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

April 26, 2017Halt modes run watchdog timer wdt

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

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The clock source of SPMC65 MCU WDT is gotten from the on-chip RC oscillation circuit. In the HALT mode, all the peripherals keep the original running state and run normally, except that only CPU stops for power saving; at this time WDT runs normally; in the STOP mode, on-chip RC oscillator stops working, CPU and all peripherals also stop. At this time whether WDT runs normally 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; if the watchdog is set to be disabled in the STOP mode, it will stop running.