Chris A wrote... >A few day ago I read that the 877 can only be programmed=20 >1000 times. Is this correct? The uChip material led me=20 >to beleived I had a much longer TBF. The PIC16F877 Data Sheet, in the Electrical Characteristics section, states that the Data EEPROM is rated for a minimum of 100000 erase/write cycles, and the Program FLASH for a minimum of 1000 erase/write cycles (parameters D120 and D130, respectively). Dave -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.