Device is ATTINY_13. I don't see anything in the data sheet about this (looking in the wrong places?). I need a pullup (internal or external) on an INT pin for wakeup. Thanks.
Last Edited: Fri. Jan 12, 2018 - 10:33 PM
Does an enabled internal pullup remain active in power-down sleep mode?
Author
Message
Yes, ..... show me in the DS where it does not!
Edit: Posted wrong image (should be):
Last Edited: Fri. Jan 12, 2018 - 08:27 PM
The port registers are not changed by the cpu entering sleep mode, so they will stay in what ever configuration they were in when the cpu enters sleep (cpu clock stopped),
port bits will be high/low, and pullup enabled/disabled as before. Reset as pointed out above will change their state back to initial values.......
Have fun.
Jim
This reply has been marked as the solution. #5
Great, thanks for the confirmation.