NXP Semiconductors FRDMSTBC-A8451

Overview

FRDMSTBC-A8451 from NXP is a sensor toolbox shield development board designed to interface with the MMA8451Q 3-axis digital accelerometer, supporting I²C communication via dual I²C buses (I2C_SCL0/I2C_SDA0 and I2C_SCL1/I2C_SDA1), featuring SA0_A address select and two interrupt outputs (INT1_A, INT2_A), and targeting rapid prototyping of motion-sensing applications on Freedom or Arduino R3 platforms.

For engineers reviewing the FRDMSTBC-A8451 datasheet, FRDMSTBC-A8451 pinout, FRDMSTBC-A8451 application, or FRDMSTBC-A8451 equivalent, key considerations include I²C bus routing flexibility, MMA8451Q integration readiness, interrupt-driven motion detection support, and compatibility with OpenSDA-based NXP Freedom boards such as KL25Z/KL27Z (though those boards already integrate the MMA8451Q on-board).

Technical Context

The FRDMSTBC-A8451 implements a hardware abstraction layer between host microcontroller development boards and the MMA8451Q accelerometer, exposing both primary (I2C_SCL0/SDA0) and secondary (I2C_SCL1/SDA1) I²C interfaces for multi-sensor expansion or bus isolation. It routes all six critical MMA8451Q signals: VDD (dual supply pins), GND (two locations), SA0_A for I²C address configuration, and INT1_A/INT2_A for configurable motion interrupts.

Designed exclusively for evaluation and firmware development, the board provides through-hole pin headers (8 positions) and test points (8 locations) to support signal probing, voltage monitoring, and custom wiring without soldering. It does not contain active circuitry beyond passive routing and level-compatible I²C signal conditioning.

Key Specifications

Availability

FRDMSTBC-A8451 is available at Aetrix Electronics and suitable for motion-sensing prototyping, industrial condition monitoring validation, and educational embedded sensor labs requiring stable component supply and documented NXP reference hardware.

Supply support for FRDMSTBC-A8451 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

NXP Semiconductors is a global semiconductor company headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and IoT applications.

The FRDMSTBC-A8451 belongs to NXP's Sensor Toolbox ecosystem and was designed to accelerate firmware development and algorithm validation for motion-sensing applications using the MMA8451Q accelerometer on accessible, open-standard hardware platforms.

FAQ

What is the FRDMSTBC-A8451 used for?

The FRDMSTBC-A8451 is a development shield that enables rapid integration and testing of the MMA8451Q 3-axis digital accelerometer with NXP Freedom or Arduino R3-compatible host boards. It provides direct access to all essential accelerometer signals-including dual I²C buses, interrupt lines, and address configuration-supporting motion-detection firmware development, sensor fusion experiments, and classroom lab exercises without custom PCB design.

Does the FRDMSTBC-A8451 include the MMA8451Q sensor?

Yes, the FRDMSTBC-A8451 includes the MMA8451Q 3-axis digital accelerometer mounted in a 16-pin QFN package (3 mm × 3 mm × 1 mm). The board routes all required signals-including VDD, GND, I²C, SA0_A, INT1_A, and INT2_A-to accessible headers and test points, enabling immediate evaluation without additional component sourcing.

Which host development boards are compatible with the FRDMSTBC-A8451?

The FRDMSTBC-A8451 is mechanically and electrically compatible with any Arduino R3–compliant board and NXP Freedom development boards (e.g., FRDM-KL25Z, FRDM-KL27Z, FRDM-KL46Z). Note that FRDM-KL25Z and FRDM-KL27Z already integrate the MMA8451Q on-board, so the FRDMSTBC-A8451 is typically used with other Freedom variants or Arduino platforms lacking built-in motion sensing.

How do I connect the FRDMSTBC-A8451 to my computer?

To connect the FRDMSTBC-A8451 to your computer, first attach it to a compatible host board (e.g., FRDM-KL46Z), then use a standard USB cable to connect the host board's OpenSDA debug port to your PC. The FRDMSTBC-A8451 itself has no USB interface-it relies on the host board's onboard debugger and virtual COM port for power, programming, and serial communication during Sensor Toolbox operation.

Is Sensor Toolbox software required to use the FRDMSTBC-A8451?

While low-level firmware can directly access the MMA8451Q via I²C, the official Sensor Toolbox software from NXP provides a GUI-based environment for real-time acceleration visualization, register configuration, interrupt setup, and data logging-making it the recommended tool for initial evaluation and demonstration of the FRDMSTBC-A8451. The software is freely available at nxp.com/sensortoolbox.