Arduino Nano R4

The Arduino Nano R4 pairs the Renesas RA4M1 microcontroller with a Nano form factor, featuring USB-C, Qwiic connector, CAN support, RTC, DAC, OpAmp, and HID capabilities.

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Nano R4 merges Arduino’s signature ease of use with the powerful Renesas RA4M1 microcontroller, enabling effortless scaling from prototyping on the UNO R4 to production-ready applications.

Compact and versatile, the Nano R4 maintains the same pinout as other boards in the Nano family and features castellated pins for easy hardware integration, an on-board Qwiic connector for rapid sensor and peripheral expansion, and a programmable RGB LED for intuitive system feedback. Its single-sided component design makes it ideal for space-constrained products and SMD soldering on custom carrier boards, ensuring a seamless transition from lab testing to real-world deployment.

Thanks to its compatibility with familiar Arduino tools and libraries (including those for the Arduino UNO R4 Minima), the Nano R4 offers developers and designers a streamlined path to build compact, connected solutions.

Available with loose, unsoldered headers, or with headers pre-soldered - please select an option before adding to cart.

Features

• Renesas RA4M1 microcontroller with 32-bit Arm® Cortex®-M4 core (48 MHz)
• USB-C® connector
• Qwiic I²C connector (3.3V logic)
• CAN bus support (requires external transceiver)
• 12-bit DAC
• Built-in operational amplifier (OPAMP)
• Real-time clock (RTC)
• 5V operating voltage
• Mouse/keyboard HID emulation
• Compatible with standard Arduino Nano form factor

Specifications

Microcontroller	Renesas RA4M1 (Arm® Cortex®-M4)
USB	USB-C® programming port
Pins	Digital I/O pins: 21 (all the exposed I/O can be used as digital I/O pins)
	Analog input pins: 8
	DAC: 1
	PWM pins: 6
	External interrupts: 2, 3
	DAC: A0
Misc	OpAmp: A1, A2, A3
	VRTC: J5
Communication	UART: 1
	I2C: 2 (5V: A4, A5 / 3.3V: Qwiic, J3, J4)
	SPI: 1
	CAN: 1
Power	Circuit operating voltage: +5 VDC
	Input voltage (VIN): +6–21 VDC
	DC current per I/O pin: 8 mA
Clock speed	Main core: 48 MHz
Memory (RA4M1)	Flash: 256 kB
	RAM: 32 kB
	EEPROM: 8 kB
Dimensions	Width: 18 mm
	Length: 45 mm

Resources

• Product documentation
• Pinout
• Datasheet
• Schematics
• CAD Files
• STEP Files
• Product number:
  • With loose headers: ABX00142
  • With pre-soldered headers: ABX00143

Package Contents

Either (select option before adding to cart):

• 1x Arduino Nano R4 (no headers)
• 2x Header strips

or

• 1x Arduino Nano R4 (with pre-soldered headers)