The RA4E2 Fast Prototyping Board comes equipped with an R7FA4E2B93CFM microcontroller and is an evaluation board specialized for prototype development for a variety of applications. It has a built-in SEGGER J-Link™ emulator circuit so you can write/debug programs without additional tools. In addition, with Arduino Uno and Pmod™ interfaces included standard and through-hole access to all pins of the microcontroller, and so on, it has high expandability.

Sample software is available to demonstrate the functionality of the RA4E2 MCU and for connecting between the RA4E2 Fast Prototyping Board and various wireless modules or various sensor modules.

Please use Bluetooth®, LoRa® and Wi-Fi according to the radio regulations of each country during use.


  • Equipped with an RA4E2 32-bit microcontroller 64-pin, ROM: 128KB, RAM: 40KB
  • No additional tools are required for program debugging/writing with the built-in SEGGER J-Link™ emulator circuit
  • Through-holes with access to all of the pins of the microcontroller
  • Arduino Uno and Pmod™ interfaces come standard
  • Support for various RA4E2 software and tools



Type Title Date
Quick Start Guide PDF 1.17 MB 日本語
Application Note PDF 797 KB
Flyer PDF 412 KB
Flyer PDF 482 KB 日本語
Manual - Development Tools PDF 2.51 MB 日本語
Schematic Log in to Download ZIP 35.22 MB
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Design & Development

Sample Code

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