18.1 Description

The Dual Watchdog Timer (DWDT) is used to prevent system lock-up if the software becomes trapped in a deadlock. The DWDT embeds two independent watchdogs (WDT0 and WDT1) and each watchdog provides a monitoring period of up to 16 seconds.

One watchdog may be used to monitor critical software task execution time in an OS/RTOS by generating an interrupt only. The second watchdog may be used to generate a system reset if the software is trapped in a deadlock.

WDT0 and WDT1 clocks are driven by monitoring the slow clock (MD_SLCK).