Overview
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.
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
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
Renesas Academy
Support Communities
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SSD1306 using I2C in RA2L1
Hi,Is there any library for RA2L1MCU's SSD1306 OLED using I2C interface,If yes please provide the link, Thanks. [locked by: AZ [Renesas] at 9:52 (GMT 0) on 16 Jul 2025]
Jan 10, 2024 -
Why my RA2L1 SPI doesn't inizialize?
Hello, I recently posted for some help on the CTSU peripheral on my RA2L1 and finally I got the expected result. But this product need to communicate with a pair of external peripheral through a SPI and one through a I2C. So let's start with the SPI ones... I ...
Jul 21, 2022 -
Request to get addresses refered inside Test Usage Ram.c in EK RA2L1 processor's Class B Safety files(for IAR)
... RAM_END_ADDRESS, STACK_START_ADDRESS and STACK_END_ADDRESS ) as they were originally used in Test_Usage_RAM.c for IAR use case for RA2L1 processor in the provided project? I will then tally your values to the provided .icf file in the example project and then from there ...
Mar 29, 2024
FAQs
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Errata to EK-RA2L1 schematic and manual on MikroBUS Connector for ES Boards
Last Updated: 10/12/2021 There appears to be an error in the schematics and documentation for the EK-RA2L1 ES board. From tests it would appear that CS of the MikroBUS connector is connected to P1_04 of the RA2L1, not P1_03. The below attached project ...
Oct 12, 2021 -
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 -
EK-RA2L1 Schematic Missing Connections
Suitable Products
Apr 14, 2022
Videos & Training
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.
