On 7/14/05, Wouter van Ooijen wrote: > > So is a resonator more reliable than a crystal? > > It is 'know' to be more shock-resistant, and it includes the capacitors, > so that is one (or actually two?) things less to worry about. Absolutely. And much > cheaper too. The only catch is that a resonator is much less accurate: I > think 1% worst case, 0.5 typical. A crystal is more like 50 or 100 ppm. There is another problem you probably forgot it. The Q factor of the resonator circuit is much lower than with any crystal. This will gave usualy a lower oscilation amplitude at high frequency compared with the same frequency crystal oscillator. At high temperature the amplitude will be smaller, quite sufficient to stop the trigger connected on the oscout pin. I can't imagine a production of 100 of "something" with PICs without having an oscilloscope. Democratic technologies are a real mistery for me. :) best wishes, Vasile -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist