Why is the clock config error?

[Junde]

Hi, when I use the cubemx to config the stm32h743iit6 project, the clock system shows some error as below. But I try it on another PC, and the same config can work well.

I don't know why?

[Foued_KH · Accepted solution]

Hello @Junde​ ,

For the STM32H743 , we have 3 revisions : V , Y and X. (errata sheet)

Use silicon revision V devices to reach a maximum frequency of 480 MHz.

Please make sure which revision you have and you can refer to :

• To get 480 MHz, go to the RCC parameters and check that the product revision is "V".
• For some reason the default is "Y".
• Then set the power regulator voltage scale to 0.

Foued

[Junde]

@KHALSI_Foued​ 

Thanks for your reply.

As per your description, there are different revisions on RCC config page(but just rev.Y and rev.V, NO rev.X).

And I want to know how to make sure which revision the chip I have is.

Just see the silk print on the chip surface?​

[Foued_KH]

Yes, you can just look at your MCU.

Or try to connect your board to the STM32CubeProgrammer.

Foued