How to view the manual for HSE

[HMsDobby2]

Hello,

I purchased a soldering crystal for X3 according to the BOM list,

but it seems that the X4 on the board is the same product.

Where is the X4 used?

I checked UM2407 User Manual and STM32H742xI/G, STM32H743xI/G datasheets,

but couldn't find it.

 

Plus, Is it correct that the MCO (default) from STLINK-V3E uses the X1 source?

 

Thank you.

[Andrew Neil]

Is this a follow-on from:

https://community.st.com/t5/stm32-mcus-products/setting-up-hse-on-nucleo-h743zi2-development-board/td-p/662554

So you're talking about NUCLEO-H743ZI2 ?

 

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@HMsDobby2 wrote:

Where is the X4 used?

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You can  see that in the schematics:

 

Also from the picture of the board:

 

 

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@HMsDobby2 wrote:

I checked ... STM32H743xI/G datasheets, but couldn't find it.

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It wouldn't be in the chip datasheet because it's not part of the chip - it's external.
It's beyond the scope of a chip datasheet.

 

 

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@HMsDobby2 wrote:

Plus, Is it correct that the MCO (default) from STLINK-V3E uses the X1 source?

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Again, see the board schematics:

(so, actually, it's not just a crystal - it's an oscillator).

 

Also, from that board picture, X1 is adjacent to the ST-Link chip - so it will be the crystal (rather, the clock source) for that chip:

 

You can download the schematics from the 'CAD Resources' tab on the Product Page:

https://www.st.com/en/evaluation-tools/nucleo-h743zi.html#cad-resources