data transfer instruction (LDA, etc.) * The operation instruction when the index X mode flag (T) is "1" * The instruction with the addressing mode which uses the value of a direction register as an index * The bit-test instruction (BBC or BBS, etc.) to a direction register * The read-modify-write instructions (ROR, CLB, or SEB, etc.) to a direction register. Use instructions such as LDM and STA, etc., to set the port direction registers. Serial Interface In clock synchronous serial I/O, if the receive side is using an external clock and it is to output the SRDY signal, set the transmit enable bit, the receive enable bit, and the SRDY output enable bit to "1". Serial I/O1 continues to output the final bit from the TXD pin after transmission is completed. SOUT2 pin for serial I/O2 goes to high impedance after transfer is completed. When in serial I/Os 1 and 3 (clock-synchronous mode) or in serial I/O2, an external clock is used as synchronous clock, write transmission data to the transmit buffer register or serial I/O2 register, during transfer clock is "H". Rev.1.10 Nov 14, 2005 REJ03B0166-0110 Page 68 of 91 Notice: This is not a final specification. Some parametric limits are subject to change. A/D Converter The comparator uses capacitive coupling amplifier whose charge will be lost if the clock frequency is too low. Therefore, make sure that f(XIN) in the middle/high-speed mode is at least on 500 kHz during an A/D conversion. Do not execute the STP instruction during an A/D conversion. D/A Converter The accuracy of the D/A converter becomes rapidly poor under the VCC = 4.0 V or less condition; a supply voltage of VCC 4.0 V is recommended. When a D/A converter is not used, set all values of DAi conversion registers (i=1, 2) to "0016". Instruction Execution Time The instruction execution time is obtained by multiplying the period of the internal clock by the number of cycles needed to execute an instruction. The number of cycles required to execute an instruction is shown in the list of machine instructions. The period of the internal clock is double of the XIN period in high-speed mode. Reserved Area, Reserved Bit Do not write any data to the reserved area in the SFR area and the special page. (Do not change the contents after reset.) CPU Mode Register Be sure to fix bit 3 of the CPU mode register (address 003B16) to "1". PRELIMINARY 3803 Group (Spec.H QzROM version) Notice: This is not a final specification. Some parametric limits are subject to change. NOTES ON USAGE Termination of Unused Pins. Be sure to perform the termination of unused pins. The shortest (Note) Handling of Power Source Pins In order to avoid a latch-up occurrence, connect a capacitor suitable for high frequencies as bypass capacitor between power source pin (VCC pin) and GND pin (VSS pin), and between power source pin (VCC pin) and analog power source input pin (AVSS pin). Besides, connect the capacitor to as close as possible. For bypass capacitor which should not be located too far from the pins to be connected, a ceramic capacitor of 0.01 F-0.1 F is recommended. Power Source Voltage When the power source voltage value of a microcomputer is less than the value which is indicated as the recommended operating conditions, the microcomputer does not operate normally and may perform unstable operation. In a system where the power source voltage drops slowly when the power source voltage drops or the power supply is turned off, reset a microcomputer when the power source voltage is less than the recommended operating conditions and design a system not to cause errors to the system by this unstable operation. Electric Characteristic Differences Between Flash Memory, Mask ROM and QzROM Version MCUs There are differences in the manufacturing processes and the mask pattern among flash memory, mask ROM, and QzROM version MCUs due to the differences of the ROM type. Even when the ROM type is the same, when the memory size is different, the manufacturing processes and the mask pattern differ. For these reasons, the oscillation circuit constants and the characteristics such as a characteristic value, operation margin, noise immunity, and noise radiation within the limits of electrical characteristics may differ. When manufacturing an application system, please perform sufficient evaluations in each product. Especially, when switching a product (example: change from the mask ROM version to QzROM version), please perform sufficient evaluations by the switching product in the stage before massproducing an application system. Product Shipped in Blank As for the product shipped in blank, Renesas does not perform the writing test to user ROM area after the assembly process though the QzROM writing test is performed enough before the assembly process. Therefore, a writing error of approx.0.1 % may occur. Moreover, please note the contact of cables and foreign bodies on a socket, etc. because a writing environment may cause some writing errors. QzROM Version Connect the CNVSS /VPP pin the shortest possible to the GND pattern which is supplied to the VSS pin of the microcomputer. In addition connecting an approximately 5 k resistor in series to the GND could improve noise immunity. In this case as well as the above mention, connect the pin the shortest possible to the GND pattern which is supplied to the V S S pin of the microcomputer. * Reason The CNVSS/VPP pin is the power source input pin for the built-in QzROM. When programming in the QzROM, the impedance of the VPP pin is low to allow the electric current for writing to flow into the built-in QzROM. Because of this, noise can enter easily. If noise enters the VPP pin, abnormal instruction codes or data are read from the QzROM, which may cause a program runaway. Rev.1.10 Nov 14, 2005 REJ03B0166-0110 Page 69 of 91 CNVSS/VPP Approx. 5k VSS (Note) The shortest Note. Shows the microcomputer's pin. Fig 63. Wiring for the CNVSS/VPP Notes On QzROM Writing Orders When ordering the QzROM product shipped after writing, submit the mask file (extension: .msk) which is made by the mask file converter MM. Be sure to set the ROM option ("MASK option" written in the mask file converter) setup when making the mask file by using the mask file converter MM. Notes On ROM Code Protect (QzROM product shipped after writing) As for the QzROM product shipped after writing, the ROM code protect is specified according to the ROM option setup data in the mask file which is submitted at ordering. Renesas Technology corp. uses the ROM option setup data at the ROM code protect address (address FFDB16) when writing to the QzROM. Consequently, the actual written value might differ from the ordered value as the contents of the ROM code protect address. The ROM option setup data in the mask file is "0016" for protect enabled, "FE16" (protect enabled to the protect area 1 only) or "FF16" for protect disabled. Therefore, the contents of the ROM code protect address of the QzROM product shipped after writing are "0016", "FE16" or "FF16". Note that the mask file which has nothing at the ROM option data or has the data other than "0016", "FE16" and "FF16" can not be accepted. DATA REQUIRED FOR QzROM WRITING ORDERS The following are necessary when ordering a QzROM product shipped after writing: 1. QzROM Writing Confirmation Form* 2. Mark Specification Form* 3. ROM data...........Mask file * For the QzROM writing confirmation form and the mark specification form, refer to the "Renesas Technology Corp." Homepage (http://www.renesas.com/homepage.jsp). Note that we cannot deal with special font marking (customer's trademark etc.) in QzROM microcomputer. PRELIMINARY Notice: This is not a final specification. Some parametric limits are subject to change. 3803 Group (Spec.H QzROM version) ELECTRICAL CHARACTERISTICS Absolute maximum ratings Table 10 Absolute maximum ratings Symbol VCC VI VI VI Parameter Power source voltages Input voltage P00-P07, P10-P17, P20-P27, P30, P31, P34-P37, P40-P47, P50-P57, P60-P67, VREF Input voltage P32, P33 Input voltage RESET, XIN VI VO Input voltage Output voltage VO Pd Output voltage Power dissipation Topr Tstg Operating temperature Storage temperature Page 70 of 91 -0.3 to VCC + 0.3 -0.3 to 5.8 -0.3 to VCC + 0.3 -0.3 to VCC + 0.3 -0.3 to 5.8 Ta=25 C 1. This value is 300 mW except SP package. Ratings -0.3 to 6.5 -0.3 to VCC + 0.3 CNVSS P00-P07, P10-P17, P20-P27, P30, P31, P34-P37, P40-P47, P50-P57, P60-P67, XOUT P32, P33 NOTES: Rev.1.10 Nov 14, 2005 REJ03B0166-0110 Conditions All voltages are based on VSS. When an input voltage is measured, output transistors are cut off. 1000(1) -20 to 85 -65 to 125 Unit V V V V V V V mW C C PRELIMINARY Notice: This is not a final specification. Some parametric limits are subject to change. 3803 Group (Spec.H QzROM version) Recommended operating conditions Table 11 Symbol VCC Recommended operating conditions (1) (VCC = 1.8 to 5.5 V, VSS = 0 V, Ta = -20 to 85 C, unless otherwise noted) Parameter Conditions Power source voltage(1) When start oscillating(2) f(XIN) 2.1 MHz High-speed mode f() = f(XIN)/2 f(XIN) 4.2 MHz Middle-speed mode f() = f(XIN)/8 VSS VIH VIH VIH VIL VIL VIL f(XIN) Power source voltage "H" input voltage P00-P07, P10-P17, P20-P27, P30, P31, P34-P37, P40-P47, P50-P57, P60-P67 "H" input voltage P32, P33 "H" input voltage RESET, XIN, XCIN, CNVSS "L" input voltage P00-P07, P10-P17, P20-P27, P30-P37, P40-P47, P50-P57, P60-P67 "L" input voltage RESET, CNVSS "L" input voltage XIN, XCIN Main clock input oscillation frequency(3) f(XIN) 8.4 MHz f(XIN) 12.5 MHz f(XIN) 16.8 MHz f(XIN) 6.3 MHz f(XIN) 8.4 MHz f(XIN) 12.5 MHz f(XIN) 16.8 MHz Limits Min. 2.2 Typ. 5.0 Max. 5.5 2.0 2.2 2.7 4.0 4.5 1.8 2.2 2.7 4.5 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 0 5.5 5.5 5.5 5.5 5.5 5.5 5.5 5.5 5.5 V V V V V 1.8 VCC < 2.7 V 0.85 VCC VCC 2.7 VCC 5.5 V 0.8 VCC VCC 1.8 VCC < 2.7 V 2.7 VCC 5.5 V 1.8 VCC < 2.7 V 2.7 VCC 5.5 V 0.85 VCC 0.8 VCC 0.85 VCC 0.8 VCC 5.5 5.5 VCC VCC V 1.8 VCC < 2.7 V 0 0.16 VCC V 2.7 VCC 5.5 V 0 0.2 VCC 1.8 VCC < 2.7 V 2.7 VCC 5.5 V 1.8 VCC 5.5 V 0 0 0 0.16 VCC 0.2 VCC 0.16 VCC V 2.0 VCC < 2.2 V ( 20 x V CC - 36 ) x 1.05 ----------------------------------------------------------2 MHz 2.2 VCC < 2.7 V ( 24 x V CC - 40.8 ) x 1.05 ---------------------------------------------------------------3 MHz 2.7 VCC < 4.0 V ( 9 x V CC - 0.3 ) x 1.05 ---------------------------------------------------------3 MHz 4.0 VCC < 4.5 V ( 24 x V CC - 60 ) x 1.05 ----------------------------------------------------------3 MHz 16.8 MHz MHz High-speed mode f() = f(XIN)/2 Middle-speed mode f() = f(XIN)/8 4.5 VCC 5.5 V 1.8 VCC < 2.2 V ( 15 x V CC - 9 ) x 1.05 -------------------------------------------------------3 Sub-clock input oscillation frequency(3, 4) V V 2.2 VCC < 2.7 V ( 24 x V CC - 28.8 ) x 1.05 ---------------------------------------------------------------3 MHz 2.7 VCC < 4.5 V ( 15 x V CC + 39 ) x 1.1 -------------------------------------------------------7 16.8 MHz 4.5 VCC 5.5 V f(XCIN) Unit 32.768 50 MHz kHz NOTES: 1. When using A/D converter, see A/D converter recommended operating conditions. 2. The start voltage and the start time for oscillation depend on the using oscillator, oscillation circuit constant value and operating temperature range, etc.. Particularly a high-frequency oscillator might require some notes in the low voltage operation. 3. When the oscillation frequency has a duty cycle of 50%. 4. When using the microcomputer in low-speed mode, set the sub-clock input oscillation frequency on condition that f(XCIN) < f(XIN)/3. Rev.1.10 Nov 14, 2005 REJ03B0166-0110 Page 71 of 91 PRELIMINARY Notice: This is not a final specification. Some parametric limits are subject to change. 3803 Group (Spec.H QzROM version) Table 12 Recommended operating conditions (2) (VCC = 1.8 to 5.5 V, VSS = 0V, Ta = -20 to 85 C, unless otherwise noted) Symbol Parameter Limits Typ. Unit IOH(peak) "H" total peak output current(1) P00-P07, P10-P17, P20-P27, P30, P31, P34-P37 Max. -80 IOH(peak) "H" total peak output current(1) P40-P47, P50-P57, P60-P67 -80 mA IOL(peak) "L" total peak output current(1) P00-P07, P10-P17, P30-P37 80 mA IOL(peak) "L" total peak output current(1) P20-P27 80 mA IOL(peak) "L" total peak output current(1) P40-P47, P50-P57, P60-P67 80 mA IOH(avg) "H" total average output current(1) P00-P07, P10-P17, P20-P27, P30, P31, P34-P37 -40 mA IOH(avg) "H" total average output current(1) P40-P47, P50-P57, P60-P67 -40 mA IOL(avg) "L" total average output current(1) P00-P07, P10-P17, P30-P37 40 mA IOL(avg) "L" total average output current(1) P20-P27 40 mA IOL(avg) "L" total average output current(1) P40-P47, P50-P57, P60-P67 40 mA IOH(peak) "H" peak output current(2) -10 mA IOL(peak) "L" peak output current(2) 10 mA IOL(peak) "L" peak output current(2) P00-P07, P10-P17, P20-P27, P30, P31, P34-P37, P40-P47, P50-P57, P60-P67 P00-P07, P10-P17, P30-P37, P40-P47, P50-P57, P60-P67 P20-P27 20 mA P00-P07, P10-P17, P20-P27, P30, P31, P34-P37, P40-P47, P50-P57, P60-P67 P00-P07, P10-P17, P30-P37, P40-P47, P50-P57, P60-P67 P20-P27 -5 mA 5 mA 10 mA IOH(avg) "H" average output IOL(avg) "L" average output current(3) IOL(avg) "L" average output current(3) current(3) Min. mA NOTES: 1. The total output current is the sum of all the currents flowing through all the applicable ports. The total average current is an average value measured over 100 ms. The total peak current is the peak value of all the currents. 2. The peak output current is the peak current flowing in each port. 3. The average output current IOL(avg), IOH(avg) are average value measured over 100 ms. Rev.1.10 Nov 14, 2005 REJ03B0166-0110 Page 72 of 91 PRELIMINARY Notice: This is not a final specification. Some parametric limits are subject to change. 3803 Group (Spec.H QzROM version) Electrical characteristics Table 13 Electrical characteristics (1) (VCC = 1.8 to 5.5 V, VSS = 0V, Ta = -20 to 85 C, unless otherwise noted) Symbol VOH VOL VOL VT+ - VT- VT+ - VT- VT+ - VT- IIH IIH IIH IIL IIL IIL IIL VRAM Parameter "H" output voltage(1) P00-P07, P10-P17, P20-P27, P30, P31, P34-P37, P40-P47, P50-P57, P60-P67 "L" output voltage P00-P07, P10-P17, P20-P27, P30-P37, P40-P47, P50-P57, P60-P67 "L" output voltage P20-P27 Hysteresis CNTR0, CNTR1, CNTR2, INT0-INT4 Hysteresis RxD1, SCLK1, SIN2, SCLK2, RxD3, SCLK3 Hysteresis RESET "H" input current P00-P07, P10-P17, P20-P27, P30-P37, P40-P47, P50-P57, P60-P67 "H" input current RESET, CNVSS "H" input current XIN "L" input current P00-P07, P10-P17, P20-P27, P30-P37, P40-P47, P50-P57, P60-P67 "L" input current RESET, CNVSS "L" input current XIN "L" input current (at Pull-up) P00-P07, P10-P17, P20-P27, P30, P31, P34-P37, P40-P47, P50-P57, P60-P67 RAM hold voltage Test conditions IOH = -10 mA VCC = 4.0 to 5.5 V IOH = -1.0 mA VCC = 1.8 to 5.5 V IOL = 10 mA VCC = 4.0 to 5.5 V IOL = 1.6 mA VCC = 1.8 to 5.5 V IOL = 20 mA VCC = 4.0 to 5.5 V IOL = 1.6 mA VCC = 1.8 to 5.5 V Min. VCC - 2.0 Limits Typ. Unit V VCC - 1.0 2.0 V 1.0 2.0 V 0.4 0.4 V 0.5 V 0.5 V VI = VCC (Pin floating, Pull-up transistor "off") VI = VCC VI = VCC 5.0 A 5.0 A A 4.0 VI = VCC (Pin floating, Pull-up transistor "off") VI = VSS -5.0 A -5.0 A -4.0 VI = VSS VI = VSS VCC = 5.0 V VI = VSS VCC = 3.0 V When clock stopped Max. A -80 -210 -420 -30 -70 -140 1.8 VCC A V NOTES: 1. P35 is measured when the P35/TXD3 P-channel output disable bit of the UART3 control register (bit 4 of address 003316) is "0". P45 is measured when the P45/TXD1 P-channel output disable bit of the UART1 control register (bit 4 of address 001B16) is "0". Rev.1.10 Nov 14, 2005 REJ03B0166-0110 Page 73 of 91 PRELIMINARY Notice: This is not a final specification. Some parametric limits are subject to change. 3803 Group (Spec.H QzROM version) Table 14 Electrical characteristics (2) (VCC = 1.8 to 5.5 V, Ta = -20 to 85 C, f(XCIN)=32.768kHz (Stopped in middle-speed mode), Output transistors "off", AD converter not operated) Symbol ICC Parameter Test conditions Power source High-speed current mode VCC = 5.0 V VCC = 3.0 V Middle-speed mode VCC = 5.0 V VCC = 3.0 V Low-speed mode VCC = 5.0 V VCC = 3.0 V VCC = 2.0 V In STP state (All oscillation stopped) Increment when A/D conversion is executed Rev.1.10 Nov 14, 2005 REJ03B0166-0110 Page 74 of 91 f(XIN) = 16.8 MHz f(XIN) = 12.5 MHz f(XIN) = 8.4 MHz f(XIN) = 4.2 MHz f(XIN) = 16.8 MHz (in WIT state) f(XIN) = 8.4 MHz f(XIN) = 4.2 MHz f(XIN) = 2.1 MHz f(XIN) = 16.8 MHz f(XIN) = 12.5 MHz f(XIN) = 8.4 MHz f(XIN) = 16.8 MHz (in WIT state) f(XIN) = 12.5 MHz f(XIN) = 8.4 MHz f(XIN) = 6.3 MHz f(XIN) = stopped In WIT state f(XIN) = stopped In WIT state f(XIN) = stopped In WIT state Ta = 25 C Ta = 85 C f(XIN) = 16.8 MHz, VCC = 5.0 V In Middle-, high-speed mode Min. Limits Typ. 8.0 6.5 5.0 2.5 2.0 1.9 1.0 0.6 4.0 3.0 2.5 1.8 1.5 1.2 1.0 55 40 15 8 6 3 0.1 500 Max. 15.0 12.0 9.0 5.0 3.6 3.8 2.0 1.2 7.0 6.0 5.0 3.3 3.0 2.4 2.0 200 70 40 15 15 6 1.0 10 Unit mA mA mA mA A A A A A PRELIMINARY Notice: This is not a final specification. Some parametric limits are subject to change. 3803 Group (Spec.H QzROM version) A/D converter characteristics Table 15 A/D converter recommended operating conditions (VCC = 2.0 to 5.5 V, VSS = AVSS = 0 V, Ta = -20 to 85 C, unless otherwise noted) Symbol Parameter Power source voltage (When A/D converter is used) VCC VREF AVSS VIA f(XIN) Limits Conditions 8-bit A/D mode(1) 10-bit A/D Analog convert reference voltage Analog power source voltage Analog input voltage AN0-AN15 Main clock input oscillation frequency (When A/D converter is used) Min. 2.0 Typ. 5.0 Max. 5.5 2.2 5.0 5.5 mode(2) 2.0 Unit V VCC V V V MHz 0 2.0 VCC < 2.2 V 0 0.5 VCC 2.2 VCC < 2.7 V 0.5 ( 24 x V CC - 40.8 ) x 1.05 ---------------------------------------------------------------3 2.7 VCC < 4.0 V 0.5 ( 9 x V CC - 0.3 ) x 1.05 ---------------------------------------------------------3 4.0 VCC < 4.5 V 0.5 ( 24.6 x V C C - 62.7 ) x 1.05 --------------------------------------------------------------------3 4.5 VCC 5.5 V 0.5 16.8 ( 20 x V CC - 36 ) x 1.05 ----------------------------------------------------------2 NOTES: 1. 8-bit A/D mode: When the conversion mode selection bit (bit 7 of address 003816) is "1". 2. 10-bit A/D mode: When the conversion mode selection bit (bit 7 of address 003816) is "0". Table 16 A/D converter characteristics (VCC = 2.0 to 5.5 V, VSS = AVSS = 0 V, Ta = -20 to 85 C, unless otherwise noted) Symbol - Parameter Test conditions Resolution - Absolute accuracy (excluding quantization error) 8-bit A/D mode(1) 10-bit A/D mode(2) 10 10-bit A/D mode(2) Conversion time tCONV Limits Typ. Max. 8 8-bit A/D mode(1) Min. 2.0 VREF < 2.2 V 2.2 VREF 5.5 V 2.2 VREF < 2.7 V 2.7 VREF 5.5 V 3 2 5 4 50 8-bit A/D mode(1) II(AD) bit LSB LSB 2tc(XIN) 61 mode(2) RLADDER IVREF Unit 10-bit A/D Ladder resistor Reference power at A/D converter operated VREF = 5.0 V source input current at A/D converter stopped VREF = 5.0 V A/D port input current 12 50 35 150 k A A A 100 200 5.0 5.0 NOTES: 1. 8-bit A/D mode: When the conversion mode selection bit (bit 7 of address 003816) is "1". 2. 10-bit A/D mode: When the conversion mode selection bit (bit 7 of address 003816) is "0". D/A converter characteristics Table 17 D/A converter characteristics (VCC = 2.7 to 5.5 V, VREF = 2.7 V to VCC, VSS = AVSS = 0 V, Ta = -20 to 85 C, unless otherwise noted) Symbol - - tsu RO IVREF Parameter Resolution Absolute accuracy Min. Limits Typ. 4.0 VREF 5.5 V 2.7 VREF < 4.0 V Setting time Output resistor 2 Reference power source input current(1) 3.5 Max. 8 1.0 2.5 3 5 3.2 NOTES: 1. Using one D/A converter, with the value in the DA conversion register of the other D/A converter being "0016". Rev.1.10 Nov 14, 2005 REJ03B0166-0110 Page 75 of 91 Unit bit % s k mA PRELIMINARY Notice: This is not a final specification. Some parametric limits are subject to change. 3803 Group (Spec.H QzROM version) Timing requirements and switching characteristics Table 18 Timing requirements (1) (VCC = 2.0 to 5.5 V, VSS = 0V, Ta = -20 to 85 C, unless otherwise noted) Symbol tW(RESET) tC(XIN) Parameter Reset input "L" pulse width Main clock XIN input cycle time 4.5 VCC 5.5 V 4.0 VCC < 4.5 V 2.7 VCC < 4.0 V tWH(XIN) Main clock XIN input "H" pulse width tWL(XIN) Main clock XIN input "L" pulse width tC(XCIN) tWH(XCIN) tWL(XCIN) tC(CNTR) Sub-clock XCIN input cycle time Sub-clock XCIN input "H" pulse width Sub-clock XCIN input "L" pulse width CNTR0-CNTR2 input cycle time tWH(CNTR) CNTR0-CNTR2 input "H" pulse width tWL(CNTR) CNTR0-CNTR2 input "L" pulse width tWH(INT) INT00, INT01, INT1, INT2, INT3, INT40, INT41 input "H" pulse width tWL(INT) INT00, INT01, INT1, INT2, INT3, INT40, INT41 input "L" pulse width Rev.1.10 Nov 14, 2005 REJ03B0166-0110 Page 76 of 91 2.2 VCC < 2.7 V 2.0 VCC < 2.2 V 4.5 VCC 5.5 V 4.0 VCC < 4.5 V 2.7 VCC < 4.0 V 2.2 VCC < 2.7 V 2.0 VCC < 2.2 V 4.5 VCC 5.5 V 4.0 VCC < 4.5 V 2.7 VCC < 4.0 V 2.2 VCC < 2.7 V 2.0 VCC < 2.2 V 4.5 VCC 5.5 V 4.0 VCC < 4.5 V 2.7 VCC < 4.0 V 2.2 VCC < 2.7 V 2.0 VCC < 2.2 V 4.5 VCC 5.5 V 4.0 VCC < 4.5 V 2.7 VCC < 4.0 V 2.2 VCC < 2.7 V 2.0 VCC < 2.2 V 4.5 VCC 5.5 V 4.0 VCC < 4.5 V 2.7 VCC < 4.0 V 2.2 VCC < 2.7 V 2.0 VCC < 2.2 V 4.5 VCC 5.5 V 4.0 VCC < 4.5 V 2.7 VCC < 4.0 V 2.2 VCC < 2.7 V 2.0 VCC < 2.2 V 4.5 VCC 5.5 V 4.0 VCC < 4.5 V 2.7 VCC < 4.0 V 2.2 VCC < 2.7 V 2.0 VCC < 2.2 V Limits Min. 16 59.5 10000/(86 VCC - 219) 26 x 103/(82 VCC - 3) 10000/(84 VCC - 143) 10000/(105 VCC - 189) 25 4000/(86 VCC - 219) 10000/(82 VCC - 3) 4000/(84 VCC - 143) 4000/(105 VCC - 189) 25 4000/(86 VCC - 219) 10000/(82 VCC - 3) 4000/(84 VCC - 143) 4000/(105 VCC - 189) 20 5 5 120 160 250 500 1000 48 64 115 230 460 48 64 115 230 460 48 64 115 230 460 48 64 115 230 460 Typ. Max. Unit XIN cycle ns ns ns s s s ns ns ns ns ns PRELIMINARY Notice: This is not a final specification. Some parametric limits are subject to change. 3803 Group (Spec.H QzROM version) Table 19 Timing requirements (2) (VCC = 2.0 to 5.5 V, VSS = 0V, Ta = -20 to 85 C, unless otherwise noted) Symbol Parameter tC(SCLK1) tC(SCLK3) Serial I/O1, serial I/O3 clock input cycle time(1) tWH(SCLK1) tWH(SCLK3) Serial I/O1, serial I/O3 clock input "H" pulse width(1) tWL(SCLK1) tWL(SCLK3) Serial I/O1, serial I/O3 clock input "L" pulse width(1) tsu(RxD1-SCLK1) tsu(RxD3-SCLK3) Serial I/O1, serial I/O3 clock input setup time th(SCLK1-RxD1) th(SCLK3-RxD3) Serial I/O1, serial I/O3 clock input hold time tC(SCLK2) Serial I/O2 clock input cycle time tWH(SCLK2) Serial I/O2 clock input "H" pulse width tWL(SCLK2) Serial I/O2 clock input "L" pulse width tsu(SIN2-SCLK2) Serial I/O2 clock input setup time th(SCLK2-SIN2) Serial I/O2 clock input hold time 4.5 VCC 5.5 V 4.0 VCC < 4.5 V 2.7 VCC < 4.0 V 2.2 VCC < 2.7 V 2.0 VCC < 2.2 V 4.5 VCC 5.5 V 4.0 VCC < 4.5 V 2.7 VCC < 4.0 V Min. 250 320 500 1000 2000 120 150 240 2.2 VCC < 2.7 V 2.0 VCC < 2.2 V 4.5 VCC 5.5 V 4.0 VCC < 4.5 V 2.7 VCC < 4.0 V 2.2 VCC < 2.7 V 2.0 VCC < 2.2 V 4.5 VCC 5.5 V 4.0 VCC < 4.5 V 2.7 VCC < 4.0 V 2.2 VCC < 2.7 V 2.0 VCC < 2.2 V 4.5 VCC 5.5 V 4.0 VCC < 4.5 V 2.7 VCC < 4.0 V 2.2 VCC < 2.7 V 2.0 VCC < 2.2 V 4.5 VCC 5.5 V 4.0 VCC < 4.5 V 2.7 VCC < 4.0 V 2.2 VCC < 2.7 V 2.0 VCC < 2.2 V 4.5 VCC 5.5 V 4.0 VCC < 4.5 V 2.7 VCC < 4.0 V 2.2 VCC < 2.7 V 2.0 VCC < 2.2 V 4.5 VCC 5.5 V 4.0 VCC < 4.5 V 2.7 VCC < 4.0 V 2.2 VCC < 2.7 V 2.0 VCC < 2.2 V 4.5 VCC 5.5 V 4.0 VCC < 4.5 V 2.7 VCC < 4.0 V 2.2 VCC < 2.7 V 2.0 VCC < 2.2 V 4.5 VCC 5.5 V 4.0 VCC < 4.5 V 2.7 VCC < 4.0 V 2.2 VCC < 2.7 V 2.0 VCC < 2.2 V 480 950 120 150 240 480 950 70 90 100 200 400 32 40 50 100 200 500 650 1000 2000 4000 200 260 400 950 2000 200 260 400 950 2000 100 130 200 400 800 100 130 150 300 600 NOTES: 1. When bit 6 of address 001A16 and bit 6 of address 003216 are "1" (clock synchronous). Divide this value by four when bit 6 of address 001A16 and bit 6 of address 003216 are "0" (UART). Rev.1.10 Nov 14, 2005 REJ03B0166-0110 Page 77 of 91 Limits Typ. Max. Unit ns ns ns ns ns ns ns ns ns ns PRELIMINARY Notice: This is not a final specification. Some parametric limits are subject to change. 3803 Group (Spec.H QzROM version) Table 20 Switching characteristics (1) (VCC = 2.0 to 5.5 V, VSS = 0V, Ta = -20 to 85 C, unless otherwise noted) Symbol Parameter tWH(SCLK1) tWH(SCLK3) Serial I/O1, serial I/O3 clock output "H" pulse width tWL(SCLK1) tWL(SCLK3) Serial I/O1, serial I/O3 clock output "L" pulse width td(SCLK1-TxD1) td(SCLK3-TxD3) Serial I/O1, serial I/O3 output delay time(1) tV(SCLK1-TxD1) tV(SCLK3-TxD3) Serial I/O1, serial I/O3 output valid time(1) tr(SCLK1) tr(SCLK3) Serial I/O1, serial I/O3 rise time of clock output tf(SCLK1) tf(SCLK3) Serial I/O1, serial I/O3 fall time of clock output tWH(SCLK2) Serial I/O2 clock output "H" pulse width tWL(SCLK2) Serial I/O2 clock output "L" pulse width td(SCLK2-SOUT2) Serial I/O2 output delay time tV(SCLK2-SOUT2) Serial I/O2 output valid time 4.5 VCC 5.5 V 4.0 VCC < 4.5 V 2.7 VCC < 4.0 V 2.2 VCC < 2.7 V 2.0 VCC < 2.2 V 4.5 VCC 5.5 V 4.0 VCC < 4.5 V 2.7 VCC < 4.0 V 2.2 VCC < 2.7 V 2.0 VCC < 2.2 V 4.5 VCC 5.5 V 4.0 VCC < 4.5 V 2.7 VCC < 4.0 V 2.2 VCC < 2.7 V 2.0 VCC < 2.2 V 4.5 VCC 5.5 V 4.0 VCC < 4.5 V 2.7 VCC < 4.0 V 2.2 VCC < 2.7 V 2.0 VCC < 2.2 V 4.5 VCC 5.5 V 4.0 VCC < 4.5 V 2.7 VCC < 4.0 V 2.2 VCC < 2.7 V 2.0 VCC < 2.2 V 4.5 VCC 5.5 V 4.0 VCC < 4.5 V 2.7 VCC < 4.0 V 2.2 VCC < 2.7 V 2.0 VCC < 2.2 V 4.5 VCC 5.5 V 4.0 VCC < 4.5 V 2.7 VCC < 4.0 V 2.2 VCC < 2.7 V 2.0 VCC < 2.2 V 4.5 VCC 5.5 V 4.0 VCC < 4.5 V 2.7 VCC < 4.0 V 2.2 VCC < 2.7 V 2.0 VCC < 2.2 V 4.5 VCC 5.5 V 4.0 VCC < 4.5 V 2.7 VCC < 4.0 V 2.2 VCC < 2.7 V 2.0 VCC < 2.2 V 4.5 VCC 5.5 V 4.0 VCC < 4.5 V 2.7 VCC < 4.0 V 2.2 VCC < 2.7 V 2.0 VCC < 2.2 V Test conditions Limits Min. tC(SCLK1)/2-30, tC(SCLK3)/2-30 tC(SCLK1)/2-35, tC(SCLK3)/2-35 tC(SCLK1)/2-40, tC(SCLK3)/2-40 tC(SCLK1)/2-45, tC(SCLK3)/2-45 tC(SCLK1)/2-50, tC(SCLK3)/2-50 tC(SCLK1)/2-30, tC(SCLK3)/2-30 tC(SCLK1)/2-35, tC(SCLK3)/2-35 tC(SCLK1)/2-40, tC(SCLK3)/2-40 tC(SCLK1)/2-45, tC(SCLK3)/2-45 tC(SCLK1)/2-50, tC(SCLK3)/2-50 Typ. ns 140 200 350 400 420 -30 ns ns -30 -30 -30 -30 30 35 40 45 50 30 35 40 45 50 Fig.64 tC(SCLK2)/2-160 tC(SCLK2)/2-200 tC(SCLK2)/2-240 tC(SCLK2)/2-260 tC(SCLK2)/2-280 tC(SCLK2)/2-160 tC(SCLK2)/2-200 tC(SCLK2)/2-240 tC(SCLK2)/2-260 tC(SCLK2)/2-280 ns ns ns ns 200 250 300 350 400 0 0 0 0 0 1. When the P45/TXD1 P-channel output disable bit of the UART1 control register (bit 4 of address 001B16) is "0". Page 78 of 91 Unit ns NOTES: Rev.1.10 Nov 14, 2005 REJ03B0166-0110 Max. ns ns PRELIMINARY Notice: This is not a final specification. Some parametric limits are subject to change. 3803 Group (Spec.H QzROM version) Table 21 Switching characteristics (2) (VCC = 2.0 to 5.5 V, VSS = 0V, Ta = -20 to 85 C, unless otherwise noted) Symbol Parameter tf(SCLK2) Serial I/O2 fall time of clock output tr(CMOS) CMOS rise time of output(1) tf(CMOS) CMOS fall time of output(1) 4.5 VCC 5.5 V 4.0 VCC < 4.5 V 2.7 VCC < 4.0 V 2.2 VCC < 2.7 V 2.0 VCC < 2.2 V 4.5 VCC 5.5 V 4.0 VCC < 4.5 V 2.7 VCC < 4.0 V 2.2 VCC < 2.7 V 2.0 VCC < 2.2 V 4.5 VCC 5.5 V 4.0 VCC < 4.5 V 2.7 VCC < 4.0 V 2.2 VCC < 2.7 V 2.0 VCC < 2.2 V Test conditions Fig.64 Limits Min. Typ. 10 12 15 17 20 10 12 15 17 20 NOTES: 1. When the P35/TXD3 P4-channel output disable bit of the UART3 control register (bit 4 of address 003316) is "0". Rev.1.10 Nov 14, 2005 REJ03B0166-0110 Page 79 of 91 Max. 30 35 40 45 50 30 35 40 45 50 30 35 40 45 50 Unit ns ns ns PRELIMINARY Notice: This is not a final specification. Some parametric limits are subject to change. 3803 Group (Spec.H QzROM version) Measurement output pin 1k 100pF Measurement output pin 100pF CMOS output N-channel open-drain output Fig 64. Circuit for measuring output switching characteristics (1) Rev.1.10 Nov 14, 2005 REJ03B0166-0110 Page 80 of 91 Fig 65. Circuit for measuring output switching characteristics (2) PRELIMINARY Notice: This is not a final specification. Some parametric limits are subject to change. 3803 Group (Spec.H QzROM version) Single-chip mode timing diagram tC(CNTR) tWL(CNTR) tWH(CNTR) CNTR0, CNTR1 CNTR2 INT1, INT2, INT3 INT00, INT40 INT01, INT41 0.8VCC 0.2VCC tWH(INT) tWL(INT) 0.8VCC 0.2VCC tW(RESET) RESET 0.8VCC 0.2VCC tC(XIN) tWL(XIN) tWH(XIN) XIN 0.8VCC 0.2VCC tC(XCIN) tWL(XCIN) tWH(XCIN) XCIN 0.8VCC 0.2VCC tC(SCLK1), tC(SCLK2), tC(SCLK3) SCLK1 SCLK2 SCLK3 tf tWL(SCLK1), tWL(SCLK2), tWL(SCLK3) tr tWH(SCLK1), tWH(SCLK2), tWH(SCLK3) 0.8VCC 0.2VCC tsu(RXD1-SCLK1), tsu(SIN2-SCLK2), tsu(RXD3-SCLK3) RXD1 RXD3 SIN2 th(SCLK1-RXD1), th(SCLK2-SIN2), th(SCLK3-RXD3) 0.8VCC 0.2VCC td(SCLK1-TXD1), td(SCLK2-SOUT2), td(SCLK3-TXD3) TXD1 TXD3 SOUT2 Fig 66. Timing diagram (in single-chip mode) Rev.1.10 Nov 14, 2005 REJ03B0166-0110 Page 81 of 91 tv(SCLK1-TXD1), tv(SCLK2-SOUT2), tv(SCLK3-TXD3) PRELIMINARY Notice: This is not a final specification. Some parametric limits are subject to change. 3803 Group (Spec.H QzROM version) PACKAGE OUTLINE RENESAS Code PRDP0064BA-A Previous Code 64P4B MASS[Typ.] 7.9g 33 1 32 *1 E 64 e1 JEITA Package Code P-SDIP64-17x56.4-1.78 c D A A2 *2 NOTE) 1. DIMENSIONS "*1" AND "*2" DO NOT INCLUDE MOLD FLASH. 2. DIMENSION "*3" DOES NOT INCLUDE TRIM OFFSET. A1 L Reference Symbol SEATING PLANE *3 e bp b3 *3 e1 D E A A1 A2 bp b2 b3 c b2 e L JEITA Package Code P-LQFP64-10x10-0.50 RENESAS Code PLQP0064KB-A Previous Code 64P6Q-A / FP-64K / FP-64KV Dimension in Millimeters Min 18.75 56.2 16.85 Nom 19.05 56.4 17.0 Max 19.35 56.6 17.15 5.08 0.38 0.4 0.65 0.9 0.2 0 1.528 2.8 3.8 0.5 0.6 0.75 1.05 1.0 1.3 0.25 0.32 15 1.778 2.028 MASS[Typ.] 0.3g HD *1 D 48 33 49 NOTE) 1. DIMENSIONS "*1" AND "*2" DO NOT INCLUDE MOLD FLASH. 2. DIMENSION "*3" DOES NOT INCLUDE TRIM OFFSET. 32 bp 64 1 c1 Terminal cross section ZE 17 Reference Symbol c E *2 HE b1 16 Index mark ZD c A bp L x L1 Detail F Rev.1.10 Nov 14, 2005 REJ03B0166-0110 Min 9.9 9.9 Nom 10.0 10.0 1.4 11.8 12.0 11.8 12.0 0.05 0.15 0.09 0 *3 A1 y e A2 F D E A2 HD HE A A1 bp b1 c c1 Dimension in Millimeters Page 82 of 91 e x y ZD ZE L L1 0.35 Max 10.1 10.1 12.2 12.2 1.7 0.1 0.15 0.20 0.25 0.18 0.145 0.20 0.125 8 0.5 0.08 0.08 1.25 1.25 0.5 0.65 1.0 PRELIMINARY Notice: This is not a final specification. Some parametric limits are subject to change. 3803 Group (Spec.H QzROM version) JEITA Package Code P-LQFP64-14x14-0.80 RENESAS Code PLQP0064GA-A Previous Code 64P6U-A MASS[Typ.] 0.7g HD *1 D 33 48 49 NOTE) 1. DIMENSIONS "*1" AND "*2" DO NOT INCLUDE MOLD FLASH. 2. DIMENSION "*3" DOES NOT INCLUDE TRIM OFFSET. 32 bp c Reference Symbol *2 E HE c1 b1 ZE Terminal cross section 64 17 c Index mark A2 16 ZD A 1 A1 F L D E A2 HD HE A A1 bp b1 c c1 L1 y e Rev.1.10 Nov 14, 2005 REJ03B0166-0110 *3 Detail F bp x Page 83 of 91 e x y ZD ZE L L1 Dimension in Millimeters Min Nom Max 13.9 14.0 14.1 13.9 14.0 14.1 1.4 15.8 16.0 16.2 15.8 16.0 16.2 1.7 0.1 0.2 0 0.32 0.37 0.42 0.35 0.09 0.145 0.20 0.125 0 8 0.8 0.20 0.10 1.0 1.0 0.3 0.5 0.7 1.0 PRELIMINARY Notice: This is not a final specification. Some parametric limits are subject to change. 3803 Group (Spec.H QzROM version) APPENDIX NOTES ON PROGRAMMING Set D flag to "1" 1. Processor Status Register (1) Initializing of processor status register Flags which affect program execution must be initialized after a reset. In particular, it is essential to initialize the T and D flags because they have an important effect on calculations. <Reason> After a reset, the contents of the processor status register (PS) are undefined except for the I flag which is "1". ADC or SBC instruction NOP instruction SEC, CLC, or CLD instruction Reset Fig 3. Initializing of flags Main program Fig 1. Initialization of processor status register (2) How to reference the processor status register To reference the contents of the processor status register (PS), execute the PHP instruction once then read the contents of (S+1). If necessary, execute the PLP instruction to return the PS to its original status. (S) (S) + 1 Fig 2. Stored PS Stack memory contents after PHP instruction execution 2. BRK instruction (1) Interrupt priority level When the BRK instruction is executed with the following conditions satisfied, the interrupt execution is started from the address of interrupt vector which has the highest priority. * Interrupt request bit and interrupt enable bit are set to "1". * Interrupt disable flag (I) is set to "1" to disable interrupt. 3. Decimal calculations (1) Execution of decimal calculations The ADC and SBC are the only instructions which will yield proper decimal notation, set the decimal mode flag (D) to "1" with the SED instruction. After executing the ADC or SBC instruction, execute another instruction before executing the SEC, CLC, or CLD instruction. (2) Notes on status flag in decimal mode When decimal mode is selected, the values of three of the flags in the status register (the N, V, and Z flags) are invalid after a ADC or SBC instruction is executed. The carry flag (C) is set to "1" if a carry is generated as a result of the calculation, or is cleared to "0" if a borrow is generated. To determine whether a calculation has generated a carry, the C flag must be initialized to "0" before each calculation. To check for a borrow, the C flag must be initialized to "1" before each calculation. Rev.1.10 Nov 14, 2005 REJ03B0166-0110 Page 84 of 91 Execution of decimal calculations 4. JMP instruction When using the JMP instruction in indirect addressing mode, do not specify the last address on a page as an indirect address. 5. Multiplication and Division Instructions * The index X mode (T) and the decimal mode (D) flags do not affect the MUL and DIV instruction. * The execution of these instructions does not change the contents of the processor status register. 6. Ports The contents of the port direction registers cannot be read. The following cannot be used: * The data transfer instruction (LDA, etc.) * The operation instruction when the index X mode flag (T) is "1" * The instruction with the addressing mode which uses the value of a direction register as an index * The bit-test instruction (BBC or BBS, etc.) to a direction register * The read-modify-write instructions (ROR, CLB, or SEB, etc.) to a direction register. Use instructions such as LDM and STA, etc., to set the port direction registers. 7. Instruction Execution Timing The instruction execution time can be obtained by multiplying the frequency of the internal clock by the number of cycles mentioned in the 740 Family Software Manual. The frequency of the internal clock is the twice the XIN cycle in high-speed mode, 8 times the XIN cycle in middle-speed mode, and the twice the XCIN in low-speed mode. 8. Reserved Area, Reserved Bit Do not write any data to the reserved area in the SFR area and the special page. (Do not change the contents after reset.) 9. CPU Mode Register Be sure to fix bit 3 of the CPU mode register (address 003B16) to "1". PRELIMINARY 3803 Group (Spec.H QzROM version) NOTES ON PERIPHERAL FUNCTIONS Notes on Input and Output Ports 1. Notes in standby state In standby state*1 for low-power dissipation, do not make input levels of an I/O port "undefined". Even when an I/O port of Nchannel open-drain is set as output mode, if output data is "1", the aforementioned notes are necessary. Pull-up (connect the port to VCC) or pull-down (connect the port to VSS) these ports through a resistor. When determining a resistance value, note the following points: * External circuit * Variation of output levels during the ordinary operation When using built-in pull-up resistor, note on varied current values: * When setting as an input port : Fix its input level * When setting as an output port : Prevent current from flowing out to external <Reason> Exclusive input ports are always in a high-impedance state. An output transistor becomes an OFF state when an I/O port is set as input mode by the direction register, so that the port enter a highimpedance state. At this time, the potential which is input to the input buffer in a microcomputer is unstable in the state that input levels are "undefined". This may cause power source current. Even when an I/O port of N-channel open-drain is set as output mode by the direction register, if the contents of the port latch is "1", the same phenomenon as that of an input port will occur. NOTES: 1. Standby state : stop mode by executing STP instruction wait mode by executing WIT instruction 2. Modifying output data with bit managing instruction When the port latch of an I/O port is modified with the bit managing instruction*2, the value of the unspecified bit may be changed. <Reason> The bit managing instructions are read-modify-write form instructions for reading and writing data by a byte unit. Accordingly, when these instructions are executed on a bit of the port latch of an I/O port, the following is executed to all bits of the port latch. * As for bit which is set for input port: The pin state is read in the CPU, and is written to this bit after bit managing. * As for bit which is set for output port: The bit value is read in the CPU, and is written to this bit after bit managing. Note the following: * Even when a port which is set as an output port is changed for an input port, its port latch holds the output data. * As for a bit of which is set for an input port, its value may be changed even when not specified with a bit managing instruction in case where the pin state differs from its port latch contents. NOTES: 2. Bit managing instructions : SEB, and CLB instructions Rev.1.10 Nov 14, 2005 REJ03B0166-0110 Page 85 of 91 Notice: This is not a final specification. Some parametric limits are subject to change. Termination of Unused Pins 1. Terminate unused pins (1) Output ports : Open (2) I/O ports : * Set the I/O ports for the input mode and connect them to VCC or VSS through each resistor of 1 k to 10 k. Ports that permit the selecting of a built-in pull-up resistor can also use this resistor. Set the I/O ports for the output mode and open them at "L" or "H". * When opening them in the output mode, the input mode of the initial status remains until the mode of the ports is switched over to the output mode by the program after reset. Thus, the potential at these pins is undefined and the power source current may increase in the input mode. With regard to an effects on the system, thoroughly perform system evaluation on the user side. * Since the direction register setup may be changed because of a program runaway or noise, set direction registers by program periodically to increase the reliability of program. (3) The AVSS pin when not using the A/D converter : * When not using the A/D converter, handle a power source pin for the A/D converter, AVSS pin as follows: AVSS: Connect to the VSS pin. 2. Termination remarks (1) I/O ports : Do not open in the input mode. <Reason> * The power source current may increase depending on the firststage circuit. * An effect due to noise may be easily produced as compared with proper termination (2) in 1 and shown on the above. (2) I/O ports : When setting for the input mode, do not connect to VCC or VSS directly. <Reason> If the direction register setup changes for the output mode because of a program runaway or noise, a short circuit may occur between a port and VCC (or VSS). (3) I/O ports : When setting for the input mode, do not connect multiple ports in a lump to VCC or VSS through a resistor. <Reason> If the direction register setup changes for the output mode because of a program runaway or noise, a short circuit may occur between ports. * At the termination of unused pins, perform wiring at the shortest possible distance (20 mm or less) from microcomputer pins. PRELIMINARY Notice: This is not a final specification. Some parametric limits are subject to change. 3803 Group (Spec.H QzROM version) Notes on Interrupts 1. Change of relevant register settings When the setting of the following registers or bits is changed, the interrupt request bit may be set to "1". When not requiring the interrupt occurrence synchronized with these setting, take the following sequence. * Interrupt edge selection register (address 003A16) * Timer XY mode register (address 002316) * Timer Z mode register (address 002A16) Set the above listed registers or bits as the following sequence. 2. Check of interrupt request bit When executing the BBC or BBS instruction to an interrupt request bit of an interrupt request register immediately after this bit is set to "0", execute one or more instructions before executing the BBC or BBS instruction. Clear the interrupt request bit to "0" (no interrupt issued) NOP (one or more instructions) Set the corresponding interrupt enable bit to "0" (disabled). Set the interrupt edge select bit (active edge switch bit) or the interrupt (source) select bit to "1". NOP (one or more instructions) Set the corresponding interrupt request bit to "0" (no interrupt request issued). Set the corresponding interrupt enable bit to "1" (enabled). Fig 4. Sequence of changing relevant register <Reason> When setting the followings, the interrupt request bit may be set to "1". * When setting external interrupt active edge Concerned register:Interrupt edge selection register (address 003A16) Timer XY mode register (address 002316) Timer Z mode register (address 002A16) * When switching interrupt sources of an interrupt vector address where two or more interrupt sources are allocated. Concerned register: Interrupt source selection register (address 003916) Rev.1.10 Nov 14, 2005 REJ03B0166-0110 Page 86 of 91 Execute the BBC or BBS instruction Fig 5. Sequence of check of interrupt request bit <Reason> If the BBC or BBS instruction is executed immediately after an interrupt request bit of an interrupt request register is cleared to "0", the value of the interrupt request bit before being cleared to "0" is read. PRELIMINARY 3803 Group (Spec.H QzROM version) Notes on 8-bit Timer (timer 1, 2, X, Y) * If a value n (between 0 and 255) is written to a timer latch, the frequency division ratio is 1/(n+1). * When switching the count source by the timer 12, X and Y count source selection bits, the value of timer count is altered in unconsiderable amount owing to generating of thin pulses in the count input signals. Therefore, select the timer count source before set the value to the prescaler and the timer. * Set the double-function port of the CNTR0/CNTR1 pin and port P54/P55 to output in the pulse output mode. * Set the double-function port of CNTR0/CNTR1 pin and port P54/P55 to input in the event counter mode and the pulse width measurement mode. Notes on 16-bit Timer (timer Z) 1. Pulse output mode * Set the double-function port of the CNTR2 pin and port P47 to output. 2. Pulse period measurement mode * Set the double-function port of the CNTR2 pin and port P47 to input. * A read-out of timer value is impossible in this mode. The timer can be written to only during timer stop (no measurement of pulse period). * Since the timer latch in this mode is specialized for the readout of measured values, do not perform any write operation during measurement. * "FFFF16" is set to the timer when the timer underflows or when the valid edge of measurement start/completion is detected. Consequently, the timer value at start of pulse period measurement depends on the timer value just before measurement start. 3. Pulse width measurement mode * Set the double-function port of the CNTR2 pin and port P47 to input. * A read-out of timer value is impossible in this mode. The timer can be written to only during timer stop (no measurement of pulse period). * Since the timer latch in this mode is specialized for the readout of measured values, do not perform any write operation during measurement. * "FFFF16" is set to the timer when the timer underflows or when the valid edge of measurement start/completion is detected. Consequently, the timer value at start of pulse width measurement depends on the timer value just before measurement start. 4. Programmable waveform generating mode * Set the double-function port of the CNTR2 pin and port P47 to output. Rev.1.10 Nov 14, 2005 REJ03B0166-0110 Page 87 of 91 Notice: This is not a final specification. Some parametric limits are subject to change. 5. Programmable one-shot generating mode * Set the double-function port of CNTR2 pin and port P47 to output, and of INT1 pin and port P42 to input in this mode. * This mode cannot be used in low-speed mode. * If the value of the CNTR2 active edge switch bit is changed during one-shot generating enabled or generating one-shot pulse, then the output level from CNTR2 pin changes. 6. All modes * Timer Z write control Which write control can be selected by the timer Z write control bit (bit 3) of the timer Z mode register (address 002A16), writing data to both the latch and the timer at the same time or writing data only to the latch. When the operation "writing data only to the latch" is selected, the value is set to the timer latch by writing data to the address of timer Z and the timer is updated at next underflow. After reset release, the operation "writing data to both the latch and the timer at the same time" is selected, and the value is set to both the latch and the timer at the same time by writing data to the address of timer Z. In the case of writing data only to the latch, if writing data to the latch and an underflow are performed almost at the same time, the timer value may become undefined. * Timer Z read control A read-out of timer value is impossible in pulse period measurement mode and pulse width measurement mode. In the other modes, a read-out of timer value is possible regardless of count operating or stopped. However, a read-out of timer latch value is impossible. * Switch of interrupt active edge of CNTR2 and INT1 Each interrupt active edge depends on setting of the CNTR 2 active edge switch bit and the INT1 active edge selection bit. * Switch of count source When switching the count source by the timer Z count source selection bits, the value of timer count is altered in inconsiderable amount owing to generating of thin pulses on the count input signals. Therefore, select the timer count source before setting the value to the prescaler and the timer. PRELIMINARY Notice: This is not a final specification. Some parametric limits are subject to change. 3803 Group (Spec.H QzROM version) Notes on Serial Interface 1. Notes when selecting clock synchronous serial I/O (1) Stop of transmission operation As for serial I/Oi (i = 1, 3) that can be used as either a clock synchronous or an asynchronous (UART) serial I/O, clear the serial I/Oi enable bit and the transmit enable bit to "0" (serial I/Oi and transmit disabled). <Reason> Since transmission is not stopped and the transmission circuit is not initialized even if only the serial I/Oi enable bit is cleared to "0" (serial I/Oi disabled), the internal transmission is running (in this case, since pins TxDi, RxDi, SCLKi, and SRDYi function as I/O ports, the transmission data is not output). When data is written to the transmit buffer register in this state, data starts to be shifted to the transmit shift register. When the serial I/Oi enable bit is set to "1" at this time, the data during internally shifting is output to the TxDi pin and an operation failure occurs. (2) Stop of receive operation As for serial I/Oi (i = 1, 3) that can be used as either a clock synchronous or an asynchronous (UART) serial I/O, clear the receive enable bit to "0" (receive disabled), or clear the serial I/Oi enable bit to "0" (serial I/Oi disabled). (3) Stop of transmit/receive operation As for serial I/Oi (i = 1, 3) that can be used as either a clock synchronous or an asynchronous (UART) serial I/O, clear both the transmit enable bit and receive enable bit to "0" (transmit and receive disabled). (when data is transmitted and received in the clock synchronous serial I/O mode, any one of data transmission and reception cannot be stopped.) <Reason> In the clock synchronous serial I/O mode, the same clock is used for transmission and reception. If any one of transmission and reception is disabled, a bit error occurs because transmission and reception cannot be synchronized. In this mode, the clock circuit of the transmission circuit also operates for data reception. Accordingly, the transmission circuit does not stop by clearing only the transmit enable bit to "0" (transmit disabled). Also, the transmission circuit is not initialized by clearing the serial I/Oi enable bit to "0" (serial I/Oi disabled) (refer to (1) in 1.). 2. Notes when selecting clock asynchronous serial I/O (1) Stop of transmission operation Clear the transmit enable bit to "0" (transmit disabled). The transmission operation does not stop by clearing the serial I/Oi enable bit (i = 1, 3) to "0". <Reason> This is the same as (1) in 1. (2) Stop of receive operation Clear the receive enable bit to "0" (receive disabled). (3) Stop of transmit/receive operation Only transmission operation is stopped. Clear the transmit enable bit to "0" (transmit disabled). The transmission operation does not stop by clearing the serial I/Oi enable bit (i = 1, 3) to "0". <Reason> This is the same as (1) in 1. Only receive operation is stopped. Clear the receive enable bit to "0" (receive disabled). Rev.1.10 Nov 14, 2005 REJ03B0166-0110 Page 88 of 91 3. SRDYi (i = 1, 3) output of reception side When signals are output from the SRDYi pin on the reception side by using an external clock in the clock synchronous serial I/O mode, set all of the receive enable bit, the SRDYi output enable bit, and the transmit enable bit to "1" (transmit enabled). 4. Setting serial I/Oi (i = 1, 3) control register again Set the serial I/Oi control register again after the transmission and the reception circuits are reset by clearing both the transmit enable bit and the receive enable bit to "0." Clear both the transmit enable bit (TE) and the receive enable bit (RE) to "0" Set the bits 0 to 3 and bit 6 of the serial I/Oi control register Set both the transmit enable bit (TE) and the receive enable bit (RE), or one of them to "1" Fig 6. Can be set with the LDM instruction at the same time Sequence of setting serial I/Oi (i = 1, 3) control register again 5. Data transmission control with referring to transmit shift register completion flag After the transmit data is written to the transmit buffer register, the transmit shift register completion flag changes from "1" to "0" with a delay of 0.5 to 1.5 shift clocks. When data transmission is controlled with referring to the flag after writing the data to the transmit buffer register, note the delay. 6. Transmission control when external clock is selected When an external clock is used as the synchronous clock for data transmission, set the transmit enable bit to "1" at "H" of the SCLKi (i = 1, 3) input level. Also, write the transmit data to the transmit buffer register at "H" of the SCLKi input level. 7. Transmit interrupt request when transmit enable bit is set When using the transmit interrupt, take the following sequence. (1) Set the serial I/Oi transmit interrupt enable bit (i = 1, 3) to "0" (disabled). (2) Set the tranasmit enable bit to "1". (3) Set the serial I/Oi transmit interrupt request bit (i = 1, 3) to "0" after 1 or more instruction has executed. (4) Set the serial I/Oi transmit interrupt enable bit (i = 1, 3) to "1" (enabled). <Reason> When the transmission enable bit is set to "1", the transmit buffer empty flag and transmit shift register shift completion flag are also set to "1". Therefore, regardless of selecting which timing for the generating of transmit interrupts, the interrupt request is generated and the transmit interrupt request bit is set at this point. 8. Writing to baud rate generator i (BRGi) (i = 1, 3) Write data to the baud rate generator i (BRGi) (i = 1, 3) while the transmission/reception operation is stopped. PRELIMINARY Notice: This is not a final specification. Some parametric limits are subject to change. 3803 Group (Spec.H QzROM version) Notes on PWM The PWM starts from "H" level after the PWM enable bit is set to enable and "L" level is temporarily output from the PWM pin. The length of this "L" level output is as follows: n+1 2 * f(XIN) (s) (Count source selection bit = "0", where n is the value set in the prescaler) n+1 f(XIN) (s) (Count source selection bit = "1", where n is the value set in the prescaler) Notes on A/D Converter 1. Analog input pin Make the signal source impedance for analog input low, or equip an analog input pin with an external capacitor of 0.01 F to 1 F. Further, be sure to verify the operation of application products on the user side. <Reason> An analog input pin includes the capacitor for analog voltage comparison. Accordingly, when signals from signal source with high impedance are input to an analog input pin, charge and discharge noise generates. This may cause the A/D conversion precision to be worse. Notes on Watchdog Timer * Make sure that the watchdog timer H does not underflow while waiting Stop release, because the watchdog timer keeps counting during that term. * When the STP instruction disable bit has been set to "1", it is impossible to switch it to "0" by a program. Notes on RESET Pin Connecting capacitor In case where the RESET signal rise time is long, connect a ceramic capacitor or others across the RESET pin and the VSS pin. Use a 1000 pF or more capacitor for high frequency use. When connecting the capacitor, note the following : * Make the length of the wiring which is connected to a capacitor as short as possible. * Be sure to verify the operation of application products on the user side. <Reason> If the several nanosecond or several ten nanosecond impulse noise enters the RESET pin, it may cause a microcomputer failure. Notes on Low-speed Operation Mode 2. A/D converter power source pin The AVSS pin is A/D converter power source pins. Regardless of using the A/D conversion function or not, connect it as following : * AVSS : Connect to the VSS line <Reason> If the AVSS pin is opened, the microcomputer may have a failure because of noise or others. 1. Using sub-clock To use a sub-clock, fix bit 3 of the CPU mode register to "1" or control the Rd (refer to Figure 7) resistance value to a certain level to stabilize an oscillation. For resistance value of Rd, consult the oscillator manufacturer. 3. Clock frequency during A/D conversion The comparator consists of a capacity coupling, and a charge of the capacity will be lost if the clock frequency is too low. Thus, make sure the following during an A/D conversion. * f(XIN) is 500 kHz or more * Do not execute the STP instruction 4. Difference between at 8-bit reading in 10-bit A/D mode and at 8-bit A/D mode At 8-bit reading in the 10-bit A/D mode, "-1/2 LSB" correction is not performed to the A/D conversion result. In the 8-bit A/D mode, the A/D conversion characteristics is the same as 3802 group's characteristics because "-1/2 LSB" correction is performed. Notes on D/A Converter 1. VCC when using D/A converter The D/A converter accuracy when VCC is 4.0 V or less differs from that of when VCC is 4.0 V or more. When using the D/A converter, we recommend using a VCC of 4.0 V or more. 2. D/Ai conversion register when not using D/A converter When a D/A converter is not used, set all values of the D/Ai conversion registers (i = 1, 2) to "0016". The initial value after reset is "0016". Rev.1.10 Nov 14, 2005 REJ03B0166-0110 Page 89 of 91 XCIN XCOUT Rf Rd CCIN Fig 7. CCOUT Ceramic resonator circuit <Reason> When bit 3 of the CPU mode register is set to "0", the sub-clock oscillation may stop. 2. Switch between middle/high-speed mode and lowspeed mode If you switch the mode between middle/high-speed and lowspeed, stabilize both XIN and XCIN oscillations. The sufficient time is required for the sub clock to stabilize, especially immediately after power on and at returning from stop mode. When switching the mode between middle/high-speed and lowspeed, set the frequency on condition that f(XIN) > 3*f(XCIN). Quartz-Crystal Oscillator When using the quartz-crystal oscillator of high frequency, such as 16 MHz etc., it may be necessary to select a specific oscillator with the specification demanded. PRELIMINARY 3803 Group (Spec.H QzROM version) Notes on Restarting Oscillation * Restarting oscillation Usually, when the MCU stops the clock oscillation by STP instruction and the STP instruction has been released by an external interrupt source, the fixed values of Timer 1 and Prescaler 12 (Timer 1 = "0116 ", Prescaler 12 = "FF 16 ") are automatically reloaded in order for the oscillation to stabilize. The user can inhibit the automatic setting by writing "1" to bit 0 of MISRG (address 001016). However, by setting this bit to "1", the previous values, set just before the STP instruction was executed, will remain in Timer 1 and Prescaler 12. Therefore, you will need to set an appropriate value to each register, in accordance with the oscillation stabilizing time, before executing the STP instruction. <Reason> Oscillation will restart when an external interrupt is received. However, internal clock is supplied to the CPU only when Timer 1 starts to underflow. This ensures time for the clock oscillation using the ceramic resonators to be stabilized. Notes on Using Stop Mode * Register setting Since values of the prescaler 12 and Timer 1 are automatically reloaded when returning from the stop mode, set them again, respectively. (When the oscillation stabilizing time set after STP instruction released bit is "0") * Clock restoration After restoration from the stop mode to the normal mode by an interrupt request, the contents of the CPU mode register previous to the STP instruction execution are retained. Accordingly, if both main clock and sub clock were oscillating before execution of the STP instruction, the oscillation of both clocks is resumed at restoration. In the above case, when the main clock side is set as a system clock, the oscillation stabilizing time for approximately 8,000 cycles of the XIN input is reserved at restoration from the stop mode. At this time, note that the oscillation on the sub clock side may not be stabilized even after the lapse of the oscillation stabilizing time of the main clock side. Notes on Wait Mode * Clock restoration If the wait mode is released by a reset when XCIN is set as the system clock and XIN oscillation is stopped during execution of the WIT instruction, XCIN oscillation stops, XIN oscillations starts, and XIN is set as the system clock. In the above case, the RESET pin should be held at "L" until the oscillation is stabilized. Rev.1.10 Nov 14, 2005 REJ03B0166-0110 Page 90 of 91 Notice: This is not a final specification. Some parametric limits are subject to change. Notes on Handling of Power Source Pins In order to avoid a latch-up occurrence, connect a capacitor suitable for high frequencies as bypass capacitor between power source pin (VCC pin) and GND pin (VSS pin), and between power source pin (VCC pin) and analog power source input pin (AVSS pin). Besides, connect the capacitor to as close as possible. For bypass capacitor which should not be located too far from the pins to be connected, a ceramic capacitor of 0.01 F-0.1 F is recommended. Power Source Voltage When the power source voltage value of a microcomputer is less than the value which is indicated as the recommended operating conditions, the microcomputer does not operate normally and may perform unstable operation. In a system where the power source voltage drops slowly when the power source voltage drops or the power supply is turned off, reset a microcomputer when the power source voltage is less than the recommended operating conditions and design a system not to cause errors to the system by this unstable operation. Electric Characteristic Differences Between Flash Memory, Mask ROM and QzROM Version MCUs There are differences in the manufacturing processes and the mask pattern among flash memory, mask ROM, and QzROM version MCUs due to the differences of the ROM type. Even when the ROM type is the same, when the memory size is different, the manufacturing processes and the mask pattern differ. For these reasons, the oscillation circuit constants and the characteristics such as a characteristic value, operation margin, noise immunity, and noise radiation within the limits of electrical characteristics may differ. When manufacturing an application system, please perform sufficient evaluations in each product. Especially, when switching a product (example: change from the mask ROM version to QzROM version), please perform sufficient evaluations by the switching product in the stage before massproducing an application system. Product Shipped in Blank As for the product shipped in blank, Renesas does not perform the writing test to user ROM area after the assembly process though the QzROM writing test is performed enough before the assembly process. Therefore, a writing error of approx.0.1 % may occur. Moreover, please note the contact of cables and foreign bodies on a socket, etc. because a writing environment may cause some writing errors. PRELIMINARY 3803 Group (Spec.H QzROM version) QzROM Version Connect the CNVSS /VPP pin the shortest possible to the GND pattern which is supplied to the VSS pin of the microcomputer. In addition connecting an approximately 5 k resistor in series to the GND could improve noise immunity. In this case as well as the above mention, connect the pin the shortest possible to the GND pattern which is supplied to the V S S pin of the microcomputer. * Reason The CNVSS/VPP pin is the power source input pin for the built-in QzROM. When programming in the QzROM, the impedance of the VPP pin is low to allow the electric current for writing to flow into the built-in QzROM. Because of this, noise can enter easily. If noise enters the VPP pin, abnormal instruction codes or data are read from the QzROM, which may cause a program runaway. Approx. 5k VSS (Note) The shortest Note. Shows the microcomputer's pin. Wiring for the CNVSS/VPP Notes On QzROM Writing Orders When ordering the QzROM product shipped after writing, submit the mask file (extension: .mask) which is made by the mask file converter MM. Be sure to set the ROM option ("MASK option" written in the mask file converter) setup when making the mask file by using the mask file converter MM. Rev.1.10 Nov 14, 2005 REJ03B0166-0110 Notes On ROM Code Protect (QzROM product shipped after writing) As for the QzROM product shipped after writing, the ROM code protect is specified according to the mask option setup data in the mask file which is submitted at ordering. Renesas Technology corp. uses the mask option setup data at the ROM code protect address (address FFDB16) when writing to the QzROM. Consequently, the actual written value might differ from the ordered value as the contents of the ROM code protect address. The ROM option setup data in the mask file is "0016" for protect enabled, "FE16" (protect enabled to the protect area 1 only) or "FF16" for protect disabled. Therefore, the contents of the ROM code protect address of the QzROM product shipped after writing are "0016", "FE16" or "FF16". Note that the mask file which has nothing at the ROM option data or has the data other than "0016", "FE16" and "FF16" can not be accepted. The shortest (Note) CNVSS/VPP Fig 8. Notice: This is not a final specification. Some parametric limits are subject to change. Page 91 of 91 DATA REQUIRED FOR QzROM WRITING ORDERS The following are necessary when ordering a QzROM product shipped after writing: 1. QzROM Writing Confirmation Form* 2. Mark Specification Form* 3. ROM data...........Mask file * For the QzROM writing confirmation form and the mark specification form, refer to the "Renesas Technology Corp." Homepage (http://www.renesas.com/homepage.jsp). Note that we cannot deal with special font marking (customer's trademark etc.) in QzROM microcomputer. REVISION HISTORY 3803 Group (Spec.H QzROM version) Data Sheet Rev. Date Description 1.00 Sep. 30, 2005 - First edition issued 1.10 Nov. 14, 2005 20 Fig 14. Port block diagram (3) (18) Port P56 revised 61 Fig 54. Block diagram of Watchdog timer; STP instruction disable bit STP instruction function selection bit revised 69 QzROM version; approximately 1 k to 5 k resistor approximately 5 k resistor Fig 47. Wiring for the CNVSS/VPP added Notes On QzROM Writing Orders; (extension: .mask) (extension: .msk) revised Page Summary 82-83 Package Outline revised 84-91 Appendix added (1/1)