Externally clocking (and overclocking) AVR MCUs

https://www.electronics-lab.com/externally-clocking-and-overclocking-avr-mcus/

by nerdralph.blogspot.ca: People familiar with AVR boards such as Arduinos likely know most AVR MCUs can be clocked from an external crystal connected to 2 of the pins. When the AVR does not need to run at a precise clock frequency, it is also common to clock them from the internal 8Mhz oscillator. Before CPUs were […]