The EK-RA4M3 evaluation kit enables users to effortlessly evaluate the features of the RA4M3 MCU Group and develop embedded systems applications using Renesas' Flexible Software Package (FSP) and e2 studio IDE. Utilize rich on-board features along with your choice of popular ecosystem add-ons to bring your big ideas to life.

Getting Started

Running the Quick Start Example Project

  1. The EK-RA4M3 board comes pre-programmed with a Quick Start example project (source code provided in the EK-RA4M3 example project bundle).
  2. Power up the EK-RA4M3 board through the USB debug port (J10) using the micro USB device cable connected to a 5V power source. The white power LED will light up.
  3. The Quick Start example project will begin to execute blinking the blue user LED.
  4. Refer to the EK-RA4M3 – Quick Start Guide to explore additional functionality of the Quick Start example project.

Developing Embedded Applications

  1. Modifying the Quick Start example project – Refer to the EK-RA4M3 Quick Start Guide for instructions on importing, modifying and building the Quick Start example project.
  2. Start with one of the many other example projects (provided in the EK-RA4M3 example project's bundle) – Choose from many example projects to learn about different peripherals of the RA4M3 MCU group. These example projects can serve as excellent starting points for you to develop your custom applications.

Building Custom Hardware

  1. Start by building a functional prototype - Utilize the EK-RA4M3 board with your choice of ecosystem add-ons.
  2. Build custom hardware – Develop custom hardware by referring to the design and manufacturing information provided in the EK-RA4M3 design package.


The EK-RA4M3 kit meets the following certifications/standards. Refer to the EK-RA4M3 user manual for the disclaimer, precautions and more details on the certifications.

EMC/EMI Standards

  • FCC Notice (Class A) – Part 15
  • Innovation, Science and Economic Development Canada ICES-003 Compliance: CAN ICES-3 (A)/NMB-3(A)
  • CE Class A (EMC Directive 2004/108/EEC)
  • Taiwan Chinese National Standard 13438, C6357 compliance, Class A limits
  • Australia/New Zealand AS/NZS CISPR 32:2015, Class A

Material Selection, Waste, Recycling, and Disposal Standards

  • EU RoHS
  • China SJ/T 113642014, 10-year environmental protection use period

Safety Standards

  • UL 94V-0


  • Special Feature Access
    • 32MB external Quad-SPI Flash
  • MCU Native Pin Access
    • 100MHz, Arm Cortex®-M33 core
    • 1MB Code Flash, 128KB SRAM
    • 144 pins, LQFP package
    • Native pin access through prototype friendly male headers
    • MCU and USB current measurement points
  • Ecosystem & System Control Access
    • USB Full Speed host and device
    • Multiple 5V input sources
      • USB (debug, Full Speed)
      • External power supply
    • Debug modes
      • Debug on-board (SWD)
      • Debug In (ETM, SWD and JTAG)
      • Debug Out (SWD)
    • User LEDs and buttons
      • Three user LEDs (red, blue, green)
      • Power LED (white) indicating availability of regulated power
      • Debug LED (yellow) indicating the debug connection
      • Two user buttons
      • One reset button
    • Five most popular ecosystem expansions
      • MikroElektronika™ mikroBUS connector
      • SparkFun® Qwiic® connector
      • Two SeeedGrove® system (I2C and analog) connectors
      • Two Digilent Pmod™ (SPI and UART) connectors
      • Arduino™ (Uno R3) connector
    • MCU boot configuration


Title language Type Format File Size Date
star EK-RA4M3 Quick Start Guide 日本語 Quick Start Guide PDF 2.60 MB
EK-RA4M3 Errata 日本語 Manual - Development Tools PDF 627 KB
EK-RA4M3 v1 User's Manual  日本語 Manual - Hardware PDF 4.05 MB
EK-RA4M3 Example Project Bundle
Related Files: Sample Code
Application Note PDF 91 KB
Renesas RA4M3 Group of 32-bit MCUs with Arm® Cortex®-M Core 日本語 Flyer PDF 423 KB
Renesas RA Family of 32-bit MCUs with Arm® Cortex®-M Core Flyer 日本語 Flyer PDF 391 KB
An Introduction to Renesas Advanced (RA) MCU Kits Presentation PPSX 35.87 MB
Deep Dive into the EK-RA4M3 Kit Presentation PPSX 36.17 MB
EK-RA4M3 v1 Design Package Schematic ZIP 22.45 MB


Title language Type Format File Size Date
EK-RA4M3 Example Project Bundle - Sample Code
Related Files: Application Note
Sample Code ZIP 11.99 MB

select_allSoftware & Tool Pages

Title Type Description Company
e² studio IDE and Coding Tool Eclipse-based Renesas integrated development environment (IDE).
[Support MCU/MPU: RA, RE, RX, RL78, RH850, Renesas Synergy, RZ]
(Note: You need to install compiler separately as an additional software)
(Note: No separate e² studio installation required for RA FSP, this will be installed as part of the FSP with e² studio installer (Platform Installer) on GitHub.)
Renesas Flash Programmer (Programming GUI) Programmer (Unit/SW) Flash memory programming software [Support MCU/MPU and devices: RA, RE, RX, RL78, RH850, Renesas Synergy, Power Management, Renesas USB Power Delivery Family, ICs for Motor Driver/Actuator Driver, V850, 78KR, 78K0] Renesas
Flexible Software Package (FSP) Software Package FSP is an enhanced software package designed to provide easy-to-use, scalable, high-quality software for embedded system designs using Renesas RA Family of Arm Microcontrollers.
Note: FSP with e² studio Installer (Platform Installer) will install the e² studio tool, FSP packs, GCC toolchain and Segger J-Link drivers required to use this software. No additional installations are required.