I came across this low cost Serial I/O Real Time clock, but I don't have the data sheets for it. Can anyone give me a brief overview of how you interface to it. (e.g, is it like the Panasonic 4 pin or the Dallas 3 pin or something entirely different.) Thanks, Alan G. Smith +--------------------------------------------------------- | Alan G. Smith | ags@poboxes.com | http://www.innovatus.com/ags