The Renesas Demonstration Kit (RDK) for RL78/G14 is an evaluation and demonstration tool for Renesas RL78/G14 microcontrollers and its partners. The goal is to provide the user with a powerful debug and demonstration platform targeted at common applications. To aid in the evaluation of the RL78 family of microcontrollers, we include 2 development environments : e2studio : Renesas eclipse embedded studio, known as e2studio, is a complete development and debug environment based on the popular Eclipse CDT project. Essentially open source, the Eclipse CDT covers build (editor, compiler and linker control) as well as debug phase based on an extended GDB interface. It supports GCC and IAR compiler.
IAR's Embedded Workbench Kickstart Edition for the RL78 : this full featured tool suite allows for up to 16KB of application code to be implemented on the RL78/G14 RDK.To facilitate programming the RDK, both tools support the Renesas TK Debugger which is on-board the RL78/G14 RDK.


Board Layout

Block Diagram

PC Connection

Features Highlights

Monitor the board temperature, orientation and incident light, turn on and off the on-board LEDs from anywhere through the cloud, via your computer or your smartphone!


iOS Application

Buglabs cloud control demo

Exosite cloud control demo

Target Applications and Features

  • Stereo audio driver connected to the PWM and DAC interfaces
  • Amplified on-board speaker and external Stereo audio jack.
  • On-board MEMS microphone to demonstrate sampling and recording capabilities (ADI)
  • Volume Control Potentiometer, connected to ADC input.
User Interface
  • OKAYA Graphical LCD
  • E Ink Corporation Display
  • User pushbutton switches and a reset switch.
  • 12 on-board LEDs (LED Wheel pattern)
  • On-board Wi-Fi 802.11b Module from GainSpan Corporation
  • RS-232 Interface
  • I2C, SPI with Debug through the Beagle connector from Total Phase
  • Application Header to support several external Wi-Fi modules.
  • PMOD connections to support a variety of generic PMOD devices (Wi-Fi, Bluetooth, RF, motor control etc…).
Memory Storage
  • Micro SD card slot
  • 512KB Serial EEPROM (Renesas)
  • 256KB On-chip Flash Memory (program)
  • 8KB On-Chip Flash Memory (Data)
  • 8Mbit Serial Flash for Web Server data storage (Micron)
Digital Sensors
  • 3 – Axis Accelerometer (ADI)
  • Temperature Sensor (ADI)
  • Ambient Light Sensor (CEL)
Power Control
  • FET Circuit for DC output
  • Fully isolated TRIAC Circuit for AC output with Zero Crossing Detector
User Code and Application Debugging
  • On-board debugger for high-quality source code debugging (TK interface)
  • User circuit breadboard area (located underneath E Ink unit)

Package Content

  • 32MHz RL78/G14 MCU board with integrated debugger and huge peripheral set including Wi-Fi, E Ink display, matrix LCD, audio ports, IR ports, MC port, FET and isolated Triac interfaces
  • USB Debugger Cable
  • 4 factory demos showcasing several Wi-Fi and portal operating modes
  • Quick-Start Guides
  • Inserted in a convenient plastic clamshell


What is PMOD™?

PMODs™ are small I/O interface boards that offer an ideal way to extend the capabilities of our MCU evaluation and demo boards. It can be found on RDKs and RSKs. PMODs communicate with system boards using 6, 8 or 12-pin connectors. Pmods include sensors, I/O, data acquisition & conversion, connectors, external memory, and more.

  • Convenient low pin-count daughter card format
  • Peripheral Module: PMOD
  • Trademarked by Digilent Inc. (
  • Low cost (connector/cards)
  • Open and royalty free
  • Typically 12-pin connector
    • 6-pin format also available
  • 2 slots in each RDK
    • UART/SPI/I2 C
  • Provide power to cards
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Partner Vendors

The Renesas Demonstration Kit for RL78/G14 was made possible by a joint effort by Renesas and the following partners (in alphabetical order):


Analog Devices offers the broadest MEMS inertial sensor portfolios in the industry, including high performance low-g accelerometers, high-g accelerometers, gyroscopes, and fully integrated Inertial Measurement Units (IMUs). ADI's MEMS portfolios now include high performance analog and digital out MEMS microphones.

On the RL78/G14 RDK, the on-board ADI silicon microphone ADMP401 is connected to the RL78/G14 A/D converter using an ADI SSM2167 low voltage microphone preamplifier. Analog Devices also supplied the ADXL345 3-Axis Accelerometer, the ADT7420 temperature sensor, as well as the ADM3101E RS-232 line driver.



E Ink Corporation is the creator of electronic ink — the optical component of a proprietary film used in Electronic Paper Displays. Although futuristic in concept, electronic ink is a straightforward fusion of existing knowledge in chemistry, physics and electronics. E Ink displays offer high contrast, superior paper-like readability and low power consumption, drawing power only when switching the display.



Future Designs, Inc. is a design and technical services organization founded in 1989 specializing in Embedded Design and Development. Their team of engineers and technical personnel can assist you in your Electrical, Mechanical, Software, Manufacturing and Systems engineering requirements.


Future Designs, Inc. provided the hardware customization, schematic capture, PCB design and layout, manufacturing, and Supply Chain Management services for the RL78/G14 RDK.



GainSpan is the leading semiconductor solutions company in low power Wi-Fi and Wi-Fi connectivity for the Internet of Things. Its easy-to-use system-on-chip (SoC), modules and software let customers leverage the large installed base of Wi-Fi access points and smartphones to create connected products for healthcare, smart energy and control/monitoring in industrial, commercial and residential markets. The solutions feature an ultra-low power SoC that consumes a few µA of standby current and goes from standby to active mode in a few


[Related Product]
Wi-Fi Sensor Application Development Kit "GS-ADK-RenesasG14TLAS-WEB"



IAR Embedded Workbench with its optimizing C and C++ compiler provides full support for RL78 devices and generates very compact and efficient code. Embedded Workbench is the tool suite of choice for the RL78 and the 16kB Kickstart edition is included with the RL78 RDK. Here are some highlights of Version 2.0:


Power debugging, Timeline, Position independent code and data, Improved speed optimizations, E1/E20 emulator support improvements, Renesas TK debugger support, Improved support for threaded environments, Example projects with RPDL support


IAR provides two versions for evaluation: 30 Day Evaluation Edition, 16kB Kickstart Edition.


Download IAR Embedded Workbench for Renesas RL78



Micrium provides the highest quality embedded software components by way of cleanest source code, unsurpassed documentation and customer support. Starting with Micrium's flagship product, uC/OS, through its complete line of software, Micrium shortens time to market throughout all product development cycles and builds products that address today's increased design complexity.



NDK has grown to become the leading company among quartz crystal device manufacturers with its lineup of high-precision, high-reliability, compact crystal devices that anticipate the next generation of customer needs. Under the banner of "quality, cost, and speed," NDK aims to establish itself as the industry's technology leader and the most trusted customer brand.



Okaya Electric America is a global provider of a wide range of LCD modules and display technologies including: Character, Graphic, Color TFT, and OLED display panels. Most of Okaya's standard TFT, Graphic, and OLED display modules are available with highly accurate Touch Panel technology. If available standard products do not meet your needs, Okaya also offers extensive options for creating Custom LCD products. These customizations include Sunlight Readability modifications for outdoor applications.

Okaya provided the 96 x 64 backlit graphics LCD.



Total Phase manufactures powerful and affordable USB, I2C, SPI, and CAN tools for embedded systems engineers. The complete line of Total Phase host adapters and protocol analyzers are the development and debugging tools of choice for Fortune 500 companies, small businesses, and research institutions all over the world.

The RL78/G14 RDK includes the Total Phase 'Beagle' debug header. The Beagle I2C/SPI Protocol Analyzer is a non-intrusive USB-based bus monitor that can capture, display, and filter I2C and SPI data as it appears on the bus. Using both the Data Center Software and Beagle analyzer, users can easily view I2C bus traffic (up to 4 MHz) and SPI bus traffic (up to 24 MHz) in real time. Additional functionality allows engineers to filter data against a wide variety of parameters, or instantly search for specific hexadecimal or ASCII data patterns during a live capture.



Exosite is a cloud data platform provider focused on data monitoring and management for embedded devices. Our cloud data Platform provides the tools to securely collect data from any remote source. We process and deliver filtered results to the end user - simply connect your device to our cloud data Platform and begin receiving real time, actionable information anywhere, anytime, through powerful widgets on our website interface.


Exosite Cloud support for the RL78/G14

Renesas, Gainspan, and Exosite have worked together to make it easy to connect the RL78/G14 Renesas Development Kit to the cloud. Cloud capable software runs on the RL78/G14 RDK so you can create your own connected products.


You can create your own web dashboards that enable you to see and control the status of your RDK from anywhere in the world. Use your web portal account to setup alerts, share your data, graph your results, acquire API access keys, and manage access. Build on the open source embedded API libraries and examples to launch your own cloud connected products.


With cloud connectivity, you can build connected products to:


  • Quickly prototype
  • Share and store real world data
  • Network new and existing devices
  • Manage field deployed products
  • Create interactive customer apps
  • Enable real-time business decisions



Creating an account on and connecting your device to the cloud takes less than 10 minutes. Sign up for a free web portal account at


Watch how easy it is, in the four-minute introduction video below.


Below you will find information to support the development of your application.


Information supporting development tools

Title Description
My Renesas Create a My Renesas account to use our tool download services,receive e-newsletter/update notifications, and take advantage of our other services.
e-learning Information for studying and learning about microcontrollers and microprocessors.
FAQ Frequently asked questions and useful hints for development.
Forum A forum and community site to share technical information,
questions and opinions with others who use Renesas MCU's.
Tool News Tool release information and other important information.
Operating Environment Information on system requirements and operating environment for the latest version of tools.
Tool Environmental Information Information on RoHS compliance of tools.
Info on Discontinued Products A list of Renesas software and tools that have been discontinued and are no longer being offered for new projects.

Tool Information

Tools Orderable Part Number (s) Production Status Manufacturer Suggested Single Tool Price
Description Distributor Stock Distributors Distributor Purchase Buy Direct
YRDKRL78G14 Mass Production Renesas call 1 Renesas demonstration Kit for RL78G14 2 Digi-Key -
3 Mouser

Note: Distributor Prices may vary from the stated budgetary price. The pricing and availability information on this site is based on information provided by Renesas’ authorized distributors and is subject to change without notice. By selecting a distributor from this page, you will be redirected from the Renesas site to the distributor’s website to complete a purchase. The distributors are independent from Renesas and maintain their own terms and conditions of sale. Renesas disclaims all representations and warranties, express and implied, with respect to transactions between distributors and their end customers.