MC9S12DT256 memory copy

[Neo_zhang]

My target MCU  is MC9S12DT256, my old one is fail, I want copy its content to a new one. Which part shall I copy, does 0x000 - 0x3FF registers region and 0x1000 - 0x3FFF RAM matter(it seems cannot erase and PGM directly by loading the .s19 file), we need to take them into consideration or not?

[lama · Accepted solution]

Hi,

the S19 record is stored only in the P-Flash memory.

Of course you can have something also in the EEPROM memory but it depends on your application whether the EEPROM was also loaded with some code.

However, usually...almost 100% of projects have entire code placed in the Flash memory.

RAM and registers are not important because registers have their reset status and RAM is RAM.

Best regards,

Ladislav