> 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. 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. Wouter van Ooijen -- ------------------------------------------- Van Ooijen Technische Informatica: www.voti.nl consultancy, development, PICmicro products docent Hogeschool van Utrecht: www.voti.nl/hvu -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist