Hi, I have had a project using 16C84. I used the built-in EEPROM, too. As I changed to 16F84, I was surprised because of the write for the EEPROM cell #0 produced no result. Any other cells, etc. were ok. I used the correct addressing scheme, no dirty bits. Have anyone ever seen that? Imre On Tue, 16 Jun 1998, David Tait wrote: > > >Does anyone know _ALL_ (maybe you, Jim ...) the differences between those > > >two ? I would like to know also ... > > > > You know them all now. 16F84 different "better" code protection, more ram, > > reversed pwrte, cheaper! (same technology.) > > There are few more differences described in Appendix E of the 16F84 > data sheet. > > David > >