> Ah, thanks. The claims on that data sheet are good enough that serial > comms without a crystal or resonator should be considered, unlike the > older chips that were not accurate enough for reliable guaranteed > operation. But I would consider it only when the other party does have a crystal, and even then only reluctantly. Wouter van Ooijen -- ------------------------------------------- Van Ooijen Technische Informatica: www.voti.nl consultancy, development, PICmicro products -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu