Hi Robert, I'm just a little confused here. If I understand you correctly, you mentioned there are two versions of app note AN734. From what I've been accustom to, Microchip denotes their document revisions with a letter suffix on their document number. The only document # I can find on AN734 is '00734A' which would indicate that this is the first and only version to date. If there are two versions, I'd like to compare the two, but I can only find one published version: Title: Using the PICmicro SSP for Slave I2C Communication Name: AN734 Date: 08/07/2000 Author: Stephen Bowling Document #: 00734A Could you or someone shed light on this? Thank you kindly. Best regards, Ken Pergola -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads