19.4.1 Modes of Operation

The Programmable Windowed mode can be enabled by setting the Watchdog Window Enable (WDTWINEN) bit (WDTCON[0]). In Programmable Windowed mode, software can clear the WDT only when the counter is in its final window before a period match occurs. There are four window size options. This window is active when the timer counter is greater than a predetermined value for each option. Any attempts to clear the WDT when the window is not active causes a device Reset. In Non-Windowed mode, software can clear the WDT anytime before the period match occurs.