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89c669 Watchdog Timer

abacus eng

Can anyone tell me how to enable watchdog timer in 89c669 microcontroller from NXP?

Parents
  • 0 in reply to Tamir Michael

    Yes it is mentioned in the data sheet but not very clearly. I used this code:

    CCAPM4 = 0x4C;
    CCAP4L = 0xFF;
    CCAP4H = 0xFF;
    CMOD = CMOD | 0x40;

    to activate the watchdog and it also enables the WDTE but when i debug in keil the watchdog timer does not starts its count down. The watchdog timer also shows OFF.

Reply
  • 0 in reply to Tamir Michael

    Yes it is mentioned in the data sheet but not very clearly. I used this code:

    CCAPM4 = 0x4C;
    CCAP4L = 0xFF;
    CCAP4H = 0xFF;
    CMOD = CMOD | 0x40;

    to activate the watchdog and it also enables the WDTE but when i debug in keil the watchdog timer does not starts its count down. The watchdog timer also shows OFF.

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