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Watchdog Timer

Safety Features Application

Watchdog timers are used for automatically generating a system reset signal if the microcontroller or microprocessor neglects to periodically send a pulse. Monitoring for low supply voltage is an additional, common feature of watchdog ICs.

配料

任何GreenPak W / ACMP
No other components are needed

格林帕克Diagram

设计步骤

Set undervoltage threshold with an ACMP.
配置两个CNT / DLLY块Frequency detects。
Design the digital logic to combine active signals from undervoltage and watchdog timeout.
Add a One-shot counter to trigger the reset pulse. It can be inverted to be active low.

资源

GreenPak设计师文件

看门狗定时器GP.（5.33 kB）

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