Hi

I have some simple code I wrote and debugged for a 16F84. It only uses 4 pins.
I was wondering what changes I would have to make to use a 12C509?

This chip is much cheaper and I don't need the 16F84's 13 i/o lines or the
flash. I see the eprom specs for the 12C509 is 1Kx12 vs 1Kx14 for the 16F84.
Does that change the way code is written?

Jon