NXP/FREESCALE SEMICONDUCTOR FRDM-KL25Z EVAL BRD, KINETIS KL25Z FREESCALE Freedom Platform

Description Notes

• Old Revision: This is an earlier version (prior to Rev. I), featuring:

  • Onboard MMA8451Q 3‑axis accelerometer

  • USB‑Micro connector (not USB‑C)

• Not to be confused with Rev. I:

  • Rev. I switched to USB‑C

  • MMA8451Q is not soldered on Rev. I (“accelerometer not soldered on Rev. I”; NXP also states the MMA8451Q is "no longer recommended for new designs”)

On‑Board 3‑Axis MMA8451Q Accelerometer
Ideal for motion‑sensing: tilt detection, gaming controllers, virtual pinball, gesture interfaces — no need for extra sensors.

• 🔌 Micro‑USB (mini‑B) Connector
  Reliable compatibility with your current cables and accessories. Supports drag‑and‑drop OpenSDA programming.

• 🛠 Full-featured Freedom Board Design
  48 MHz MKL25Z128 Cortex‑M0+ MCU, 128 KB Flash, 16 KB SRAM, RGB LED, capacitive touch slider, Arduino‑compatible headers, multiple power options (USB, coin cell, external).

• 🔧 Compatible with NXP SDK, mbed, Zephyr, and OpenSDA tools
  Fully supported with firmware examples and development environments; works seamlessly with all software targeting any FRDM‑KL25Z board.

⚠️ Old Rev vs. New Rev I

FeatureOld Revision (This Board)New Rev I
USB ConnectorMicro‑USBUSB‑C
MMA8451Q AccelerometerIncludedNot soldered – omitted in hardware
Software CompatibilityFully supportedFully supported
Sensor availability✅ Built‑in accelerometer❌ Requires external accelerometer

• ⚠️ Note: NXP specifies that the MMA8451Q is no longer recommended for new designs, but that does not affect existing boards like this one.

🎯 Why Choose This Board?

• Everything built-in: Motion sensor, RGB LED, touch slider—all in one.

• Proven reliability: Older micro‑USB form factor; easy to integrate and replace.

• Development-ready: Includes drag-and-drop OpenSDA bootloader for instant programming.

• Perfect for hobbyists and legacy projects that depend on accelerometer input or micro-USB.

📦 Package Contents

• 1× FRDM‑KL25Z Freedom Board (Pre‑Rev I with MMA8451Q)

• 1× USB cable