Technoblogy shows how to use the AVR Event System to make buffers or inverters in the DA, DB, DD, EA, or EB series microcontrollers, and gives some practical examples, such as a simple Blink application.

If you’re designing a project based on an AVR processor and you find you need a few buffers or inverters, one option would be to add a CMOS gate package to your circuit. However, as I found in a recent project, you can often solve the application without any extra components by using the AVR Event System.

The Event System is an under-appreciated aspect of the AVR microcontrollers, probably because it’s a bit unintuitive to use. Although this article only covers simple applications, using buffers or inverters, it should be helpful in understanding how to use the Event System to interconnect other peripherals in the processor.

Check out the how-to in the post here.