This should not happen, except for MCUs with a nominal internal reference voltage different from 1100 mV (e.g., ATtiny26, ATmega8, ATmega16, ATmega32, and ATmega8535). It may happen, if you do not connect AVcc and Vcc (e.g., on a ATtinyX61 and ATtinyX7). The most likely reason is...
For example the ATMega32U2. Unfortunately you can’t plug this chip into a breadboard. But I’ve made a complete tutorial on how to build a circuit with it. It’s more for those beyond the very beginner stage, but if you’re curious check it out: https://www.build-electronic-circuits...
Porting from Atmega128 to Atmega32, RTC and EEPROM Nov 14, 2012Programming the ATmega128 - San Jose State …Programming the ATmega128 B. Furman 12FEB2007. ... Program can specify a pin to be high (V TG) ... Grabs all eight logic levels at the same timeHow t...
This should not happen, except for MCUs with a nominal internal reference voltage different from 1100 mV (e.g., ATtiny26, ATmega8, ATmega16, ATmega32, and ATmega8535). It may happen, if you do not connect AVcc and Vcc (e.g., on a ATtinyX61 and ATtinyX7). The most likely reason is...