Roland, Fantastic help! I have been surfing like mad since I received the chips and didn't find a lot to help me. I have spent far too much time re-inventing the wheel on this one, so your help is very much appreciated. The PCWH Compiler has I2C functions built in, but I was having difficulty setting/reading the clock. The attachments have all the info I need, so I will hopefully get this gpoing tonight. Again thank you. Jim -----Original Message----- From: pic microcontroller discussion list [mailto:PICLIST@MITVMA.MIT.EDU]On Behalf Of Roland Sent: 24 February 2004 19:06 To: PICLIST@MITVMA.MIT.EDU Subject: Re: [PIC:] Philips PCF8753 (I2C) RTC on 16F877A (problems with) Ok, try again, same source, Julian Winpenny(is he on this list?), this time on the F877 -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listserv@mitvma.mit.edu with SET PICList DIGEST in the body