Notes On Using Watchdog Timer - Fujitsu F2MC-8L F202RA Hardware Manual

CHAPTER 6 WATCHDOG TIMER
6.5

Notes on Using Watchdog Timer

Notes on using the watchdog timer are provided below.
■
Notes on Using Watchdog Timer
● Stopping watchdog timer
The watchdog timer cannot be stopped without accepting a reset upon activation.
● Clearing watchdog timer
Clearing the time-base timer counter that supplies the count clock to the watchdog timer also clears the
watchdog timer counter at the same time.
Switching to sleep or stop mode clears the watchdog timer counter.
● Notes on creating programs
When creating a program that repeatedly clears the watchdog timer in the main loop, ensure that the time
necessary for main loop processing, including interrupt handling, is shorter than the minimum time interval
of the watchdog timer.
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