AVR I/O during sleep/ power save mode

[MrEE]

Hello all,

I am working on a project using the ATMEGA165P. I'd like to use the Power sleep mode (or some other similar low power mode), but just before I enter power sleep, I need to set an I/O to high. The question is, would the output remain high during sleep?

 

[GreenGiant]

Looking at the datasheet it appears that it will preserve the state of it though it does not state that directly.

If you can I would say program one to just turn on a few pins and then go to sleep and see if they still read high.

 

[MrEE]

thanks for your reply. I've just started writing a simple test code. I'll post my results once I'm done..

 

[MrEE]

ok.. I just tested the sleep under the idle mode. The output pin driving an LED remains HI during sleep (verfied current consumption drops to what the LED needs) then I wake up by pulling INT0 low.