PRELIMINARY TECHNICAL DATA Supervisory Circuits with Watchdog and Manual Reset in 5-Lead SOT-23 ADM6316/ADM6317/ADM6318/ADM6319/ADM6320/ADM6321/ADM6322 FEATURES FUNCTIONAL BLOCK DIAGRAM 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 (Min) 4 watchdog timeout options: 6.3 ms, 102 ms, 1600 ms, and 25.6s (Typ) Manual reset input Reset output stages: Push-pull active-low Open-drain active-low Push-pull active-high Low power consumption (3 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 RESET GENERATOR VREF MR VCC RESET DEBOUNCE GND 04533-0-001 WATCHDOG DETECTOR WDI Figure 1. APPLICATIONS Microprocessor systems Computers Controllers Intelligent instruments Portable equipment GENERAL DESCRIPTION The ADM6316/ADM6317/ADM6318/ADM6319/ADM6320/ ADM6321/ADM6322 are supervisory circuits which monitor power supply voltage levels and code execution integrity in microprocessor-based systems. As well as providing power on 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 means of 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 (min) and four watchdog timeout options of 6.3 ms, 102 ms, 1600 ms, and 25.6s (typ). The ADM6316-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 Watchdog Yes Yes Yes – Yes Yes – Manual Reset Yes Yes – Yes Yes Yes RESET RESET Push-Pull – Push-Pull Push-Pull Open-Drain Open-Drain Open-Drain – Push-Pull Push-Pull Push-Pull – Push-Pull Push-Pull Rev.PrC 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: 781.326.8703 © 2004 Analog Devices, Inc. All rights reserved. PRELIMINARY TECHNICAL DATA ADM6316/ADM6317/ADM6318/ADM6319/ADM6320/ADM6321/ADM6322 TABLE OF CONTENTS Specifications..................................................................................... 3 Typical Performance Characteristics ..............................................7 Absolute Maximum Ratings............................................................ 5 Outline Dimensions ....................................................................... 10 ESD Caution.................................................................................. 5 Ordering Guide .......................................................................... 11 Pin Configurations and Function Descriptions ........................... 6 Rev.PrC | Page 2 of 11 PRELIMINARY TECHNICAL DATA 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 Typ Max Unit Test Conditions/Comments 10 5 5.5 20 12 V µA µA VCC = 5.5 V VCC = 3.6 V VTH + 1.5% VTH + 2.5% V TA = +25°C V TA = −40°C to +85°C 1 RESET THRESHOLD VOLTAGE VTH − 1.5% VTH − 2.5% RESET THRESHOLD TEMPERATURE COEFFICIENT RESET THRESHOLD HYSTERESIS RESET TIMEOUT PERIOD ADM63__A ADM63__B ADM63__C ADM63__D VCC TO RESET DELAY PUSH-PULL OUTPUT (ADM6316, ADM6317, ADM6318, ADM6319, ADM6321, ADM6322) RESET Output Voltage VTH VTH 40 3 1 20 140 1120 1.4 28 200 1600 40 ppm/°C mV 2 40 280 2240 0.3 0.3 0.3 0.4 0.8 × VCC VCC − 1.5 5 RESET Rise Time RESET Output Voltage 25 Open-Drain Reset Output Leakage Current WATCHDOG INPUT (ADM6316, ADM6317, ADM6318, ADM6320, ADM6321) Watchdog Timeout Period WDI Pulse Width 4.3 71 1.12 17.9 50 6.3 102 1.6 25.6 Rev.PrC | Page 3 of 11 V V V V V V ns VCC falling at 1 mV/µs 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 VCC> = 2.7 V, ISOURCE = 500 µA VCC> = 4.5 V, I SOURCE = 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, I SOURCE = 800 µA 0.3 0.4 V V V V 0.3 0.3 0.3 0.4 1 V V V V µA 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 9.3 153 2.4 38.4 ms ms s s ns ADM63___W ADM63___X ADM63___Y ADM63___Z VIL = 0.3 × VCC, VIH = 0.7 × VCC, 0.8 × VCC 0.8 × VCC VCC – 1.5 OPEN-DRAIN OUTPUT (ADM6320, ADM6321, ADM6322) RESET Output Voltage ms ms ms ms µs PRELIMINARY TECHNICAL DATA ADM6316/ADM6317/ADM6318/ADM6319/ADM6320/ADM6321/ADM6322 Parameter WDI Input Threshold Min 0.3 × VCC WDI Input Current −20 MANUAL RESET INPUT (ADM6316, ADM6317, ADM6319, ADM6320, ADM6322) MR Input Threshold Typ 120 −15 Max 0.7 × VCC 160 0.8 2.0 0.3 × VCC 0.7 × VCC MR Input Pulse Width MR Glitch Rejection MR Pull-up Resistance MR to Reset Delay 1 35 100 52 230 Rev.PrC | Page 4 of 11 75 Unit V V µA µA V V V V µs ns k⍀ ns Test Conditions/Comments VWDI = VCC, time average VWDI = 0, time average VTH > 4.0 V VTH > 4.0 V VTH <4.0 V VTH < 4.0 V VCC = 5V PRELIMINARY TECHNICAL DATA ADM6316/ADM6317/ADM6318/ADM6319/ADM6320/ADM6321/ADM6322 ABSOLUTE MAXIMUM RATINGS TA = 25°C, unless otherwise noted. Table 3. Parameter VCC RESET (ADM6320, ADM6321, ADM6322) Output Current (RESET, RESET) Operating Temperature Range Storage Temperature Range θJA Thermal Impedance, SOT-23 Lead Temperature Soldering (10 sec) Vapour Phase (60 sec) Infrared (15 sec) Rating –0.3 V to +6 V –0.3 V to +6 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 and 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. 300°C 215°C 220°C ESD CAUTION ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on the human body and test equipment and can discharge without detection. Although this product features proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high energy electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance degradation or loss of functionality. Rev.PrC | Page 5 of 11 PRELIMINARY TECHNICAL DATA ADM6316/ADM6317/ADM6318/ADM6319/ADM6320/ADM6321/ADM6322 PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS TOP VIEW (Not to Scale) GND 2 4 WDI RESET 3 5 VCC RESET 1 ADM6318/ ADM6321 TOP VIEW (Not to Scale) 4 WDI Figure 3. ADM6317 Pin Configuration GND 2 4 WDI 04533-0-004 GND 2 VCC TOP VIEW (Not to Scale) MR 3 Figure 2. ADM6316/ADM6320 Pin Configuration RESET 1 5 ADM6317 04533-0-003 MR 3 RESET 1 VCC 04533-0-002 GND 2 5 ADM6316/ ADM6320 RESET 3 Figure 4. ADM6318/ADM6321 Pin Configuration 5 VCC 4 MR ADM6319/ ADM6322 TOP VIEW (Not to Scale) 04533-0-004 RESET 1 Figure 5. 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 MR (ADM6316/ADM6317/ ADM6320) RESET (ADM6318/ADM6319/ ADM6321/ADM6322) WDI (ADM6316/ADM6317/ ADM6318/ADM6320/ADM6321) MR (ADM6319/ADM6322) VCC 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 which, when forced low for at least 1 µs, 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 floating to disable the watchdog timer. Manual Reset Input. Power Supply Voltage Being Monitored. Rev.PrC | Page 6 of 11 PRELIMINARY TECHNICAL DATA ADM6316/ADM6317/ADM6318/ADM6319/ADM6320/ADM6321/ADM6322 TYPICAL PERFORMANCE CHARACTERISTICS 10.0 100 9.5 90 9.0 80 VCC TO RESET DELAY (µs) 8.5 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 65 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 5.5 300 280 260 240 220 200 180 160 140 120 100 –40 04533-0-007 15 10 320 –20 0 20 40 TEMPERATURE (°C) 60 80 04533-0-010 MANUAL RESET TO RESET DELAY (ns) 75 70 ICC (µA) 40 Figure 9. VCC Falling to Reset Propagation Delay vs. Temperature 80 Figure 10. Manual Reset to Reset Propagation Delay vs. Temperature (ADM6316/ADM6317/ADM6319/ADM6320/ADM6322) Figure 7. Supply Current vs. Supply Voltage 1.05 1.20 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 0.95 –40 –20 0 20 40 TEMPERATURE (°C) 60 80 04533-0-008 NORMALIZED RESET THRESHOLD 50 0 –40 Figure 6. Supply Current vs. Temperature (ADM6316/ADM6317/ADM6318/ADM6320/ADM6321) 5 0 60 10 04533-0-006 4.0 70 Figure 8. Normalized Reset Threshold vs. Temperature 0.80 –40 –20 0 20 40 TEMPERATURE (°C) 60 80 Figure 11. Normalized Reset Timeout Period vs. Temperature Rev.PrC | Page 7 of 11 04533-0-011 ICC (µA) 7.5 04533-0-009 8.0 PRELIMINARY TECHNICAL DATA 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 0 20 40 TEMPERATURE (°C) 60 80 100 –50 Figure 12. Normalized Watchdog Timeout Period vs. Temperature (ADM6316/ADM6317/ADM6318/ADM6320/ADM6321) 3.8 140 3.6 MINIMUM PULSE WIDTH (ns) 120 VTH = 4.9V 80 60 40 0 10 3.4 NEGATIVE PULSE 3.2 3.0 2.8 2.6 2.4 POSITIVE PULSE 2.2 VTH = 2.93V 100 OVER DRIVE VOD (mV) 1000 04533-0-013 20 50 Figure 14. Manual Reset Minimum Pulse Width vs. Temperature (ADM6316/ADM6317/ADM6319/ADM6320/ADM6322) 160 100 0 TEMPERATURE (°C) 04533-0-014 –20 Figure 13. Maximum VCC Transient Duration vs. Reset Threshold Overdrive Rev.PrC | Page 8 of 11 2.0 –40 10 TEMPERATURE (°C) 60 Figure 15. Watchdog Input Minimum Pulse Width vs. Temperature (ADM6316/ADM6317/ADM6318/ADM6320/ADM6321) 04333-0-015 0.90 –40 MAXIMUM TRANSIENT DURATION (µs) 170 110 04533-0-012 NORMALIZED WATCHDOG TIMEOUT 180 1.15 PRELIMINARY TECHNICAL DATA ADM6316/ADM6317/ADM6318/ADM6319/ADM6320/ADM6321/ADM6322 Table 5. Reset Threshold Options Part No. 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 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 ADM63 _ _ _ 50 ADM63 _ _ _ 49 ADM63 _ _ _ 48 ADM63 _ _ _ 47 ADM63 _ _ _ 46 ADM63 _ _ _ 45 ADM63 _ _ _ 44 ADM63 _ _ _ 43 ADM63 _ _ _ 42 ADM63 _ _ _ 41 ADM63 _ _ _ 40 ADM63 _ _ _ 39 ADM63 _ _ _ 38 ADM63 _ _ _ 37 ADM63 _ _ _ 36 ADM63 _ _ _ 35 ADM63 _ _ _ 34 ADM63 _ _ _ 33 ADM63 _ _ _ 32 ADM63 _ _ _ 31 ADM63 _ _ _ 30 ADM63 _ _ _ 29 ADM63 _ _ _ 28 ADM63 _ _ _ 27 ADM63 _ _ _ 26 ADM63 _ _ _ 25 Table 6. Reset Timeout Options Suffix A B C D Min 1 20 140 1.12 Typ 1.6 30 200 1.60 TA = −40°C to +85°C Min Max 4.875 5.125 4.778 5.023 4.680 4.920 4.583 4.818 4.514 4.746 4.388 4.613 4.270 4.490 4.193 4.408 4.095 4.305 3.998 4.203 3.900 4.100 3.803 3.998 3.705 3.895 3.608 3.793 3.510 3.690 3.413 3.588 3.315 3.485 3.218 3.383 3.120 3.280 3.003 3.157 2.925 3.075 2.857 3.000 2.730 2.870 2.633 2.768 2.564 2.696 2.438 2.563 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 Table 7. Watchdog Timer Operations Max 2 40 280 2.24 Unit ms ms ms s Suffix W X Y Z Min 4.3 71 1.12 17.9 Typ 6.3 102 1.6 25.6 Max 9.3 153 2.24 38.4 Unit ms ms s s Table 8. Standard Models Model ADM6316CY29ARJ ADM6316CY46ARJ ADM6318CY46ARJ ADM6319C46ARJ ADM6320CY29ARJ ADM6320CY46ARJ ADM6321CY46ARJ ADM6322C46ARJ Reset Threshold (V) 2.93 4.63 4.63 4.63 2.93 4.63 4.63 4.63 Minimum Reset Timeout (ms) 140 140 140 140 140 140 140 140 Rev.PrC | Page 9 of 11 Typical Watchdog Timeout (s) 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 PRELIMINARY TECHNICAL DATA 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 SEATING PLANE 10° 5° 0° COMPLIANT TO JEDEC STANDARDS MO-178AA Figure 16. 5-Lead Small Outline Transistor Package [SOT-23] (RJ-5) Dimensions shown in millimeters Rev.PrC | Page 10 of 11 0.60 0.45 0.30 PRELIMINARY TECHNICAL DATA ADM6316/ADM6317/ADM6318/ADM6319/ADM6320/ADM6321/ADM6322 ORDERING GUIDE ADM63__ __ __ __ A RJ - __ Generic No. Ordering Quantity: (16 - 22) RL7: 10,000 piece Reel RL: 3,000 piece Reel Reset Timeout Period A: 1ms (min) B: 20ms (min) C: 140ms (min) D: 1120ms (min) Watchdog Timeout Period W: 6.3ms (typ) X: 102ms (typ) Y: 1.6s (typ) Z: 25s (typ) Reset Threshold No. (25 - 50) Package Code: RJ: 5-Lead SOT-23 Temperature Range: A: -40°C -40 CCto A: to +85 +85°C Figure 17. Ordering Code Structure Model12 ADM6316 _ _ __ ARJ-RL7 ADM6317 _ _ __ ARJ-RL7 ADM6318 _ _ __ ARJ-RL7 ADM6319 _ __ ARJ-RL7 ADM6320 _ _ __ ARJ-RL7 ADM6321 _ _ __ ARJ-RL7 ADM6322 _ __ ARJ-RL7 1 2 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 Quantity 3k 3k 3k 3k 3k 3k 3k Package Option SOT-23-5 SOT-23-5 SOT-23-5 SOT-23-5 SOT-23-5 SOT-23-5 SOT-23-5 Branding N00 N01 N02 N03 N04 N05 N06 Complete the ordering code by inserting reset timeout, watchdog timeout (ADM6316/17/18/20/21) and reset threshold suffixes from tables 5 to 7. Contact the factory for the availability of nonstandard models. See Table 8 for a list of standard models. © 2004 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. PR04533-0-6/04(PrC) Rev.PrC | Page 11 of 11