Supervisory Circuits with Watchdog and Manual Reset in 5-Lead SOT-23 ADM6316/ADM6317/ADM6318/ADM6319/ADM6320/ADM6321/ADM6322 FEATURES FUNCTIONAL BLOCK DIAGRAMS 26 reset threshold options 2.5 V to 5 V in 100 mV increments 4 reset timeout options 1 ms, 20 ms, 140 ms, and 1120 ms (minimum) 4 watchdog timeout options 6.3 ms, 102 ms, 1600 ms, and 25.6 sec (typical) Manual reset input Reset output stages Push-pull active low Open-drain active low Push-pull active high Low power consumption: 5 µA Guaranteed reset output valid to VCC = 1 V Power supply glitch immunity Specified over industrial temperature range 5-lead SOT-23 package ADM6316 VCC VCC RESET GENERATOR VREF MR RESET DEBOUNCE GND 04533-001 WATCHDOG DETECTOR WDI Figure 1. ADM6320 VCC APPLICATIONS RESET GENERATOR VREF Microprocessor systems Computers Controllers Intelligent instruments Portable equipment MR RESET DEBOUNCE WATCHDOG DETECTOR GND 04533-028 Data Sheet WDI Figure 2. GENERAL DESCRIPTION The ADM6316/ADM6317/ADM6318/ADM6319/ADM6320/ ADM6321/ADM6322 are supervisory circuits that monitor power supply voltage levels and code execution integrity in microprocessor-based systems. As well as providing poweron reset signals, an on-chip watchdog timer can reset the microprocessor if it fails to strobe within a preset timeout period. A reset signal can also be asserted by an external push button through a manual reset input. The seven parts feature different combinations of watchdog input, manual reset input, and output stage configuration, as shown in Table 1. Each part is available in a choice of 26 reset threshold options ranging from 2.5 V to 5 V in 100 mV increments. There are also four reset timeout options of 1 ms, 20 ms, 140 ms, and 1120 ms (minimum) and four watchdog timeout options of 6.3 ms, 102 ms, 1600 ms, and 25.6 sec (typical). The ADM6316/ADM6317/ADM6318/ADM6319/ADM6320/ ADM6321/ADM6322 are available in 5-lead SOT-23 packages and typically consume only 3 µA, making them suitable for use in low power portable applications. Table 1. Selection Table Output Stage Part No. ADM6316 ADM6317 ADM6318 ADM6319 ADM6320 ADM6321 ADM6322 Rev. F Watchdog Yes Yes Yes No Yes Yes No Manual Reset Yes Yes No Yes Yes No Yes RESET Push-pull No Push-pull Push-pull Open-drain Open-drain Open-drain RESET No Push-pull Push-pull Push-pull No Push-pull Push-pull Document Feedback Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. 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Technical Support www.analog.com ADM6316/ADM6317/ADM6318/ADM6319/ADM6320/ADM6321/ADM6322 Data Sheet TABLE OF CONTENTS Features .............................................................................................. 1 Open-Drain RESET Output ........................................................9 Applications ....................................................................................... 1 Manual Reset Input .......................................................................9 Functional Block Diagrams ............................................................. 1 Watchdog Input .............................................................................9 General Description ......................................................................... 1 Applications Information .............................................................. 10 Revision History ............................................................................... 2 Watchdog Input Current ........................................................... 10 Specifications..................................................................................... 3 Negative-Going VCC Transients ................................................ 10 Absolute Maximum Ratings ............................................................ 5 Ensuring Reset Valid to VCC = 0 V ........................................... 10 ESD Caution .................................................................................. 5 Watchdog Software Considerations ......................................... 10 Pin Configurations and Function Descriptions ........................... 6 Options ............................................................................................ 11 Typical Performance Characteristics ............................................. 7 Outline Dimensions ....................................................................... 13 Circuit Description ........................................................................... 9 Ordering Guide .......................................................................... 13 Reset Output ................................................................................. 9 REVISION HISTORY 5/13—Rev. E to Rev. F Changes to Table 8 .......................................................................... 12 Changes to Ordering Guide .......................................................... 13 10/10—Rev. D to Rev. E Changes to Table 8 .......................................................................... 12 Updated Outline Dimensions ....................................................... 13 8/08—Rev. C to Rev. D Change to Figure 18 ......................................................................... 9 4/07—Rev. B to Rev. C Added Figure 2.................................................................................. 1 Changes to Figure 23 ...................................................................... 13 Changes to Ordering Guide .......................................................... 13 1/07—Rev. A to Rev. B Changes to Functional Block Diagram .......................................... 1 Changes to Figure 18 ...................................................................... 10 5/06—Rev. 0 to Rev. A Updated Format .................................................................. Universal Changes to Functional Block Diagram .......................................... 1 Changes to Table 8 .......................................................................... 12 Changes to Figure 22 ...................................................................... 13 Changes to Ordering Guide .......................................................... 13 10/04—Revision 0: Initial Version Rev. F | Page 2 of 16 Data Sheet ADM6316/ADM6317/ADM6318/ADM6319/ADM6320/ADM6321/ADM6322 SPECIFICATIONS VCC = full operating range, TA = TMIN to TMAX, unless otherwise noted. Table 2. Parameter SUPPLY VCC Operating Voltage Range Supply Current Min RESET THRESHOLD VOLTAGE VTH − 1.5% VTH − 2.5% RESET THRESHOLD TEMPERATURE COEFFICIENT RESET THRESHOLD HYSTERESIS RESET TIMEOUT PERIOD ADM63xxA ADM63xxB ADM63xxC ADM63xxD VCC TO RESET DELAY PUSH-PULL OUTPUT (ADM6316, ADM6317, ADM6318, ADM6319, ADM6321, ADM6322) RESET Output Voltage Typ 1 10 5 VTH VTH 40 Max Unit Test Conditions/Comments 5.5 20 12 VTH + 1.5% VTH + 2.5% V µA µA V V ppm/°C VCC = 5.5 V VCC = 3.6 V TA = 25°C TA = −40°C to +85°C 3 1 20 140 1120 1.4 28 200 1600 40 mV 2 40 280 2240 5 RESET Output Voltage 0.3 V VCC ≥ 1.0 V, ISINK = 50 µA V 0.3 0.4 V V V V ns VCC ≥ 1.2 V, ISINK = 100 µA VCC ≥ 2.7 V, ISINK = 1.2 mA VCC ≥ 4.5 V, ISINK = 3.2 mA VCC ≥ 2.7 V, ISOURCE = 500 µA VCC ≥ 4.5 V, ISOURCE = 800 µA From 10% to 90% VCC, CL = 5 pF, VCC = 3.3 V VCC ≥ 2.7 V, ISINK = 1.2 mA VCC ≥ 4.5 V, ISINK = 3.2 mA VCC ≥ 1.8 V, ISOURCE = 150 µA VCC ≥ 2.7 V, ISOURCE = 500 µA VCC ≥ 4.5 V, ISOURCE = 800 µA 25 0.3 0.4 V V V V V 0.3 0.3 0.3 0.4 1 V V V V µA 9.3 153 2.4 38.4 ms ms sec sec ns V µA µA 0.8 × VCC 0.8 × VCC VCC − 1.5 OPEN-DRAIN OUTPUT (ADM6320, ADM6321, ADM6322) RESET Output Voltage Open-Drain Reset Output Leakage Current WATCHDOG INPUT (ADM6316, ADM6317, ADM6318, ADM6320, ADM6321) Watchdog Timeout Period ADM63xxxW ADM63xxxX ADM63xxxY ADM63xxxZ WDI Pulse Width WDI Input Threshold WDI Input Current 4.3 71 1.12 17.9 50 0.3 × VCC −20 6.3 102 1.6 25.6 120 −15 VCC falling at 1 mV/µs 0.3 0.8 × VCC VCC − 1.5 RESET Rise Time ms ms ms ms µs 0.7 × VCC 160 Rev. F | Page 3 of 16 VCC ≥ 1.0 V, ISINK = 50 µA VCC ≥ 1.2 V, ISINK = 100 µA VCC ≥ 2.7 V, ISINK = 1.2 mA VCC ≥ 4.5 V, ISINK = 3.2 mA VIL = 0.3 × VCC, VIH = 0.7 × VCC VWDI = VCC, time average VWDI = 0, time average ADM6316/ADM6317/ADM6318/ADM6319/ADM6320/ADM6321/ADM6322 Parameter MANUAL RESET INPUT (ADM6316, ADM6317, ADM6319, ADM6320, ADM6322) MR Input Threshold MR Input Pulse Width MR Glitch Rejection MR Pull-Up Resistance MR to Reset Delay Min Typ 0.8 0.3 × VCC 1 35 100 52 230 Data Sheet Max Unit Test Conditions/Comments 2.0 0.7 × VCC V V µs ns kΩ ns VTH > 4.0 V VTH < 4.0 V 75 Rev. F | Page 4 of 16 VCC = 5 V Data Sheet ADM6316/ADM6317/ADM6318/ADM6319/ADM6320/ADM6321/ADM6322 ABSOLUTE MAXIMUM RATINGS TA = 25°C, unless otherwise noted. Table 3. Parameter VCC RESET (ADM6320, ADM6321, ADM6322) All Other Pins Output Current (RESET, RESET) Operating Temperature Range Storage Temperature Range θJA Thermal Impedance, SOT-23 Lead Temperature Soldering (10 sec) Vapor Phase (60 sec) Infrared (15 sec) Rating −0.3 V to +6 V −0.3 V to +6 V −0.3 V to (VCC + 0.3 V) 20 mA −40°C to +85°C −65°C to +125°C 270°C/W Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only; functional operation of the device at these or any other conditions above those indicated in the operational section of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. ESD CAUTION 300°C 215°C 220°C Rev. F | Page 5 of 16 ADM6316/ADM6317/ADM6318/ADM6319/ADM6320/ADM6321/ADM6322 Data Sheet PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS 4 WDI RESET 1 5 RESET 1 VCC TOP VIEW (Not to Scale) GND 2 4 WDI 04533-003 MR 3 4 WDI Figure 5. ADM6318/ADM6321 Pin Configuration ADM6317 GND 2 VCC TOP VIEW (Not to Scale) RESET 3 Figure 3. ADM6316/ADM6320 Pin Configuration 5 ADM6318/ ADM6321 04533-004 GND 2 TOP VIEW (Not to Scale) MR 3 RESET 1 VCC RESET 3 Figure 4. ADM6317 Pin Configuration 5 VCC 4 MR ADM6319/ ADM6322 TOP VIEW (Not to Scale) 04533-005 GND 2 5 ADM6316/ ADM6320 04533-002 RESET 1 Figure 6. ADM6319/ADM6322 Pin Configuration Table 4. Pin Function Descriptions Pin No. 1 2 3 4 5 Mnemonic RESET (ADM6316/ADM6318/ADM6319/ ADM6320/ADM6321/ADM6322) RESET (ADM6317) GND (all models) MR (ADM6316/ADM6317/ADM6320) RESET (ADM6318/ADM6319/ADM6321/ADM6322) WDI (ADM6316/ADM6317/ADM6318/ ADM6320/ADM6321) MR (ADM6319/ADM6322) VCC (all models) Description Active-Low Reset Output. Asserted whenever VCC is below the reset threshold, VTH. Push-Pull Output Stage for the ADM6316/ADM6318/ADM6319. Open-Drain Output Stage for the ADM6320/ADM6321/ADM6322. Active-High Push-Pull Reset Output. Ground. Manual Reset Input. This is an active-low input that when forced low for at least 1 µs, generates a reset. It features a 52 kΩ internal pull-up. Active-High Push-Pull Reset Output. Watchdog Input. Generates a reset if the logic level on the pin remains low or high for the duration of the watchdog timeout. The timer is cleared if a logic transition occurs on this pin or if a reset is generated. Leave this pin floating to disable the watchdog timer. Manual Reset Input. Power Supply Voltage Being Monitored. Rev. F | Page 6 of 16 Data Sheet ADM6316/ADM6317/ADM6318/ADM6319/ADM6320/ADM6321/ADM6322 TYPICAL PERFORMANCE CHARACTERISTICS 10.0 100 9.5 90 9.0 80 VCC = 5V 7.0 6.5 6.0 VCC = 3V 5.5 5.0 4.5 VCC = 1.5V –20 0 80 60 40 20 TEMPERATURE (°C) 40 30 20 –20 0 20 40 TEMPERATURE (°C) 60 80 Figure 10. VCC Falling to Reset Propagation Delay vs. Temperature 80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 0 0.5 1.0 1.5 2.0 2.5 3.0 VCC (V) 3.5 4.0 4.5 5.0 5.5 280 260 240 220 200 180 160 140 120 100 –40 –20 0 20 40 TEMPERATURE (°C) 60 80 Figure 11. Manual Reset to Reset Propagation Delay vs. Temperature (ADM6316/ADM6317/ADM6319/ADM6320/ADM6322) Figure 8. Supply Current vs. Supply Voltage 1.20 1.05 1.04 1.15 NORMALIZED RESET TIMEOUT 1.03 1.02 1.01 1.00 0.99 0.98 0.97 1.10 1.05 1.00 0.95 0.90 0.85 0.96 –20 0 20 40 TEMPERATURE (°C) 60 80 0.80 –40 04533-008 0.95 –40 320 300 04533-010 MANUAL RESET TO RESET DELAY (ns) 340 04533-007 ICC (µA) 50 0 –40 Figure 7. Supply Current vs. Temperature (ADM6316/ADM6317/ADM6318/ADM6320/ADM6321) NORMALIZED RESET THRESHOLD 60 10 04533-006 4.0 3.5 –40 70 –20 0 20 40 TEMPERATURE (°C) 60 80 Figure 12. Normalized Reset Timeout Period vs. Temperature Figure 9. Normalized Reset Threshold vs. Temperature Rev. F | Page 7 of 16 04533-011 ICC (µA) 7.5 04533-009 8.0 VCC TO RESET DELAY (µs) 8.5 ADM6316/ADM6317/ADM6318/ADM6319/ADM6320/ADM6321/ADM6322 1.20 Data Sheet 190 MR MINIMUM PULSE WIDTH (ns) 1.10 1.05 1.00 0.95 160 150 140 130 120 –20 0 20 40 TEMPERATURE (°C) 80 60 100 –50 Figure 13. Normalized Watchdog Timeout Period vs. Temperature (ADM6316/ADM6317/ADM6318/ADM6320/ADM6321) 160 50 Figure 15. Manual Reset Minimum Pulse Width vs. Temperature (ADM6316/ADM6317/ADM6319/ADM6320/ADM6322) 3.8 RESET OCCURS ABOVE CURVE 3.6 140 MINIMUM PULSE WIDTH (ns) 120 100 VTH = 4.63V 80 60 40 20 NEGATIVE PULSE 3.2 3.0 2.8 2.6 2.4 POSITIVE PULSE 2.0 –40 Figure 14. Maximum VCC Transient Duration vs. Reset Threshold Overdrive 10 TEMPERATURE (°C) 60 04533-015 1000 04533-013 100 OVERDRIVE VOLTAGE (mV) 3.4 2.2 VTH = 2.93V 0 10 0 TEMPERATURE (°C) 04533-014 0.90 –40 MAXIMUM TRANSIENT DURATION (µs) 170 110 04533-012 NORMALIZED WATCHDOG TIMEOUT 180 1.15 Figure 16. Watchdog Input Minimum Pulse Width vs. Temperature (ADM6316/ADM6317/ADM6318/ADM6320/ADM6321) Rev. F | Page 8 of 16 Data Sheet ADM6316/ADM6317/ADM6318/ADM6319/ADM6320/ADM6321/ADM6322 CIRCUIT DESCRIPTION RESET OUTPUT The ADM6316 features an active-low push-pull reset output, while the ADM6317/ADM6321/ADM6322 have active-high push-pull reset outputs. The ADM6318/ADM6319 feature dual active-low and active-high push-pull reset outputs. For activelow and active-high outputs, the reset signal is guaranteed to be logic low and logic high, respectively, for VCC down to 1 V. The reset output is asserted when VCC is below the reset threshold (VTH), when MR is driven low, or when WDI is not serviced within the watchdog timeout period (tWD). Reset remains asserted for the duration of the reset active timeout period (tRP) after VCC rises above the reset threshold, after MR transitions from low to high, or after the watchdog timer times out. Figure 17 illustrates the behavior of the reset outputs. VCC VCC VTH VTH MANUAL RESET INPUT The ADM6316/ADM6317/ADM6319/ADM6320/ADM6322 feature a manual reset input (MR), which when driven low, asserts the reset output. When MR transitions from low to high, reset remains asserted for the duration of the reset active timeout period before deasserting. The MR input has a 52 kΩ, internal pull-up so that the input is always high when unconnected. An external push-button switch can be connected between MR and ground so that the user can generate a reset. Debounce circuitry for this purpose is integrated on chip. Noise immunity is provided on the MR input, and fast, negative-going transients of up to 100 ns (typical) are ignored. A 0.1 μF capacitor between MR and ground provides additional noise immunity. WATCHDOG INPUT The ADM6316/ADM6317/ADM6318/ADM6320/ADM6321 feature a watchdog timer that monitors microprocessor activity. A timer circuit is cleared with every low-to-high or high-to-low logic transition on the watchdog input pin (WDI), which detects pulses as short as 50 ns. If the timer counts through the preset watchdog timeout period (tWD), reset is asserted. The microprocessor is required to toggle the WDI pin to avoid being reset. Failure of the microprocessor to toggle WDI within the timeout period, therefore, indicates a code execution error, and the reset pulse generated restarts the microprocessor in a known state. As well as logic transitions on WDI, the watchdog timer is also cleared by a reset assertion due to an undervoltage condition on VCC or due to MR being pulled low. When reset is asserted, the watchdog timer is cleared and does not begin counting again until reset deassserts. The watchdog timer can be disabled by leaving WDI floating or by three-stating the WDI driver. 1V 0V VCC VCC RESET tRP tRD 0V RESET 1V 0V tRP tRD 04533-019 RESET VCC VCC VTH 1V 0V VCC tRP tWD WDI VCC 0V Figure 17. Reset Timing Diagram Figure 18. Watchdog Timing Diagram OPEN-DRAIN RESET OUTPUT The ADM6320/ADM6321/ADM6322 have an active-low, opendrain reset output. This output structure requires an external pull-up resistor to connect the reset output to a voltage rail no higher than 6 V. The resistor should comply with the microprocessor’s logic low and logic high voltage level requirements while supplying input current and leakage paths on the RESET line. A 10 kΩ resistor is adequate in most situations. Rev. F | Page 9 of 16 tRP 0V 04533-022 The ADM6316/ADM6317/ADM6318/ADM6319/ADM6320/ ADM6321/ADM6322 provide microprocessor supply voltage supervision by controlling the microprocessor’s reset input. Code execution errors are avoided during power-up, power-down, and brownout conditions by asserting a reset signal when the supply voltage is below a preset threshold and by allowing supply voltage stabilization with a fixed timeout reset pulse after the supply voltage rises above the threshold. In addition, problems with microprocessor code execution can be monitored and corrected with a watchdog timer (ADM6316/ADM6317/ ADM6318/ADM6320/ADM6321). If the user detects a problem with the system’s operation, a manual reset input is available (ADM6316/ADM6317/ADM6319/ADM6320/ADM6322) to reset the microprocessor, for example, by means of an external push button. ADM6316/ADM6317/ADM6318/ADM6319/ADM6320/ADM6321/ADM6322 Data Sheet APPLICATIONS INFORMATION WATCHDOG INPUT CURRENT WATCHDOG SOFTWARE CONSIDERATIONS To minimize watchdog input current (and minimize overall power consumption), leave WDI low for the majority of the watchdog timeout period. When driven high, WDI can draw as much as 160 µA. Pulsing WDI low-to-high-to-low at a low duty cycle reduces the effect of the large input current. When WDI is unconnected, a window comparator disconnects the watchdog timer from the reset output circuitry so that reset is not asserted when the watchdog timer times out. In implementing the microprocessor’s watchdog strobe code, quickly switching WDI low to high and then high to low (minimizing WDI high time) is desirable for current consumption reasons. However, a more effective way of using the watchdog function can be considered. To avoid unnecessary resets caused by fast power supply transients, the ADM6316/ADM6317/ADM6318/ADM6319/ADM6320/ ADM6321/ADM6322 are equipped with glitch rejection circuitry. The typical performance characteristic in Figure 14 plots VCC transient duration vs. the transient magnitude. The curves show combinations of transient magnitude and duration for which a reset is not generated for 4.63 V and 2.93 V reset threshold parts. For example, with the 2.93 V threshold, a transient that goes 100 mV below the threshold and lasts 8 µs typically does not cause a reset, but if the transient is any larger in magnitude or duration, a reset is generated. An optional 0.1 µF bypass capacitor mounted close to VCC provides additional glitch rejection. ENSURING RESET VALID TO VCC = 0 V Both active-low and active-high reset outputs are guaranteed to be valid for VCC as low as 1 V. However, by using an external resistor with push-pull configured reset outputs, valid outputs for VCC as low as 0 V are possible. For an active-low reset output, a resistor connected between RESET and ground pulls the output low when it is unable to sink current. For the active-high case, a resistor connected between RESET and VCC pulls the output high when it is unable to source current. A large resistance, such as 100 kΩ, should be used so that it does not overload the reset output when VCC is above 1 V. START SET WDI HIGH RESET PROGRAM CODE SUBROUTINE SET WDI LOW RETURN Figure 20. Watchdog Flow Diagram VCC VCC VCC RESET 100kΩ ADM6317/ ADM6318/ ADM6319/ ADM6321/ ADM6322 MR WDI RESET MICROPROCESSOR I/O 04533-020 RESET ADM6316 100kΩ RESET 04533-018 ADM6316/ ADM6318/ ADM6319 INFINITE LOOP: WATCHDOG TIMES OUT 04533-021 NEGATIVE-GOING VCC TRANSIENTS A low-to-high-to-low WDI pulse within a given subroutine prevents the watchdog from timing out. However, if the subroutine becomes stuck in an infinite loop, the watchdog cannot detect this because the subroutine continues to toggle WDI. A more effective coding scheme for detecting this error involves using a slightly longer watchdog timeout. In the program that calls the subroutine, WDI is set high. The subroutine sets WDI low when it is called. If the program executes without error, WDI is toggled high and low with every loop of the program. If the subroutine enters an infinite loop, WDI is kept low, the watchdog times out, and the microprocessor is reset (see Figure 20). Figure 19. Ensuring Reset Valid to VCC = 0 V Rev. F | Page 10 of 16 Figure 21. Typical Application Circuit Data Sheet ADM6316/ADM6317/ADM6318/ADM6319/ADM6320/ADM6321/ADM6322 OPTIONS Table 5. Reset Voltage Threshold Options Part No. ADM63xxx50 ADM63xxx49 ADM63xxx48 ADM63xxx47 ADM63xxx46 ADM63xxx45 ADM63xxx44 ADM63xxx43 ADM63xxx42 ADM63xxx41 ADM63xxx40 ADM63xxx39 ADM63xxx38 ADM63xxx37 ADM63xxx36 ADM63xxx35 ADM63xxx34 ADM63xxx33 ADM63xxx32 ADM63xxx31 ADM63xxx30 ADM63xxx29 ADM63xxx28 ADM63xxx27 ADM63xxx26 ADM63xxx25 Min 4.925 4.827 4.728 4.630 4.561 4.433 4.314 4.236 4.137 4.039 3.940 3.842 3.743 3.645 3.546 3.448 3.349 3.251 3.152 3.034 2.955 2.886 2.758 2.660 2.591 2.463 TA = +25°C Typ 5.000 4.900 4.800 4.700 4.630 4.500 4.390 4.300 4.200 4.100 4.00 3.900 3.800 3.700 3.600 3.500 3.400 3.300 3.200 3.080 3.000 2.930 2.800 2.700 2.630 2.500 Max 5.075 4.974 4.872 4.771 4.699 4.568 4.446 4.365 4.263 4.162 4.060 3.959 3.857 3.756 3.654 3.553 3.451 3.350 3.248 3.126 3.045 2.974 2.842 2.741 2.669 2.538 Min 4.875 4.778 4.680 4.583 4.514 4.388 4.270 4.193 4.095 3.998 3.900 3.803 3.705 3.608 3.510 3.413 3.315 3.218 3.120 3.003 2.925 2.857 2.730 2.633 2.564 2.438 TA = −40°C to +85°C Max 5.125 5.023 4.920 4.818 4.746 4.613 4.490 4.408 4.305 4.203 4.100 3.998 3.895 3.793 3.690 3.588 3.485 3.383 3.280 3.157 3.075 3.000 2.870 2.768 2.696 2.563 Table 6. Reset Timeout Options Suffix A B C D Min 1 20 140 1.12 Typ 1.6 30 200 1.60 Max 2 40 280 2.24 Unit ms ms ms sec Typ 6.3 102 1.6 25.6 Max 9.3 153 2.24 38.4 Unit ms ms sec sec Table 7. Watchdog Timer Options Suffix W X Y Z Min 4.3 71 1.12 17.9 Rev. F | Page 11 of 16 Unit V V V V V V V V V V V V V V V V V V V V V V V V V V ADM6316/ADM6317/ADM6318/ADM6319/ADM6320/ADM6321/ADM6322 Data Sheet Table 8. Standard Models Model ADM6316CW25-ARJZ-R7 ADM6316DZ26-ARJ-RL7 ADM6316DZ26-ARJZ-R7 ADM6316AY27-ARJZ-R7 ADM6316AY29-ARJZ-R7 ADM6316AZ29ARJZ-R7 ADM6316CY29-ARJ-RL7 ADM6316CY29-ARJZ-R7 ADM6316BX30-ARJZ-R7 ADM6316DZ31-ARJ-RL7 ADM6316DZ31-ARJZ-R7 ADM6316BX46-ARJZ-R7 ADM6316CY26ARJZ-R7 ADM6316CY46-ARJ-RL7 ADM6316CY46-ARJZ-R7 ADM6318CZ28-ARJ-RL7 ADM6318CZ28-ARJZ-R7 ADM6318CY29-ARJZ-R7 ADM6318CY45-ARJZ-R7 ADM6318CY46-ARJ-RL7 ADM6318CY46-ARJZ-R7 ADM6318BX49-ARJZ-R7 ADM6319C29-ARJ-RL7 ADM6319C29-ARJZ-RL7 ADM6319B25ARJZ-R7 ADM6319B31-ARJZ-RL7 ADM6319C46-ARJ-RL7 ADM6319C46-ARJZ-RL7 ADM6320CZ27-ARJZ-R7 ADM6320CX29-ARJZ-R7 ADM6320CY29-ARJ-RL7 ADM6320CY29-ARJZ-R7 ADM6320CZ29-ARJ-RL7 ADM6320CZ29-ARJZ-R7 ADM6320BX33-ARJZ-R7 ADM6320CW33-ARJZ-R7 ADM6320BX45-ARJZ-R7 ADM6320CY46-ARJ-RL7 ADM6320CY46-ARJZ-R7 ADM6321BZ25-ARJZ-R7 ADM6321AY30ARJZ-R7 ADM6321AY31ARJZ-R7 ADM6321AY43-ARJZ-R7 ADM6321CY46-ARJ-RL7 ADM6321CY46-ARJZ-R7 ADM6322C29ARJZ-RL7 ADM6322C46-ARJ-RL7 ADM6322C46-ARJZ-RL7 Reset Threshold (V) 2.5 2.63 2.63 2.7 2.93 2.93 2.93 2.93 3 3.08 3.08 4.63 2.63 4.63 4.63 2.8 2.8 2.93 4.5 4.63 4.63 4.9 2.93 2.93 2.5 3.08 4.63 4.63 2.7 2.93 2.93 2.93 2.93 2.93 3.3 3.3 4.5 4.63 4.63 2.5 3 3.08 4.3 4.63 4.63 2.93 4.63 4.63 Minimum Reset Timeout (ms) 140 1120 1120 1 1 1 140 140 20 1120 1120 20 140 140 140 140 140 140 140 140 140 20 140 140 20 20 140 140 140 140 140 140 140 140 140 20 20 140 140 20 1 1 1 140 140 140 140 140 Rev. F | Page 12 of 16 Typical Watchdog Timeout (sec) 0.0063 25.6 25.6 1.6 1.6 25.6 1.6 1.6 0.102 25.6 25.6 0.102 1.6 1.6 1.6 25.6 25.6 1.6 1.6 1.6 1.6 0.102 N/A N/A n/A N/A N/A N/A 25.6 0.102 1.6 1.6 25.6 25.6 0.102 0.0063 0.102 1.6 1.6 25.6 1.6 1.6 1.6 1.6 1.6 N/A N/A N/A Data Sheet ADM6316/ADM6317/ADM6318/ADM6319/ADM6320/ADM6321/ADM6322 OUTLINE DIMENSIONS 3.00 2.90 2.80 1.70 1.60 1.50 5 1 4 2 3.00 2.80 2.60 3 0.95 BSC 1.90 BSC 1.45 MAX 0.95 MIN 0.15 MAX 0.05 MIN 0.50 MAX 0.35 MIN 0.20 MAX 0.08 MIN SEATING PLANE 10° 5° 0° 0.60 BSC 0.55 0.45 0.35 11-01-2010-A 1.30 1.15 0.90 COMPLIANT TO JEDEC STANDARDS MO-178-AA Figure 22. 5-Lead Small Outline Transistor Package [SOT-23] (RJ-5) Dimensions shown in millimeters ADM63 _ _ _ _ARJ_-_ ORDERING QUANTITY RL7: 3000 PIECE REEL R7: 3000 PIECE REEL RoHS COMPLIANT GENERIC NUMBER (16 TO 22) Z: RoHS COMPLIANT PACKAGE CODE RJ: 5-LEAD SOT-23 WATCHDOG TIMEOUT PERIOD W: 6.3ms (TYP) X: 102ms (TYP) Y: 1.6sec (TYP) Z: 25.6sec (TYP) TEMPERATURE RANGE A: –40°C TO +85°C RESET THRESHOLD NUMBER (25 TO 50) 04533-024 RESET TIMEOUT PERIOD A: 1ms (MIN) B: 20ms (MIN) C: 140ms (MIN) D: 1120ms (MIN) Figure 23. Ordering Code Structure (Modified Diagram) ORDERING GUIDE Model1, 2, 3 ADM6316xxxARJ-RL7 ADM6316xxxARJZ-R7 ADM6317xxxARJZ-R7 ADM6318xxxARJ-RL7 ADM6318xxxARJZ-R7 ADM6319xxARJ-RL7 ADM6319xxARJZ-R7 ADM6320xxxARJ-RL7 ADM6320xxxARJZ-R7 ADM6321xxxARJ-RL7 ADM6321xxxARJZ-R7 ADM6322xxARJ-RL7 ADM6322xxARJZ-RL7 Temperature Range −40°C to +85°C −40°C to +85°C −40°C to +85°C −40°C to +85°C −40°C to +85°C −40°C to +85°C −40°C to +85°C −40°C to +85°C −40°C to +85°C −40°C to +85°C −40°C to +85°C −40°C to +85°C −40°C to +85°C Ordering Quantity4 3,000 3,000 3,000 3,000 3,000 3,000 3,000 3,000 3,000 3,000 3,000 3,000 3,000 1 Package Description 5-Lead SOT-23 5-Lead SOT-23 5-Lead SOT-23 5-Lead SOT-23 5-Lead SOT-23 5-Lead SOT-23 5-Lead SOT-23 5-Lead SOT-23 5-Lead SOT-23 5-Lead SOT-23 5-Lead SOT-23 5-Lead SOT-23 5-Lead SOT-23 Package Option RJ-5 RJ-5 RJ-5 RJ-5 RJ-5 RJ-5 RJ-5 RJ-5 RJ-5 RJ-5 RJ-5 RJ-5 RJ-5 Branding N00 M7Q M9N N02 M4Q N03 N0S N04 N0T N05 M8L N06 M8J Complete the ordering code by inserting reset threshold, reset timeout, and watchdog timeout (ADM6316/ADM6317/ADM6318/ADM6320/ADM6321) suffixes from Table 5 to Table 7. No watchdog timeout is available for ADM6319/ADM6322. Contact sales for the availability of nonstandard models. See Table 8 for a list of standard models. 3 Z = RoHS Compliant Part. 4 A minimum of 12,000 (four reels) must be ordered. 2 Rev. F | Page 13 of 16 ADM6316/ADM6317/ADM6318/ADM6319/ADM6320/ADM6321/ADM6322 NOTES Rev. F | Page 14 of 16 Data Sheet Data Sheet ADM6316/ADM6317/ADM6318/ADM6319/ADM6320/ADM6321/ADM6322 NOTES Rev. F | Page 15 of 16 ADM6316/ADM6317/ADM6318/ADM6319/ADM6320/ADM6321/ADM6322 NOTES ©2004–2013 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D04533-0-5/13(F) Rev. F | Page 16 of 16 Data Sheet