Overview
Description
e² studio is an Eclipse-based integrated development environment (IDE) for Renesas MCUs. In addition to Eclipse’s own powerful code editor, e² studio offers a rich range of extended functions. e² studio covers all development processes, from the downloading of sample code to debugging.
Release Information
| Architecture | Ver. | Released |
|---|---|---|
| 64-bit version | 2026-04.2 | May 20, 2026 |
- Details of upgrade (See Tool News)
- Operating Environment
- How to install: User's Manual Chapter 2
FAQ
Target Devices
Downloads
Please be sure to check software agreement before downloading e² studio installer.
Featured
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| Type | Title | Date |
| Upgrade - IDE | e² studio 2026-04.2 installer for Windows
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| Upgrade - IDE | e² studio 2026-04.2 installer for Linux
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2 items
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Documentation
Featured Documentation
Log in required to subscribe
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| Type | Title | Date |
| Release Note |
PDF
2.85 MB
The e² studio 2026-04.2 Release Note describes product information, supported devices and supported features such as toolchains, emulators, code generation (Smart Configurator), and Smart Manual. Refer to "What is new" section for new the features and improvements in this version. Notifications of known issues are found in 'Useful workarounds and information' and 'Open issues' section.
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| Tool News - Release |
PDF
174 KB
日本語
Tool news to announce the upgrade to the e² studio 2026-04.2. This document explains improvements of functionality and how to update. The main enhancements are upgrading eclipse/CDT, Smart Configurator and debugger features.
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| Application Note |
PDF
908 KB
日本語
AI-generated Summary:
This section explains how to set up and use CUnit version 2.1-2 with e² studio for Renesas RX using GCC. It details building the CUnit static library by downloading the package, creating a new Renesas RX C/C++ library project, configuring toolchain and device settings, and copying necessary source and header files. It also covers project configuration steps such as deleting unnecessary folders and adding include directories. Finally, it describes building the library to generate the static library file libCUnit.a, which can be used for unit testing in C/C++ projects.
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| Release Note |
PDF
2.92 MB
The e² studio 2025-12 Release Note describes product information, supported devices and supported features such as toolchains, emulators, code generation (Smart Configurator), and Smart Manual. Refer to "What is new" section for new the features and improvements in this version. Notifications of known issues are found in 'Useful workarounds and information' and 'Open issues' section.
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| Tool News - Release |
PDF
174 KB
日本語
Tool news to announce the upgrade to the e² studio 2025-12. This document explains improvements of functionality and how to update. The main enhancements are Renesas 365 support and adding supported devices.
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| Flyer |
PDF
1.04 MB
日本語
, 简体中文
e² studio is an integrated development environment consisting of the Eclipse-standard code editor and various extended functions such as functions for referencing manuals and technical information, Smart Configurator, which facilitates code generation and QE tools aiding application development.
Facilitates all development processes up to building in a seamless manner within a single environment with a Renesas compiler.
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| Release Note |
PDF
2.93 MB
The e² studio 2025-10 Release Note describes product information, supported devices and supported features such as toolchains, emulators, code generation (Smart Configurator), and Smart Manual. Refer to "What is new" section for new the features and improvements in this version. Notifications of known issues are found in 'Useful workarounds and information' and 'Open issues' section.
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| Tool News - Release |
PDF
163 KB
日本語
Tool news to announce the upgrade to the e² studio 2025-10. This document explains improvements of functionality and how to update. The main enhancements are updating the Smart Configurator (RX, RL78) and adding supported devices.
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| Release Note | PDF 3.25 MB | |
| Tool News - Release | PDF 184 KB 日本語 | |
| Release Note | PDF 3.09 MB | |
| Tool News - Release | PDF 194 KB 日本語 | |
| Manual - Development Tools | PDF 4.85 MB 日本語 | |
| Release Note | PDF 3.22 MB | |
| Tool News - Release | PDF 174 KB 日本語 | |
| Release Note | PDF 3.27 MB | |
| Tool News - Release | PDF 191 KB 日本語 | |
| Application Note |
PDF
666 KB
日本語
AI-generated Summary:
The document explains how to integrate and use IAR Systems compilers within the e² studio development environment for Renesas microcontrollers. It details the installation of IAR Embedded Workbench and IAR Eclipse plugins, project creation, build configuration, and build execution using IAR compilers. The guide focuses on the RA family with the IAR ARM compiler but applies similarly to other Renesas devices. It also recommends using standalone Flexible Software Package configurators for RA and RZ families to enhance development. The environment setup assumes Windows 10 64-bit, e² studio 2024-07, and IAR tools installed.
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| Release Note | PDF 3.64 MB | |
| Application Note |
PDF
678 KB
日本語
AI-generated Summary:
This document explains how to use Doxygen within the e* studio integrated development environment. It details the confirmed environment setup, including Windows 10, e* studio 2024-04, Doxygen 1.8.16 bundled with the Eclox plugin, and Graphviz 11.0.0. It guides users through installing the Eclox plugin via Eclipse Marketplace and configuring the Doxygen version in e* studio preferences to generate documentation efficiently. The document notes that Doxygen, Eclox, and Graphviz are third-party open-source tools without Renesas technical support.
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| Release Note | PDF 2.91 MB | |
| Release Note | PDF 2.64 MB | |
| Application Note |
PDF
980 KB
日本語
AI-generated Summary:
e² studio allows users to install, update, and add features or toolchains without rerunning the installer. It supports three installation types: Lite, Standard, and Custom, catering to different user needs from basic editing to advanced debugging. Updates can be performed via the installer or through the built-in update function, though adding device families or features requires separate procedures. The update process involves checking for updates, accepting licenses, and restarting the IDE to complete installation.
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| Application Note |
PDF
1.11 MB
日本語
AI-generated Summary:
This guide explains how to create and build CMake projects using e² studio. It covers installing necessary tools such as e² studio, CMake, and GNU Make, creating a new CMake project, and configuring the builder by disabling the default CDT Core Builder and adding CMake and Make commands. The instructions include setting up environment variables and specifying CMake command parameters to generate native build files from platform-independent CMakeLists.txt configurations.
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| Application Note |
PDF
2.26 MB
日本語
AI-generated Summary:
This document explains how to automate CUnit tests in Renesas e² studio using EGit and Jenkins. It covers creating a Git repository, pushing code changes via EGit, and setting up Jenkins to build and run CUnit tests automatically. The process includes configuring Jenkins to poll the repository, build the project, execute tests, and generate reports. It also details modifying the SampleC Unit project to link the CUnit static library and output test results to a file for automation.
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| Application Note |
PDF
2.00 MB
日本語
AI-generated Summary:
This section explains how to install and set up Jenkins on Windows 10 for standalone use. It covers downloading the Jenkins installer from the official site, running the installer, and starting Jenkins via localhost. The initial admin password is retrieved from a specific file to unlock Jenkins. Users can skip plugin installation initially and start using Jenkins immediately. It also describes how to add more users through the Jenkins UI under Manage Jenkins > Manage Users.
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| Application Note |
PDF
1.79 MB
日本語
AI-generated Summary:
This section explains how to install and configure EGit within the e² studio environment. It details selecting Git integration during e² studio installation, updating EGit via the Help menu, and adding the EGit update repository. The guide also covers setting user identification for Git commits by configuring user name and email in the preferences. Finally, it describes opening the EGit perspective to start using Git features within e² studio.
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27 items
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Design & Development
Videos & Training
This video demonstrates how to show or hide toolbar buttons for each perspective in e² studio.
Additional Details
See the table below for features of the software and tools available for use with the e² studio on RISC-V MCU products.
For an overview of the functions and features of the e² studio, refer to e² studio (the general page).
Code generation support and other useful functions for RISC-V MCUs
| Tool name | Description |
|---|---|
| Smart Configurator | A GUI-based tool that provides support for downloading and importing middleware for code generation and configuring various settings |
| Smart Browser | A function that allows you to easily search and show the latest version of the hardware manual, technical updates, application notes, and tool news for the Renesas microcontroller you are using |
Compilers for RISC-V MCUs
| Supported Compiler | Information on usage |
|---|---|
| Open Source ・LLVM for Renesas RISC-V MCU |
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Debugging tools for RISC-V MCU
- E2 Emulator
- E2 Emulator Lite
- Segger J-Link (Note)
Note
- Product from a Renesas partner
Support
Support Communities
- How can I program (upload code onto) Renesas microcontrollers? What programmers to use?
... programmers be used? I am trying to find more affordable programmers to the E2 Lite both from Renesas and third parties that would work with e2 studio and get my code onto these chips. I also have one more unrelated question, but is it possible to program (write code for ...
Dec 31, 2021
Knowledge Base
- Differences between e² studio and CS+ Integrated Development Environments
... studio, CS+. For more information, see the IDE Release Notes and the respective documentation. [Supported Device Families]e² studioCS+ (CS+ for CC) CS+ (CS+ for CA,CX) RX, RL78, RH850,RA, RZ, RE,Renesas Synergy™,RISC-V MCURX, RL78, RH850 RL78, 78K, V850 [Supported Compilers]e² studio ...
Oct 9, 2024
Support Communities
Get quick technical support online from Renesas Engineering Community technical staff.
Knowledge Base
Browse our knowledge base for helpful articles, FAQs, and other useful resources.
