hello everyone. I need get code from a MC68HC705J2 and i don't know how do it. Please i would like learn, if not these any other. Thanks.
Maybe someone will pop in here with info, but I think you're looking in the wrong place. That's a totally different line of microcontrollers, completely unrelated to and incompatible with Arduino. You should probably ask in a forum dedicated to that architecture or line of MCUs. I don't think I've ever seen mention of that line of microcontrollers here...
At best, though, you'll get a hex file - so unless you can read MC68 machine language, that won't help you much...
DrAzzy:
At best, though, you'll get a hex file - so unless you can read MC68 machine language, that won't help you much...
Well of course you need a disassembler, but given that, it is pretty easy.
(OK, I spent a few years doing it a few decades ago. 
)
Apparently you need Freescale document BR735/D. If you can ever find that, you should be set to go.