The RA2A1 Group of microcontrollers (MCUs) uses a high-performance Arm® Cortex®-M23 core and offers highly integrated, high-accuracy analog capabilities. This group of ICs offers a complete MCU with analog solution for signal conditioning and measurement. The RA2A1 Group supports a wide operating voltage range of 1.6V to 5.5V. It includes a 16-bit SAR ADC, 24-bit Sigma-Delta ADC, comparators, operational amplifiers, and DACs. The RA2A1 MCU targets cost sensitive and low power industrial sensor applications where high resolution analog will become a cost benefit.

Features

  • 48MHz Arm® Cortex®-M23
  • 256kB Flash memory and 32kB SRAM
  • 8kB Data Flash to store data as in EEPROM
  • Scalable from 32-pin to 64-pin packages
  • Capacitive touch sensing unit
  • 16-bit SAR A/D, 24-bit SD A/D
  • 12-bit D/A, 8-bit D/A
  • OPAMP (3ch), ACMP-HS/LP
  • USB 2.0 Full Speed
  • CAN 2.0
  • SCI (UART, Simple SPI, Simple I2C)

Applications

  • Industrial automation (photoelectric sensor, fiber sensor, temperature sensor)
  • Process automation (pressure sensor, flow control meter, single phase meter)
  • Building automation/home appliance (smoke detector)
  • Healthcare (pulse oximeters, body composition measurement)
  • General purpose

Documentation & Downloads

Title Other Languages Type Format File Size Date
Datasheets & Errata
- Renesas RA2A1 Group Datasheet Datasheet PDF 1.22 MB
- Renesas RA2A1 Group Datasheet Datasheet PDF 1.22 MB
Renesas RA2A1 Group Datasheet Datasheet PDF 1.22 MB
User Guides & Manuals
- Renesas RA2A1 Group User's Manual: Hardware 日本語 Manual PDF 15.97 MB
- Renesas RA2A1 Group User's Manual: Hardware 日本語 Manual PDF 15.97 MB
Renesas RA2A1 Group User's Manual: Hardware 日本語 Manual PDF 15.97 MB
Renesas Flash Programmer Sample Circuit for Programming by Using a PC's Serial Port 日本語 Manual PDF 1.14 MB
Technical Updates
RA2A1 Group, RA2L1 Group, RA2E1 Group, RA4M1 Group, RA4W1 Group, RA6M1 Group, RA6M2 Group, RA6M3 Group, RA6T1 Group, Note on ALeRASE command 日本語 Technical Update PDF 152 KB
RA family, Addition of register definition for Flash 日本語 Technical Update PDF 139 KB
Errata for User's Manual: Hardware for HOCO 日本語 Technical Update PDF 113 KB
Errata for User's Manual: Hardware for accessing data flash without using a device driver Technical Update PDF 125 KB
- Errata for User's Manual: Hardware for accessing data flash without using a device driver Technical Update PDF 125 KB
- Errata for User's Manual: Hardware for HOCO 日本語 Technical Update PDF 113 KB
Errata for User's Manual: Hardware regarding the overview Technical Update PDF 86 KB
- Errata for User's Manual: Hardware for accessing data flash without using a device driver Technical Update PDF 125 KB
- Errata for User's Manual: Hardware for HOCO 日本語 Technical Update PDF 113 KB
Application Notes & White Papers
- EK-RA2A1 Example Project Bundle Application Note PDF 77 KB
The Benefits of Using RA2A1 MCUs in Measurement Systems 日本語 White Paper PDF 805 KB
RA Family IEC 60730/60335 Self Test Library for RA MCU (CM4_CM23) 日本語 Application Note PDF 1.73 MB
- RA Family IEC 60730/60335 Self Test Library for RA MCU (CM4_CM23) 日本語 Application Note PDF 1.73 MB
Securing Data at Rest Utilizing the Renesas Security MPU Application Note PDF 1.48 MB
- Securing Data at Rest Utilizing the Renesas Security MPU Application Note PDF 1.48 MB
- RA2A1 Weight Measurement Example Using a Load Cell Application Note PDF 727 KB
Bring Fast, Accurate Multitouch User Interfaces to Your Designs 日本語, 简体中文 White Paper PDF 660 KB
RA2A1 Weight Measurement Example Using a Load Cell Application Note PDF 727 KB
- Secure Data at Rest for RA Family - Application Project Application Note PDF 1.41 MB
Secure Data at Rest for RA Family - Application Project Application Note PDF 1.41 MB
EK-RA2A1 Example Project Overview Application Note PDF 89 KB
- EK-RA2A1 Example Project Overview Application Note PDF 89 KB
RA Family Using QE and FSP to Develop Capacitive Touch Application 日本語 Application Note PDF 963 KB
Renesas RA Family Flash Memory Programming Application Note PDF 1.85 MB
Best Practices for Analog PCB Layout Using RA2A1 MCU 日本語 Application Note PDF 309 KB
24-Bit Sigma-Delta A/D Converter Performance for RA2A1 日本語 Application Note PDF 598 KB
16-Bit A/D Converter Performance for RA2A1 日本語 Application Note PDF 297 KB
Security for the Connected World 日本語, 简体中文 White Paper PDF 169 KB
How to Solve the 6 Top Security Challenges of Embedded IoT Design White Paper PDF 1.38 MB
PCNs & PDNs
Unification of a JEDEC tray and a embossed carrier tape for LQFP package (Additional Information & Correction) 日本語 Product Change Notice PDF 4.86 MB
Unification of a JEDEC tray and a embossed carrier tape for LQFP package 日本語 Product Change Notice PDF 3.74 MB
Unification of a JEDEC tray and a embossed carrier tape for LQFP package 日本語 Product Change Notice PDF 1.46 MB
Downloads
EK-RA2A1 Example Project Bundle - Sample Code Sample Code ZIP 4.05 MB
e² studio 2021-01 installer (Offline installer) 日本語 Upgrade - IDE EXE 1,637.73 MB
e² studio 2021-01 Linux Host 日本語 Upgrade - IDE XZ 570.99 MB
- RA Family IEC 60730/60335 Self Test Library for RA MCU (CM4_CM23) 日本語 Sample Code ZIP 8.83 MB
RA Family IEC 60730/60335 Self Test Library for RA MCU (CM4_CM23) 日本語 Sample Code ZIP 8.83 MB
- Securing Data at Rest Utilizing the Renesas Security MPU - Sample Code Sample Code ZIP 1.59 MB
Securing Data at Rest Utilizing the Renesas Security MPU - Sample Code Sample Code ZIP 1.59 MB
RA2A1 Weight Measurement Example Using a Load Cell - Sample Code Sample Code ZIP 1.80 MB
- RA2A1 Weight Measurement Example Using a Load Cell - Sample Code Sample Code ZIP 1.80 MB
Secure Data at Rest for RA Family - Application Project - Sample Code Sample Code ZIP 1.52 MB
- Secure Data at Rest for RA Family - Application Project - Sample Code Sample Code ZIP 1.52 MB
- EK-RA2A1 Example Project Overview - Sample Code Sample Code ZIP 2.28 MB
EK-RA2A1 Example Project Overview - Sample Code Sample Code ZIP 2.28 MB
EK-RA2A1v1 - Design Package 日本語 Software ZIP 39.18 MB
QE for Capacitive Touch [RA] V1.1.0: Development Assistance Tool for Capacitive Touch Sensor 日本語 Software ZIP 3.31 MB
Tool News
[Upgraded to version] e² studio 2021-01 日本語 Tool News - Release PDF 159 KB
[Upgrade to revision] Programming GUI for PG-FP6 Flash Memory Programmer (FP6 Terminal) V1.05.01 日本語 Tool News - Release PDF 57 KB
[Upgrade to revision] Renesas Flash Programmer V3.08.01 日本語 Tool News - Release PDF 81 KB
[Notification] Flash Programmer Survey Invitation 日本語 Tool News - Notification PDF 29 KB
[Upgrade to revision] Renesas Flash Programmer V3.08.00 日本語 Tool News - Release PDF 83 KB
[Upgraded to version] e² studio 2020-10 日本語 Tool News - Release PDF 160 KB
[Upgrade to revision] Programming GUI for PG-FP6 Flash Memory Programmer (FP6 Terminal) V1.05.00 日本語 Tool News - Release PDF 72 KB
[Upgrade to revision] Solution Toolkit QE for Capacitive Touch[RA] V1.2.0: Development Assistance Tool for Capacitive Touch Sensor 日本語 Tool News - Release PDF 105 KB
[Upgrade to revision] Renesas Flash Programmer V3.06.02 日本語 Tool News - Release PDF 80 KB
[Upgraded to version] e² studio 2020-07 日本語 Tool News - Release PDF 159 KB
[Upgrade to revision] Programming GUI for PG-FP6 Flash Memory Programmer (FP6 Terminal) V1.04.02 日本語 Tool News - Release PDF 74 KB
[Upgrade to revision] Programming GUI for PG-FP6 Flash Memory Programmer (FP6 Terminal) V1.04.01 日本語 Tool News - Release PDF 73 KB
[Released on the web] e² studio 2020-04 日本語 Tool News - Release PDF 184 KB
[Upgraded to revision] e² studio Integrated Development Environment V7.8.0 日本語 Tool News - Release PDF 194 KB
[Upgrade to revision] Solution Toolkit QE: Development Assistance Tool for Applications QE for Capacitive Touch[RA] V1.1.0: Development Assistance Tool for Capacitive Touch Sensor 日本語 Tool News - Release PDF 484 KB
[Upgrade to revision] e² studio Integrated Development Environment V7.7.0 日本語 Tool News - Release PDF 128 KB
[Upgrade to revision] Programming GUI for PG-FP6 Flash Memory Programmer (FP6 Terminal) V1.04.00 日本語 Tool News - Release PDF 642 KB
[Upgrade to revision] e² studio Integrated Development Environment V7.6.0 日本語 Tool News - Release PDF 253 KB
Other
An Introduction to Renesas Advanced (RA) MCU Kits Presentations PPSX 24.34 MB
Industrial Automation Brochure 日本語, 简体中文 Brochure PDF 7.93 MB
Renesas Flash Programmer V3.06.02 Release Notes 日本語 Release Note PDF 324 KB
[Flyer] E2Emulator[RTE0T00020KCE00000R] 日本語, 简体中文 Flyer PDF 381 KB
[Flyer] Renesas Software and Tools Flash Memory Programmer PG-FP6 日本語, 简体中文 Flyer PDF 417 KB
Renesas RA Family of 32-bit MCUs with Arm® Cortex®-M Core Flyer 日本語 Flyer PDF 391 KB
RA2A1 Group Flyer 日本語 Flyer PDF 333 KB
Building Automation Brochure 日本語 Brochure PDF 6.65 MB

Software / Tools

Title Type Description Company
Flexible Software Package (FSP) Software Package The Renesas RA Flexible Software Package (FSP) provides a quick and versatile way to build secure connected Internet of Things (IoT) devices using the Renesas RA Family of Arm microcontrollers (MCUs). FSP provides production ready peripheral drivers, FreeRTOS and middleware stacks to take advantage of the FSP ecosystem. Renesas
E2 emulator Lite [RTE0T0002LKCE00000R] Emulator On-chip debugging emulator. Also available as a flash memory programmer. [Support MCU/MPU: RA, RE, RL78, RX] Renesas
E2 emulator [RTE0T00020KCE00000R] Emulator On-chip debugging emulator. Also available as a flash memory programmer. [Support MCU/MPU: RA, RE, RH850, R-Car D1, RL78, RX] Renesas
e² studio IDE and Coding Tool Eclipse-based Renesas integrated development environment (IDE). (Note: You need to install compiler separately as an additional software) Renesas
PG-FP6 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, Renesas Synergy, Power Management, Renesas USB Power Delivery Family, ICs for Motor Driver/Actuator Driver, SuperH RISC engine, V850, 78K, R8C] Renesas
Renesas Flash Programmer (Programming GUI) Programmer (Unit/SW) Flash memory programming software [Support MCU/MPU and devices: RA, RE, RX, RL78, RH850, Renesas Synergy, Power Management, Renesas USB Power Delivery Family, ICs for Motor Driver/Actuator Driver, V850, 78KR, 78K0] Renesas
RA Smart Configurator Solution Toolkit The 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. Renesas
QE for Capacitive Touch: Development Assistance Tool for Capacitive Touch Sensors Solution Toolkit In developing embedded system using the capacitive touch sensor of RA family and RX family MCUs, you can easily setup initial configurations of the touch interface as well as process the tuning of sensors, and reduce development time. [Plugin for Renesas IDE "e2 studio"]
Renesas

Boards & Kits

Part Number Title Type Company
EK-RA2A1 RA2A1 MCU Group Evaluation Board Evaluation Renesas

Pin Count / Memory Size

Flash: 256kB
RAM: 32kB
Pin Count
Package
Size
Pitch
32-pin
LQFP
7x7mm
0.8mm
36-pin
BGA
5x5mm
0.8mm
40-pin
QFN
6x6mm
0.5mm
48-pin
QFN
7x7mm
0.5mm
64-pin
LQFP
10x10mm
0.5mm