User manual

Chapter 15

SWCU117A–February 2015–Revised March 2015

Watchdog Timer

The watchdog timer (WDT) is used to regain control when the system has failed due to a software error or

to the failure of an external device to respond in the expected way. The WDT can generate a

nonmaskable interrupt (NMI), a regular interrupt, or a reset when a time-out value is reached. In addition,

the WDT can be configured to generate an interrupt to the microcontroller (MCU) on its first time-out and

to generate a reset signal on its second time-out.

Topic ........................................................................................................................... Page

15.1 WDT Introduction............................................................................................ 1143

15.2 WDT Functional Description............................................................................. 1143

15.3 WDT Initialization and Configuration ................................................................. 1144

15.4 Watchdog Timer Registers............................................................................... 1144

1142

Watchdog Timer SWCU117A–February 2015–Revised March 2015

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