Overview

Description

The RX261 group is a 32-bit microcontroller that delivers outstanding power efficiency, advanced touch functions, and robust security. It is suitable for a wide range of applications including consumer electronics, industrial automation, building automation, and battery-powered products.

The RXv3 core delivers a high performance of 355CoreMark at 64MHz operation. Active current is 69μA/MHz, and standby current is 1μA. Power consumption can be minimized during intermittent operation by using a snooze mode that allows peripheral functions to operate during standby.

The third-generation capacitive touch sensing unit (CTSU2SL) is included as an HMI function. The CTSU2SL supports multi-frequency scanning to reduce false detection due to external noise, active shield to suppress the effects of water on the electrodes, the automatic judgment function to detect touch events without CPU activation, and the MEC function to reduce touch measurement time and current consumption for multiple electrodes.

The RSIP-E11A is also equipped with a full range of security features, with built-in AES, ECC, and SHA engines. Management functions are provided to prevent unauthorized use of the cryptographic engine and leakage of keys. In addition, it has the area protection function that allows the user to set a non-rewritable area on the code flash memory. This is ideal for storing secure boot programs, etc.

Features

  • 64MHz RXv3 core (355CoreMark)
  • Low power (Active: 69μA/MHz, Standby: 1μA)
  • Max. 512KB code flash memory, 128KB SRAM
  • 8KB data flash memory that can store data just like an EEPROM
  • Operating voltage range: 1.6V to 5.5V
  • Operating temperature range: -40°C to 85°C or -40°C to 105°C
  • High-speed on-chip oscillator with +/- 1.0% accuracy
  • Capacitive touch sensing unit (CTSU2SL)
  • Security (RSIP-E11A, Flash memory protection)
  • USB full-speed (Host/Function), CAN FD, UART, SPI, I2C
  • 16-bit/32-bit general-purpose PWM timer, 16-bit low power timer, 16-bit compare match timer, 8-bit timer, RTC
  • 12-bit A/D converter, 8-bit D/A converter, comparator, temperature sensor
  • Package lineup from 48 to 100 pins (LFQFP, HWQFN)

Comparison

Applications

Applications

  • Consumer Electronics
  • Building Automation
  • Industrial Automation
  • Medical & Healthcare

Documentation

Design & Development

Software & Tools

Software & Tools

Software title
Software type
Company
RI600V4 Real-time OS for RX Family
μITRON4.0 Specification real-time OS for RX Family [Required IDE : e2 studio, CS+] * RI600V4 is not generally promoted to U.S. and European customers. Customers in U.S. and Europe who are interested in RI600V4 are requested to contact our regional marketing departments for details.
ITRON OS Renesas
RI600PX Real-time OS for RX Family
μITRON4.0/PX Specification real-time OS for RX Family [Required IDE : CS+] * RI600PX is not generally promoted to U.S. and European customers. Customers in U.S. and Europe who are interested in RI600PX are requested to contact our regional marketing departments for details.
ITRON OS Renesas
e² studio - Information for the RX Family
Eclipse-based Renesas integrated development environment (IDE).
IDE and Coding Tool Renesas
C/C++ Compiler Package for RX Family [CC-RX]
C/C++ Compiler Package for RX Family [IDE: CS+, e² studio, High-performance Embedded Workshop]
Compiler/Assembler Renesas
RX Smart Configurator
RX Smart Configurator is a utility for combining software in ways that meet your needs. It simplifies the embedding of Renesas drivers in your systems through supports for importing middleware and drivers and configuring pins.
Solution Toolkit 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™]
Solution Toolkit Renesas
QE for Display: Development Assistance Tool for Display Applications
This development assistance tool supports the development of embedded systems which use the LCD display functions of display controllers from Renesas. [Plugin for Renesas IDE "e² studio"] [Standalone Version] [Support MCU/MPU:RZ, RX, RA]
Solution Toolkit 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]
Emulator 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]
Emulator Renesas
CS+
Renesas integrated development environment (IDE) [Support MCU/MPU: RH850, V850, RX, RL78, 78K0R, 78K0] (Note: CS+ is not generally promoted to U.S. and European customers.) (Note: To use Smart Configurator on CS+ for RL78/G23 and RX family MCUs, install the Smart Configurator for each MCU family separately downloading from ”Design & Support” > ”Development Tools” > ”Smart Configurator”)
IDE and Coding Tool Renesas
CS+ Partner OS Aware Debugging Plug-in
Features for task level debugging of real-time OS applications [Plugin for Renesas IDE CS+] [Support MCU/MPU: RX, RL78]
Plug-in, OS Aware Debugging, Etc. Renesas
Simulator for CS+ of RX Family
Simulator for CS+ of RX Family [Support IDE : CS+] (Note: This product is included in Compiler Package and is not available separately.)
Simulator 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]
Programmer (Unit/SW) 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, Power Management, Renesas USB Power Delivery Family, ICs for Motor Driver/Actuator Driver, V850, 78K0R, 78K0]
Programmer (Unit/SW) Renesas
External Flash Definition Editor
Utility for downloading data to external flash memory (for emulators)
Other Emulators and Options Renesas
Simulator for e² studio of RX Family
Simulator for e² studio of RX Family [Support IDE : e² studio] (Note: This product is included in the Renesas IDE "e² studio" and is not available separately.)
Simulator Renesas
DSP Library for RX Family
Software library that implements numeric operation function used in DSP with general purpose MCU
DSP / FFT Renesas
RX Driver Package
Device driver set for the RX Family (including major middleware). Target devices : RX130, RX23W, RX231, RX24U, RX64M, RX65N, RX66T, RX71M, RX72M etc.
Software Package Renesas
e² studio Partner OS Aware Debugging
Standard debugger in e2 studio for supporting task level debugging of real-time OS applications.
Plug-in, OS Aware Debugging, Etc. Renesas
Security Key Management Tool
Key wrapping tool for key management systems using Renesas security IP. Enables secure installation and update of user application and device lifecycle management (DLM) keys.
Solution Toolkit Renesas
RX Family Renesas FreeRTOS
FreeRTOS™ software platform for RX MCUs that makes it easy to create applications using FreeRTOS™ with Firmware Integration Technology (FIT).
FreeRTOS Renesas
FAT File System [M3S-TFAT-Tiny] for the RX Family
FAT file system for RX Family
File System Renesas
Sound Playback/Compression System [M3S-S2-Tiny] for RX Family
Sound playback system for RX Family
Sound / Voice Renesas
M3S-DATFRX
Data Flash Driver for RX Family
On-chip Flash Memory Renesas
JPEG Encode/Decode Library All-Software JPEG Software Library
All-Software JPEG Software Library that comprises the JPEG Decoder and the JPEG Encoder
Imaging Renesas
SPI/QSPI Serial Flash Memory, QSPI Serial Phase Change Memory Driver
Device Driver for SPI and QSPI Serial Flash Memory and QSPI Serial Phase Change Memory
Serial Memory Renesas
SPI Serial EEPROM Driver
Device Drivers for SPI Bus Serial EEPROM R1EX25xxx Series and HN58X25xxx Series
Serial Memory Renesas
Crypto Library
Robust encode library to ensure security for all types of system developments
Security / Crypto Renesas
Sub-GHz/Wi-SUN Protocol Stack
Software stack for Sub-GHz/Wi-SUN wireless network applications
Protocol Stack Renesas
USB Drivers
Device drivers for USB communication using USB interface with built-in microcomputer and USB ASSP
USB Renesas
Reality AI Utilities
Plug-in module for Renesas e² studio
Solution Toolkit Renesas
I2C Serial EEPROM Driver
Device Drivers for I2C Bus Serial EEPROM R1EX24xxx Series, R1EV24xxx Series and HN58X24xxx Series
Serial Memory Renesas
32 items

Sample Code

Boards & Kits

Models

Videos & Training

Getting Started with EK-RX261

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.

Chapter's Title

00:00 Opening
00:10 An overview of RX261
01:27 An overview of EK-RX261
03:09 How to get started with QSEP

Oscillator Information

Please search for your oscillator on its manufacturer's site linked below. If you require optimal oscillation circuit constants for your particular system, please ask the manufacturer of the oscillator.

For main clock oscillator/sub-clock oscillator:
KYOCERA: Please click the "Crystal Part Number" links for recommended circuit constants.
Murata Manufacturing: Please click the "Circuit Info." button for recommended circuit constants.
NIHON DEMPA KOGYO: Please click the PDF icon in the "Test Data" column for recommended circuit constants.

For information on oscillators, please also refer to the following application note.
Design Guide for Main Clock Circuits and Sub-Clock Circuits Rev.1.01 (PDF | English, 日本語)