STM32F4x9 dual bank on 1MByte devices

[jgoril2]

Posted on September 01, 2014 at 11:08

I cannot find some details about how this dual bank mode works. Can anybody make my questions clear?

If DB1M is enabled, does sectors numbering change also for WRP and/or PCROP protection setting? If DB1M is enabled, can 1MByte device boot from bank 2 (bit BFB2)? What will happen if DB1M will be enabled on device with different density (2MByte)? Thanks a lot for your help. Jozef #stm32f4 #flash-dual-bank

[Tesla DeLorean]

Posted on September 01, 2014 at 14:39

I've only ever seen One Bank 1MB devices, and Two Bank 2MB devices.

You might have to do some of your own experimentation, and review the System Loader ROM I would imagine that it would behave similarly to the Two Bank 2MB devices, that the sector numbering would be discontinuous, and the memory perhaps also.