Arduino® Nano R4

Arduino® Nano R4

Arduino® Nano R4 is the newest and most powerful member of Arduino®'s popular Nano series. Equipped with the Renesas RA4M1 32-bit microcontroller, this board offers high processing power, expanded memory, and a wide range of peripherals in a compact form factor. By preserving the classic Nano form factor, it provides full compatibility with existing shields and accessories. With its 5V operating voltage, built-in Qwiic connector, and castellated pin design, it is an ideal choice for both prototyping and production-oriented projects. Whether you are working on embedded systems, industrial automation, or custom hardware designs, Arduino® Nano R4 delivers reliable performance.

With a 48 MHz clock speed, this board can easily perform complex calculations and support large projects with 256 kB Flash memory, 32 kB SRAM, and 8 kB EEPROM. It is equipped with features such as a built-in 12-bit DAC, CAN Bus, OP AMP, Real-Time Clock (RTC), and programmable RGB LED. The Qwiic connector simplifies sensor and actuator integration, while the castellated pins make integration into custom PCBs easier. The USB-C port improves compatibility with modern devices, and HID (Human Interface Device) support allows it to behave like a mouse or keyboard when connected to your computer. This feature provides a major advantage for interactive projects.

Arduino® Nano R4 is especially optimized for embedded systems, industrial automation, and prototyping projects. Its compact 18 x 45 mm dimensions, single-sided component design, and production-oriented features offer a reliable solution for projects with space constraints. Supported by Arduino®'s broad ecosystem and familiar development environment, this board can be easily integrated with existing libraries and community projects. It is a suitable solution for every need, from beginner-level projects to professional applications.

Highlighted Innovations:

• 32-bit Microcontroller: Offers a 48 MHz clock speed with the 32-bit Renesas RA4M1 (Arm® Cortex®-M4) microcontroller.

• Expanded Memory: Offers 256 kB Flash, 32 kB SRAM, and 8 kB EEPROM.

• USB-C Connection: Uses a modern and durable USB-C port.

• Additional Peripherals: Provides advanced capabilities such as a 12-bit DAC, CAN Bus, OP AMP, Real-Time Clock (RTC), and programmable RGB LED.

• Qwiic Connector: Nano R4 offers a built-in Qwiic I²C connector for fast sensor and peripheral integration.

• HID Support: Nano R4 offers built-in HID support for mouse and keyboard emulation.

Arduino® Nano R4 Technical Specifications:

• Board Name: Arduino® Nano R4

• SKU: ABX00142

• Microcontroller: Renesas RA4M1 (Arm® Cortex®-M4)

• USB: USB-C® Programming Port

• Digital I/O Pins: 21 (all exposed I/O pins can be used as digital I/O)

• Analog Input Pins: 8

• DAC: 1 (12-bit, on A0 pin)

• PWM Pins: 6

• External Interrupts: 2, 3

• UART: 1x

• I2C: 2x (5V: A4, A5 / 3.3V: Qwiic, J3, J4)

• SPI: 1x

• CAN: 1x CAN Bus (external transceiver required)

• Circuit Operating Voltage: 5V

• Input Voltage (VIN): 6-21V

• DC Current per I/O Pin: 8 mA

• Clock Speed: Main core 48 MHz

• Memory: 256 kB Flash, 32 kB RAM, 8 kB EEPROM

• Dimensions: 18 mm (Width) x 45 mm (Length)

• Additional Features: Real-Time Clock (RTC), 14-bit ADC resolution, HID support, Qwiic I²C connector, OP AMP, programmable RGB LED

• Certifications: CE, FCC, RoHS, REACH, WEEE, UKCA, RCM, ISED/IC

Power:

• Operating Voltage: 5V

• Input Voltage (VIN): 6-21V

• Power Sources: USB-C (5V), VIN pin

• Protection: Overvoltage and reverse polarity protection

• Current per I/O Pin: 8 mA

Memory:

• Flash Memory: 256 kB

• SRAM: 32 kB

• EEPROM: 8 kB

Input/Output:

• Digital I/O Pins: 21 (all exposed I/O pins can be used as digital I/O, 6 support PWM)

• Analog Input Pins: 8 (A0-A7, 14-bit ADC resolution)

• DAC: 1 (12-bit, on A0 pin)

• OP AMP: A1, A2, A3 pins

• VRTC: J5 pin

Communication:

• UART: 1x

• I2C: 2x (5V: A4, A5 / 3.3V: Qwiic, J3, J4)

• SPI: 1x

• CAN Bus: 1x (external transceiver required)

Programming:

• Programming Environment: Arduino® IDE, Arduino® Cloud Editor

• HID Support: Mouse and keyboard emulation

USB Overcurrent Protection:

• Protection: Protects the USB port against short circuits and overcurrent

• Power Selection: Automatic power selection between USB and VIN

Frequently Asked Questions:

• Are sketches written for Arduino® UNO R4 Minima compatible with Arduino® Nano R4? Yes, sketches written for Arduino® UNO R4 Minima are compatible with Arduino® Nano R4. However, the necessary adjustments should be made in the sketch by taking pinout differences into account.

• Can hardware compatible with Arduino® Nano (A000005) be used with Arduino® Nano R4? Yes, Arduino® Nano R4 is designed to preserve the same pinout and electrical compatibility as previous Nano models. Existing shields and hardware can be used smoothly, so you do not need to make major changes to upgrade your projects.

• Can sketches developed for Arduino® Nano (A000005) be used on Nano R4? Yes, sketches developed using the Arduino® API are generally compatible. However, some changes may be required for compatibility in sketches that contain instructions specific only to the AVR architecture.

Useful Links / Documents:

• Arduino® IDE
• Arduino® Nano R4 Official Documentation
• Arduino® Nano R4 Datasheet
• Arduino® Nano R4 Technical Drawings and CAD Files
• Arduino® Lessons Blog Series
• Arduino® Lessons Video Series

Products That Can Be Used Together:

• Arduino® Sensors and Modules
• Arduino® Shield Types
• Tools and Equipment
• Component Types
• Soldering and Prototyping Equipment
• Arduino® Books

Similar Products:

• Arduino® Models
• Arduino® Sets