I do not we ware talking about external EEPROM. my understanding was internal Data EEPROM. Andre -----Original Message----- From: piclist-bounces@mit.edu [mailto:piclist-bounces@mit.edu]On Behalf Of Alan B. Pearce Sent: Friday, March 09, 2007 12:47 AM To: Microcontroller discussion list - Public. Subject: Re: [PIC]: EEPROM pre-setting directives > I use ICD2 without enabling "Preserve EEPROM on Program" > I couldn't program EEPROM Data. Do you use ICD2? > How do you program EEPROM data? Some of the small chips use an I2C interface to the EEPROM, and this cannot transfer data from the programmer, it has to be done under program control. Just what chip are you attempting to program? -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist