NXP Semiconductors FRDM-K64F-AGM04

Overview

FRDM-K64F-AGM04 from NXP Semiconductors is a sensor fusion development kit comprising the FRDM-K64F Freedom board pre-integrated with the FRDM-STBC-AGM01 sensor shield, enabling full 9-axis (accelerometer + gyroscope + magnetometer) orientation estimation using NXP's Sensor Fusion Library v7.00. It features the K64F MCU (ARM Cortex-M4F, 120 MHz, 1 MB Flash, 256 KB RAM), FXOS8700CQ 6-axis accel/mag sensor, and FXAS21002 gyroscope - validated for aerospace, Android, and Windows 8 coordinate frames.

For engineers reviewing the FRDM-K64F-AGM04 datasheet, FRDM-K64F-AGM04 pinout, FRDM-K64F-AGM04 application, or FRDM-K64F-AGM04 equivalent, this kit delivers out-of-the-box support for tilt-compensated eCompass, gaming-grade orientation, and 9-axis Kalman-filtered AHRS - with I2C-based sensor interfacing, OpenSDA debug interface, and compatibility with NXP Sensor Fusion Toolbox for Windows and Android.

Technical Context

The FRDM-K64F-AGM04 implements a modular sensor fusion architecture built on the Intelligent Sensing SDK (ISSDK) and Kinetis SDK, supporting bare-metal and RTOS environments without Processor Expert dependency. It uses programmable multirate sampling (up to 100 Hz sensor input, 25–50 Hz fusion rate) and provides direct access to global FIFO structures for sensor data ingestion and fusion result extraction.

It supports three primary reference frames (AEROSPACE, Android, Windows 8), includes NXP's geomagnetic calibration engine with hard/soft iron correction and quality-of-fit indication, and enables optional motion-triggered standby mode to power down sensors during inactivity - reducing average current draw while preserving orientation continuity.

Key Specifications

Availability

FRDM-K64F-AGM04 is available at Aetrix Electronics and suitable for industrial IoT edge sensing, wearable motion tracking, robotics navigation, and automotive ADAS prototyping requiring stable component supply and validated sensor fusion firmware integration.

Supply support for FRDM-K64F-AGM04 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 leader specializing in secure connectivity solutions for automotive, industrial, IoT, and mobile applications - with deep expertise in microcontrollers, sensors, and embedded software stacks.

The FRDM-K64F-AGM04 belongs to NXP's Freedom Development Platform family, designed to accelerate rapid prototyping of sensor-driven embedded systems using validated hardware-software co-design - specifically targeting real-time orientation, motion analytics, and context-aware device control.

FAQ

What is the FRDM-K64F-AGM04, and how does it differ from the standard FRDM-K64F?

The FRDM-K64F-AGM04 is a bundled development kit that integrates the FRDM-K64F base board with the FRDM-STBC-AGM01 sensor shield - providing immediate hardware readiness for 9-axis sensor fusion. Unlike the standalone FRDM-K64F (which lacks onboard motion sensors), the FRDM-K64F-AGM04 includes FXOS8700CQ and FXAS21002 sensors pre-wired via I²C, along with factory-aligned mechanical mounting and verified signal integrity - eliminating sensor bring-up time and PCB layout validation effort for fusion algorithm evaluation.

Which sensor fusion algorithms are supported out-of-the-box on the FRDM-K64F-AGM04?

The FRDM-K64F-AGM04 supports all core algorithms in NXP Sensor Fusion Library v7.00: 3DOF tilt (accel-only), 6DOF tilt-compensated eCompass (accel + mag), 6DOF gaming (accel + gyro), and full 9DOF AHRS (accel + gyro + mag) using Kalman filtering. Each is selectable at compile time via build.h flags (e.g., F_9DOF_GBY_KALMAN), and all operate with validated timing budgets, memory footprints, and coordinate frame outputs aligned to aerospace, Android, or Windows 8 standards - as confirmed in the NSFK_Prod_UG Rev. 2.0 documentation.

Does the FRDM-K64F-AGM04 include Bluetooth connectivity for wireless sensor data streaming?

No, the FRDM-K64F-AGM04 itself does not integrate Bluetooth hardware. It relies on external Bluetooth modules (e.g., FRDM-FXS-MULT2-B) or USB-to-Bluetooth adapters for wireless communication with the NXP Sensor Fusion Toolbox for Android or Windows. The FRDM-K64F-AGM04 provides UART3 (PTC17:16) routed to J10 header pins - enabling straightforward connection to compatible Bluetooth transceivers - but no onboard RF circuitry, antenna, or Bluetooth stack is included in the FRDM-K64F-AGM04 bundle.

Can the FRDM-K64F-AGM04 be used with real-time operating systems (RTOS)?

Yes, the FRDM-K64F-AGM04 is explicitly designed for RTOS-agnostic operation. Its Sensor Fusion Library v7.00 abstracts timer, mutex, and memory allocation dependencies behind portable HAL interfaces - allowing seamless integration with FreeRTOS, uC/OS, ThreadX, or custom kernels. Example projects demonstrate SysTick-based scheduling under FreeRTOS, and the library's thread-safe global structures (e.g., sensor FIFOs and fusion result buffers) ensure deterministic behavior in multi-threaded contexts without requiring modification to core fusion logic.

Is magnetic calibration supported on the FRDM-K64F-AGM04, and how is it performed?

Yes, the FRDM-K64F-AGM04 fully supports NXP's award-winning magnetic calibration software, including hard/soft iron compensation and geomagnetic field strength estimation. Calibration is executed interactively via the NXP Sensor Fusion Toolbox for Windows: users rotate the FRDM-K64F-AGM04 through a figure-eight pattern while the toolbox collects magnetometer samples, computes correction coefficients, and displays quality-of-fit metrics. Calibrated parameters are stored in non-volatile memory and applied automatically during subsequent fusion runs - ensuring heading accuracy within ±2° under typical indoor conditions.