Use STM32H7 CRC peripheral on Flash memory (instead of Flash CRC)

[Gpeti]

The STM32H753 has 2 CRCs. One global CRC and one specific for Flash memory.

I think it is possible to use the global CRC for flash memory right ? The benefit would be to use a different polynom than the one from Flash CRC.

is it possible to have an idea of the performance loss @ 400MHz CPU clock. I know it depends on many factors, I just want to know if it's twice slower, 10 times slower...

[Tesla DeLorean · Accepted solution]

I think the FLASH CRC had issues.

The CRC peripheral has a bus transaction, so I'd expect it to be several times slower.

Things that should be easy enough to benchmark for speed or throughput..

[Gpeti]

Thank you for the reminder of the Flash CRC issue. The errata sheet indeed advices to not use it...