Ken Pergola said: > For the PIC18F452 only, use the 'silicon revision to errata doc' > translation table below. > If you don't know how to get the PIC18F452's silicon revision, just read > the DEVID1 register in the PIC18F452 -- the revision number is > represented in the lower 5 bits of the DEVID1 register (DEVID1: BYTE > ADDRESS 3FFFFEh). > 0x7 = C0 > 0x6 = B5 > 0x5 = B4 > 0x4 = B3 > 0x3 = B2 Thank goodness it's so simple, and not something horribly complicated like having the rev number printed on the chip. Microchip having growing pains? -Bob -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads