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svsv
Associate
March 30, 2026
Question

NUCLEO-H743ZI2 documentation

  • March 30, 2026
  • 2 replies
  • 364 views

Hello everyone!

I'm new to the NUCLEO-H743ZI2 board. I need help with two questions:

1) I can't find a description of the STLK backup port -CN2 anywhere. Can you tell me if I can use it to program other STM32 devices on other boards, and how?

2) Can anyone share the schematic for the H743ZI2 board?

 

2 replies

TDK
TDK
Super User
March 30, 2026

You cannot use the NUCLEO-H743ZI2 as a programmer to program other boards, only the chip on the board itself.

The schematic is available on the board page, under CAD resources:

https://www.st.com/resource/en/schematic_pack/mb1364-h743zi-e01_schematic.pdf

 

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    S
    svsvAuthor
    Associate
    March 30, 2026

    Thank you so much for your tips and kindness!

    But how can it be used on a board?

    Andrew Neil
    Andrew Neil
    Super User
    March 30, 2026

    See the User Manual for the board - available on the 'Documentation' tab of the Product Page:

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

     

    Note also that this board is marked as Obsolete.

    A complex system that works is invariably found to have evolved from a simple system that worked.A complex system designed from scratch never works and cannot be patched up to make it work.
      Andrew Neil
      Andrew Neil
      Super User
      March 30, 2026
      @svsv wrote:

      I'm new to the NUCLEO-H743ZI2 board.

      Do you have experience with any other ST Board(s)? Or with microcontrollers in general?

      This is one of the more advanced Nucleo boards - perhaps it would be better to start on something simpler?

       

      Again, note that this particular board is marked as Obsolete.

      A complex system that works is invariably found to have evolved from a simple system that worked.A complex system designed from scratch never works and cannot be patched up to make it work.
      S
      svsvAuthor
      Associate
      March 30, 2026

      Formatted for readability - p.a

      Thank you very much for your time and reply—very helpful answers. As for me, yes, I have other, simpler boards like the F0, F1, and H7. It's just difficult to communicate through a translator. I'm just starting out and I really like environments like the ARDUINO IDE and PFLPROG (I really liked the graphical one). Since this large board has such an advanced STLINK V3, I thought maybe I could use a programmer on it to upload sketches to the smaller boards. The presence of the CN2 connector on the board also bothered me—it's supposedly there, so why is it there?

       

      Andrew Neil
      Andrew Neil
      Super User
      March 31, 2026
      @svsv wrote:

      The presence of the CN2 connector on the board also bothered me—it's supposedly there, so why is it there?

      Already answered here.

      A complex system that works is invariably found to have evolved from a simple system that worked.A complex system designed from scratch never works and cannot be patched up to make it work.
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