R5105N SERIES Microprocessor Supervisory Circuit NO.EA-159-080808 OUTLINE The R5105N Series are CMOS-based microprocessor supervisory circuit, or high accuracy and ultra low supply current voltage detector with built-in delay circuit and watchdog timer. When the supply voltage is down across the threshold, or the watchdog timer does not detect the system clock from the microprocessor, the reset output is generated. The voltage detector circuit is used for the system reset, etc. The detector threshold is fixed internally, and the accuracy is 1.0%. The released delay time (Power-on Reset Delay) circuit is built-in, and output delay time is adjustable with an external capacitor, and the accuracy is 16%*. When the supply voltage becomes higher than the released voltage, the reset state will be maintained during the delay time. The output type of the reset is selectable, Nch open-drain, or CMOS. The time out period of the watchdog timer can be also set with an external capacitor, and the accuracy is 33%*. There are another 4 products by the difference of packages and the function of voltage detector and watchdog timer. The package of R5105N is SOT-23-6. FEATURES * Supply Current...................................................................... Typ. 11A * Operating Voltage Range ..................................................... 0.9V to 6.0V < Voltage Detector Part > * Detector Threshold Range.................................................... Stepwise setting with a step of 0.1V in the range of 1.5V to 5.5V * Detector Threshold Accuracy................................................ 1.0% * Power-on Reset Delay Time accuracy ................................. 16%* (-40C < = Topt < = 105C) * Power-on reset delay time of the voltage detector ............... Typ. 370ms with an external capacitor : 0.1F < Watchdog Timer Part > * Built-in a watchdog timer's time out period accuracy ........... 33%* (-40C < = Topt < = 105C) * Timeout period for watchdog timer ....................................... Typ. 310ms with an external capacitor : 0.1F * Reset timer for watchdog timer............................................. Typ. 34ms with an external capacitor : 0.1F * Package................................................................................ SOT-23-6 *) Accuracy to center value of (Min.+Max.)/2 APPLICATIONS * Supervisory circuit for equipment with using microprocessors. 1 R5105N BLOCK DIAGRAMS Nch Open Drain Output (R5105Nxx1A) CMOS Output (R5105Nxx1C) VDD 3 VDD 3 CD 6 CD 6 Vref2 Vref1 CTW 2 WATCHDOG TIMER CLOCK DETECTOR Vref2 5 GND WATCHDOG TIMER 1 SCK RESETB 4 Vref1 CTW 2 CLOCK DETECTOR 5 GND 1 SCK RESETB 4 SELECTION GUIDE The detector threshold, the output type and the taping type for the ICs can be selected at the users' request. The selection can be made with designating the part number as shown below; R5105Nxx1x-xx-x Part Number a b c d e Code 2 Contents a Designation of Package Type; N: SOT-23-6 b Setting Detector Threshold (-VDET); Stepwise setting with a step of 0.1V in the range of 1.5V to 5.5V is possible. c Designation of Output Type; A: Nch Open Drain C: CMOS d Designation of Taping Type ; TR (Refer to Taping Specifications; TR type is the standard direction.) e Designation of Composition of pin plating -F: Lead free solder plating (SOT-23-6) R5105N SERIES SELECTION R5105N Package R5106N R5107G R5108G SOT-23-6 With INH pin (Inhibit) R5109G SSOP-8G No Yes 2 clock input No With MR pin (Manual Reset) No Yes Yes With SENSE pin No Remarks CD pin and CTW pin are combined uses. No Yes No Operating Supply Current Voltage Range 11.5A 1.5V to 6.0V PIN CONFIGURATION * SOT-23-6 6 5 4 (mark side) 1 2 3 PIN DESCRIPTIONS * SOT-23-6 Pin No. Symbol Description 1 SCK Clock Input Pin from Microprocessor 2 CTW External Capacitor Pin for setting Reset and Watchdog Timer Timeout Period 3 VDD Power supply Pin 4 RESETB 5 GND 6 CD Output Pin for Reset signal of Watchdog timer and Voltage Detector. (Output "L" at detecting Detector Threshold and Watchdog Timer Reset.) Ground Pin External Capacitor Pin for Setting delay time of Voltage Detector 3 R5105N ABSOLUTE MAXIMUM RATINGS Symbol VDD Item Rating Unit -0.3 to 7.0 V Voltage of CD Pin -0.3 to VDD + 0.3 V Voltage of CTW Pin -0.3 to VDD + 0.3 V Voltage of RESETB Pin -0.3 to 7.0 V Input Voltage Voltage of SCK Pin -0.3 to 7.0 V Output Current Current of RESETB Pin 20 mA Supply Voltage VCD VCTW Output Voltage VRESETB VSCK IRESETB Topt=25C PD Power Dissipation (SOT-23-6)* 420 mW Topt Operating Temperature Range -40 to 105 C Tstg Storage Temperature Range -55 to 125 C * ) For Power Dissipation, please refer to PACKAGE INFORMATION to be described. ABSOLUTE MAXIMUM RATINGS Electronic and mechanical stress momentarily exceeded absolute maximum ratings may cause the permanent damages and may degrade the life time and safety for both device and system using the device in the field. The functional operation at or over these absolute maximum ratings is not assured. 4 R5105N ELECTRICAL CHARACTERISTICS VDD=6.0V, CTW=0.1F, CD=0.1F, In case of Nch Open Drain Output type, the output pin is pulled up with a resistance of 100k (R5105Nxx1A), unless otherwise noted. The specification in is checked and guaranteed by design engineering at -40C < = Topt < = 105C. * R5105Nxx1A/C Symbol * Topt=25C Item VDD Operating Voltage ISS Supply Current Min. Typ. Max. Unit 6.0 V 11 15 A Typ. Max. Unit 0.9 VDD= -VDET+0.5V, Clock pulse input VD Part Symbol Item -VDET Detector Threshold VHYS Detector Threshold Hysteresis -VDET/ Detector Threshold Topt Temperature Coefficient tPLH IRESETB * Conditions Output Delay Time Output Current (RESETB Output pin) Conditions Topt=25C -40C < = Topt < = 105C Min. x0.990 x1.010 x0.972 x1.015 -VDET x0.03 -40C < = Topt < = -VDET x0.07 100 105C CD=0.1F *1 -VDET x0.05 340 370 V V ppm/C 467 ms Nch VDD=1.2V VDS=0.1V 0.38 0.8 mA Pch *2 VDD=6.0V VDS=0.5V 0.65 0.9 mA Min. Typ. Max. Unit WDT Part Symbol Item Conditions tWD Watchdog Timeout period CTW=0.1F *1 230 310 450 ms tWR Reset Hold Time of WDT CTW=0.1F *1 29 34 48 ms VSCKH SCK Input "H" VDDx0.8 6.0 V VSCKL SCK Input "L" 0 VDDx0.2 V tSCKW SCK Input Pulse Width VSCKL=VDDx0.2 VSCKH=VDDx0.8 500 ns All of unit are tested and specified under load conditions such that Topt=25C except for Detector Threshold Temperature Coefficient. *1) The specification does not contain the temperature characteristics of the external capacitor. *2) In case of CMOS type (R5105Nxx1C) RECOMMENDED OPERATING CONDITIONS (ELECTRICAL CHARACTERISTICS) All of electronic equipment should be designed that the mounted semiconductor devices operate within the recommended operating conditions. The semiconductor devices cannot operate normally over the recommended operating conditions, even if when they are used over such conditions by momentary electronic noise or surge. And the semiconductor devices may receive serious damage when they continue to operate over the recommended operating conditions. 5 R5105N TIMING CHART VDD +VDET -VDET tPHL VCD tPHL +VTCD -VTCD tWD tWDI Vref2H VCTW Vref2L tPLH tPLH VSCK tWR VRESETB (1) (2) (3) (4) (1) ) VTCD : Threshold voltage of CD pin when a power-on reset pulse inverting. ) Vref2H : CTW pin voltage at the end of WDT timeout period. ) Vref2L : CTW pin voltage at the begin of WDT timeout period. OPERATION (1) When the power supply, VDD pin voltage becomes more than the released voltage (+VDET), after the released delay time (or the power on reset time tPLH), the output of RESETB becomes "H" level. (2) When the SCK pulse is input, the watchdog timer (WDT) is cleared, and CTW pin mode changes from the discharge mode to the charge mode. When the CTW pin voltage becomes higher than VrefH, the mode will change into the discharge mode, and next watchdog time count starts. (3) Unless the SCK pulse is input, WDT will not be cleared, and during the charging period of CTW pin, RESETB="L". (4) When the VDD pin becomes lower than the detector threshold voltage(-VDET), RESETB outputs "L". 6 R5105N * Watchdog Timeout period/Reset hold time The watchdog timeout period and reset hold time can be set with an external capacitor to CTW pin. The next equations describe the relation between the watchdog timeout period and the external capacitor value, or the reset hold time and the external capacitor value. tWD (s) = 3.1x106xC (F) tWR (s) = tWD/9 The watchdog timer (WDT) timeout period is determined with the discharge time of the external capacitor. During the watchdog timeout period, if the clock pulse from the system is detected, WDT is cleared and the capacitor is charged. When the charge of the capacitor completes, another watchdog timeout period starts again. During the watchdog timeout period, if the clock pulse from the system is not detected, during the next reset hold time RESETB pin outputs "L". After starting the watchdog timeout period, (just after from the discharge of the external capacitor) even if the clock pulse is input during the time period "tWDI", the clock pulse is ignored. tWDI (s) = tWD/10 * Released Delay Time (Power-on Reset delay time) The released delay time can be set with an external capacitor connected to the CD pin. The next equation describes the relation between the capacitance value and the released delay time (tPLH). tPLH (s) =3.7x106x C (F) When the VDD voltage becomes equal or less than (-VDET), discharge of the capacitor connected to the CD pin starts. Therefore, if the discharge is not enough and VDD voltage returns to (+VDET) or more, thereafter the delay time will be shorter than tPLH which is expected. Power on Reset Operation against the input glitch (tPLH1<tPLH) VDD +VDET -VDET 0V Complete Discharge VCD +VTCD -VTCD 0V Incomplete Discharge VRESETB 0V tPLH1 * tPLH Minimum Operating Voltage We specified the minimum operating voltage as the minimum input voltage in which the condition of RESETB pin being 0.1V or lower than 0.1V. (Herein, pull-up resistance is set as 100k in the case of the Nch open-drain output type.) 7 R5105N * RESETB Output RESETB pin's output type is selectable either the Nch open-drain output or CMOS output. If the Nch open-drain type output is selected, the RESETB pin is pulled up with an external resistor to an appropriate voltage source. * Clock Pulse Input Built-in watchdog timer is cleared with the SCK clock pulse within the watchdog timeout period. 8 R5105N TYPICAL APPLICATIONS Power Supply Microprocessor R 3 VDD RESETB 4 R5105Nxx1A Series SCK 1 CD 6 CD GND Microprocessor VDD VDD 3 VDD RESET RESETB 4 R5105Nxx1C Series SCK 1 I/O CTW 2 CD CTW 5 Power Supply 6 CD GND 5 RESET I/O CTW 2 CTW TEST CIRCUITS R (R5105Nxx1A) A 3 VDD RESETB 4 R5105Nxx1A/C Series SCK 1 CD 6 CD GND 5 Clock Input CTW 2 CTW Supply Current Test Circuit 9 R5105N TYPICAL CHARACTERISTICS 1) Supply Current vs. Input Voltage 20 18 16 14 12 10 8 6 4 2 0 R510xx301x 105C 25C -40C 0 1 2 3 4 5 Input Voltage VDD (V) Supply Current ISS (A) Supply Current ISS (A) R510xx151x 20 18 16 14 12 10 8 6 4 2 0 6 105C 25C -40C 0 1 2 3 4 5 Input Voltage VDD (V) 6 2) Detector Threshold vs. Temperature R510xx151x R510xx271x 2.74 Detector Threshold -VDET (V) Detector Threshold -VDET (V) 1.53 1.52 1.51 1.50 1.49 1.48 1.47 -40 -25 0 25 50 75 Temperature Topt (C) 105 R510xx421x Detector Threshold -VDET (V) 4.28 4.26 4.24 4.22 4.20 4.18 4.16 4.14 4.12 -40 -25 10 0 25 50 75 Temperature Topt (C) 105 2.73 2.72 2.71 2.70 2.69 2.68 2.67 2.66 -40 -25 0 25 50 75 Temperature Topt (C) 105 R5105N 3) Detector Threshold Hysteresis vs. Temperature R510xx271x 7 6 5 4 3 -40 -25 0 25 50 75 Temperature Topt (C) 105 Detector Threshold Hysteresys HYS (%) Detector Threshold Hysteresys HYS (%) R510xx151x 7 6 5 4 3 -40 -25 0 25 50 75 Temperature Topt (C) 105 Detector Threshold Hysteresys HYS (%) R510xx421x 7 6 5 4 3 -40 -25 0 25 50 75 Temperature Topt (C) 105 4) Nch Driver Output Current vs. VDS Nch Driver Output Current IRESETB (mA) R510xx 20 18 16 14 12 10 8 6 4 2 0 VDD=6.0V VDD=5.0V VDD=4.0V VDD=3.0V VDD=2.0V VDD=1.5V VDD=1.0V 0 0.2 0.4 0.6 0.8 VDS (V) 1.0 1.2 1.4 11 R5105N 5) Nch Driver Output Current vs. Input Voltage R510xx VDS=0.3V 20 18 16 14 12 10 8 6 4 2 0 Topt=- 40C Topt=25C Topt=105C 0 1 2 3 4 5 Input Voltage VDD (V) 6 Nch Driver Output Current IRESETB (mA) Nch Driver Output Current IRESETB (mA) R510xx VDS=0.5V 20 18 16 14 12 10 8 6 4 2 0 Topt=- 40C Topt=25C Topt=105C 0 1 2 3 4 5 Input Voltage VDD (V) 6 6) Pch Driver Output Current vs. Input Voltage R510xx VDS=0.3V 2.0 1.8 1.6 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0 Topt=- 40C Topt=25C Topt=105C 0 1 2 3 4 5 Input Voltage VDD (V) 6 Pch Driver Output Current IRESETB (mA) R510xx 12 VDS=1.0V 2.0 1.8 1.6 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0 Topt=- 40C Topt=25C Topt=105C 0 1 2 3 4 5 Input Voltage VDD (V) 6 Pch Driver Output Current IRESETB (mA) Pch Driver Output Current IRESETB (mA) R510xx VDS=0.5V 2.0 1.8 1.6 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0 Topt=- 40C Topt=25C Topt=105C 0 1 2 3 4 5 Input Voltage VDD (V) 6 R5105N 7) Released Delay Time vs. Input Voltage 8) Released Delay Time vs. Temperature R510xx R510xx VDD=6V Output Delay Time tPLH (ms) Output Delay Time tPLH (ms) Topt=25C 500 480 460 440 420 400 380 360 340 320 300 0 1 2 3 4 5 Input Voltage VDD (V) 6 7 500 480 460 440 420 400 380 360 340 320 300 -40 -25 0 25 50 75 Temperature Topt (C) 105 9) Detector Output Delay Time vs. Temperature 10) WDT Reset Timer vs. Temperature R510xx 100 90 1s 80 70 -VDET+1V 60 Input Voltage -VDET-1V 50 40 30 20 10 0 -40 -25 0 25 50 75 105 Temperature Topt (C) 11) WDT Timeout Period vs. Temperature WDT Reset Time tWR (ms) Detect Delay Time tPHL (s) R510xx 50 48 46 44 42 40 38 36 34 32 30 -40 -25 0 25 50 75 Temperature Topt (C) 12) WDT Reset Timer vs. Input Voltage R510xx WDT Reset Time tWR (ms) WDT Timeout Period tWD (ms) R510xx 400 380 360 340 320 300 280 260 240 220 200 -40 -25 0 25 50 75 Temperature Topt (C) 105 105 50 48 46 44 42 40 38 36 34 32 30 1 2 3 4 5 Input Voltage VDD (V) 6 13 R5105N 13) WDT Timeout Period vs. Input Voltage 14) Output Delay Time vs. External Capacitance R510xx 1000 400 380 360 340 320 300 280 260 240 220 200 Delay Time tPLH/tPHL (ms) WDT Timeout Period tWD (ms) R510xx 1 2 3 4 5 Input Voltage VDD (V) 100 1 0.1 0.01 0.001 0.1 6 tPLH 10 1s 1s Input Voltage -VDET+1V -VDET-1V tPHL 1 10 External Capacitance CD (nF) 100 TECHNICAL NOTES When R510xxxx1A (Nch Open Drain Output Type) is used in Figure A or Figure B, if impedance of Voltage Supply pin, VDD and VDD of this IC is large, detector threshold level would shift by voltage dropdown caused by the consumption current of the IC itself. Released voltage may also shift and delay time for start-up might be generated by this usage. When R510xxxx1C (CMOS Output Type) is used in Figure A or Figure B, Output level could be unstable by cross conduction current which is generated at detector threshold level or at released voltage level, therefore, do not use this IC with the connection in Figure A or Figure B. The connection in Figure C may cause the oscillation in both R510xxxx1A (Nch Open Drain Output) and R510xxxx1C (CMOS Output), therefore do not use R510xx Series with the connection in Figure C. VDD VDD VDD R1 R1 VDD R510xx Series RESETB GND Figure A 14 R2 R1 VDD VDD R510xx Series R510xx Series RESETB GND Figure B R2 RESETB GND Figure C PACKAGE INFORMATION * PE-SOT-23-6-0611 SOT-23-6 (SC-74) Unit: mm PACKAGE DIMENSIONS 2.90.2 +0.2 1.1 -0.1 1.90.2 (0.95) (0.95) 0.80.1 5 4 0 to 0.1 2 +0.1 0.15 -0.05 +0.1 0.4-0.2 0.2 Min. 1 2.80.3 +0.2 1.6 -0.1 6 TAPING SPECIFICATION +0.1 1.5 0 4.00.1 2.00.05 4 1 2 3 2.0Max. 3.50.05 5 3.2 6 8.00.3 1.750.1 0.30.1 3.3 4.00.1 1.10.1 TR User Direction of Feed TAPING REEL DIMENSIONS REUSE REEL (EIAJ-RRM-08Bc) (1reel=3000pcs) 210.8 +1 60 0 20.5 0 180 -1.5 130.2 11.41.0 9.00.3 PACKAGE INFORMATION PE-SOT-23-6-0611 POWER DISSIPATION (SOT-23-6) This specification is at mounted on board. Power Dissipation (PD) depends on conditions of mounting on board. This specification is based on the measurement at the condition below: Measurement Conditions Standard Land Pattern Environment Mounting on Board (Wind velocity=0m/s) Board Material Glass cloth epoxy plactic (Double sided) Board Dimensions 40mm x 40mm x 1.6mm Copper Ratio Top side : Approx. 50% , Back side : Approx. 50% Through-hole 0.5mm x 44pcs Measurement Result (Topt=25C,Tjmax=125C) Standard Land Pattern Free Air Power Dissipation 420mW 250mW Thermal Resistance ja=(125-25C)/0.42W=263C/W 400C/W 500 40 On Board 420 400 300 200 40 Power Dissipation PD(mW) 600 100 0 0 25 50 75 85 100 Ambient Temperature (C) 125 150 Power Dissipation Measurement Board Pattern IC Mount Area Unit : mm RECOMMENDED LAND PATTERN 2.4 1.0 0.7 MAX. 0.95 0.95 1.9 (Unit: mm) MARK INFORMATION ME-R5105N-080605 R5105N SERIES MARK SPECIFICATION * SOT-23-6 (SC-74) 1 * 2 3 4 1 , 2 : Product Code (refer to Part Number vs. Product Code) 3 , 4 : Lot Number Part Number vs. Product Code R5105Nxx1A Series Product Code Part Number R5105N151A R5105N161A R5105N171A R5105N181A R5105N191A R5105N201A R5105N211A R5105N221A R5105N231A R5105N241A R5105N251A R5105N261A R5105N271A R5105N281A R5105N291A R5105N301A R5105N311A R5105N321A R5105N331A R5105N341A R5105N351A R5105N361A R5105N371A R5105N381A 1 2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 A B C D E F G H J K L M N P Q R S T U V W X Y Z Part Number R5105N391A R5105N401A R5105N411A R5105N421A R5105N431A R5105N441A R5105N451A R5105N461A R5105N471A R5105N481A R5105N491A R5105N501A R5105N511A R5105N521A R5105N531A R5105N541A R5105N551A Product Code 1 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 A B C D E F G H J K L M N P Q R S R5105Nxx1C Series Product Code Part Number R5105N151C R5105N161C R5105N171C R5105N181C R5105N191C R5105N201C R5105N211C R5105N221C R5105N231C R5105N241C R5105N251C R5105N261C R5105N271C R5105N281C R5105N291C R5105N301C R5105N311C R5105N321C R5105N331C R5105N341C R5105N351C R5105N361C R5105N371C R5105N381C 1 2 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 A B C D E F G H J K L M N P Q R S T U V W X Y Z Part Number R5105N391C R5105N401C R5105N411C R5105N421C R5105N431C R5105N441C R5105N451C R5105N461C R5105N471C R5105N481C R5105N491C R5105N501C R5105N511C R5105N521C R5105N531C R5105N541C R5105N551C Product Code 1 2 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 A B C D E F G H J K L M N P Q R S