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What is the operating voltage of Atmega32U4?

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What is the operating voltage of Atmega32U4?

(a) 12V to 9V

(b) 1.9V to 5V

(c) 1.8V to 5.5V

(d) 2.7V to 5.5V

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This interesting question is from Microcontroller Specifications in division AtMega Microcontroller Specifications of Arduino

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Correct answer is (d) 2.7V to 5.5V

Best explanation: The operating voltage of the Atmega32U4 is 2.7V to 5.5V. Provide any voltage lower than that and the chip will not function. But however, if any voltage higher than the rated voltage is provided there is a chance of damaging the IC physically. So, under no circumstance should this chip be provided a voltage more than the rated voltage.

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