Introduction
Author: Victor Berzan, Microchip Technology Inc. |
This technical brief describes how the Real-Time Counter (RTC) module works on tinyAVR® 0- and 1-series, megaAVR® 0-series and AVR® DA devices. It covers the following use cases:
- RTC Overflow
Interrupt:
Initialize the RTC, enable the overflow interrupt, and toggle an LED on each overflow.
- RTC Periodic
Interrupt:
Initialize the RTC PIT, enable the periodic interrupt, and toggle an LED on each periodic interrupt.
- RTC PIT Wake from
Sleep:
Initialize the RTC PIT, enable the periodic interrupt, configure device sleep mode, put CPU in Sleep, the PIT interrupt will wake the CPU.