Features
- 48MHz Arm Cortex-M23 core
- 512KB flash memory (dual bank) and 48KB SRAM
- 8KB data flash memory (100,000 program/erase (P/E) cycles)
- 64-pin, 80-pin, and 100-pin LFQFP package options
- 24-bit Sigma-Delta A/D converter, 12-bit A/D converter and temperature sensor
- 16-bit general-purpose timers, 32-bit and 16-bit low-power AGT timers, and independent power supply RTC
- SCI (UART, Simple SPI, Simple I2C), SPI and I2C bus
- Segment LCD controller (8com x 38seg)
- Security functions including AES, Secure MPU, Flash Access Window, TRNG
RA2A2 Block Diagram
Description
The RA2A2 group is a low-power microcontroller that combines a 48MHz Arm® Cortex®-M23 core and a rich set of peripheral functions. The RA2A2 MCU provides an optimized feature set suitable for a wide range of applications by supporting segment LCD and high-precision analog sensing functionalities while reducing power consumption, system cost, and overall footprint. Furthermore, the RA2A2's dual bank flash and security features make firmware updates easy and increase system reliability.
Parameters
| Attributes | Value |
|---|---|
| Main CPU | Arm Cortex-M23 |
| Program Memory (KB) | 512 |
| RAM (KB) | 48 |
| Carrier Type | Bulk (Tray), Full Carton (Tray), Full Tray (Tray), Tape & Reel |
| Supply Voltage (V) | 1.6 - 5.5 |
| I/O Ports | 43, 59, 71, 77 |
| DRAM I/F | No |
| Temp. Range (°C) | 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) | 4, 5 |
| SPI (ch) | 1 |
| I2C (#) | 1, 2 |
| CAN (ch) | 0 |
| CAN-FD (ch) | 0 |
| Wireless | No |
| SDHI (ch) | 0 |
| High Resolution Output Timer | No |
| PWM Output (pin#) | 9, 11, 12 |
| 32-Bit Timer (ch) | 0 |
| 16-Bit Timer (ch) (#) | 5, 6 |
| Standby operable timer | Yes |
| Asynchronous General Purpose Timer / Interval Timer (ch) | 10 |
| 16-Bit A/D Converter (ch) | 0 |
| 14-Bit A/D Converter (ch) | 0 |
| 12-Bit A/D Converter (ch) | 2, 4 |
| 24-Bit Sigma-Delta A/D Converter (ch) | 4, 7 |
| 12-Bit D/A Converter (ch) | 0 |
| 8-Bit D/A Converter (ch) | 0 |
| Capacitive Touch Sensing Unit (ch) | 0 |
| Image Codec | No |
| Segment LCD Controller | Yes |
| Security & Encryption | Unique ID, TRNG, AES(128/256) |
Product Comparison
| RA2A2 | RA2A1 | RA2L1 | RA4M2 | |
| CPU | Arm Cortex-M23 | Arm Cortex-M23 | Arm Cortex-M23 | Arm Cortex-M33 |
| Operating Freq (Max) (MHz) | 48 | 48 | 48 | 100 |
| Program Memory (KB) | 512 | 256 | 128, 256 | 256, 384, 512 |
| RAM (KB) | 48 | 32 | 32 | 128 |
| Data Flash (KB) | 8 | 8 | 8 | 8 |
| Lead Count (#) | 64, 80, 100 | 32, 36, 40, 48, 64 | 48, 64, 80, 100 | 48, 64, 100 |
| Supply Voltage | 1.6 - 5.5 | 1.6 - 5.5 | 1.6 - 5.5 | 2.7 - 3.6 |
Application Block Diagrams
 | Humanoid Battery Management System Integrated humanoid robot BMS enabling safe, real-time power management, protection, and battery-state control. |
 | Level 2 EV Charger Modular EVSE system with advanced connectivity for efficient EV charging and management. |
 | Magnetic Flow Meter Magnetic flow meters ensure precise flow measurement using electromagnetic induction, ideal for various industries. |
 | Smart Thermostat IoT-enabled smart thermostat offers remote monitoring, and energy efficiency, and supports rapid prototyping tools. |
 | Three-Phase Smart Electric Meter Three-phase smart meter with remote data access and high-voltage operation for heavy loads. |
Additional Applications
- Energy meters
- Industrial automation
- Building automation
- Home appliances
- Medical and healthcare
- Digital home appliances/consumer products
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Renesas Boards & Kits
EK-RA2A2
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Evaluation Kit for RA2A2 MCU Group
The EK-RA2A2 evaluation kit enables users to effortlessly evaluate the features of the RA2A2 MCU group and develop embedded system 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
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Evaluation
RA Family Microcontroller Board
This solution provides a general-purpose evaluation board featuring Renesas RA Family microcontrollers. It is available as a standalone evaluation board or as part of functional kits supporting applications such as CAN, touch key interfaces, and brushless motor control.
Supported Products:
RA0E1,RA2A1,RA2A2,RA2E1,RA2E3,RA2L1,RA2L2,RA2T1,RA4C1,RA4E1,RA4E2,RA4L1,RA4M1,RA4M2,RA4M3,RA4T1,RA6E1,RA6E2,RA6M1,RA6M2,RA6M3,RA6M4,RA6M5,RA6T1,RA6T2,RA6T3,RA8E1,RA8M1,RA8T1Provided By:
HOKUTO DENSHILoading
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- 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 ToolkitThis development assistance tool supports the development of embedded systems to perform high-precision sensing for microcontrollers with built-in analog front-end (AFE). [Plugin for Renesas IDE "e2 studio"] [Standalone Version] [Support MCU/MPU:RA, RX]
- 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-RA2A2 example project shows how to write code for various Renesas Flexible Software Package (FSP) modules supported by the EK-RA2A2 kit. The Flexible Software Package provides an optimized, easy-to-use, scalable, and high-quality software solution for embedded system design.
- 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 CodeMCUboot is a secure bootloader for 32-bit MCUs. It defines a common infrastructure for the bootloader, defines system flash layout on microcontroller systems, and provides a secure bootloader that enables easy software update. MCUboot is operating system and hardware independent and relies on hardware porting layers from the operating system it works with.
- 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 ToolkitThis development assistance tool supports the development of embedded systems to perform high-precision sensing for microcontrollers with built-in analog front-end (AFE). [Plugin for Renesas IDE "e2 studio"] [Standalone Version] [Support MCU/MPU:RA, RX]
- 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-RA2A2 example project shows how to write code for various Renesas Flexible Software Package (FSP) modules supported by the EK-RA2A2 kit. The Flexible Software Package provides an optimized, easy-to-use, scalable, and high-quality software solution for embedded system design.
- 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 CodeMCUboot is a secure bootloader for 32-bit MCUs. It defines a common infrastructure for the bootloader, defines system flash layout on microcontroller systems, and provides a secure bootloader that enables easy software update. MCUboot is operating system and hardware independent and relies on hardware porting layers from the operating system it works with.
- View More (6)
Sample Code (6)
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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)
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Level 2 EV Charger Reference Design
This modular electric vehicle supply equipment (EVSE) system simplifies development and accelerates deployment of smart electric vehicle (EV) chargers. Our controller board stacks over a power board and supports flexible 1-phase to 3-phase charging up to 22kW. We integrate Wi-Fi, Bluetooth® Low... Read More
An overview of the ultra-low power, feature-rich MCUs ideal for global energy management and a variety of industrial applications. Get all the details on the RA2A2 page.
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Mar 21, 2024
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Mar 20, 2024
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RA2A2
Hello colleagues. How much RAM does the A2A2BD and the A2A2AD have? Does anyone have any information yet?Best regards, Roger This thread was automatically locked due to age.
Jan 22, 2024 -
Ethernet on the RA2
Hello everyone, I want to implement Ethernet (HTTP Client/ MQTT Client) on a RA2 microcontroller.At the moment I want to use the RA2A1 or RA2A2 for this. On the hardware side I want to use the KSZ8851, which is connected via the SPI bus to the controller.How ...
Aug 5, 2025 -
Code Flash read, write, erase on R7FA2A1AB3CFM
Hi community, I'm working on code flash read, write, erase operation on the RA2A1 able understand sample code provided at https://github.com/renesas/ra-fsp-examples/blob/master/example_projects/ek_ra2a2/flash_lp/flash_lp_ek_ra2a2 ...
Dec 15, 2025
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Using SCI Boot with RA2 and RFP.
... mode through RFP with a USB to UART bridge only used. You can download Renesas Flash Programmer and it's User's Manual from here: https://www.renesas.com/en/software-tool/renesas-flash-programmer-programming-gui Suitable Products RA2E1,RA2L1,RA2E2,RA2A1,RA2E3,RA2A2
Nov 11, 2024 -
RA2: Operation temperature
RA2 series supports wide range of operating temperature. RA2L1, RA2A1, RA2E1, RA2E3 and RA2A2 support from -40 to 105degC. (ambient temperature)RA2E2, RA2L2 and RA2T1 support from -40 to 125degC. (ambient temperature)
Jul 9, 2025 -
RA2: Safety Functions
The RA2L1/RA2L2/RA2E1/RA2E2/RA2E3/RA2A2 has a number of safety functions that allow confirmation of normal operation. 1. Error detection Independent Watchdog timer (IWDT) Flash memory CRC calculation SRAM parity error detection SRAM ECC function (Available in only the RA2L1, RA2A1, RA2A2) Main ...
Jul 9, 2025
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