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In HALT and STOP modes, does Watchdog Timer (WDT) run?

April 26, 2017Halt modes run watchdog timer wdt

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In HALT and STOP modes, does Watchdog Timer (WDT) run?

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The clock source of SPMC65 MCU WDT is supplied by the on-chip RC oscillator. In the HALT mode, all the peripherals keep the original running state and run normally, except that CPU stops for power saving; at this time the watchdog runs normally; in the STOP mode, on-chip RC oscillator stops working, CPU and all peripherals also stop. At this time whether the watchdog is enabled lies on the watchdog setting before entering STOP mode, if the watchdog is set to be enabled in the STOP mode, it will run normally and wake up CPU from the STOP mode with watchdog interrupt function; if the watchdog is set to be disabled in the STOP mode, it will stop running.