Using Internal Flash as Eprom at External Flash Application

[Muharrem]

Hello.

I have a custom board with STM32F750 MCU which has 64KB Internal Flash. Since the MCU's internal Flash is very limited i added external flash to board. I developed 2 different projects for Internal and External Flash. Internal Project starts with Internal Flash address. It omly includes Memory mapped init and jump codes to external Flash. External Flash Project starts with External Flash address(0x90000000). Application code stores in here.

I need r/w internal or external flash's one page or sector as a eeprom. As i know, i can't write data to external memory because it is memory mapped. Can the application code(which stored at Ext Flash), write and read internal flash?

[TDK]

> Can the application code(which stored at Ext Flash), write and read internal flash?

Yes. Application code can read/write flash, doesn't matter where it's at.