Hello Jean, in my opinion it should definetly be possible to do. Nobody has done it so far doesn't mean that it's impossible. You would have to think about a address for you slave and then implement the i2c protocol, which should be perfectly document by the inventor philips. Greets, Stefan JS> Hello all JS> I've just joined the piclist, and i'm now starting with my first (stupid ?) JS> question. JS> Is there any existing routines for running a 16f84 as an i2c slave ? JS> If not, does it mean it's impossible to do ? JS> Thank for your help. JS> -- JS> Jean Schwoerer JS> -- JS> http://www.piclist.com hint: PICList Posts must start with ONE topic: JS> [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads