Did you mean 16F684?You wrote 16F648.I am actually about to use this 14 pin chip and it does indeed have an A/D on it.What Dwayne suggests has been a reality for me as well : don't for get to include in your compiling somewhere the option -p16F684 to distinguish this chip from the default.I thought I had the PDF on that.Will get it cause I need it anyway and find which adcon you have