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
Design & Development
Software & Tools
Sample Code
Boards & Kits
Models
ECAD Models
Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on the CAD Model links in the Product Options table. If a symbol or model isn't available, it can be requested directly from SamacSys.
Support
Support Communities
Get quick technical support online from Renesas Engineering Community technical staff.
Support Communities
-
RX261 - USB HID or CDC Peripherie (Sample for Windows)
Hello, we generate the USB HID Peripherie Code with the Smart Configurator. Now we need a communication with a windows PC, to send and receive some datas. Now we write a short Python Script to send USB Data to the RSKRX261 EVAL Board. We get all Information about the USB ...
May 12, 2025 -
FDCAN with RX261
Hello, I'am a new member of this forum and look forward to the exchange. currently I have a Problem with the CAN FD Sample and the CAN Masking. We use the Workbench IAR and I generate the main Code via the smart Configurator 2.24.0 Now I need ...
Feb 26, 2025
FAQs
-
Snooze mode of RX261 and RX260
... series of processes requires power to operate CPU, which is a challenge when optimizing power consumption.The smart wake-up solution that uses the snooze mode and capacitive touch sensing unit of the RX261 and RX260 contributes to reducing power consumption in applications requiring intermittent operation such as the above.
Oct 22, 2024 -
About RX261 and RX260
... highly reliable communication functions: The RX261 only is equipped with USB full speed (host/function) and CAN FD, so the communication functions are enhanced. RX261: https://www.renesas.com/en/products/microcontrollers-microprocessors/rx-32-bit-performance-efficiency-mcus/rx261-microcontrollers-outstanding ...
Oct 22, 2024 -
Target applications of RX261 and RX260
They are suitable for a wide range of applications, including home appliances that require 5V operation and touch functionality, industrial equipment and building automation equipment that require high-speed processing and highly reliable communication such as CAN FD, and battery-powered products that require long operating times with low power ...
Oct 22, 2024
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.
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