>...it's definitely got MC705K1CP written on the > top of it. The suffix is the package type. The "CP" part is probably a ceramic pack DIP with a window for UV erasing. The MC705K1(P) documentation Joe suggested should be more than adequate and probably covers the windowed part in a footnote. Win Wiencke -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu