Overview
Description
The RA2E2 Group is RA Family’s entry-line single-chip microcontroller based on the 48-MHz Arm® Cortex®-M23 core with Renesas' innovative on-chip peripheral functions. RA2E2 Group offers ultra-low power operation and high-speed serial communication with the smallest package options of 20-pin and 24-pin QFN and 16-pin wafer-level CSP package, satisfying the needs of cost-sensitive and space-constrained applications. These RA2E2 Group microcontrollers enable extremely cost-effective designs for IoT sensor nodes, portable devices, industrial control, and any battery-operated application that requires developers to cut power consumption, cost, and space.
Features
- 48MHz Arm Cortex-M23
- Up to 64kB Flash memory and 8kB SRAM
- 2kB Data Flash to store data as in EEPROM
- Scalable from 16-pin to 24-pin packages
- Wide operating voltage range of 1.6V to 5.5V
- Best-in-class Active/Standby power consumption in Arm Cortex-M23 microcontroller
- 12-bit ADC, temperature sensor
- 16-bit general PWM timer, 32-bit low power asynchronous general-purpose timer
- I3C bus interface
- SCI (UART, Simple SPI, Simple I2C)
- SPI interface
- Safety
- Security and encryption
- 125 °C operating temperature support
- Smallest package options (16-pin WLCSP, 20 and 24-pin HWQFN)
Comparison
Applications
Design & Development
Software & Tools
Sample Code
Sample Code
Filters
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| Type | Title | Date Date |
| Sample Code |
[Software=RA FSP],[Board=EK-RA2E2]
ZIP
7.09 MB
IDE:
e2 studio/GCC/AC6, IAR, Keil MDK
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| Sample Code | ZIP 3.62 MB Compiler: GNU Arm Embedded IDE: e2 studio | |
| Sample Code | ZIP 10.37 MB 日本語 Compiler: GNU Arm Embedded, IAR Compiler for Arm Function: Security IDE: e2 studio, IAR EWARM | |
| Sample Code |
[Toolchains=GCC Arm Embedded|10.3.1.20210824] [Software=RA FSP] [Board=EK-RA2E1]
ZIP
15.03 MB
Compiler:
GNU Arm Embedded
IDE:
e2 studio
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| Sample Code |
This application project discusses the considerations for securing Data at Rest in an embedded system and provides guidelines on how to use the Security MPU hardware feature of the RA Family MCUs to implement a secure Data at Rest solution.
ZIP
2.66 MB
Compiler:
ARMCC
IDE:
e2 studio
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| Sample Code | ZIP 14.71 MB 日本語 | |
| Sample Code | ZIP 1.55 MB | |
| Sample Code | ZIP 745 KB | |
8 items
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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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RA2E2 MCU + ZMOD4410 Air Quality Sensor Virtual Training Session [May 31, 2023]
Please post your questions here.
May 20, 2023 -
RA2E2 Data flash - how reliable is the data flash in case of interrupting power during write/erase operation
Hello, How reliable is the data flash (using FSP VEE module) in case of interrupting power supply during write/erase operation?
Oct 31, 2022 -
RA2E2 Setting the Options Function Select Register in Assembly
Hello,we are programming for various reasons still quite "old school" in assembly and had to switch from AVR and PIC to ARM (Renesas RA2E2)As development environment we use Keil µVison for this project. Unfortunately we have a problem and don't know how the Option Function Select Register ...
May 24, 2022
FAQs
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RA2E2: R_IIC_B_SLAVE_Open() does not return an error if slave address is in the range of reserved addresses.
... /UM10204.pdf page 16 3.1.12 Reserved addresses). If an address is used that is in the restricted range, the driver for the RA2E2 doesn't report an error. Workaround:When using the RA2E2 and the R_IIC_B_SLAVE_Open() API, don't use an address within ...
Apr 10, 2020 -
RA2E2: I3C Bus interface
MIPI I3C is a serial communication interface specification that improves upon the features, performance, and power use of I²C, while maintaining backward compatibility for most devices. RA2E2 and RA2L2 have the capability of multi Bus drop function with 4.6M bps communication speed while using significantly less power.RA2E2 and ...
Jun 10, 2025 -
RA2: External Memory interface
The RA2 series is the single chip microcontroller, it doesn't have an external bus interface. For this reason, it is not possible to connect external memory to the CPU's address and data bus.
Jul 9, 2025
Videos & Training
Watch an overview of the tiny, ultra-low power RA2E2 MCUs and see the innovative peripheral functions optimized for cost-sensitive and space-constrained IoT endpoint, wearable, medical, industrial automation and other consumer and home appliance applications. Visit renesas.com/RA2E2 for more details including documentation, samples and evaluation kits.
Additional Videos
Events & Webinars
News & Blog Posts
Blog Post
Nov 30, 2023
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Blog Post
May 24, 2023
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Blog Post
Jun 8, 2022
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