I have a design using the ATtiny1614 that needs to be always "on", but using as little (average) current as possible. I'd like it to be able to go to "sleep", minimizing power draw, waking up perhaps every 250mSec to quickly check an input to see if it is time to again power-up fully.
Is there a library to simplify getting it in and out of this "sleep" mode? Or do I need to spend time with the data sheet and work it out myself?
I see that, unlike the ATMega series, the ATtiny 0- and 1-Series parts all have a dedicated sleep controller, which should make this simpler. But I have yet to find a single code example showing exactly, step-by-step, how to properly enter and exit the Power-Down sleep mode, which is the one I need.
I'm sure I could make it work just from the datasheet, but I'm hoping someone has a working example, to save me time and hair-pulling...
It's an unfortunate truism I've observed here and elsewhere: The higher your post count, the less chance you have of getting help when you actually do ask a question 
Well, I did find my way to this:
http://www.technoblogy.com/show?2RA3
The code he provides at least gives me a good starting point. I'll have to put together a test board, and do some tinkering. It does appear the Sleep Control block in the ATtiny family makes this a lot more straight-forward than on the AtMegas.