SPRUJ79 November 2024 F29H850TU
Each CPU has a watchdog timer that can optionally trigger a reset that lasts for 512 INTOSC1 cycles. CPU1 watchdog reset (CPU1.WDRS) produces an XRS. CPU2 watchdog reset (CPU2.WDRS) produces a CPU2.SYSRS and similarly CPU3 watchdog reset (CPU3.WDRS) produces a CPU3.SYSRS.
After a watchdog reset, the WDRSn bit in the RESC register is set. Software can read this bit to know the cause of reset and clear the status by writing a 1 into the corresponding bit in the RESCCLR register.