>>Can someone clarify the program memory for the pic12c5xx parts. The >>>Datasheet i downloaded specifies eprom memory but the rep with FAI >>>indicated it was eeprom memory a.k.a. 16c84. The data sheet makes no >>>mention of a windowed version for testing. The 12C5xx parts are EPROM based. The parts are essentially a 16C5x core with serial programming and a little more RAM. Windowed parts are available for prototyping. John Magrane Field Applications Engineer Bell Industries 408 734-8570