From: "Peter Lima" > Last week i had a strange experience with a New batch of 16C63 chips > I would like to here from some users if they had the same problem. > I have operating in 80+ circuit boards 10 Meg 16C63 with 4.982 crystals > All of them programed with MPLAB 3.14 and the configuration bit set to > XT Just a thought, are the crystals in the new boards the same cut, load capacitance, etc. as the earlier ones? Have you tried one of the new PICs in an old board? .