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Peter Mather
Associate III
July 12, 2019
Solved

STM32H743: changes in 480MHz version?

  • July 12, 2019
  • 3 replies
  • 1868 views

Can someone please point me at a document that identifies any changes in the STM32H743 between the original 400MHz capable version and the latest 480MHz version

Thanks

This topic has been closed for replies.
Best answer by Tesla DeLorean

https://www.st.com/content/ccc/resource/technical/document/application_note/group1/95/22/7c/0c/57/de/4b/f9/DM00609692/files/DM00609692.pdf/jcr:content/translations/en.DM00609692.pdf

Most everyone has the Y step

The main thing for bring it up in 480 MHz is the selection of VOS0

And also some changes in the RCC bits related to HSI and CSI trim

3 replies

Uwe Bonnes
Chief
July 12, 2019

The recent H743 datasheet has a specification section for each version.

Singh.Harjit
Senior
July 17, 2019

​Take a look at application note: AN5312 - Migration from RevY to RevV for STM32H743/753 and STM32H750 Value line microcontrollers

Tesla DeLorean
Tesla DeLoreanBest answer
Guru
July 17, 2019

https://www.st.com/content/ccc/resource/technical/document/application_note/group1/95/22/7c/0c/57/de/4b/f9/DM00609692/files/DM00609692.pdf/jcr:content/translations/en.DM00609692.pdf

Most everyone has the Y step

The main thing for bring it up in 480 MHz is the selection of VOS0

And also some changes in the RCC bits related to HSI and CSI trim

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Robmar
Senior II
July 30, 2023

This is all a bit too cryptic, "selection of VOS0 and also some changes in the RCC bits related to HSI and CSI trim", that doesn't really help anyone get 480 MHz running does it.
Why are there no code examples of how to do this? I've been googling for half and how and nothing more than similar comments, is this a "magic club only" thing?

Robmar
Senior II
July 30, 2023

Found it at last!
So in the MX configurator to use 480MHz, go to Pinout & Configuration, click RCC then System Parameters,
Product revision then has to be set to Rev. V, and the the CSI and HSI values set to 32 and 64 respectively!
That really should be highlighted or prompted when creating a new project!
Even better if it was on the Clock configuration section too, where it belongs!, or at least a warning!