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watchdog timer

arjun pal

Hi all
i need watchdog timer example for 89C51RD2,so that code execution can start
from beginning
regards.
arjun
arjun_ram_pal@rediffmail.com

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  • 0 in reply to arjun pal

    you got it right re the P89.. . Re the t89... I do not know, just know from a check a while ago that the chips are similar, not identical.

    I do not actually know if the p89 requires this, but as a carryover from a former chip that did, I always disable interrupts before the 2 writes and reenable afterwards. This guarantees that the two writes are consequtive and even if the p89 should not require it, the code becomes portable to a chip that does.

    Erik

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  • 0 in reply to arjun pal

    you got it right re the P89.. . Re the t89... I do not know, just know from a check a while ago that the chips are similar, not identical.

    I do not actually know if the p89 requires this, but as a carryover from a former chip that did, I always disable interrupts before the 2 writes and reenable afterwards. This guarantees that the two writes are consequtive and even if the p89 should not require it, the code becomes portable to a chip that does.

    Erik

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