Im new in PIC world. I want to ask:
Do I need external pullup resistor for switches and encoders?
When I was using Atmel microcontrollers - I was just turning on internal pullup resistors in software.
In PIC18F25k50 datasheet I found information, that RB port pins are:
"Digital Output or Input with internal pull-up option"
So I assume that some ports may have internal pullups and I have to check datasheet. However I don't know what resistance is there and I can't find it in datasheet.
I'm asking because in many tutorials I see external pullups, so there must be some reason...