STM32H7 Nucleo-144 boards (MB1364) for programming external board

[Rflor]

Hi, I'm using ST for the first time, I have a NUCLEO-H753ZI, and I cant find in the user manual if it is possible to program an external MCU using the Embedded STLINK-V3E, can someone help me with this ?

Thanks

[TDK]

It's technically possible, but not really intended and isn't easy to do. It would be better to use a standalone programmer.

[Rflor]

what do I need? if separate the jtag/swd signals from the on board MCU and connect them to the external MCU it could wokr?

[TDK]

Yes. Connect GND, SWDIO, SWCLK at a minimum. Disconnect them from the on-board MCU. Download the schematic from the nucleo board product page under CAD resources to see where these traces go.

[Rflor]

Thanks for your help, I will try it