R5106N SERIES Microprocessor Supervisory Circuit NO.EA-169-080707 OUTLINE The R5106N 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 is a function to stop supervising clock by the watchdog timer (INH function). There are another 4 products by the difference of packages and the function of voltage detector and watchdog timer. The package of R5106N 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 * With Inhibit pin (INH)............................................................. Able to stop watchdog timer * Package................................................................................ SOT-23-6 *) Accuracy to center value of (Min.+Max.)/2 APPLICATIONS * Supervisory circuit for equipment with using microprocessors. 1 R5106N BLOCK DIAGRAMS Nch Open Drain Output (R5106Nxx1A) CMOS Output (R5106Nxx1C) VDD 3 VDD 3 SW1 SW1 Vref2 CT Vref1 Vref2 5 GND 6 SW2 WATCHDOG TIMER CLOCK DETECTOR CT 6 5 GND SW2 1 SCK RESETB 4 2 INH SW1: "L"=ON, Vref1 WATCHDOG TIMER CLOCK DETECTOR RESETB 4 1 SCK 2 INH SW2: "H"=ON 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; R5106Nxx1x-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) R5106N 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 INH Inhibit Pin ("L": Inhibit the watchdog timer) 3 VDD Power supply Pin 4 RESETB 5 GND 6 CT 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 Reset and Watchdog Timeout Periods and delay time of Voltage Detector 3 R5106N ABSOLUTE MAXIMUM RATINGS Symbol VDD VCT VRESETB VSCK VINH IRESETB Item Rating Unit -0.3 to 7.0 V -0.3 to VDD + 0.3 V Voltage of RESETB Pin -0.3 to 7.0 V Voltage of SCK Pin -0.3 to 7.0 V Voltage of INH Pin -0.3 to 7.0 V 20 mA Supply Voltage Output Voltage Input Voltage Output Current Voltage of CT Pin Current of RESETB Pin 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 R5106N ELECTRICAL CHARACTERISTICS VDD=6.0V, CT=0.1F, In case of Nch Open Drain Output type, the output pin is pulled up with a resistance of 100k (R5106Nxx1A), unless otherwise noted. The specification in is checked and guaranteed by design engineering at -40C < = Topt < = 105C. * R5106Nxx1A/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 < = VDD=1.2V VDS=0.1V VDD=6.0V VDS=0.5V Nch Pch *1 -VDET x0.07 100 105C CT=0.1F -VDET x0.05 V V ppm/C 340 370 0.38 0.8 mA 0.65 0.9 mA Min. Typ. Max. Unit 467 ms WDT Part Symbol Item Conditions tWD Watchdog Timeout period CT=0.1F 230 310 450 ms tWR Reset Hold Time of WDT CT=0.1F 29 34 48 ms VSCKH SCK Input "H" VDDx0.8 6.0 V VSCKL SCK Input "L" 0 VDDx0.2 V VINHH INH Input "H" 1.0 6.0 V VINHL INH Input "L" 0 0.35 V RINH INH pull-up Resistance 60 164 k tSCKW SCK Input Pulse Width VSCKL=VDDx0.2 VSCKH=VDDx0.8 110 500 ns All of unit are tested and specified under load conditions such that Topt=25C except for Detector Threshold Temperature Coefficient. *1) In case of CMOS type (R5106Nxx1C) 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 R5106N TIMING CHART VDD +VDET -VDET VINH tPLH tWD tWDI Vref2H VCT Vref2L tPHL VSCK tWR tPLH VRESETB (1) (2) (3) (4) (5) (6) (7) ) Vref2H : CT pin voltage at the end of WDT timeout period. ) Vref2L : CT 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 CT pin mode changes from the discharge mode to the charge mode. When the CT pin voltage becomes higher than Vref2H, 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 CT pin, RESETB="L". (4) When the VDD pin becomes lower than the detector threshold voltage(-VDET), RESETB outputs "L". (5) If "L" signal is input to the INH pin, the RESETB outputs "H", regardless the SCK clock state. (6) During the "L" period of INH pin, the voltage detector monitors the supply voltage. 6 R5106N (7) When the signal to the INH pin is set from "L" to "H", the watchdog starts supervising the system clock, or charge cycle to the CT pin starts, the capacitor connected to the CT pin is charged with the current of setting Reset time of WDT * Watchdog Timeout period/Reset hold time The watchdog timeout period and reset hold time can be set with an external capacitor to CT 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 CT pin. The next equation describes the relation between the capacitance value and the released delay time (tPLH). tPLH (s) =3.7x106x C (F) The capacitor connected to CT pin determines tWD, tWR, and tPLH. When the VDD voltage becomes equal or less than (-VDET), discharge of the capacitor connected to the CT 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 VCT Complete Discharge +VTCT -VTCT 0V Incomplete Discharge VRESETB 0V tPHL tPLH1 tPHL tPLH 7 R5106N * 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.) * Inhibit (INH) Function If INH pin is set at "L", the watchdog timer stops monitoring the clock, and the RESETB output will be dominant by the voltage detector's operation. Therefore, if the supply voltage is set at more than the detector threshold level, RESETB outputs "H" regardless the clock pulse. INH pin is pulled up with a resistor (TYP.110k) internally. * 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 R5106N TYPICAL APPLICATIONS Power Supply Microprocessor RESETB 4 2 INH GND VDD 3 VDD RESET R5106Nxx1A 1 Series SCK SW Microprocessor VDD R 3 VDD Power Supply RESETB 4 R5106Nxx1C 1 Series SCK I/O SW CT 6 2 INH CT 5 RESET GND 5 I/O CT 6 CT TEST CIRCUIT R (R5106Nxx1A) A 3 VDD RESETB 4 Clock Input R5106Nxx1A/C 1 Series SCK SW 2 INH GND 5 CT 6 CT Supply Current Test Circuit 9 R5106N 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 R5106N 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 R5106N 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 R5106N 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 R5106N 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-R5106N-080624 R5106N SERIES MARK SPECIFICATION * SOT-23-6 1 * 2 3 4 1 , 2 : Product Code (refer to Part Number vs. Product Code) 3 , 4 : Lot Number Part Number vs. Product Code R5106Nxx1A Series Product Code Part Number R5106N151A R5106N161A R5106N171A R5106N181A R5106N191A R5106N201A R5106N211A R5106N221A R5106N231A R5106N241A R5106N251A R5106N261A R5106N271A R5106N281A R5106N291A R5106N301A R5106N311A R5106N321A R5106N331A R5106N341A R5106N351A R5106N361A R5106N371A R5106N381A 1 2 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 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 R5106N391A R5106N401A R5106N411A R5106N421A R5106N431A R5106N441A R5106N451A R5106N461A R5106N471A R5106N481A R5106N491A R5106N501A R5106N511A R5106N521A R5106N531A R5106N541A R5106N551A Product Code 1 2 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 A B C D E F G H J K L M N P Q R S R5106Nxx1C Series Product Code Part Number R5106N151C R5106N161C R5106N171C R5106N181C R5106N191C R5106N201C R5106N211C R5106N221C R5106N231C R5106N241C R5106N251C R5106N261C R5106N271C R5106N281C R5106N291C R5106N301C R5106N311C R5106N321C R5106N331C R5106N341C R5106N351C R5106N361C R5106N371C R5106N381C 1 2 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 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 R5106N391C R5106N401C R5106N411C R5106N421C R5106N431C R5106N441C R5106N451C R5106N461C R5106N471C R5106N481C R5106N491C R5106N501C R5106N511C R5106N521C R5106N531C R5106N541C R5106N551C Product Code 1 2 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 A B C D E F G H J K L M N P Q R S