Folks, May I ask you a simple question? May I use P0 port as the I/O(with the pull-up resistors) and address line (address coming out before the pull-up resistors) at the same time? Thank you.
May I use P0 port as the I/O(with the pull-up resistors) and address line (address coming out before the pull-up resistors) at the same time? No. You can use the same port for both usages if you design your board accordingly. But not both at the same time.