Hello all, I'm trying to get a 20MHz crystal to work on my 16f684 PIC. I can=20 get a 14MHz crystal to work The odd thing is that there is enough stray=20 capacitance that I don't have to use any capacitors. I'm having the same=20 problem with a 16f690. Any ideas? Thanks, rich! --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .