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 |
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| 64-bit version | 2026-04.2 | May 20, 2026 |
| 32-bit version (Note1) | V7.8.0 | Apr 20, 2020 |
Note
- Henceforth, only the 64-bit version of the e² studio is to have regular updates. Updates to the 32-bit version of the e² studio, on the other hand, will be limited to essential modifications.
- Details of upgrade (See Tool News)
- Operating Environment
- How to install (User's Manual chapter 2)
Information on Usage
e² studio Integrated Development Environment User's Manual: Getting Started Guide RX, RL78, RH850 Family Rev.1.00 (PDF | English, 日本語)
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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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
777 KB
日本語
AI-generated Summary:
This section explains how to set up and build the CUnit testing framework in e² studio for Renesas CC-RX. It instructs downloading CUnit version 2.1-2, creating a new Renesas CC-RX C/C++ Library Project, and configuring the project settings. It details copying necessary source and header files into the project, adjusting compiler settings to use C99, and creating a custom time.h header due to CC-RX limitations. Finally, it guides building the project to generate the static library file CUnit.lib.
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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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| Application Note |
PDF
719 KB
日本語
Integrated Development Environment e² studio supports creating, building, and debugging projects for the RH850 family. The RH850 family includes devices that support multi-cores, and e² studio allows you to create projects for these multi-core devices. However, currently only the method of treating all cores as a single project is supported.
This document describes how to create projects for the RH850 family of multi-core devices as multiple projects.
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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 | |
| Tool News - Release | PDF 181 KB 日本語 | |
| 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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| Manual - Development Tools | PDF 8.52 MB 日本語 | |
| Tool News - Release | PDF 175 KB 日本語 | |
| Release Note | PDF 2.91 MB | |
| Application Note |
PDF
852 KB
日本語
AI-generated Summary:
Cyclomatic complexity measures the complexity of source code, indicating software quality by quantifying how complex the code is. Higher values suggest increased complexity and a greater chance of bugs. Using e² studio, cyclomatic complexity can be measured via two external tools: SourceMonitor and Lizard. These tools integrate with e² studio through its external tools feature, allowing users to measure and display complexity results directly within the IDE. The document details installation, configuration, and execution steps for both tools on a Windows 10 environment with e² studio 2024-01.
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| Release Note | PDF 2.64 MB | |
| Tool News - Release | PDF 170 KB 日本語 | |
| 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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| Tool News - Release | PDF 176 KB 日本語 | |
| Tool News - Release | PDF 217 KB 日本語 | |
| Tool News - Release | PDF 182 KB 日本語 | |
| Tool News - Release | PDF 129 KB 日本語 | |
| Tool News - Release | PDF 154 KB 日本語 | |
| 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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| Tool News - Note | PDF 160 KB 日本語 | |
| 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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39 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 Rh850-family products.
For an overview of the functions and features of the e² studio, refer to e² studio (the general page).
Compilers for the RH850 Family
| Supported Compiler | Information on Usage |
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| Renesas C Compiler Package for RH850 Family [CC-RH] |
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| IAR IAR C/C++ Compiler for Renesas RH850 |
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| Green Hills Software Green Hills Compiler |
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Note:
- Supported by e² studio 2022-07 and later versions.
- CC-RH V2.06.01 supports Ubuntu version 20.04. Support for other versions of Ubuntu is under consideration for the next version.
Debugging tools for RH850 Family
Note
- The E2 emulator can be used with V7.0.0 and later versions of the e² studio. The usable functions are the same as for the E1.
Support
Support Communities
- IDE selection for RH850 Microcontroller
Which IDE is suitable for RH850 Microcontroller
Sep 18, 2023 - Remote debugging GDB Server (e2-server-gdb.exe) for RH850 family
... main -uSyncMode=async -uTraceCore=PE0 -uFirstGDB=main --english --gdbVersion=12.1CoreSettings::getCoreEnabled - Empty Enabled ListCoreSettings::getCoreEnabled - Empty Enabled ListCoreSettings::getCoreEnabled - Empty Enabled List Connecting to RH850 Target GDBServer endian : littleStarting target connection Version Information:GDB action 'connect to target', has failed with error code, 0x80080008 Could you check it for ...
Jun 27, 2025 - Tool Chain: e2 Studio vs CS+
Dear Forum members, I want to decide for using CS+ or e2 Studio tool chain for my development for RH850 family (R7F7017603AFP). Both tool chains support my selected MCU. I have heard few pros and cons for both these tool chains. Again both these tool chains are from Renesas only ...
Aug 11, 2023
Knowledge Base
- Where Can I Find the e² studio Tutorials?
... com/e2studio-rze2 studio for RL78 Family: https://www.renesas.com/e2studio-rl78e2 studio for RX Family : https://www.renesas.com/e2studio-rxe2 studio for RH850 Family: https://www.renesas.com/e2studio-rh850 Suitable Productse² studio 日本語
Dec 28, 2022 - How can I generate combine single to multiple Intel hex file?
... from that with the lowest address. Example: To generate file3.mot by combining file1.mot and file2.mot"C\...\rlink.exe" file1.mot file2.mot -form=stype -output=file3.mot An information file (link map file) which includes the details of the appending will be output if the –list option ...
Jul 27, 2020 - Configure multiple CRC operations
... of "CRC operations" under "CRC Operation" in CC-RL Property.The CRC Operations dialog will appear, so please configure the necessary number of output address information in the Output address list. If you are using e2 studioOpen the project properties dialog in one of the following ways: Right-click ...
Mar 27, 2026
Support Communities
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Knowledge Base
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