Overview
Description
The EK-RX261 is the evaluation kit for the RX261 MCU, providing an efficient tool to evaluate the RX261 MCU. This kit comes with all the hardware and software needed to start evaluation immediately after unboxing.
The EK-RX261 enables debugging key functions of the RX261. In addition, it can be connected to various expansion boards quickly to easily expand the board's functionality.
This board features:
- Hardware and software ready for evaluation right out of the box
- On-board debugger (E2 OB): program writing and debugging are possible simply by using a USB cable to connect the board to a PC.
- Ready-to-use software package includes peripheral function drivers, middleware, and guidance documentation.
- Ability to develop prototypes for a wide range of requirements.
- On-board popular ecosystem connectors: easily connect to expansion boards such as sensor, wireless, LCD, motor boards, etc., enabling to develop wide range of applications quickly.
- 2 capacitive touch buttons to evaluate latest touch IP for modern HMI applications.
- CAN FD, USB Full Speed to develop industrial/building automation application prototypes.
- Multiple power options to enhance power supply flexibility to meet various needs.
Getting Started
Developing Embedded Application
The software development to evaluate the RX261 MCU’s function can be started immediately using the e2 studio IDE and the RX software package that includes peripheral function drivers, middleware, and usage documentation.
Get familiar with EK-RX261 through the Quick Start example project – The Quick Start example project shows:
- Communication between EK-RX261 and Host PC through USB to Serial interface
- Control User LEDs via User Buttons
Refer to the EK-RX261 Quick Start Guide for details.
- Start with one of the application projects – Various sample projects for RX261 are available. These example projects can be downloaded from "Design & Development" and serve as excellent starting points for you to develop your custom applications.
Building a Custom Hardware
- Start by building a functional prototype – Utilize the EK-RX261 board with your choice of hundreds of popular ecosystem add-ons.
- Build custom hardware – Develop custom hardware by referring to the design and manufacturing information provided in the EK-RX261 Design Package.
Features
- MCU Native Pin Access Area
- R5F52618BGFP MCU
- 64MHz, RXv3 core
- 512KB Code Flash ROM, 8KB Data Flash ROM, 128KB RAM
- 100 pins, LFQFP package
- Native pin access through male pin headers
- MCU current measurement
- Special Feature Access Area
- CAN FD (data phase up to 5Mbps)
- 2 capacitive touch buttons
- Ecosystem & System Control Access Area
- USB Full Speed host and device
- USB-Serial Converter Interface
- Multiple 5V input sources
- USB (Debug, Full Speed, USB Serial Port)
- External power supply
- E2 OB on-board programmer and debugger
- Debug modes
- Debug On-board (FINE) – via E2 OB
- Debug In (FINE)
- 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 (not fitted)
- Two SeeedGrove® system (I2C and Analog) connectors (not fitted)
- Two Digilent Pmod™ (SPI/UART/I2C) connectors
- Arduino™ (Uno R3) connector
- MCU mode configuration jumper
- Kit Contents: EK-RX261 board, Micro USB device cable (type-A male to micro-B male), Micro USB host cable (type-A female to micro-B male)
Applications
Documentation
Featured Documentation
Log in required to subscribe
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| Type | Title | Date |
| Quick Start Guide | PDF 1.33 MB 日本語 | |
| Manual - Development Tools | PDF 2.74 MB 日本語 | |
| PCB Design Files | EK-RX261 v1 - Design Package
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| Application Note |
PDF
3.99 MB
日本語
The MCUboot FIT module is a FIT module created on the basis of MCUboot. When users create a bootloader, they can easily embed MCUboot into it by using this FIT module.
In addition, MCUboot FIT uses Renesas security IP (TSIP and RSIP), which enable secure user key concealment and faster decryption.
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| Application Note |
PDF
3.28 MB
The DA16200/DA16600 is a Wi-Fi module that supports diverse connected applications with efficiency, security, and enhanced user experience on Renesas RX Family microcontrollers. This application note describes the usage of DA16200/DA16600 PMOD module, including API information, configuration guidelines, which conforms to the Firmware Integration Technology (FIT) standard and step-by-step instructions for executing demo applications with TCP, MQTT, and HTTP protocols on RX MCU boards.
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| Application Note |
PDF
2.19 MB
The DA14531/DA14535 is a Bluetooth low energy SoC that supports diverse connected applications with efficiency, security, and enhanced user experience on Renesas RX Family microcontrollers. This sample package includes an application note describing the usage of the DA14531/DA14535 PMOD module, which conforms to the Firmware Integration Technology (FIT) standard, the DA1453x BLE FIT module itself, and demo applications on CK-RX65N v2 in both peripheral and central roles.
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| Application Note |
PDF
1.54 MB
The PTX105R is an NFC transceiver module that enables efficient, seamless short-range wireless communication on Renesas RX MCUs. This application note provides a concise overview of the PTX105R PMOD module, covering its APIs, configuration flow, and FIT-compliant software structure, while also outlining the procedure for running demo applications featuring NDEF read/write, power-mode optimization, and flexible data exchange on EK-RX261 board.
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| Application Note |
PDF
12.71 MB
日本語
By using the FIT module, users can easily incorporate firmware update functionality and secure boot functionality into their applications.
The firmware update module provides middleware that functions as a component when adding firmware update functionality to the user's system.
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| Application Note |
PDF
1.88 MB
日本語
AI-generated Summary:
The sample program implements touch key functionality and serial LCD display using EK-RX261 v1 and an external LCD module. It simulates a microwave oven user interface with touch buttons and a 240x320 LCD. The system integrates RX261 MCU, CTSU2SLa touch sensing, RSPI SPI communication, and emWin GUI middleware. The software stack includes touch drivers, GUI middleware, and RSPI drivers, enabling efficient control and display. The document details hardware setup, program flowcharts, peripheral configurations, and demonstration procedures for cooking, defrosting, and recipe selection modes.
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9 items
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Design & Development
Software & Tools
Software & Tools
| Software title
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Software type
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Company
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| C/C++ Compiler Package for RX Family [CC-RX] C/C++ Compiler Package for RX Family [IDE: CS+, e² studio, High-performance Embedded Workshop]
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Compiler/Assembler | Renesas |
| QuickConnect Platform QuickConnect platform enables fast prototyping by providing compatible hardware and software building blocks.
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Software and Hardware Development Tools | Renesas |
| e² studio - Information for the RX Family Eclipse-based Renesas integrated development environment (IDE).
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IDE and Coding Tool | Renesas |
| Renesas Flash Programmer (Programming GUI) Flash memory programming software [Support MCU/MPU and devices: RA, RE, RX, RL78, RH850, RISC-V MCU, Renesas Synergy, DA1453x, DA1459x, DA1469x, DA1470x, DA148xx, Power Management, Renesas USB Power Delivery Family, ICs for Motor Driver/Actuator Driver, V850, 78K0R, 78K0]
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Programmer (Unit/SW) | Renesas |
| QE for Capacitive Touch: Development Assistance Tool for Capacitive Touch Sensors In developing embedded system using the capacitive touch sensor of MCUs, you can easily setup initial configurations of the touch interface as well as process the tuning of sensors, and reduce development time. [Plugin for Renesas IDE "e2 studio"] [Standalone Version] [Support MCU/MPU:RA, RL78, RX, Renesas Synergy™]
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Solution Toolkit | Renesas |
| PG-FP6 Flash memory programmer [Programming software: Dedicated GUI-based software, the "FP6 Terminal"] [Support MCU/MPU and devices: RA, RE, RX, RL78, RH850, RISC-V MCU, Renesas Synergy, Power Management, Renesas USB Power Delivery Family, ICs for Motor Driver/Actuator Driver, SuperH RISC engine, V850, 78K, R8C]
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Programmer (Unit/SW) | Renesas |
| E2 emulator Lite [RTE0T0002LKCE00000R] On-chip debugging emulator. Also available as a flash memory programmer. [Support MCU/MPU: RA, RE, RL78, RX, RISC-V MCU]
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Emulator | Renesas |
| E2 emulator [RTE0T00020KCE00000R] On-chip debugging emulator. Also available as a flash memory programmer. [Support MCU/MPU: RA, RE, RH850, R-Car D1, RL78, RX, RISC-V MCU]
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Emulator | Renesas |
8 items
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Sample Code
Sample Code
Filters
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| Type | Title | Date Date |
| Sample Code | RX Family MCUboot Firmware Integration Technology Application Notes Rev.1.02 - Sample Code
[Software=RX Driver Package|V1.49],[Toolchains=CC-RX|V3.07.00;GNURX|V8.3.0.202411;IAR Compiler for RX|v.5.10.1]
ZIP
92.22 MB
Application:
Appliances, Building Automation
Compiler:
CC-RX, GNURX, ICCRX
Function:
Driver or Library
IDE:
e² studio, IAR EWRX
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| Sample Code | RX Family US159-DA16XXXMEVZ Wi-Fi Control Module Using Firmware Integration Technology Rev. 1.41 - Sample Code
[Software=RX Driver Package|V1.50],[Toolchains=CC-RX|V3.07.00;GNURX|14.2.0.202505]
ZIP
31.79 MB
Application:
Consumer Electronics, Industrial
Compiler:
CC-RX, GNURX
Function:
Communication Interface
IDE:
e2 studio
The DA16200/DA16600 is a Wi-Fi module that supports diverse connected applications with efficiency, security, and enhanced user experience on Renesas RX Family microcontrollers. This application note describes the usage of DA16200/DA16600 PMOD module, including API information, configuration guidelines, which conforms to the Firmware Integration Technology (FIT) standard and step-by-step instructions for executing demo applications with TCP, MQTT, and HTTP protocols on RX MCU boards.
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| Sample Code | RX Family US159-DA1453xEVZ BLE Control Module Using Firmware Integration Technology Rev. 1.70 - Sample Code
[Software=RX Driver Package|V1.50],[Toolchains=CC-RX|V3.07.00]
ZIP
121.93 MB
Application:
Consumer Electronics, Industrial
Compiler:
CC-RX
Function:
Communication Interface
IDE:
e2 studio
The DA14531/DA14535 is a Bluetooth low energy SoC that supports diverse connected applications with efficiency, security, and enhanced user experience on Renesas RX Family microcontrollers. This sample package includes an application note describing the usage of the DA14531/DA14535 PMOD module, which conforms to the Firmware Integration Technology (FIT) standard, the DA1453x BLE FIT module itself, and demo applications on CK-RX65N v2 in both peripheral and central roles.
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| Sample Code | RX Family PTX NFC Control Module Using Firmware Integration Technology Rev. 1.20 - Sample Code
[Software=RX Driver Package|V1.50],[Toolchains=CC-RX|V3.07.00]
ZIP
17.27 MB
Application:
Consumer Electronics, Industrial
Compiler:
CC-RX
Function:
Communication Interface
IDE:
e2 studio
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| Sample Code | RX Family Firmware Update module Using Firmware Integration Technology Application Notes Rev.2.06 - Sample Code
[Software=RX Driver Package|V1.48],[Toolchains=CC-RX|V3.07.00;GNURX|14.2.0.202505;IAR Compiler for RX|v.5.20.1]
ZIP
156.61 MB
Application:
Consumer Electronics
Compiler:
CC-RX, ICCRX
Function:
Driver or Library
IDE:
e2 studio, GCC EWRX, IAR EWRX
By using the FIT module, users can easily incorporate firmware update functionality and secure boot functionality into their applications.
The firmware update module provides middleware that functions as a component when adding firmware update functionality to the user's system.
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| Sample Code | RX260, RX261 HMI sample program with touch keys and LCD Rev.1.00
[Software=RX Driver Package|V1.45],[Toolchains=CC-RX|V3.06.00]
ZIP
139.24 MB
日本語
Application:
Consumer Electronics, Human Machine Interface (HMI), Industrial
Compiler:
CC-RX
Function:
Evaluation Kit, HMI
IDE:
e2 studio
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| Sample Code | EK-RX261 Quick Start Example Project
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7 items
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Related Boards & Kits
Boards & Kits
Evaluation
FPB-RX261
Active
Fast Prototyping Board for RX261 MCU Group
The Fast Prototyping Board for RX261 MCU Group comes equipped with an RX261 MCU (R5F52618BGFP). The board is inexpensive for RX261 evaluation and prototype development of various applications. It has an emulator circuit so you can write/debug programs just by connecting it to PC with a USB... Read More
Recommended Documents:
Product Options
| Part Number | Status | Stock | Budgetary Price (USD) | Sampleable |
|---|---|---|---|---|
| RTK5EK2610S00001BE | Active | In Stock | 1u | $70.88 | Available |
Videos & Training
This video provides an overview of the RX261 and demonstrates how to quickly set up and get started with the EK-RX261. The EK-RX261 offers a robust ecosystem, enabling the development of prototypes across a wide range of applications using the RX261. To learn more, visit the EK-RX261 page.
Additional Videos
Certifications
The EK-RX261 meets the following certifications/standards. Refer to the EK-RX261 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
Partners
Zephyr Project
The Zephyr Project is an open-source, scalable real‑time operating system (RTOS) designed for resource-constrained embedded systems and supports a wide range of hardware architectures and development boards. For the Renesas RX261 Evaluation Kit, Zephyr provides focused documentation covering board features, supported peripherals, and basic build, flashing, and debugging workflows to help developers quickly get started.
Support
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.
