Introduction

The STM32H7Rx/7Sx Nucleo-144 board based on the MB1737 reference board (order code NUCLEO-H7S3L8) provides an

affordable and flexible way for users to try out new concepts and build prototypes by choosing from the various combinations of

performance and power consumption features, provided by the STM32H7S3L8H6 microcontroller.

The ST Zio connector, which extends the ARDUINO

Uno V3 connectivity, and the ST morpho headers provide easy expansion

of the functionality of the STM32 Nucleo open development platform with a wide choice of specialized shields.

The STM32H7Rx/7Sx Nucleo-144 board does not require any separate probe as it integrates the STLINK-V3EC debugger/

programmer.

The STM32H7Rx/7Sx Nucleo-144 board comes with the STM32 comprehensive free software libraries and examples available

with the STM32Cube MCU Package.

Figure 1.

NUCLEO-H7S3L8 top view Figure 2. NUCLEO-H7S3L8 bottom view

Pictures are not contractual.

STM32H7Rx/7Sx Nucleo-144 board (MB1737)

UM3276

User manual

UM3276 - Rev 2 - January 2025

For further information contact your local STMicroelectronics sales office.

www.st.com

1 Features

• STM32H7S3L8H6 microcontroller based on the Arm

Cortex

‑M7 core, featuring 64 Kbytes of flash

memory and 620 Kbytes of SRAM in a TFBGA225 package

• 256‑Mbit Octo‑SPI flash memory

• USB Type-C

with USB 2.0 HS interface, dual‑role‑power (DRP)

• Three user LEDs

• RESET and USER push-buttons

• 24 MHz and 32.768 kHz crystal oscillators

• Board connectors:

–

USB Type-C

connector

– Ethernet RJ45 connector

– MIPI20 for debugging (SWD/JTAG/TRACE)

–

ST Zio expansion connector including ARDUINO

Uno V3

– ST morpho extension pin headers for full access to all STM32 I/Os

• Flexible power-supply options: ST-LINK USB V

BUS

, USB connector, or external sources

• On-board STLINK-V3EC debugger/programmer with USB re-enumeration capability: mass storage, Virtual

COM port, and debug port

• Comprehensive free software libraries and examples available with the STM32Cube MCU Package

• Support of a wide choice of Integrated Development Environments (IDEs) including IAR Embedded

Workbench

, MDK-ARM, and STM32CubeIDE

Note: Arm is a registered trademark of Arm Limited (or its subsidiaries) in the US and/or elsewhere.

UM3276

Features

UM3276 - Rev 2

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