As a Renesas Gold Partner, GainSpan is committed to support its customers with hardware and reference code for Renesas most popular MCU’s and platforms.


The ultra-low power GS1011MIPS (802.11b) module is integrated on the RL78G14 Renesas Demonstration Kit (RDK) available through Renesas distributors. Documentation for the RL78G14 RDK is available on the Renesas Website.

Wi-Fi Adapter Boards (WAB) are available on GainSpan Online Store and plug into the Renesas RDK’s through the Application Header Interface or PMOD connectors that are used on the RL78G13, RL78G14, RX62 and RX63 RDK. The WAB come in two configurations: the WAB-GW-GS1011MIP, an ultra-low power 802.11b solution based on the GS1011MIP and the WAB-GW-GS1500M an 802.11b/g/n solution based on the GS1500M module.

For other Renesas development boards, GainSpan offers evaluation boards that interface through an RS-232 connector.

MCU Firmware

GainSpan provides drivers and reference code for most Renesas microcontrollers including the RL78, RX62, RX63, V850, SuperH, 78K0 and 78K0R. Requiring as little as 2 KB of RAM and 6 KB of Flash, the reference code may be used with the IAR Embedded Workbench Kickstart Edition. Drivers are available for UART or SPI interface. To download the reference code, please register on the GainSpan support portal.

For the RL78G14, a demonstration code is available to download on the RL78G14 Renesas Demonstration Kit (RDK) page. The code includes several demo applications:

  • Connection to the Exosite cloud, in station/ client mode,
  • Connection to a smartphone, in soft AP mode, using the embedded web server hosted on the GainSpan module, service discovery and browser based or native iPhone/ Android apps
  • Provisioning and over-the-air firmware upgrade applications

iOS/Android apps

GainSpan-Renesas Wi-Fi Sensor application is available for iOS on the Apple App Store. An Android version is also available on the GainSpan support portal. The Wi-Fi sensor application allows LEDs on the Renesas RDK board to be turned on/off using an iOS or Android-based smartphone or tablet, and displays the temperature, light and spatial orientation sensed by the sensors on the RDK board.