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 A 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 GND 04533-028 WATCHDOG DETECTOR 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 A, 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 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 Rev. D 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. Trademarks and registered trademarks are the property of their respective owners. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 www.analog.com Fax: 781.461.3113 (c)2004-2008 Analog Devices, Inc. All rights reserved. ADM6316/ADM6317/ADM6318/ADM6319/ADM6320/ADM6321/ADM6322 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 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. D | Page 2 of 16 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 A A V V ppm/C VCC = 5.5 V VCC = 3.6 V TA = 25C TA = -40C to +85C 3 1 20 140 1120 1.4 28 200 1600 40 mV 2 40 280 2240 ms ms ms ms s VCC falling at 1 mV/s 0.3 V VCC 1.0 V, ISINK = 50 A 0.3 V 0.3 0.4 V V V V ns VCC 1.2 V, ISINK = 100 A VCC 2.7 V, ISINK = 1.2 mA VCC 4.5 V, ISINK = 3.2 mA VCC 2.7 V, ISOURCE = 500 A VCC 4.5 V, ISOURCE = 800 A 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 A VCC 2.7 V, ISOURCE = 500 A VCC 4.5 V, ISOURCE = 800 A 0.8 x VCC VCC - 1.5 5 RESET Rise Time RESET Output Voltage 25 0.3 0.4 V V V V V 0.3 0.3 0.3 0.4 1 V V V V A 9.3 153 2.4 38.4 ms ms sec sec ns V A A 0.8 x VCC 0.8 x 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 x VCC -20 6.3 102 1.6 25.6 120 -15 0.7 x VCC 160 Rev. D | Page 3 of 16 VCC 1.0 V, ISINK = 50 A VCC 1.2 V, ISINK = 100 A VCC 2.7 V, ISINK = 1.2 mA VCC 4.5 V, ISINK = 3.2 mA VIL = 0.3 x VCC, VIH = 0.7 x 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 x VCC 1 35 100 52 230 Max Unit Test Conditions/Comments 2.0 0.7 x VCC V V s ns k ns VTH > 4.0 V VTH < 4.0 V 75 Rev. D | Page 4 of 16 VCC = 5 V ADM6316/ADM6317/ADM6318/ADM6319/ADM6320/ADM6321/ADM6322 ABSOLUTE MAXIMUM RATINGS TA = 25C, unless otherwise noted. Table 3. Parameter VCC RESET (ADM6320, ADM6321, ADM6322) All Other Pins Output Current (RESET, RESET) Operating Temperature Range Storage Temperature Range JA 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 -40C to +85C -65C to +125C 270C/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 300C 215C 220C Rev. D | Page 5 of 16 ADM6316/ADM6317/ADM6318/ADM6319/ADM6320/ADM6321/ADM6322 5 VCC GND 2 TOP VIEW (Not to Scale) MR 3 RESET 1 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 RESET 3 Figure 4. ADM6317 Pin Configuration ADM6319/ ADM6322 5 VCC 4 MR TOP VIEW (Not to Scale) 04533-005 GND 2 ADM6316/ ADM6320 04533-002 RESET 1 04533-004 PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS 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 s, generates a reset. It features a 52 k 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. D | Page 6 of 16 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 3.5 -40 -20 0 20 40 TEMPERATURE (C) 60 80 30 20 -20 0 20 40 TEMPERATURE (C) 60 80 340 60 55 50 45 40 35 30 25 20 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 -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 -40 300 100 -40 04533-007 15 10 320 04533-010 MANUAL RESET TO RESET DELAY (ns) 75 70 65 ICC (A) 40 Figure 10. VCC Falling to Reset Propagation Delay vs. Temperature 80 NORMALIZED RESET THRESHOLD 50 0 -40 Figure 7. Supply Current vs. Temperature (ADM6316/ADM6317/ADM6318/ADM6320/ADM6321) 5 0 60 10 04533-006 4.0 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. D | Page 7 of 16 04533-011 ICC (A) 7.5 04533-009 8.0 VCC TO RESET DELAY (s) 8.5 ADM6316/ADM6317/ADM6318/ADM6319/ADM6320/ADM6321/ADM6322 190 1.20 MR MINIMUM PULSE WIDTH (ns) 1.10 1.05 1.00 0.95 160 150 140 130 120 -20 0 20 40 TEMPERATURE (C) 60 80 100 -50 Figure 13. Normalized Watchdog Timeout Period vs. Temperature (ADM6316/ADM6317/ADM6318/ADM6320/ADM6321) 160 3.8 RESET OCCURS ABOVE CURVE 3.6 MINIMUM PULSE WIDTH (ns) 120 VTH = 4.63V 80 60 40 100 OVERDRIVE VOLTAGE (mV) NEGATIVE PULSE 3.2 3.0 2.8 2.6 2.4 POSITIVE PULSE 1000 2.0 -40 Figure 14. Maximum VCC Transient Duration vs. Reset Threshold Overdrive 10 TEMPERATURE (C) 60 04533-015 0 10 3.4 2.2 VTH = 2.93V 04533-013 20 50 Figure 15. Manual Reset Minimum Pulse Width vs. Temperature (ADM6316/ADM6317/ADM6319/ADM6320/ADM6322) 140 100 0 TEMPERATURE (C) 04533-014 0.90 -40 MAXIMUM TRANSIENT DURATION (s) 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. D | Page 8 of 16 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 k, 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 F 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 tRP tRD 0V RESET RESET VCC 1V 0V tRP tRD 1V 0V VCC 0V 04533-019 RESET VCC WDI VTH tRP tWD 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 k resistor is adequate in most situations. Rev. D | Page 9 of 16 tRP 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 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 A. 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. NEGATIVE-GOING VCC TRANSIENTS 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 s 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 F bypass capacitor mounted close to VCC provides additional glitch rejection. 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). START SET WDI HIGH RESET PROGRAM CODE ENSURING RESET VALID TO VCC = 0 V SUBROUTINE SET WDI LOW RETURN Figure 20. Watchdog Flow Diagram VCC VCC VCC RESET 100k ADM6317/ ADM6318/ ADM6319/ ADM6321/ ADM6322 MR WDI RESET MICROPROCESSOR I/O 04533-020 RESET ADM6316 100k RESET 04533-018 ADM6316/ ADM6318/ ADM6319 INFINITE LOOP: WATCHDOG TIMES OUT 04533-021 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 k, should be used so that it does not overload the reset output when VCC is above 1 V. Figure 19. Ensuring Reset Valid to VCC = 0 V Rev. D | Page 10 of 16 Figure 21. Typical Application Circuit 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 = +25C 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 = -40C to +85C 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. D | 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 Table 8. Standard Models Model ADM6316DZ26ARJ ADM6316CY29ARJ ADM6316CY46ARJ ADM6316BX46ARJ ADM6316DZ31ARJ ADM6318CZ28ARJ ADM6318CY46ARJ ADM6318BX49ARJ ADM6319C29ARJ ADM6319B31ARJ ADM6319C46ARJ ADM6320CY29ARJ ADM6320CZ29ARJ ADM6320CY46ARJ ADM6321CY46ARJ ADM6322C46ARJ Reset Threshold (V) 2.63 2.93 4.63 4.63 3.08 2.8 4.63 4.90 2.93 3.08 4.63 2.93 2.93 4.63 4.63 4.63 Minimum Reset Timeout (ms) 1120 140 140 20 1120 140 140 20 140 20 140 140 140 140 140 140 Rev. D | Page 12 of 16 Typical Watchdog Timeout (sec) 25.6 1.6 1.6 0.102 25.6 25.6 1.6 0.102 N/A N/A N/A 1.6 25.6 1.6 1.6 N/A ADM6316/ADM6317/ADM6318/ADM6319/ADM6320/ADM6321/ADM6322 OUTLINE DIMENSIONS 2.90 BSC 5 4 2.80 BSC 1.60 BSC 1 2 3 PIN 1 0.95 BSC 1.90 BSC 1.30 1.15 0.90 1.45 MAX 0.15 MAX 0.50 0.30 0.22 0.08 10 5 0 SEATING PLANE 0.60 0.45 0.30 COMPLIANT TO JEDEC STANDARDS MO-178-A A 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: -40C TO +85C 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 Model 1, 2 ADM6316xxxARJ-RL7 ADM6316xxxARJZ-R7 4 ADM6317xxxARJZ-R74 ADM6318xxxARJ-RL7 ADM6318xxxARJZ-R74 ADM6319xxARJ-RL7 ADM6319xxARJZ-R74 ADM6320xxxARJ-RL7 ADM6320xxxARJZ-R74 ADM6321xxxARJ-RL7 ADM6321xxxARJZ-R74 ADM6322xxARJ-RL7 ADM6322xxARJZ-RL74 Temperature Range -40C to +85C -40C to +85C -40C to +85C -40C to +85C -40C to +85C -40C to +85C -40C to +85C -40C to +85C -40C to +85C -40C to +85C -40C to +85C -40C to +85C -40C to +85C Ordering Quantity 3 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 A minimum of 12,000 (four reels) must be ordered. 4 Z = RoHS Compliant Part. 2 Rev. D | Page 13 of 16 ADM6316/ADM6317/ADM6318/ADM6319/ADM6320/ADM6321/ADM6322 NOTES Rev. D | Page 14 of 16 ADM6316/ADM6317/ADM6318/ADM6319/ADM6320/ADM6321/ADM6322 NOTES Rev. D | Page 15 of 16 ADM6316/ADM6317/ADM6318/ADM6319/ADM6320/ADM6321/ADM6322 NOTES (c)2004-2008 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D04533-0-8/08(D) Rev. D | Page 16 of 16