On Wed, 23 May 2012, zipwize@comcast.net wrote: > I was not aware that the EEPROM was susceptable to being erased or > modified by low Vdd. It isn't. What happens is that the program counter can take on a random value which causes your EEPROM write routine to be executed unexpectedly. -- John W. Temples, III --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .