I am experimenting with AVR (ATMEGA 88PA) and wonder why a specific scenario occurs. I have a pin set as input and I have enabled internal pull up resistor. However, if I connect an led (anode to pin and cathode to ground), I see it is lit. So it seems internal pull up sinks current. Is it true?
Joined: Sun. Aug 10, 2014
Posts: 22 View posts
Last Edited: Tue. Jul 14, 2020 - 03:09 PM