APPLICATION NOTE 548

Using the High-Speed Micro's Watchdog Timer

By: Kevin Self

Abstract: Designers of high-speed microcontroller applications used in harsh environments will use watchdog timers to prevent out-of-control software. The DS80C320 high-speed micro has an integrated watchdog timer, eliminating the need for an external system control supervisor. This application note outlines the use of the DS80C320 watchdog timer. Software examples illustrate the use of the watchdog timer as a system supervisor, utilizing proper reset intervals and long interval timer.