Arduino Nano R4

The Arduino Nano R4 combines the powerful Renesas RA4M1 microcontroller with the popular Nano form factor. This version is supplied without pre-installed headers, making it ideal for soldering directly onto custom PCBs or applications where a low-profile installation is required. With its 48MHz Arm Cortex-M4 processor, USB Type-C connector and modern onboard peripherals, the Nano R4 is well suited for embedded systems, industrial automation and IoT projects. :contentReference[oaicite:2]{index=2}

The board maintains the familiar Nano pinout and 5V operating voltage, ensuring compatibility with many existing Nano accessories. It also features a Qwiic I²C connector, 12-bit DAC, integrated operational amplifier (OPAMP), Real-Time Clock (RTC) and CAN controller support via an external transceiver, making it suitable for both rapid prototyping and production-ready designs.

Highlighted features

• Renesas RA4M1 32-bit Arm Cortex-M4 running at 48MHz
• Version without pre-installed headers
• 256kB Flash, 32kB SRAM and 8kB Data Flash (EEPROM)
• USB Type-C for programming and power
• Qwiic I²C connector for easy expansion
• 12-bit DAC, integrated OPAMP and Real-Time Clock
• CAN controller (external CAN transceiver required)
• 5V logic compatible with the Arduino Nano ecosystem

Technical specifications

• Microcontroller: Renesas RA4M1 (R7FA4M1AB3CFM)
• Processor: Arm Cortex-M4 @ 48MHz
• Flash: 256kB
• SRAM: 32kB
• Data Flash (EEPROM): 8kB
• Operating voltage: 5V
• VIN input voltage: 6-21VDC
• USB: USB Type-C
• Communication: UART, SPI, 2× I²C, CAN controller
• ADC: 14-bit (8 channels)
• DAC: 12-bit
• Dimensions: 45x18mm
• Operating temperature: -40°C to 85°C