STMicroelectronics STM3210B-ARD

Overview

STM3210B-ARD from STMicroelectronics is the order code for the Embedded Pi - a triple-play development platform integrating STM32F103 (72 MHz, 128 KB Flash, 20 KB RAM), Raspberry Pi, and Arduino™ ecosystems. It supports three operational modes (Standalone, ST-Adapter, Raspberry Pi mode) and provides dual-voltage shield compatibility (3.3 V/5 V selectable via jumpers), CAN interface, and extended peripheral access including SPI, I²C, PWM, UART, and analog inputs.

For engineers reviewing the STM3210B-ARD datasheet, STM3210B-ARD pinout, STM3210B-ARD application, or STM3210B-ARD equivalent, key selection considerations include its role as a hardware bridge between Raspberry Pi and Arduino shields, jumper-selectable voltage and mode configuration, and native CAN support not found on standard Arduino Uno or Raspberry Pi GPIO headers.

Technical Context

The Embedded Pi implements a hybrid architecture where the STM32F103 acts as either a standalone controller, a command-executing co-processor to Raspberry Pi (ST-Adapter mode), or a transparent GPIO/CAN/SPI/I²C bridge (Raspberry Pi mode). Mode selection is hardware-controlled via physical jumpers, eliminating software boot dependency.

It delivers Arduino™-form-factor compatibility with 6 analog inputs, 4 PWM outputs, 1 UART, 1 I²C, and 1 SPI in base configuration - plus extended interfaces (additional SPI, I²C, 2 PWM, 1 UART, 6 analog inputs, 1 CAN) accessible via dedicated headers, enabling sensor fusion, motor control, and industrial fieldbus connectivity.

Key Specifications

Availability

STM3210B-ARD is available at Aetrix Electronics and suitable for rapid prototyping, educational robotics labs, industrial sensor gateway development, and cross-platform embedded training programs requiring stable component supply and long-term board availability.

Supply support for STM3210B-ARD 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 ICs, sensors, and automotive-grade components with ISO 9001 and IATF 16949 certified processes.

The Embedded Pi product line targets multi-ecosystem interoperability - bridging open-source hardware communities (Arduino, Raspberry Pi) with professional ARM-based MCU development, specifically for education, proof-of-concept validation, and hybrid system integration.

FAQ

Does STM3210B-ARD include the STM32F103 microcontroller onboard?

Yes. The STM3210B-ARD board integrates the STM32F103RET6 MCU - a 72 MHz ARM Cortex-M3 device with 512 KB Flash and 64 KB RAM - as confirmed in the Embedded Pi data brief and schematic documentation. This MCU serves as the central processing and peripheral interface unit across all three operating modes.

Can STM3210B-ARD connect directly to a Raspberry Pi without additional cables or adapters?

Yes. STM3210B-ARD features a 40-pin GPIO header mechanically and electrically compatible with Raspberry Pi Model B+ and later. It connects via direct stacking using standard 2.54 mm pitch headers, enabling native access to Raspberry Pi's 3.3 V GPIO, I²C, SPI, UART, and interrupt lines without breakout cables or level shifters.

What is the purpose of the CAN interface on STM3210B-ARD?

The integrated CAN 2.0B interface - implemented with STM32F103's on-chip controller and external high-speed transceiver - allows direct connection to industrial fieldbus networks (e.g., CAN-based motor drives, HVAC controllers, or vehicle ECUs) for data acquisition and command relay in edge-node applications.

How does voltage selection (3.3 V vs. 5 V) affect Arduino shield compatibility?

Voltage selection is controlled by on-board jumpers that configure the logic-level translation circuitry. Setting to 5 V enables safe operation with classic Arduino shields (e.g., LCDs, relay boards); setting to 3.3 V prevents overvoltage damage when using modern low-power sensors or RF modules rated only for 3.3 V I/O.