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Topic: Possible bug in atmega2560 board lib, or errata for specific manufacturing run? (Read 866 times) previous topic - next topic


Hello All,

I started over here: https://github.com/MCUdude/MegaCore/issues/84 but it seems to either be a manufacturing problem or a board lib problem.

Essentially on the atmega2560, using the sample wake from sleep code here: https://playground.arduino.cc/Learning/ArduinoSleepCode

If you enable the internal pull-up resistor on whatever pin you're dealing with and try to use the FALLING edge to wake the micro, it will not wake, but if you use LOW it will.

Edit: I tested on two different chips with date codes:
16AU 1616
16AU 1726


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