I've seen a lot of people in need of more *free* information on MultiMediaCards in their PIC-to-MultiMediaCard projects. Besides the good MultiMediaCard documentation available at Sandisk's web site (which has been mentioned and discussed here in the past), Renesas has some good information as well: http://www.renesas.com/avs/resource/japan/eng/pdf/flashcard/e603002_mmc.pdf Enjoy, Ken Pergola P.S. URL may get word-wrapped, so some finagling might be necessary. -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads