A TIMEOUT event automatically leads to a watchdog reset.
If the watchdog is configured to generate an interrupt on the TIMEOUT event, the watchdog reset is postponed by two 32.768 kHz clock cycles after the TIMEOUT event is generated. Once the TIMEOUT event is generated, and unless the watchdog is stopped, the impending watchdog reset will occur.
The watchdog can be reset from several reset sources, see Reset behavior. After a reset, the watchdog configuration registers are available for configuration.
See RESET — Reset control for more information about reset sources.
The TIMEOUT event will also generate NMI interrupt, when NMI interrupt is supported. See the the instance's configuration in Instantiation to see if NMI is supported.