I couldn't find answer for this simple question.
Does Due have pull-up resistor on its analog pins?
And can it be used as digital input just as Atmega board?
Your help is appreciated!
I believe every pin is usable for digital I/O identically. The PIO units should all be identical in
function on all the pins they control.
Note that the actual pads for various pins are different, so some have hysteresis, some
don't, some can only drive a few mA, some can drive rather more.