Can Stm32f103ret6 replace Stm32f105rbt6 with no programming changes

[ax369]

We did many projects using Stm32f105rbt6. Stm32f103ret6 now is cheaper with more memory and the pinout is the same. Can we use Stm32f103ret6 directly without any programming changes?

[STOne-32]

Dear @ax369 ,

The major difference is USB peripheral that is not compatible and should change the software and so some Clocks settings at system level . Then the migration is straightforward and easy between parts especially on the Flash and memories .

Hope it helps you.

STOne-32

[ax369]

Thank you. Can you please point me to where I can find exactly what to change to the software so that it’s compatible with both?