SPRUJ79 November 2024 F29H850TU
The watchdog module generates an output pulse 512 watchdog-clocks (WDCLKs) wide whenever the 8-bit watchdog up counter has reached the maximum value. The watchdog clock source is INTOSC1. Software must periodically write a 0x55 + 0xAA sequence into the watchdog key register to reset the watchdog counter. The counter can also be disabled. Figure 3-12 shows the various functional blocks within the watchdog module.