STMicroelectronics STM32H7B3I-EVAL

Overview

STM32H7B3I-EVAL from STMicroelectronics is a full-featured evaluation board built around the STM32H7B3LIH6Q Arm® Cortex®-M7 microcontroller (2 MB Flash, 1.4 MB RAM, TFBGA225), featuring a 7" 800×480 RGB LCD with capacitive touch, 5-Mpixel DCMI camera, Wi-Fi® (802.11 b/g/n), CAN FD, USB OTG HS/FS, Octo-SPI NOR flash, SDRAM, and on-board STLINK-V3E debugger.

For engineers reviewing the STM32H7B3I-EVAL datasheet, STM32H7B3I-EVAL pinout, STM32H7B3I-EVAL application, or STM32H7B3I-EVAL equivalent, this board supports rapid prototyping of high-performance embedded vision, industrial HMI, and connected edge applications with validated peripheral integration and comprehensive STM32Cube software support.

Technical Context

The board implements a dual-domain power architecture supporting both VDD/VDDA analog and VDDIO digital rails, enabling precise ADC/DAC and sigma-delta modulator operation for power metering and temperature monitoring. It integrates hardware-accelerated crypto (AES, HASH, PKA) and OTFDEC for secure Octo-SPI code execution.

Its expansion interface set includes dedicated connectors for DFSDM microphone daughterboards, motor-control interfaces, I²C peripherals, and external RS-232/CAN FD transceivers - all electrically isolated and routed to STM32H7B3LIH6Q's full GPIO remapping capability and dual-core debug trace (ETM + SWO).

Key Specifications

Availability

STM32H7B3I-EVAL is available at Aetrix Electronics and suitable for industrial HMI development, embedded vision prototyping, edge AI inference validation, and secure IoT gateway design requiring stable component supply and long-term toolchain continuity.

Supply support for STM32H7B3I-EVAL 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, power management ICs, sensors, and analog/mixed-signal devices for industrial, automotive, and consumer markets.

The STM32H7 series targets high-end real-time applications demanding dual-core processing, advanced graphics, cryptography, and deterministic peripheral response - optimized for industrial control, medical imaging, and smart infrastructure.

FAQ

Does STM32H7B3I-EVAL support external SDRAM expansion beyond the on-board 8-Mx32bit chip?

No - the board integrates a fixed 8-Mx32bit (32 MB) SDRAM device (IS42S32800J-6BLI) directly wired to the STM32H7B3LIH6Q FMC bus. No additional SDRAM expansion connector is provided; memory capacity is limited to this single chip for timing-critical display and video buffering.

Can the on-board Wi-Fi® module operate in AP mode and support TLS 1.2+ for secure MQTT communication?

Yes - the certified 802.11 b/g/n module supports station, soft-AP, and Wi-Fi Direct modes. With STM32Cube middleware (AWS IoT, Azure SDK), it implements TLS 1.2+ via hardware-accelerated crypto engines, enabling authenticated, encrypted MQTT publish/subscribe to cloud platforms.

Is the STLINK-V3E debugger on STM32H7B3I-EVAL capable of tracing ETM instruction streams at full 480 MHz core speed?

Yes - the STLINK-V3E supports ETM trace via its 32-pin ARM 20-pin + 12-pin trace header (J10). Trace bandwidth is sufficient for full-speed instruction capture at 480 MHz when using compatible external trace probes (e.g., SEGGER J-Trace PRO), enabling cycle-accurate performance analysis.

What is the maximum resolution and frame rate supported by the DCMI interface when using the on-board 5-Mpixel camera module?

The on-board QSXGA camera (OV5640) supports 2592×1944 (5 Mpixels) at 10 fps in JPEG mode, or VGA (640×480) at 30 fps in raw YUV format. Frame rate is constrained by DCMI bandwidth, SDRAM write speed, and JPEG encoding latency - verified in STM32Cube demo firmware.