I need to replace a STM32F051 with one that has two DACs. As close to drop in replacement as possible. Are there any tool to make that decision?

[Timo Eggers]

Bonus question: If I use an STM32F07x can I use the same compliled software on both?

[Tesla DeLorean]

I've always used Adobe Reader.

If this is a commercial project you can probably get an FAE to work with you on part selection.

Use the Customize Table option to drill down on critical parameters

https://www.st.com/en/microcontrollers/stm32f0x1.html?querycriteria=productId=LN7

To run the same code really needs a close family member, where registers/peripherals share common mappings and addresses. The parts should have a DEV_ID value in the DBGMCU registers, this and FLASH size parameter, should allow you to identify what your code is running on and act dynamically. I've use such methods to determine which F4-DISCO board is running and pick optimal clocks appropriately. ie F407, F401, F446, F411, etc

https://www.st.com/content/ccc/resource/technical/document/reference_manual/c2/f8/8a/f2/18/e6/43/96/DM00031936.pdf/files/DM00031936.pdf/jcr:content/translations/en.DM00031936.pdf

[T J]

the F072 is likely your best chance... F091 is the next one to check

you can check your PCB in the Cube...