Yes, you can if you implement the programming algorithm and if the destinat= ion PIC has not enabled the eeprom protection. I mean, as a programmer can read the contents of the program memory, eeprom= and configuration bits (if they are not protected) , then a pic can do the= same. You can recall the same algorithm as a programmer, but of course th= e destination device will 'reset'. On the other hand is that you implement a custom communication between the = 2 pics, so the destination pic can know that the master pic wants to know t= he eeprom contents. Best Regards Gisli escribi=F3: = Does anybody know if or how one can access the EEPROM of one PIC via another PIC? My problem is this: I use the EEPROM to access some configuration bytes when booting up. However I would like to change these configuration bytes without reprogramming the PIC, f.ex. by writing to the EEPROM with another PIC (which will be put into a handheld unit with LCD). Is this possible and if so does anybody know how I can achieve this? -- View this message in context: http://www.nabble.com/Using-PIC-to-write-to-t= he-EEPROM-of-another-PIC-t1272979.html#a3379261 Sent from the MicroControllers - PIC forum at Nabble.com. -- = http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist = --------------------------------- Hor=F3scopos, Salud y belleza, Chistes, Consejos de amor. El contenido m=E1s divertido para tu celular est=E1 en Yahoo! M=F3vil -- = http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist