Murata Manufacturing Co., Ltd. has developed Wi-Fi™ driver software that enables Murata Wi-Fi™ modules to be used with µITRON*1 or other real-time OSes*2 (RTOSes) . The solution makes it easy to bring Wi-Fi™ to resource-constrained,*3 energy-efficient RTOS devices running at low clock speeds,*4 which opens the door for Wi-Fi™ in OSes other than relatively full-featured alternatives such as Linux®*5 and Android®.*6


Wireless LAN environments are now more common, even in homes, fueled in part by greater popularity of Wi-Fi™ in smartphones, portable game consoles, and other small, lightweight devices. At the same time, more Internet-based cloud services are launched every day. Network connectivity and use of network services on these devices has extended beyond Linux®, Android®, and other relatively full-featured OSes to the realm of embedded devices,*7 a field previously unrelated to this kind of wireless networking.

In response, Murata has developed Wi-Fi™ drivers compatible with the RTOS used in many of these small, resource-constrained embedded devices, providing a one-stop solution for hardware and software with Murata Wi-Fi™ devices.

Availability of the drivers makes implementation of sophisticated Wi-Fi™ functionality in embedded devices easier, faster, and more economical, demonstrating Murata's commitment to supporting Wi-Fi™ development.


  • Designed for resource-constrained CPUs at low clock frequencies, yet compatible with the latest high-speed wireless specification (IEEE-802.11n) , for high-speed communication.
  • In addition to client mode (for operation similar to that of a wireless extension handset), access point mode is included, for operation similar to that of the main wireless handset. Providing more robust security than ad hoc connectivity,*8 this mode enables easy connections from smartphones and support for an array of products and services.
  • Supports WPA/WPA2*9 Personal encryption without additional software.
  • Also supports WPS 2.0.*10 Wi-Fi™ certified, in conjunction with WPS products from Ubiquitous Corporation. Support is planned for other WPS 2.0-compatible products.
  • Also supports Wi-Fi Direct™, enabling direct connection between Wi-Fi™ devices.
  • The driver package consists of a Wi-Fi™ driver core and interfaces, which can be developed to suit the environment of use. Sample code for interfaces is also included.

    The driver package consists of a Wi-Fi™ driver core and interfaces, which can be developed to suit the environment of use. Sample code for interfaces is also included.

  • Extended platform support is planned.
  • Existing resources can be used while adding network connectivity to RTOS devices.
  • Used with Murata Wi-Fi™ modules, offers an integrated (hardware+software) , one-stop solution.


  • RTOS devices with a low-spec 32-bit CPU
  • Wi-Fi™ functionality for machine-to-machine (M2M) devices
  • RTOS digital still or video cameras, printers, home appliances, and so on

License Fees




(Micro Industrial TRON) :

An RTOS specification. Offers ample performance even with limited processing power and memory, enabling use even on low-performance computers.
*2Real-time OS (RTOS) : An operating system that implements functions for real-time processing. Includes a scheduler to determine required processing time, as well as functions enabling execution within the allotted time even with multitasking.
*3Resources: CPU processing speed and memory capacity required for computer operation.
*4Clock: Signals that coordinate the timing of processing by circuitry that runs on a specific frequency, such as CPUs. The number of clocks per second is referred to as the clock speed or frequency, with a low value indicating a low clock frequency. Low clock frequency indicates limited processing power, while a high clock frequency indicates higher power.
*5Linux®: A type of OS. Originally a computer OS, Linux® is now used in many mobile phones, digital appliances, and other embedded devices. Notable for its standard network functions and stability.
*6Android®: General name for a platform mainly used in smartphones and tablet computers, including elements such as the OS, middleware, interfaces, and applications. Currently the leading smartphone OS in the U.S. and Japan.
*7Embedded devices: Electronic devices with built-in computer systems designed to implement specific functionality.
*8Ad hoc connection: A wireless LAN protocol. Devices communicate directly, without an intermediate access point.
*9WPA/WPA2: Encryption methods established by the Wi-Fi Alliance, an industry organization involved in wireless LAN technology.
*10WPS2.0: Encryption method established by the Wi-Fi Alliance. Enables easy configuration of connection and security settings for wireless LAN devices.

*Wi-Fi is a registered trademark of Wi-Fi Alliance.

*Android is a registered trademark of Google Inc.

*Linux is a registered trademark of Mr.Linux Torvalds.

*Wi-Fi Direct is a registered trademark of Wi-Fi Alliance.