Hardware Watchdog (PDL_HWWDG)

• Detect and reset runaway applications
• Configurable timeout period
• Watchdog "feed" function to reset the counter
• Automatic stop/re-start in standby mode

General Description

The Hardware Watchdog is a 32-bit down counter that generates an interrupt, and optional reset, when the timer expires. The counter can be fed by a normally-functioning application to reset the counter and avoid the interrupt/reset. This enables the forced reset of a runaway application (one that fails to feed the watchdog).

The watchdog is clocked from the built-in low-speed CR oscillator (CLKLC) which enables the safe use of standby mode in your application. The counter automatically stops in the low power state and re-starts when the device wakes up.

HWWDG Component Parameter Editor