Arduino presents the Arduino NANO R4, a powerful microcontroller platform in the proven Nano form factor. Based on Renesas’s 32-bit ARM® Cortex®-M4 RA4M1, the board enables developers to efficiently convert prototypes into market-ready products without the need for costly adjustments or changes to the architecture.
Big performance in a small format
Der NANO R4 sets new standards for the Nano class. With 256 kB of flash memory, 32 kB of SRAM and 8 kB of EEPROM, the board is eight times faster than previous Nano versions based on 8-bit AVR microcontrollers. Despite its tiny size (only 18 x 45 mm), it provides a wide range of interfaces, including 21 digital I/Os, eight analogue inputs (14-bit ADC) and dedicated pins for UART, SPI and two I2C buses. A USB-C port provides a convenient power supply and data transfer solution.Ideal for product development
Thanks to its compact, single-sided design and castellated pins, the NANO R4 can be seamlessly integrated into your hardware designs. This makes it ideal for professional applications such as edge computing, system-on-module solutions and IoT product designs. The NANO R4 has a flexible power supply and accepts input voltages from 6 to 21 V, so no additional step-down converters are required.
| Form factor | Nano |
| Microcontroller | R7FA4M1AB3CFM |
| Memory | 256 kB Flash, 32 kB RAM |
| Pinout | Compatible with other Nano board accessories, CAN, DAC and OpAmp, VBAT |
| Connectors | USB-C, QWIIC |
| Extra | RGB Led |
| Operating Voltage | 5 V |
| Voltage range | 6-21 V |
| UART | 1 |
| SPI | 1 |
| I2C | 2 (5 V and 3,3 V (QWIIC)) |
| Pinout | 14 digital, 8 analog, 6 PWM |
High compatibility and easy expansion
A particular highlight is the integrated QWIIC connector. This enables sensors and modules to be swiftly connected via an additional 3.3 V I2C bus, running alongside the standard I2C on pins A4 and A5. This makes the NANO R4 fully compatible with the Modulino series, as well as numerous accessories in the Arduino ecosystem and from third-party providers.
Versatile applications
Whether you are working on initial electronics projects, smart product concepts or near-series developments, the Arduino NANO R4 offers a scalable solution with extensive community and software support. The programmable RGB LED indicator allows the operating status to be displayed visually, making it ideal for debugging or displaying status.
Conclusion
The Arduino NANO R4 combines powerful hardware with maximum flexibility in a minimal format. It is a strong building block for the path from idea to series production for developers who want to efficiently implement future-proof projects.
Images: Arduino, Adobe Stock
