NUCLEO-H5E5ZJ — Redrawing the Schematics as a GPIO View

[rich.g.williams]

 

I have redrawn the NUCLEO-H5E5ZJ schematic as a personal exercise in understanding the architecture of the board and the STM32H5E5. I have consolidated the original multi-sheet design into a main STM32H5E5 schematic and a separate STLINK schematic, using port objects to make the principal interconnections explicit. During the redraw, I cross-checked the connectivity against ST's original Altium design files and the more recent PDF schematics.

My aim was to show the MCU GPIO ports rather than their alternate functions, as I found this gave me a different picture of how the MCU is connected to the board. The exercise also revealed just how much functionality is exposed by the NUCLEO-H5E5ZJ PCB: the usefulness of the M.2 Key A socket, the extensive possibilities offered by the other headers, and, in particular, the surprisingly large number of MCU GPIOs that are brought out to them and are available.

I have a great deal of respect for the NUCLEO-H5E5ZJ PCB and for the STM32H5E5. The capabilities and functionality provided by this device are considerably beyond anything I have previously encountered in a microcontroller.

I am posting the two PDF schematics here in the hope that other engineers may find them useful. They are the most recent versions as of 4 September 2026.

Richard Williams