Hi. I need to implemet a serial number (to be stored on 12CE518 EEPROM) for my app. but I'm not sure if I can use this micro because I need to burn the e2prom serial number in programming mode *after* program code has been downloaded (ISP/OTP device). So I'm not sure whether 12CE518 16byte EEPROM memory can be accessed independently of program code in programming mode (program code previosly burned). I know that this can be done with some 16Cxx and 16Fxx mcus but in this case the EEPROM is poorly integrated to the mcu architecture. Besides I read this note on 12CE67X EPROM Memory Programming Specification / Page 2 (I couldn't find this note on 12CE518 datasheet) Note 2: Due to the secure nature of the on-board EEPROM memory in the PIC12CE673/674, it can be accessed only by the user program. I can't believe the lazy way Microchip *added* EEPROM memory to their 8 pin mcus. Due to the secure nature???!!!! Come on!!!! So long! ------------------------------------ netQ http://virtuaweb.com/picprog "Home of amateur PIC programmers..." -----BEGIN PGP PUBLIC KEY BLOCK----- Version: 2.6.2 mQCNAzV38BkAAAEEALfWv9j3f+tZ+z2IW+2o9Ebx4bUGnHjHPqIe0a6yVKawaeV/ Y4I6L2/A0ddbVMG8+qJ0MvHNkr3DzYkpW+hTl9zAzXkKBdZ3GA5bbvot7entl/O2 YDtRWUV730koxBo5iFFUbJH5kbmkox+h3znj34zPnZNWzNaqOAwol3wABfBNAAUT tBxOZXRRIDxuZXRxdWFrZUBpbm5vY2VudC5jb20+ =0bVU -----END PGP PUBLIC KEY BLOCK-----