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, 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 μA Guaranteed reset output valid to VCC = 1 V Power supply glitch immunity Specified over industrial temperature range 5-lead SOT-23 package APPLICATIONS
Microprocessor systems Computers Controllers Intelligent instruments Portable equipment GENERAL DESCRIPTION
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 through a manual reset input. Table 1. Selection Table Part No. ADM6316 ADM6318 ADM6319 ADM6320 ADM6321 ADM6322 Watchdog Yes Yes No Yes Yes No Manual Reset Yes No Yes Yes No Yes FUNCTIONAL BLOCK DIAGRAMS ADM6316 VCC VREF RESET GENERATOR VCC RESET MR DEBOUNCE WATCHDOG DETECTOR 04533-001 GND ADM6320 WDI Figure 1.
Analog Devices
