Overview
Description
The Renesas RA6M3 group of microcontrollers (MCUs) uses the high-performance Arm® Cortex®-M4 core and offers a TFT controller with 2D accelerator and JPEG decoder. Additionally, the RA6M3 MCU offers Ethernet MAC with individual DMA and USB high-speed interface to ensure high data throughput. The RA6M3 MCU 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 RA6M3 is suitable for IoT applications requiring TFT, Ethernet, security, large embedded RAM, and USB High Speed (HS).
Features
- 120MHz Arm® Cortex®-M4
- 1MB - 2MB Flash memory and 640kB SRAM
- 64kB Data Flash to store data as in EEPROM
- Scalable from 100-pin to 176-pin packages
- Ethernet controller with DMA
- TFT controller/2D accelerator/JPEG decoder
- Capacitive touch sensing unit
- USB 2.0 Full Speed/USB High Speed
- CAN 2.0B
- SCI (UART, Simple SPI, Simple I2C)
- SPI/I2C multimaster interface/SDHI
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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EK-RA6M3 - USB Host working example
Hi all, I need to work with the USBFS controller to act as a host to connect a device that receives control transfers. While searching in the RA-FSP-Examples repository I didn't find any suitable example. The only one that works with the USB stack is the quickstart ...
May 21, 2020 -
RA6M3 simple SPI
Hi, We are trying to run the "sci_spi_ek_ra6m3_ep" sample project in RA6M3 eval board with simple SPI stack. When we run the project, the clock cycle of SPI is not normal, it is not 8 bit clock cycle. Please find the attached image of SPI clock ...
Feb 3, 2021 -
RA6M3 2 graphics layers, double framebuffer and emWin
Hi, I'm experiencing some isues trying to implement a 2 graphics layers. I have developed the whole project with 1 graphic layer and 2 framebuffers and with emwin graphical stack (switching between them with "GUI_MULTIBUF_Begin" and "GUI_MULTIBUF_End"). Now I'm trying to implement a second ...
Jun 20, 2025
FAQs
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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 -
Does the RA6M3 Group MCUs need an external PHY to operate USBHS at 480 Mbps?
The RA6M3 Group MCUs doesn't need an external PHY to operate USBHS at the standard 480 Mbps operating speed. [Tags] FAQNo:2000643, JFAQNo:2000643, CFAQNo:2000643
Oct 8, 2019 -
Differences in Programming Speeds using J-Link PRO for RA6M4 and RA6M3 MCUs
Here are some programming speeds for RA6M4 and RA6M3 MCUs. Note that programming TrustZone devices currently takes significantly longer than non-TrustZone devices.Using a J-Link PRO, with e2studio 2021-04 (updated to the latest version of the J-Link DLL, v7.50) to program the quickstart binary into ...
Jul 6, 2021
Videos & Training
Kickstart IoT and embedded systems development using Renesas EK-RA6M5, EK-RA6M4, and EK-RA6M3 evaluation kits for the RA6 MCU series. This video provides an overview of the kit architecture, key features, a quick start example project, and many useful resources to begin innovating quickly with Renesas RA MCUs.
