vishnuksumithran
Newbie level 4
Is there any specific reason why all watchdog timers count down and not up ie from a initial value down to zero ??
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if countdown is used , then it will be easier for generating interrupt
in hardware module as rollover from all zeros to ones , (the underflow)
can be taken from the msbit.
otherwise , if countup is used you must have a comaparator also to compare and interrupt at the specified time.
countdown doesnot require a comparator. only the carrbit out of msb can be used for interrupt.
it is reduction in hardware , why countdown is used.