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ADM8318WCY46ARJZR7 Datasheet(PDF) 1 Page - Analog Devices |
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ADM8318WCY46ARJZR7 Datasheet(HTML) 1 Page - Analog Devices |
1 / 16 page Supervisory Circuits with Watchdog and Manual Reset in 5-Lead SOT-23 Data Sheet ADM8316/ADM8318/ADM8319/ADM8320/ADM8321/ADM8322 Rev. 0 Document Feedback Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibilityisassumedbyAnalogDevicesforitsuse,norforanyinfringementsofpatentsorother rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 ©2013 Analog Devices, Inc. All rights reserved. Technical Support www.analog.com FEATURES 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, 1.6 sec, and 25.6 sec (typical) Manual reset input Multiple reset output options Low power consumption Specified over wide temperature range (−40°C to +125°C) Qualified for automotive applications 5-lead SOT-23 package APPLICATIONS Automotive infotainment Microprocessor systems Computers Controllers Intelligent instruments Portable equipment FUNCTIONAL BLOCK DIAGRAMS Figure 1. ADM8316 Figure 2. ADM8320 GENERAL DESCRIPTION The ADM8316/ADM8318/ADM8319/ADM8320/ADM8321/ ADM8322 are supervisory circuits that 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 an external push-button switch through a manual reset input. The six devices feature different combinations of watchdog input, manual reset input, and output stage configuration, as shown in Table 6. Each device 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, 1.6 sec, and 25.6 sec (typical). The ADM8316/ADM8318/ADM8319/ADM8320/ADM8321/ ADM8322 are available in 5-lead SOT-23 packages and typically consume only 10 µA, making them suitable for use in low power, portable applications. ADM8316 VCC VCC MR GND WDI RESET RESET GENERATOR WATCHDOG DETECTOR DEBOUNCE VREF ADM8320 VCC MR GND WDI RESET RESET GENERATOR WATCHDOG DETECTOR VREF DEBOUNCE |
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