STMicroelectronics NUCLEO-H743ZI2

Overview

NUCLEO-H743ZI2 from STMicroelectronics is an STM32 Nucleo-144 development board built around the STM32H743ZIT6 microcontroller (Arm Cortex-M7 @ 480 MHz, 2 MB Flash, 1 MB RAM), featuring Ethernet connectivity, USB OTG Full-Speed via Micro-AB connector, ST Zio expansion interface with ARDUINO® Uno V3 compatibility, and on-board STLINK-V3E debugger/programmer. It supports rapid prototyping for high-performance embedded applications requiring real-time processing and peripheral integration.

For engineers reviewing the NUCLEO-H743ZI2 datasheet, NUCLEO-H743ZI2 pinout, NUCLEO-H743ZI2 application, or NUCLEO-H743ZI2 equivalent, this board serves as a production-ready evaluation platform for STM32H7 dual-core (M7/M4) firmware development, Ethernet-enabled edge node validation, USB device stack testing, and hardware abstraction layer (HAL) integration with STM32CubeIDE.

Technical Context

The NUCLEO-H743ZI2 implements the STM32H743ZIT6 in LQFP144 package, delivering dual-core Arm Cortex-M7/M4 execution with tightly coupled memory, hardware floating-point units, and advanced peripheral routing through the STM32Cube ecosystem. It integrates a 32.768 kHz crystal oscillator for RTC accuracy and supports flexible power sourcing via USB VBUS, external supply, or ST-LINK debug port.

Board-level features include three user LEDs (LD1–LD3), two push-buttons (user and reset), SWD debugging interface, ST morpho headers for full MCU I/O access, and dual expansion connectors: ST Zio (with ARDUINO® Uno V3 pinout) and ST morpho. The on-board STLINK-V3E provides mass storage, Virtual COM port, and debug capabilities without external tools.

Key Specifications

Availability

NUCLEO-H743ZI2 is available at Aetrix Electronics and suitable for industrial IoT gateway validation, motor control algorithm prototyping, and secure firmware development requiring stable component supply and long-term toolchain support.

Supply support for NUCLEO-H743ZI2 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, specializing in microcontrollers, analog ICs, power management, and sensors for automotive, industrial, and consumer markets.

The STM32 Nucleo series is designed to accelerate embedded software development with standardized form factors, open-source HAL libraries, and seamless IDE integration-targeting rapid proof-of-concept and scalable production firmware deployment.

FAQ

Does NUCLEO-H743ZI2 support dual-core debugging of M7 and M4 simultaneously?

Yes. The board's STM32H743ZIT6 MCU supports independent debugging of both Cortex-M7 and Cortex-M4 cores using STM32CubeIDE with STLINK-V3E. Debug sessions can be launched separately or synchronized via shared memory and inter-processor communication (IPC) mechanisms defined in the HAL and CMSIS layers.

What is the difference between NUCLEO-H743ZI and NUCLEO-H743ZI2?

The NUCLEO-H743ZI2 replaces the original NUCLEO-H743ZI and upgrades the on-board debugger from ST-LINK/V2-1 to STLINK-V3E, enabling faster programming speeds, enhanced Virtual COM port reliability, and improved USB enumeration stability across Windows, Linux, and macOS host systems.

Can the Ethernet interface operate without external magnetics?

No. The board includes an Ethernet PHY (DP83848C or equivalent) but requires an external RJ45 connector with integrated magnetics (e.g., HR911105A) for physical-layer compliance. The schematic confirms unpopulated magnetics circuitry; users must provide a compliant magjack or add discrete magnetics per IEEE 802.3 standards.

Is the USB Micro-AB connector configured for Device-only or OTG operation?

It is configured for USB OTG Full-Speed operation, supporting both device and host roles via the USB OTG HS/FS controller in the STM32H743ZIT6. The board routes VBUS sensing and ID pin, enabling dynamic role switching in firmware using the STM32Cube USB Device and Host libraries.