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Watchdog reset on AT89S53

Andy Fryer

Hi,
Just wondering if anyone knows how I can distinquish between a power on reset and watchdog reset using a AT89S53 chip.
Cheers,
Andy

  • 0

    Hi,
    There is a POF bit, this bit can be used to know if its a POR or a watchdog timer reset.

    All S series uC of Atmel have this POF bit.
    Check the data sheet for more details.

    If you still have doubts, you can get back to me.

    Rgds
    Raj Shetgar