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pike said:i think that you can do it with software. My only guess is to make software that resets the fuses but keeps the data in. But of course this can only be done with the "f" type chips, since they are flashable.
evandude said:microchip is obligated to make their chips secure, otherwise companies making products wouldn't buy their microcontrollers, if they weren't secure... I'm sure that as a built-in hardware function, any time you change the fuses, you erase the program or something like that.
Nigel Goodwin said:evandude said:microchip is obligated to make their chips secure, otherwise companies making products wouldn't buy their microcontrollers, if they weren't secure... I'm sure that as a built-in hardware function, any time you change the fuses, you erase the program or something like that.
If you are using an UV eraseable PIC you must not EVER! set the erase protection bit, setting it prevents the chip from ever being erased again.