(Discontinued) Arduino UNO R4 Minima

Official Arduino UNO R4 Minima – 32-bit Arm Cortex-M4 Development Board (ABX00080)

The Official Arduino UNO R4 Minima marks a major evolution in the UNO family, introducing a powerful 32-bit architecture while preserving the iconic UNO form factor. Built around the Renesas RA4M1 microcontroller (R7FA4M1AB3CFM), the board is powered by a 48 MHz Arm® Cortex®-M4 CPU, delivering significantly improved performance, efficiency, and modern peripheral support.

Compared to classic UNO boards based on 8-bit AVR microcontrollers, the UNO R4 Minima offers expanded memory with 256 kB Flash, 32 kB SRAM, and 8 kB EEPROM, enabling larger programs, more variables, and advanced applications.

Operating at 5 V logic and maintaining full UNO R3 mechanical compatibility, the UNO R4 Minima works seamlessly with most existing shields and accessories. It also introduces new onboard peripherals such as DAC, CAN bus support, capacitive touch sensing, and an operational amplifier, making it an excellent choice for both learning and professional prototyping.

Technical Details

Memory

Input / Output

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