Testing in SLEEP_MODE_PWR_DOWN:All pins as outputs, and LOW: 0.35 µA (same as before).All pins as outputs, and HIGH: 1.86 µA.All pins as inputs, and LOW (in other words, internal pull-ups disabled): 0.35 µA (same as before).All pins as inputs, and HIGH (in other words, internal pull-ups enabled): 1.25 µA.
wSo it seems like a good practice to set all unused pins to low.
Or do nothing, as they default to inputs ?
So the point is to not let the pins be in a floating state?
What doesn't make sense to me...