Hello, I have a problem with a atmega328p used standalone with 3.3v and the 8MHz internal oscillator. I´m using the board setting “ATmega328 on a breadboard (8MHz internal clock)“ as available on the arduino homepage breadboard-1-6-x.zip . Powered with 5v the atmega works fine but with voltages un…

Atmega328p shutdown under 3.4v

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