Hi John, In your case the PIC16C63A is the master while the 1621 is the slave. But how do will I know or ensure that the master is clocking at 100kHz? Thanks, Nes >From: John Gerthoffer >Reply-To: pic microcontroller discussion list >To: PICLIST@MITVMA.MIT.EDU >Subject: Re: PIC I2C at Standard100kHz and Fastmode 400KHz >Date: Wed, 10 Nov 1999 09:31:31 -0500 > >I'm bit-banging a Dallas DS1621 faster than 100KHz (but much slower than >400 >KHz) from a PIC16C63A with no problems. > >I'm sure that if I try to talk to a 100KHz part, I'll have some then. ______________________________________________________ Get Your Private, Free Email at http://www.hotmail.com