内部看门狗与外部看门狗 本页已使用福昕阅读器进行编辑。 福昕软件（Ｃ）２００５－２００７，版权所有， 仅供试用。 Maxim > App Notes > AUTOMOTIVE CIRCUIT PROTECTION Keywords: Watchdog Timer, Reset, Timeout, Code, Toggle, Software error, Reliability Apr 25, 2008 APPLICATION NOTE 4229 Comparison of Internal and External Watchdog Timers By: Eric Schlaepfer, Applications Engineer Abstract: This article compares the benefits and drawbacks of internal (integrated with the microprocessor) and external (hardware-based) watchdog timers (WDTs). It explains that internal watchdog timers ar……