STMicroelectronics STM32F4DIS-BB

Overview

STM32F4DIS-BB from STMicroelectronics is the base expansion board for the STM32F4 Discovery kit, providing microSD card™ slot, 10/100 Ethernet with IEEE 1588v2 support (RJ45), and dedicated connectors for LCD, camera, Wi-Fi®, UART, I²C, SPI, CAN, PWM, and GPIO interfaces. It serves as the central interconnect hub enabling system-level prototyping of embedded vision, industrial connectivity, and human-machine interface applications.

For engineers reviewing the STM32F4DIS-BB datasheet, STM32F4DIS-BB pinout, STM32F4DIS-BB application, or STM32F4DIS-BB equivalent, this page delivers verified mechanical interface definitions, confirmed expansion connector mappings, documented host-processor interface protocols (UART/SPI/CAN), and validated interoperability with STM32F4DIS-CAM, STM32F4DIS-LCD, and STM32F4DIS-WIFI boards.

Technical Context

The STM32F4DIS-BB is a passive carrier board with no active silicon - it routes signals between the STM32F4 Discovery mainboard and four optional expansion modules. All interfaces are electrically buffered and level-shifted to match STM32F4 GPIO voltage domains (3.3 V logic).

It implements standardized 0.1" pitch male/female headers for all expansion connections, including a 40-pin dual-row header for LCD/camera, a 20-pin header for Wi-Fi®, and dedicated 10-pin headers for UART/I²C/SPI/CAN/GPIO breakout. The Ethernet PHY (DP83848) connects directly to the STM32F4 Discovery's RMII interface.

Key Specifications

Availability

STM32F4DIS-BB is available at Aetrix Electronics and suitable for embedded vision development, industrial Ethernet gateway prototyping, HMI interface validation, and IoT edge node integration requiring stable component supply and documented STMicroelectronics reference hardware.

Supply support for STM32F4DIS-BB 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 devices, and sensors for industrial, automotive, and consumer applications.

The STM32F4DIS-BB belongs to ST's STM32 Discovery ecosystem - a family of low-cost, fully integrated evaluation platforms designed to accelerate firmware development, interface validation, and system-level proof-of-concept for STM32 microcontrollers.

FAQ

Is STM32F4DIS-BB a standalone development board?

No. STM32F4DIS-BB is not a standalone board - it requires the STM32F4 Discovery kit (e.g., STM32F407VG-based mainboard) as its host processor. It provides no onboard MCU, clock source, or power regulation beyond basic voltage translation and signal routing.

Which expansion boards are mechanically and electrically compatible with STM32F4DIS-BB?

STM32F4DIS-BB is designed exclusively for use with ST's official expansion modules: STM32F4DIS-CAM (1.3 MP CMOS camera), STM32F4DIS-LCD (3.5" SSD2119-based touchscreen display), and STM32F4DIS-WIFI (SN8200 Wi-Fi® module). Pinouts and signal assignments are defined in DocID024042 Rev 3.

Does STM32F4DIS-BB include Ethernet magnetics and RJ45 jack with integrated magnetics?

Yes. The board integrates a standard 10/100BASE-TX RJ45 connector with built-in Ethernet magnetics and LED indicators. It connects directly to the STM32F4 Discovery's RMII interface without requiring external PHY configuration or layout adjustments.

Can STM32F4DIS-BB be used with other STM32 discovery kits beyond STM32F4?

No. STM32F4DIS-BB is mechanically and electrically optimized for the STM32F4 Discovery kit (specifically the STM32F407VG evaluation board). Its pin mapping, power routing, and signal buffering assume the F4-series RMII, SDIO, and parallel interface timing - it is not compatible with STM32F0/F1/F3/F7/L4 series discovery boards.