> What Olin is saying is that Microchip don't mention it do they? > I would not say a 16F628 oscillator is the same as a standard > CMOS clock circuit. Figure 14.2 of the 16F628 manual shows a resistor "RF" inside the chip, across Osc1 and Osc2. Unfortunately nothing else is said about it -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listserv@mitvma.mit.edu with SET PICList DIGEST in the body