I use twrk60f120m tower board as development board currently. My product PCB board will use MK60FX512 processor. My PCB board doesn't have any external memory. My application needs to store some data to non-volatile memory. Whenever PCB is powered up, the application program will copy this data from non-volatile memory to RAM. This data can be updated by user through network or serial port. It doesn't need to be in file system. So ROM is not good for this purpose, while internal NOR flash memory is good. My application doesn't need entire internal NOR flash memory space. I think the top of internal NOR flash memory maybe configured as RW data segment. How to modify LCF file to do this?