Hi Rob,

Thanks for yor reply, I haven't decided on which chipset to use yet. It all comes down to cost. (500 chips in total for this project)

I would prefer to use the 14 Pin 16F630 which gives me more I/Os but cost wise a may end up using the 8 Pin 12F629.

The Electrical specs for both chips are much the same.

I will probably use the resistive divider and use the 16F630.

Cheers