ADM8320 Datasheet | Analog Devices

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 m V 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 DEBOUNCE WATCHDOG DETECTOR 11779-001 Figure 1. ADM8316 APPLICATIONS Automotive infotainment Microprocessor systems puters Controllers Intelligent instruments Portable equipment VREF RESET GENERATOR RESET DEBOUNCE WATCHDOG DETECTOR 11779-002 Free Datasheet http://.. 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 binations 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 m V 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...