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The Bluegiga APx4 is a small form factor, low power, system-on-module that includes the latest wireless connectivity standards: 802.11 b/g/n and Bluetooth 4.0. APx4 is based on Freescale's i.MX28 processor family and runs an embedded Linux operating system based on the Yocto ProjectTM. In addition to integrating the 454MHz ARM9 processor, the wireless connectivity technologies, and Linux operating system, the APx4 also includes many built-in applications, such as the 802.11 and Bluetooth 4.0 stacks, Continua v.1.5 compliant IEEE manager and many more. This combination constitutes the ideal platform for designing multi-radio wireless gateways that enable fast time-to-market and minimum R&D risks.

The Bluegiga APx4 software can be easily extended or tailored, customizing the Linux operating system with different applications. The motherboards for the APx4 can be easily extended to include almost anything from 3G modems to Ethernet and audio interfaces to and touch screen displays.

The Bluegiga APx4 is an ideal product for applications requiring wireless or wired connectivity technologies and the processing power of the ARM9 processor, such as health and fitness gateways, building and home automation gateways, M2M, point-of-sale, and industrial connectivity.

Key Benefits

Fully integrated wireless system on a module

  • Low development costs
  • Fast time-to-market: decreases development time by 12 months
  • Reduced R&D risks

State-of-the-art connectivity

  • Bluetooth 4.0 
  • 802.11 b/g/n with access point mode
  • Seamless Bluetooth and Wi-Fi co-existence


  • Fast software development
  • Enables re-using existing applications 
  • Open source, free development tools
  • Community support

Built-in Bluegiga applications

  • Faster development 
  • Proven, maintained and supported applications

Good extendability

  • Supports a range of applications
  • Supports a range of connectivity technologies

A qualified solution

  • Proven interoperability
  • Minimal qualification costs
  • Faster time-to-market

Key Features

APx4 is a computing platform equipped with

  • 450MHz ARM9 core (Freescale i.MX28)
  • 64MB RAM
  • 128MB Flash
  • Real Time Clock
  • Linux operating system
  • SO-DIMM form factor

A connectivity platform equipped with

  • Bluetooth 4.0 dual-mode radio
  • 2.4GHz 802.11 b/g/n radio
  • Wi-Fi Access Point mode
  • 10/100 Ethernet
  • USB 2.0 High Speed

Many extension options

  • Up to 800 x 480 resistive touch screen
  • Multiple SPI, UART and I2C
  • I2S
  • PWM, GPIO and AIO

For Linux O/S

  • Based on the Yocto Project(TM)
  • Thousands of open source software packages available

Bluegiga Software Development Kit contents

  • A complete tool chain for developing drivers and applications into APx4
  • Graphical tool for software image building and packaging
  • Flexible APIs for Bluetooth 4.0, Wi-Fi and Continua

Built-in Bluegiga applications

  • eHealth software for Continua compliant health applications 
  • BlueConnector for generic Bluetooth connectivity
  • HTTP server with graphical configuration interface


  • Bluetooth
  • CE
  • FCC
  • IC


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