[QUOTE=fnovau;48669]I begin a project with PIC16F677 and I should like to ask the experts of
this forum some questions.Here are some details of my application:
1-Pins RA0, RA1 and RA3 are free. If I use internal pull up resistor for
RA3/MCLR can I let this pin floating and save diode protection during programming?

Does anybody can answer or give me any hint about question 1?