The Arduino Nano R4 is an ideal choice for developers who want to transition seamlessly from prototyping to production. It is based on the success of the UNO R4 Minima model and uses the same powerful RA4M1 microcontroller in a compact Nano form factor.

Features

• Modern performance: 32-bit ARM® Cortex®-M4 @ 48 MHz – ideal for compute-intensive applications
• More memory: 256 kB Flash, 32 kB SRAM and 8 kB EEPROM for larger programs and data
• Versatile connectivity: I²C (2x), SPI, UART, CAN (external), 8x ADC (14-bit), 1x DAC (12-bit)
• Built-in RTC with battery backup: perfect for time-based applications, even during power outages
• Compatible with 5 V accessories: backward compatible with older Nano-Shield boards and modules
• Compact and robust: only 45 × 18 mm, wide temperature range (-40 °C – +85 °C)
• Programmable RGB LED: Built-in RGB LED can be programmed to indicate different operating modes, simplifying debugging and system monitoring

Technical specifications

• Microcontroller: Renesas RA4M1 (R7FA4M1AB3CFM)
• Clock speed: 48 MHz
• Memory: 256 kB Flash / 32 kB SRAM / 8 kB EEPROM
• I/O pins: 21x digital, 8x analog (14-bit), 6x PWM
• Communications: UART, SPI, I²C (Qwiic + standard), CAN (external)
• Connections: USB-C, Qwiic-I²C, 5 V & 3.3 V rails
• Operating voltage: 5 V
• Power supply: USB-C or VIN (6–21 V).
• Dimensions: 45 × 18 mm

Contents

• 1× Arduino® Nano R4 board
• Header pins: soldered
• Quick start guide