ADM8320

Supervisory Circuits with Watchdog and Manual Reset in 5-Lead SOT-23 Data Sheet 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 ADM8316/ADM8318/ADM8319/ADM8320/ADM8321/ADM8322 FUNCTIONAL BLOCK DIAGRAMS ADM8316 VCC VCC VREF RESET GENERATOR RESET MR DEBOUNCE WATCHDOG DETECTOR 11779-001 GND WDI Figure 1. ADM8316 APPLICATIONS Automotive infotainment Microprocessor systems Computers Controllers Intelligent instruments Portable equipment VCC ADM8320 VREF RESET GENERATOR RESET MR DEBOUNCE WATCHDOG DETECTOR 11779-002 Free Datasheet http://www.Datasheet4U.com GND WDI 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 microprocessorbased 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 out...