STMicroelectronics NUCLEO-H745ZI-Q

Overview

NUCLEO-H745ZI-Q from STMicroelectronics is an STM32 Nucleo-144 development board built around the dual-core ARM Cortex-M7/M4 STM32H745ZIT6 microcontroller in LQFP144 package, featuring integrated SMPS for low-power operation, Ethernet PHY support, USB OTG Full-Speed via Micro-AB connector, and ST-LINK/V3E debugger/programmer. It targets rapid prototyping of high-performance embedded applications requiring real-time processing, connectivity, and power efficiency.

For engineers reviewing the NUCLEO-H745ZI-Q datasheet, NUCLEO-H745ZI-Q pinout, NUCLEO-H745ZI-Q application, or NUCLEO-H745ZI-Q equivalent, this board serves as a production-ready evaluation platform with ARDUINO® Uno V3–compatible ST Zio expansion headers, comprehensive STM32Cube software support, and IDE compatibility across IAR, Keil MDK-ARM, and STM32CubeIDE - critical for firmware validation, peripheral bring-up, and system-level integration testing.

Technical Context

The NUCLEO-H745ZI-Q implements a dual-core architecture with independent M7 (480 MHz) and M4 (240 MHz) processors sharing memory and peripherals, enabling asymmetric multiprocessing for real-time control + application-layer tasks. Its on-board ST-LINK/V3E provides mass storage, Virtual COM port, and debug port over USB without external probes.

It integrates an internal switched-mode power supply (SMPS) to generate Vcore, reducing active-mode power consumption versus linear regulators. The board supports IEEE-802.3-2002-compliant Ethernet via RMII interface and includes 32.768 kHz crystal oscillator for precise RTC timing and low-power clocking modes.

Key Specifications

Availability

NUCLEO-H745ZI-Q is available at Aetrix Electronics and suitable for industrial automation prototyping, edge AI inference validation, and Ethernet-connected IoT gateway development requiring stable component supply, long-term toolchain continuity, and production-aligned hardware reference design.

Supply support for NUCLEO-H745ZI-Q 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, designing and manufacturing microcontrollers, analog ICs, power management devices, and sensors for industrial, automotive, and consumer markets.

The STM32 Nucleo series was developed to accelerate embedded software development by delivering standardized, open-hardware evaluation platforms with unified software ecosystems - specifically targeting rapid proof-of-concept, firmware validation, and educational use across the STM32 portfolio.

FAQ

Does the NUCLEO-H745ZI-Q support high-speed USB?

No. The NUCLEO-H745ZI-Q implements USB OTG Full-Speed (12 Mbps) via its Micro-AB connector, not High-Speed (480 Mbps). This aligns with the STM32H745ZIT6's on-die USB FS PHY and is sufficient for firmware updates, CDC communication, and HID-class device emulation - but not for bandwidth-intensive streaming applications.

Can the internal SMPS be disabled to use external power regulation?

Yes. The board supports flexible power-supply options including ST-LINK USB VBUS, USB connector, or external sources. The internal SMPS can be bypassed using jumper configuration (as documented in UM2408), allowing direct Vcore supply from an external regulator - essential for EMI-sensitive or ultra-low-noise analog subsystem validation.

Is Ethernet functionality enabled out-of-the-box?

Yes. The NUCLEO-H745ZI-Q includes a fully populated Ethernet PHY (DP83848 or equivalent) and RMII interface routed to the STM32H745ZIT6. No soldering or hardware modification is required; Ethernet examples are included in the STM32CubeH7 firmware package and work immediately with standard Ethernet cables and switches.

What IDEs are officially supported for debugging and flashing?

STMicroelectronics officially supports IAR Embedded Workbench®, Keil MDK-ARM (Windows only), and STM32CubeIDE across all Nucleo boards. All three integrate directly with the on-board ST-LINK/V3E debugger, enabling breakpoints, register inspection, live variable watch, and flash programming without additional hardware or license fees.