Migrate from STM32H743 to STM32HA3

[DanF]

I have a project using a STM32H743 (LQFP144). I want to migrate it to a STM32HA3. It seems like it should be fairly pin compatible, but in Stm32CubeMX when I use the Alt-L (Pinout Compatible) option, the STM32HA3 isn't there.

Is this a lag in the CubeMX software update or is the device really not pin compatible?

CubeMX Ver 6.8.1.

Thanks for your help!

Dan

[AScha.3]

i did it ... just some points are not same:

• i set 200M clock, so both can do it
• use SDMMC , that have same pins on both
• also ADC ... only use, what both can do on same pins with same ADC
• control USB, CAN etc. is on same pins
• so its not 100% pin compatible, but with some care - working fine on same board
• H7A3 , H733, H743 . but need separate project and compile run.

[Tesla DeLorean]

Some QUADSPI/OCTOSPI and AF mapping differences

[DanF]

Thanks for the reply. So did you do any type of migration using STCubeMX or just manually remap pins and recompile?

[AScha.3]

no migration (i would not trust...) .

just make same pinout on other chip (after cross checking ! ) and generate code...then import your code from old project , compile and it runs.

also look not to use RAM or flash area (block size is not same ! ) that not exist in new target.

also set : power regulator scale to lowest possible (not same ! ) for long life of chip.