Overview
Description
The Renesas RA4M2 group of 32-bit microcontrollers (MCUs) uses the high-performance Arm® Cortex®-M33 core with TrustZone®. In concert with the secure crypto engine, it offers secure element functionality. The RA4M2 is built on a highly efficient 40nm process and is supported by an open and flexible ecosystem concept—the Flexible Software Package (FSP), built on FreeRTOS—and is expandable to use other RTOSes and middleware. The RA4M2 is suitable for IoT applications requiring vast communication options, future proof security, large embedded RAM, and low active power consumption down to 81µA/MHz running the CoreMark® algorithm from Flash.
Features
- 100MHz Arm Cortex-M33 with TrustZone
- Secure element functionality
- 256kB - 512kB Flash memory and 64kB SRAM with parity and 64kB SRAM with ECC
- 8kB Data Flash to store data as in EEPROM
- 1kB Stand-by SRAM
- Scalable from 48-pin to 100-pin packages
- Capacitive touch sensing unit (CTSU)
- USB 2.0 Full Speed
- CAN 2.0B
- Quad SPI
- SCI (UART, Simple SPI, Simple I2C)
- SPI/I2C multi-master interface
- SDHI and MMC
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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ADXL343 driver for RA4M2
Hi, We are integrating the ADXL sensor (from Analog Devices Inc) to RA4M2 (Renesas micro) over the I2C interface. We have chosen FreeRTOS operating system for RA4M2. We need the compatible ADXL driver/libraries for the specified platform to leverage the code to our system. Details: Part number: ADXL343BCCZ ...
Feb 16, 2022 -
RA4M2 Hardware Reset issue.
Hello Renesas Team, We are using the R7FA4M2AC microcontroller in our project. Previously, the hardware reset was functioning correctly. However, I occasionally encountered an issue where pressing the reset button would cause the code not to execute. Now, the issue occurs consistently. When I press the reset button, the code ...
Jun 25, 2025 -
RA4M2 MCU RTC forward deviation
Hello everyone, We saw rtc 15 sec forward deviation in 5 minutes, we using loco clock source.I added below my rtc configuration: I could use to sub-clock. can you help what's configuration the rtc for 2 option(loco and sub-clok). some time I see deviation but ...
Mar 26, 2025
FAQs
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RA4M2 Programming Failures when Moving from TrustZone Project to Flat Project
In e2 studio perform the following:
Feb 1, 2021 -
RA6M1, RA6M2, RA6M3, RA6T1, RA6M4, RA6M5, RA4M2, RA4M3: Can A/D conversion be performed on other analog input?
Yes. Temperature sensor output and internal reference voltage are selectable at the same time as the analog input of the channel. A/D conversion is performed first for the analog input of the channel, next for the temperature sensor output, and then for the internal reference voltage.
Apr 28, 2021 -
Correct Connections for VCL pin on RA4M2 MCUs
You might be confused on what to do with the VCL pin when reading the datasheet. Section 1.5 says: "Connect this pin to the VSS pin by the smoothing capacitor used to stabilize the internal power supply", you might think that you connect VCL to Vss right next to ...
Jan 18, 2022
Videos & Training
Introducing the RA4M2 Group of 100MHz Arm® Cortex®-M33 core general-purpose 32-bit microcontrollers (MCUs). These MCUs deliver lowest active power, industry-leading performance and security for IoT applications.
Additional Videos
Events & Webinars
News & Blog Posts
Blog Post
Jan 28, 2022
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Blog Post
Feb 3, 2021
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