Overview
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.
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
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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RA2A2
Hello colleagues. How much RAM does the A2A2BD and the A2A2AD have? Does anyone have any information yet?Best regards, Roger
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 -
RA - > Synergy BSP Problems
Hello everyone. My customer has requested I move from RA to Synergy, and I'm perplexed by the HAL differences. This project uses just about every peripheral available, and I enjoyed porting to RA initially. The IDE and configurator and code all worked exceptionally well. The R_ interfaces for configuring ...
Nov 12, 2024
FAQs
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What is RA2A2?
RA2A2 is an RA family’s rich analog line MCU with Arm Cortex-M23 CPU and rich peripheral features to deliver better a design experience that allows high level analog sensing while reducing power consumption, system cost and overall footprint. In addition to analog sensing capability, RA2A2 has advantages in ...
Mar 21, 2024 -
RA2A2: Segment LCD Controller
RA2A2 supports new modes that are VL2 reference mode at internal voltage boosting method and VL4 reference mode at capacitor split method. Because efficiency of voltage generation for panel drive able to improve by these two new modes, these contribute power consumption efficiency of end-products. Furthermore, please check RA2A2 ...
Mar 21, 2024 -
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
Videos & Training
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.
Additional Videos
Events & Webinars
News & Blog Posts
News
Mar 21, 2024
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Blog Post
Mar 20, 2024
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