STMicroelectronics STM32439I-EVAL2

Overview

STM32439I-EVAL2 from STMicroelectronics is an evaluation board built around the STM32F439NIH6 ARM® Cortex®-M4 microcontroller, featuring a 5.7" 640×480 capacitive touchscreen LCD, 8MB SDRAM, 1MB SRAM, and 8MB NOR Flash. It supports Ethernet (IEEE-802.3-2002), dual USB OTG (HS/FS), CAN 2.0A/B, SAI-based stereo audio, and camera interface - enabling rapid prototyping of industrial HMI and connected embedded systems.

For engineers reviewing the STM32439I-EVAL2 datasheet, STM32439I-EVAL2 pinout, STM32439I-EVAL2 application, or STM32439I-EVAL2 equivalent, this board delivers validated hardware integration for STM32F439 peripheral evaluation, real-time debugging via embedded ST-LINK/V2, and expansion-ready headers for custom daughterboards in motor control, IoT gateway, and multimedia HMI development.

Technical Context

The board implements the full peripheral suite of the STM32F439NIH6 MCU, including dual USB OTG with Micro-AB connectors, SAI-driven stereo DAC and digital microphone input, and IEEE-802.3-compliant Ethernet PHY with RMII interface. It integrates 8M×32-bit SDRAM for graphics buffering and 8M×16-bit NOR Flash for firmware storage.

Debugging is supported through JTAG/SWD and ETM trace interfaces, with ST-LINK/V2 embedded for seamless programming and real-time tracing. Power is flexibly supplied via six options: power jack, ST-LINK/V2 USB, two USB FS ports, USB HS port, or daughterboard connector.

Key Specifications

Availability

STM32439I-EVAL2 is available at Aetrix Electronics and suitable for industrial HMI development, embedded gateway validation, and STM32F439-based motor control prototyping requiring stable component supply and long-term toolchain support.

Supply support for STM32439I-EVAL2 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, designing and manufacturing microcontrollers, analog ICs, power devices, and sensors for industrial, automotive, and consumer applications.

The STM32439I-EVAL2 belongs to ST's official evaluation platform family for the STM32F439 line - engineered to accelerate firmware development, peripheral validation, and system-level integration of high-performance Cortex-M4 MCUs in resource-rich embedded applications.

FAQ

Does STM32439I-EVAL2 include an onboard debugger?

Yes. The board integrates ST-LINK/V2 as an embedded in-circuit debugger and programmer, supporting SWD/JTAG interfaces and ETM trace for real-time debugging of the STM32F439NIH6 MCU without external tools.

What display resolution and interface does the LCD support?

The board features a 5.7" color VGA TFT LCD with 640 × 480 pixel resolution and capacitive touchscreen, driven directly by the STM32F439NIH6's LTDC peripheral and controlled via its FSMC interface for parallel RGB output.

Can STM32439I-EVAL2 be used for Ethernet application development?

Yes. It includes an IEEE-802.3-2002 compliant Ethernet connector with RMII interface, fully supported by the STM32F439NIH6's MAC peripheral and pre-integrated LwIP stack in demonstration software.

Is there on-board storage for firmware and data logging?

Yes. The board provides 8MB of NOR Flash for firmware storage, 8MB of SDRAM for runtime buffers, and a microSD card slot (SDIO interface) supporting ≥2GB cards for persistent data logging and media storage.