Jinx wrote: > Leaving me feeling a bit insecure. Because I find it hard to believe > that no one before me has tried and failed to use Vref+ on this PIC Maybe. Keep in mind this PIC has lot of bad history and most people deliberately avoid it. Then using a separate Vref is a further small subset. Generally using Vdd is good enough when a 10 bit A/D is good enough. I probably used Vref+ a few times out of 100 projects, but right now I can't even remember a specific project where I did. Are you really sure you can't use a 16F88? That's the mainstream part for this footprint with a A/D. ******************************************************************** Embed Inc, Littleton Massachusetts, http://www.embedinc.com/products (978) 742-9014. Gold level PIC consultants since 2000. -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist