"Lonnie M. Utt, Jr" wrote > I recently did a project that started out with a 71 and migrated to > the 711. When it was in beta testing, I had 30 bytes of rom left and > no ram. I wanted to add some additional RAM locations for something, > so I thought the logical choice would be the PIC16C711. I ordered 20 > units for the final version, thinking they would be fine. They were > the same price as the 71's. I also ordered a windowed unit to test > with. I use the Microchip PICSTART-16B1 on the project bench. When I > programmed the windowed part, everything worked well. When I tried to > program the One Time Programmable units , I would get a write fault. I > had one of the MicroEngineering programmers that I use in the field. > It programmed all parts fine. Never could get an answer from Microchip > about this. Haven't had another run-in with the part. Now you got me real nervous. I'm doing exactly the same thing that you did. I developed on PIC16C71JW's and have just ordered 20 OTP 16C711s and one window version. It will arive here anyday now. I just hope my Picstart Plus programmer will have less problems with it than your Picstart 16B gave you with the 16C711s. At least there is also the following consilation by Kurt Kuhlmann : > The 711 may be programmed as if it were a 16C621 with an older > programmer. The EPROM space and config word have identical > addressing. Many thanks to both of you for your comments. Hopefully my fears are unfouned and the 16C71 will work first time. :) Rgds Werner -- Werner Terreblanche Tel +27 21 7102251 Fax +27 21 721278 wterreb@plessey.co.za (work) OR werner@aztec.co.za (home) Plessey SA, PO Box 30451, Tokai 7966, Cape Town, South Africa