Overview
Description
The RA2E1 group is the RA Family’s entry-level single-chip microcontroller based on the 48MHz Arm® Cortex®-M23 core and up to 128KB code flash and 16KB SRAM memory. The optimized processing and Renesas’ low power process technology make it the industry's most energy-efficient ultra-low power MCU. The RA2E1 group supports a wide operating voltage range of 1.6V to 5.5V and a large selection of packages such as LQFP, QFN, LGA, BGA, and WLCSP. The RA2E1 provides pin and peripheral compatibility with the RA2L1 group and is ideal for battery-operated applications and other systems requiring high performance and low-energy consumption in space-constrained applications.
Features
- 48MHz Arm Cortex-M23
- Up to 128kB Flash memory and 16kB SRAM
- 4kB Data Flash to store data as in EEPROM
- Scalable from 25-pin to 64-pin packages
- Wide operating voltage range of 1.6V to 5.5V
- Enhanced Capacitive Touch Sensing Unit (CTSU)
- 12-bit ADC, LPACMP, temperature sensor
- 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
- Safety
- Security and encryption
- A large selection of packages (LQFP, QFN, LGA, BGA, WLCSP)
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
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RA2E1 acts as an SMBUS slave device
I am using the RA2E1 series from Renesas to act as an SMBUS slave device. I hope to receive data of varying lengths (for Block Read/Write operations). Are there any similar demos available for reference? Since the data length is variable, will I have to accept each piece ...
Jun 11, 2025 -
RA2E1 MCUBoot
Hi, I am trying to add a MCUBoot Bootloader to RA2E1 MCU, using FSPv3.0.1. By referencing to the application note: Using MCUboot with RA Family MCUs - Renesashttps://www.renesas.com › document › apn › usin.., I can successfully create the Bootloader and boot to my main application. However ...
Jun 25, 2021 -
RA2E1 OFS0 settings not being applied to code-flash
Hello, I am trying to configure the OFS0 configuration register to enable the IWDT, however all changes i make to the configuration.xml regarding the OFS0 register do not seem to make it to code-flash memory. See pictures below: I have also attempted to write to the code-flash ...
Jun 19, 2024
FAQs
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Default XTAL Value Incorrect on EK-RA2E1
Last Updated:01/25/2021 In FSP 2.3.0, the default XTAL (ie: main clock oscillator) value when creating a project for the EK-RA2E1 is 16MHz. The EK-RA2E1 board actually has a 20MHz XTAL. Please note that the default clock source for EK-RA2E1 projects ...
Jan 25, 2021 -
Migration guide from RA2E1 to RA2E3
Renesas provided Application note describing the difference points from hardware and software point view. Highlighting the points to care when migrate from RA2E1 to RA2E3. Otherwise User can easily migrate their design between these groups.
Dec 5, 2023 -
Error with QE for Capacitive Touch with TSxx-CFC on RA2E1 and FSP
Last Updated: 11/17/2021 Issue: When using a TS with CFC (TSxx-CFC) on RA2E1, an error occurs on QE's window of "Create Configuration of Touch Interfaces", and QE cannot be used. QE's window of "Create Configuration of Touch Interfaces" is shown below. This issue ...
Jan 1, 1970
Videos & Training
Events & Webinars
News & Blog Posts
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Nov 30, 2023
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Feb 20, 2023
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Oct 25, 2022
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Jan 28, 2022
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Dec 1, 2021
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Blog Post
Jan 27, 2021
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