Arduino UNO R4 Minima

  1. Same form factor as UNO R3
  2. Extra onboard peripherals
  3. Inbuilt HID Support
  4. Expanded Memory and Faster Clock Speed than before
SKU: C08-11-MINIMA Categories: ,


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Introducing the Arduino UNO R4 Minima, a groundbreaking addition to the UNO board family. This new launch boasts impressive features, starting with its 32-bit microcontroller. Powered by the RA4M1 series microcontroller from Renesas (R7FA4M1AB3CFM#AA0), which houses a 48 MHz Arm Cortex-M4 microprocessor.

Pin Configuration:

The UNO R4 Minima offers expanded memory capabilities, including 256 kB flash, 32 kB SRAM, and 8 kB data memory (EEPROM). Operating at 5 V, this board ensures compatibility with UNO form factor accessories designed for the same voltage. While previous UNO shields can be used, software compatibility may vary due to the microcontroller change. Experience the UNO R4 Minima’s cutting-edge performance and enhanced features today.


  1. 32-bit development board, being previously based on 8-bit AVR
  2. The board features the standard 14 digital I/O ports, 6 analog channels
  3. dedicated pins for I²C, SPI and UART connections.
  4. Larger memory:
    1. 8 times more flash memory (256 kB)
  5. 16 times more SRAM (32 kB).
  6. Easy power management:
    1. The UNO R4 has a barrel jack connector and supports input voltages from 6-24 V.
  7. This connector is widely popular and removes the need for additional circuitry required to step down the voltage.
  8. Cross compatibility:
    1. The UNO form factor automatically makes it compatible with hundreds of existing third-party shields and other accessories.

Note: For detailed technical Specifications go through Datasheet in the attachment section

Package Includes:

1 x Arduino UNO R4 Minima Board



Arduino UNO R3 VS R4 – Differences Explained in Detail

Difference UNO R3 UNO R4
Microcontroller 8-bit ATmega328p 32-bit Renesas RA4M1
Clock frequency 16 MHz 48 MHz
Wireless module NO *ESP32-S3 Mini
Memory 2KB SRAM, 32KB FLASH,
256 kB Flash, 32 kB RAM
*ESP: 384 kB ROM, 512 kB SRAM
Input voltage (VIN) 6-20 V 6-24 V
Digital I/O pins 14  
Analog input pins 6(10-bit) 6(14-bit)
PWM pins 6(8-bit) 6(12-bit)
DAC pin NO 1(12-bit)
CAN Bus NO 1
Dimensions 68.58 x 53.44 mm 68.6 x 53.4 mm




Arduino UNO R4 Minima


256 kB Flash Memory 32 kB SRAM 8 kB Data Memory (EEPROM)


14x digital pins (GPIO) , D0-D13 6x analog input pins (ADC) , A0-A5 6x PWM pins: D3 , D5 , D6 , D9 , D10 , D11


Capacitive Touch Sensing Unit (CTSU) USB 2.0 Full-Speed Module (USBFS) up to 14-bit ADC up to 12-bit DAC Operational Amplifier (OPAMP)


Recommended input voltage (VIN) is 6-24 V 5 V operating voltage Barrel jack connected to VIN pin Power via USB-C® at 5 V Schottky diodes for overvoltage and reverse polarity protection


1x UART (pin D0 , D1) 1x SPI (pin D10-D13 , ICSP header) 1x I²C (pin A4 , A5 , SDA , SCL) 1x CAN (pin D4 , D5 , external transceiver is required)

Shipping Info


30.0000 g