I have an ATmega328 with DS1307 clock and 4x7-segment display on a project board. It's powered by 3xAA batteries. I'm going to run it until the power is drained and wondered what behavior I might expect when power gets low? Will the '328 simply shutdown, or maybe bad data, scrambled display, or som…

What can I expect from my ATmega328 when the batteries run down?

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