I just brought a PIC marked: PIC16F84A-20/P This implies a frequency of 20MHz but the data sheet I just down loaded specifies a max operating frequency of 10MHz for the 16F84. Do I have an old data sheet? Seth Fischer -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listserv@mitvma.mit.edu with SET PICList DIGEST in the body