STMicroelectronics STM32F3DISCOVERY

Overview

STM32F3DISCOVERY from STMicroelectronics is a Discovery kit built around the STM32F303VCT6 Arm® Cortex®-M4 microcontroller (256 KB Flash, 48 KB RAM, LQFP100), integrated with ST-LINK/V2-B debugger, ST MEMS 3-axis gyroscope (LSM303AGR), 3-axis accelerometer/magnetometer (LSM303AGR), USB FS interface, and eight user-controllable LEDs for real-time sensor and peripheral demonstration.

For engineers reviewing the STM32F3DISCOVERY datasheet, STM32F3DISCOVERY pinout, STM32F3DISCOVERY application, or STM32F3DISCOVERY equivalent, this board supports rapid prototyping of mixed-signal control, motion-aware UIs, and sensor fusion algorithms - especially where on-board debug, multi-axis MEMS, and dual USB interfaces (ST-LINK + FS) are required in early development.

Technical Context

The board implements a complete evaluation platform for the STM32F303VC MCU, featuring dual USB connectivity: one port dedicated to ST-LINK/V2-B (providing SWD debug, Virtual COM port, and mass storage programming), and another for native USB FS device operation. All 100 LQFP I/O pins are exposed via an extension header compatible with standard 2.54 mm prototype boards.

It integrates two ST MEMS system-in-package sensors - the LSM303AGR - delivering synchronized 3-axis acceleration, angular rate, and magnetic field data over I²C, enabling immediate validation of sensor calibration, tilt compensation, and heading estimation without external components.

Key Specifications

Availability

STM32F3DISCOVERY is available at Aetrix Electronics and suitable for embedded prototyping, educational labs, and sensor algorithm validation requiring stable component supply, pre-integrated debug infrastructure, and certified ST MEMS sensor pairing.

Supply support for STM32F3DISCOVERY 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, MEMS sensors, and automotive-grade silicon.

The STM32 Discovery series targets rapid evaluation and learning - delivering fully assembled, tested, and documented hardware platforms with preloaded firmware and IDE-ready toolchain integration for specific STM32 MCU families.

FAQ

Does STM32F3DISCOVERY support drag-and-drop programming?

Yes - when used with ST-LINK/V2-B firmware v2.27.24 or later, the board appears as a mass storage device (STM32F3DIS) under Windows/macOS/Linux. Users can drag compiled .bin files directly onto the drive to program Flash memory without additional tools or drivers.

Can the onboard LSM303AGR sensor be accessed independently of the STM32F303VCT6?

No - the LSM303AGR is hardwired exclusively to the STM32F303VCT6 via dedicated I²C lines (PB6/SCL, PB7/SDA) and interrupt pins (PA1/INT1, PA2/INT2). There is no external sensor breakout or direct test point access; all sensor communication must occur through the host MCU's firmware.

What is the maximum operating frequency of the STM32F303VCT6 on this board?

The STM32F303VCT6 runs at its full rated frequency of 72 MHz using the internal HSI14 oscillator (14 MHz) multiplied by the PLL. The board includes all necessary decoupling capacitors and clock tree routing per ST's reference design, supporting sustained 72 MHz operation with FPU-enabled code.

Is STM32CubeIDE the only supported IDE for this Discovery kit?

No - while STM32CubeIDE is officially recommended and preconfigured for STM32F3DISCOVERY, the board is fully compatible with IAR Embedded Workbench for ARM (EWARM) and Keil MDK-ARM, both of which include ST-provided device support packs and example projects targeting the STM32F303VC and onboard peripherals.