Features
- 48MHz Arm Cortex-M23
- 128kB/256kB Flash Memory and 32kB SRAM with ECC
- 8kB Data Flash to store data as in EEPROM
- Scalable from 48-pin to 100-pin packages
- Internal voltage regulators
- Enhanced Capacitive Touch Sensing Unit (CTSU2)
- 12-bit ADC, 12-bit DAC, LPACMP
- 32-bit general PWM timer, 16-bit general PWM timer, low power asynchronous general-purpose timer
- RTC
- SCI (UART, Simple SPI, Simple I2C)
- SPI/I2C multi-master interface
- CAN
- Safety
- Security and encryption
Description
The RA2L1 group is based on the Arm® Cortex®-M23 core, the most energy-efficient CPU among Arm Cortex-M today. The optimized processing and Renesas’ low power process technology makes it the industry's most energy-efficient ultra-low power microcontroller. The RA2L1 group supports a wide operating voltage range of 1.6V to 5.5V, and a maximum CPU clock frequency of 48MHz, lower active mode current, and standby mode current. The RA2L1 group also features an enhanced Capacitive Touch Sensing Unit (CTSU2), a set of serial communication interfaces, highly accurate converters, and timers. The products are available with pin counts ranging from 48-pin to 100-pin.
Parameters
| Attributes | Value |
|---|---|
| Main CPU | Arm Cortex-M23 |
| Program Memory (KB) | 128, 256 |
| RAM (KB) | 32 |
| Carrier Type | Bulk (Tray), Full Carton (Tray), Full Tray (Tray), Tape & Reel |
| Supply Voltage (V) | 1.6 - 5.5 |
| I/O Ports | 37, 53, 69, 85 |
| DRAM I/F | No |
| Temp. Range (°C) | Ta= -40 to +85, Ta=-40 to +105 |
| Operating Freq (Max) (MHz) | 48 |
| Ethernet speed | No |
| EtherCat (ch) (#) | 0 |
| USB FS (host ch/device ch) | ( 0 / 0 ) |
| USB HS (host ch/device ch) | ( 0 / 0 ) |
| USB SS (host ch/device ch) | ( 0 / 0 ) |
| SCI or UART (ch) | 5 |
| SPI (ch) | 2 |
| I2C (#) | 2 |
| CAN (ch) | 1 |
| CAN-FD (ch) | 0 |
| Wireless | No |
| SDHI (ch) | 0 |
| High Resolution Output Timer | No |
| PWM Output (pin#) | 13, 20 |
| 32-Bit Timer (ch) | 4 |
| 16-Bit Timer (ch) (#) | 3, 6 |
| Standby operable timer | Yes |
| Asynchronous General Purpose Timer / Interval Timer (ch) | 2 |
| 16-Bit A/D Converter (ch) | 0 |
| 14-Bit A/D Converter (ch) | 0 |
| 12-Bit A/D Converter (ch) | 9, 13, 17, 19 |
| 24-Bit Sigma-Delta A/D Converter (ch) | 0 |
| 12-Bit D/A Converter (ch) | 1 |
| 8-Bit D/A Converter (ch) | 0 |
| Capacitive Touch Sensing Unit (ch) | 20, 30, 32 |
| Image Codec | No |
| Segment LCD Controller | No |
| Security & Encryption | Unique ID, TRNG, AES(128/256) |
Application Block Diagrams
 | Humanoid Battery Management System Integrated humanoid robot BMS enabling safe, real-time power management, protection, and battery-state control. |
 | Mid-Range Thermostat Mid-range thermostat with Wi‑Fi, integrated sensors, and smart home connectivity for enhanced comfort and efficiency. |
 | Dual-Needle Gauge Dual-needle gauge displays two real-time values for fast, intuitive analog monitoring. |
 | Continuous Glucose Monitor (CGM) Continuous glucose monitor with detachable sensors, a rechargeable battery, and precision technology for optimal glucose management. |
 | Current Loop Communication with AnalogPAK AnalogPAK™ enables a 4-20mA current loop with HART modem and FSK modulation support. |
 | Robust Operational Touch Panel with CAN FD Reliable HMI touch panel with CAN FD, haptics, and NFC for e-bikes, elevators, and industry. |
 | Bidirectional 3000W UPS Power Bidirectional 3kW telecom UPS system design with buck‑boost controllers, MCU, and power devices. |
 | Vehicle Telematics Box with 4G & GPS Vehicle telematics box enables 4G communication, GPS, remote management, data acquisition, and fault monitoring. |
 | OCPP Interface Card (OIC) for Smart EV Chargers OCPP enables EV chargers to connect with servers for remote control, real-time alerts, and flexibility. |
 | Solar-Powered Location Tracker The solar-powered location tracker offers modular design, versatile connectivity, and PV energy harvesting. |
 | Instrument Panel for Light Electric Vehicles Compact instrumental panel system with sensor support, Bluetooth LE, GPU, and voice control. |
 | Swappable Battery Charging Kiosk Swappable battery charging kiosk for LEVs offers reduced wait times, easy operation, and versatile functionality. |
 | Edge Voice User Interface (VUI) Voice control with RA MCUs offers efficient, network-free voice recognition for smart devices. |
 | Industrial CAN Sensor Network Industrial CAN network with Arm Cortex-M23 MCU offers reliable, secure communication and robust performance. |
 | Wi-Fi-Connected Furnace Controller Wi-Fi-connected furnace controller with precise sensing, safety compliance, and remote monitoring for modern HVAC systems. |
Additional Applications
- Consumer applications
- Home appliances
- Industrial automation
- Building automation
- Medical and healthcare
- General purpose
Complete Your Design
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Renesas Boards & Kits
Capacitive Touch Evaluation System for RA2L1
The RA2L1 capacitive touch evaluation system makes it easy for users to evaluate touch solutions offered by Renesas. You can start evaluating immediately out of the box using the board and software included in each kit.
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- RA2L1 CPU board
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Evaluation Kit for RA2L1 MCU Group
The EK-RA2L1 evaluation kit enables users to effortlessly evaluate the features of the RA2L1 MCU Group and develop embedded systems applications using Renesas' Flexible Software Package (FSP) and e2 studio IDE. Utilize rich on-board features along with your choice of popular ecosystem add-ons to... Read More
RA2L1 Voice User Demonstration Kit
Easy-to-use hardware platform for Voice User Interface (VUI) solutions based on the RA2L1 MCU.
This VUI partner-enabled solution is based on the RA family of 32-bit MCUs. The hardware platform is used for all VUI partner-enabled solutions provided by Renesas within the Renesas Ready Partner... Read More
Industrial CAN Sensor Network Development Kit
The industrial CAN sensor network features a main monitoring board and several daughter boards with temperature and humidity, airflow, and air quality sensors. The sensor boards utilize the RA2L1 microcontroller for its small form factor and Arm® Cortex®-M23 processor with a built-in CAN module... Read More
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Smart Solar Battery Charger Demonstration Board
The US011-SOLCHRGEV1Z Smart Solar Battery Charger demonstration board uses the ISL81801 buck-boost converter and RA2L1 32-bit MCU to convert energy from a solar panel (user-provided) to charge a lead-acid battery with Maximum Power Point Tracking (MPPT).
Partner Boards & Kits
FSP201 Sensor Hub Chip
FSP201 Sensor Hub Development Kit
FSP201 Sensor Hub Module
FSP201 Sensor Hub USB Module
RA Family Microcontroller Board
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Partner Solutions
- Software PackageRA Flexible Software Package (FSP)RECOMMENDEDFSP is an enhanced software package designed to provide easy-to-use, scalable, high-quality software for embedded system designs using Renesas RA Family of Arm Microcontrollers. Note: FSP with e² studio Installer (Platform Installer) will install the e² studio tool, FSP packs, GCC toolchain, and Segger J-Link drivers required to use this software. No additional installations are required.
- IDE and Coding ToolEclipse-based Renesas integrated development environment (IDE).
- Solution ToolkitIn 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 ToolkitThe Renesas RA Smart Configurator (RA SC) is a desktop application that helps you in configuring software systems (including a Board Support Package (BSP), drivers, RTOS, and middleware) for RA-Family MCUs when you are using a third-party IDE and toolchain.
- Solution ToolkitRound-trip workflow for AI development and performance validation allowing to collect data, optimize models, and deploy directly to Renesas hardware
- EmulatorOn-chip debugging emulator. Also available as a flash memory programmer. [Support MCU/MPU: RA, RE, RH850, R-Car D1, RL78, RX, RISC-V MCU]
- EmulatorOn-chip debugging emulator. Also available as a flash memory programmer. [Support MCU/MPU: RA, RE, RL78, RX, RISC-V MCU]
- Programmer (Unit/SW)On-chip debugging emulator available as a flash memory programmer [Available flash programming software: Renesas Flash Programmer] [Support MCU/MPU and devices: RE, RX, RL78, RH850, RISC-V MCU, Power Management, Renesas USB Power Delivery Family, ICs for Motor Driver/Actuator Driver]
- Programmer (Unit/SW)On-chip debugging emulator available as a flash memory programmer [Available flash programming software: Renesas Flash Programmer] [Support MCU/MPU and devices: RX, RL78, RISC-V MCU, Power Management, Renesas USB Power Delivery Family, ICs for Motor Driver/Actuator Driver]
- Programmer (Unit/SW)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)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]
- ImagingSEGGER's emWin graphics library is a ready-to-use solution that provides a versatile and professional GUI platform for creating interactive and high-quality graphical user interfaces on any type of display for the Renesas RA family.
- Sample CodeThe EK-RA2L1 example project shows how to write code for various Renesas Flexible Software Package (FSP) modules supported by the EK-RA2L1 kit. The Flexible Software Package provides an optimized, easy-to-use, scalable, and high-quality software solution for embedded system design.
- Sample CodeThe CTSU2, the enhanced version of the Renesas Capacitive Touch Sensing Unit (CTSU), supports an active shield as one of its anti-noise countermeasures. This document describes the self-capacitance waterproof touch button demo software, which implements the active shield function.
- Sample CodeAI-generated Summary: Learn how to create a secure bootloader using the MCUboot module with Ocrypto for enhanced security on the Renesas EK-RA2E1 kit. This sample package includes bootloader and example application projects to help you implement secure boot functionality.
- Software PackageRA Flexible Software Package (FSP)RECOMMENDEDFSP is an enhanced software package designed to provide easy-to-use, scalable, high-quality software for embedded system designs using Renesas RA Family of Arm Microcontrollers. Note: FSP with e² studio Installer (Platform Installer) will install the e² studio tool, FSP packs, GCC toolchain, and Segger J-Link drivers required to use this software. No additional installations are required.
Recommended (1)
- Software PackageRA Flexible Software Package (FSP)RECOMMENDEDFSP is an enhanced software package designed to provide easy-to-use, scalable, high-quality software for embedded system designs using Renesas RA Family of Arm Microcontrollers. Note: FSP with e² studio Installer (Platform Installer) will install the e² studio tool, FSP packs, GCC toolchain, and Segger J-Link drivers required to use this software. No additional installations are required.
- IDE and Coding ToolEclipse-based Renesas integrated development environment (IDE).
- Solution ToolkitIn 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 ToolkitThe Renesas RA Smart Configurator (RA SC) is a desktop application that helps you in configuring software systems (including a Board Support Package (BSP), drivers, RTOS, and middleware) for RA-Family MCUs when you are using a third-party IDE and toolchain.
- Solution ToolkitRound-trip workflow for AI development and performance validation allowing to collect data, optimize models, and deploy directly to Renesas hardwareView More (12)
Software & Tools (12)
- Sample CodeThe EK-RA2L1 example project shows how to write code for various Renesas Flexible Software Package (FSP) modules supported by the EK-RA2L1 kit. The Flexible Software Package provides an optimized, easy-to-use, scalable, and high-quality software solution for embedded system design.
- Sample CodeThe CTSU2, the enhanced version of the Renesas Capacitive Touch Sensing Unit (CTSU), supports an active shield as one of its anti-noise countermeasures. This document describes the self-capacitance waterproof touch button demo software, which implements the active shield function.
- Sample CodeAI-generated Summary: Learn how to create a secure bootloader using the MCUboot module with Ocrypto for enhanced security on the Renesas EK-RA2E1 kit. This sample package includes bootloader and example application projects to help you implement secure boot functionality.
- Sample CodeThis LoRa-based wireles softwar package includes the sample software and evaluation tools to develop the LoRa and LoRaWAN based applications.This document describes the information on the contents of this package and how to setup the hardware and software.
- Sample CodeThe LoRaWAN Sensor Demo package includes sample software that introduces how to visualize sensor data transmitted by a sensor node to Cloud (AWS/Azure) via LoRaWAN networks. This document describes the specification and usage of the sample software.View More (16)
Sample Code (16)
- Model - IBIS
Simulation Models (1)
Development ToolUniversal third-party programmers support a wide range of Renesas programmable devices across both off-board and on-board programming modes.Provided By: Elnec s.r.o.- Application Specific SWEnables adaptive pedestrian traffic light control by detecting and counting pedestrians and calculating wait times in real-time, with no network connection required. Runs entirely at the edge on the Renesas RA8P1 MCU, accelerated by the Arm® Ethos-U55 Neural Processing Unit (NPU), achieving 11ms inference time within a ...Provided By: Irida Labs
- Development ToolSupporting Arm® and RX microcontrollers, the SEGGER J-Link series is an industry-standard debugger for software development. High-speed programming algorithms reduce binary transfer time and accelerate development cycles. Broad compatibility supports Renesas e² studio, major IDEs, and RZ, RA, and RX devices. Advanced analysis with Ozone and ...Provided By: EmbiTeK Co., Ltd.
- AILocal AI–based Audio Event Detection identifies sound events such as baby crying and glass breaking with ~95% accuracy and 10–100 ms latency, enabling fast and reliable response to critical events. Supports deployment on Cortex-M0+ and comparable RISC-V/NPU/DSP platforms. Model size ranges from ...Provided By: Aizip Inc.
- Development ToolProvides high-volume automated programming systems engineered for factory-scale production, enabling efficient handling of a wide range of integrated circuit (IC) devices. Optimized for microcontrollers (MCUs) and flash memory, the systems support tube, tape, and tray input/output configurations for flexible manufacturing integration. Advanced auto-teach alignment capabilities ...Provided By: DediProg Technology Co., Ltd.View More (92)
Partner Solutions (92)
Capacitive Touch 3D Gesture Reference Design
The 3D Gesture reference design detects the position of a hand in space by measuring its x-, y-, and z-coordinates using Renesas' Capacitive Touch Sensing Unit (CTSU). The system can track hand movement up to 200mm above the panel surface and convert it into precise spatial coordinates.... Read More
Test This Board Remotely
Capacitive Touch Proximity Touch Reference Design
The Touchless Button Reference Design can detect the approach of fingers and hands without physical contact using Renesas’ capacitive touch solution. The electrode detects the proximity of the finger via self-capacitance and turns on the LED. The demo solution is compatible with all types of... Read More
Capacitive Touch Waterproof Button with Self-Capacitance Reference Design
The Renesas capacitive sensor, CTSU2, can utilize an active shield without any external components. Active shielding is effective in improving water resistance as well as improving the noise immunity of self-capacitance buttons.
The Self-Capacitance Waterproof Button Solution reference design... Read More
Introducing the RA2L1 Group of 48MHz ArmⓇ CortexⓇ-M23 ultra-low power general-purpose microcontrollers (MCUs). These MCUs deliver industry-leading power efficiency with enhanced peripherals for IoT applications.
Additional Videos
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Support Communities
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Related to CAN in RA2L1
Hello Everyone, I want to use CAN in RA2L1, I have done all the stack settings. But my callback function is not getting called. Interrupt is not getting enabled. And due to this I am not able to transmit or receive data . Help me with this Thank You. [locked by ...
Jun 3, 2024 -
How to Decrypt AES-128 Data on R7FA2L1AB3CFP (RA2L1) – Encrypted by ESP32 (mbedtls/aes) ?
Hello everyone, I'm working on a project using the Renesas RA2L1 microcontroller, part number R7FA2L1AB3CFP, and I need help implementing AES-128 decryption. I already have the encrypt data using AES-128 on the ESP32 and then transmit the encrypted data via UART to the RA2L1 device. and the ...
Jul 4, 2025 -
RA2L1 CAN FIFO
Hi, I am trying to work on can with rx fifo buffer. I build my project with FSP Smart Configurator and, as far as i understand, i must use can_callback. Here starts the problem, if i use interrupt (i dont have any other interrupt in project) every received message ...
Jul 19, 2023
Knowledge Base
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RA Family: How to Achieve Burst Transfer via SPI Communication on RA MCUs (Differences in SSL Operation between RA2L1 and RA4L1)
... same FSP API (r_spi), the behavior of the SSL signal may not be consistent. This article explains the fundamental differences in SPI operation between RA2L1 and RA4L1, and how to configure them to align their behaviors. Question When using FSP's r_spi_write() on both RA2L1 and RA4L1 ...
Dec 26, 2025 -
EK-RA2L1 Schematic Missing Connections
Suitable Products
Apr 14, 2022 -
Running RA2L1 UART at 1MBps Example
Last Updated: 11/30/2021 The attached project using e2studio v3.3.0 and with an EK-RA2L1 board runs the UART at 1MBps without issue. In project Properties, make sure Baud Rate Modulation is Enabled and set baud rate to 1000000. See the below output display: Suitable ...
Nov 30, 2021
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