2 docs tagged with "rtc"

Every other peripheral in this folder lives in your power domain, stops when you stop, and forgets everything when the supply goes away. The RTC does not. It is a small independent machine in a separate power domain with its own oscillator, its own supply pin, and its own reset — and the only things it shares with the rest of the chip are a bus interface and a couple of locks that exist specifically to stop your code from disturbing it by accident.

Every page so far in this folder has been about what happens once the core decides to sleep. This one is about the decision that matters more than any of them 90 ms of idle Run mode cost roughly two orders of magnitude more than the same 90 ms in Stop.