In message <19970314.205554.11111.1.HaroldHallikainen@juno.com> PICLIST@MITVMA.MIT.EDU writes: > Does anyone have experience on using ceramic resonators with > built-in capacitors on the 16c74? We're using a 16 MHz resonator with > the oscillator in the HS mode and find that about 1/3 of the resonators > don't oscillate. Most resonator datasheets don't specify units to work > with the pic chips. > Any ideas appreciated! > Harold, I have been using them with no problems on a 16C73. However, I seem to remember a few weeks ago that someone (was it Myke) mentioned he was having problems with a 16C73A; something about the capacitance of the PIC osc pins being too high. Maybe someone can remember better than me ... Mike