CHAPTER 10 WATCHDOG TIMER
Reference:
When the watchdog timer is started, it can be initialized by a power-on reset or watchdog
reset so that it stops. In addition, the watchdog timer is still active even though the watchdog
counter is cleared at reset by the external pin, reset by software, writing to the watchdog
control bit (WTE) of the watchdog timer control register, transition to the sleep mode,
transition to the stop mode, and transition to the watch mode.
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