> The program code is in the program memory of the chip. Only > the flash memory > is subsituted by an external memory So you suggest to use an OTP chip instead of a flash? Maybe nice for production, but not very appropriate for development work.... Wouter van Ooijen -- ------------------------------------ http://www.voti.nl PICmicro chips, programmers, consulting -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics