Description
HA16117F Series CMOS Watchdog Timer .
The HA16117F Series of ICs make a micro-processor (MPU) system fail-safe by monitoring its power supply to detect voltage drops, and monitoring a P-RU.
Features
* Low power consumption : Operating (ACC pin low) = 0.5 mW (Typ) : Standby (ACC pin high) = 0.2 mW (Typ)
* Watchdog timer on/off control by ACC input signal
* Independent auto-reset high and low times (tRH and tRL)
* Watchdog monitoring by frequency filtering (indepen
Applications
* as well as for consumer products. Functions
* Power-on reset Sends a RES signal to the MPU for a fixed time at power-on
* Watchdog timer (WDT) Monitors a P-RUN signal from the MPU and sends the MPU a RES signal if P-RUN departs from a set frequency range
* Auto-reset
