The RX has two watchdog timer units: the watchdog timer and the independent watchdog timer. While the independent watchdog timer only has the option of resetting the MCU when a timeout occurs, the watchdog timer can trigger an interrupt. Using these two together the watchdog timer could be used as a controlled shutdown mechanism while the independent watchdog could still offer the hard reset functionality. With this setup the standard watchdog could be used to detect errors in the user’s system that would only be recreated after a hard reset has occurred.