My advice would be to use a 32.768kHz crystal connected to the timer 1 clock input. You can then use the timer 1 interrupt to decrement your countdown.
My advice would be to use a 32.768kHz crystal connected to the timer 1 clock input. You can then use the timer 1 interrupt to decrement your countdown.
"I think fish is nice, but then I think that rain is wet, so who am I to judge?" - Douglas Adams
Bookmarks