How to view the manual for HSE

HMsDobby2 · ‎2024-04-19

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 · ‎2024-04-19

Is this a follow-on from:

So you're talking about NUCLEO-H743ZI2 ?

@HMsDobby2 wrote:
Where is the X4 used?

You can see that in the schematics:

Also from the picture of the board:

@HMsDobby2 wrote:
I checked ... STM32H743xI/G datasheets, but couldn't find it.

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.

@HMsDobby2 wrote:
Plus, Is it correct that the MCO (default) from STLINK-V3E uses the X1 source?

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:

Andrew Neil · ‎2024-04-19