andre abelian wrote: > How did you start calculating it or > How did you come up with 4.9152 mhz As I understand things, there *is* a reason the 4.9152 Mhz crystals exists at all. The same is true about the 32.768 Khz "watch crystals", why not just make them 32.000 Khz or 33.000 Khz ? (Don't answer ! :-) ) You don't have to calculate *that* much, someone else has already done that for you. Jan-Erik. -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics