Quote Originally Posted by mpgmike View Post
It just occurred to me that the really old PIC16F chips have an issue with the Vpp/MCLR voltage. As I recall, putting a 100 ohm resistor between the Vpp pin and the PICKit3 was a work-around.
I have MCLR_OFF and using all of porta as outputs. MCLR has always confused me so simply, what should I be doing?
I have some 16F1847 coming today, so that's the chip I'll be using (same pinout as 16F88).

I need to get these things set up right for the peace of mind nothing in configuration is an issue. Also, new pickit3 coming today.

So, do I simply tie a 100 ohm to Vdd? Designate MCLR_ON? Do I set up the MCLR pin as an input?

You guys will have to forgive me but I'm an occasional user and all these setup details I don't retain.