UNO R4 Minima

The Arduino UNO R4 Minima is the first UNO board featuring a 32-bit microcontroller, the RA4M1 from Renesas. It is faster, has more memory and has a number of built-in features such as a DAC, RTC and HID. The UNO R4 Minima is a 5 V only board.

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The UNO R4 Minima features a microcontroller based on the Renesas RA4M1 (Arm® Cortex®-M4) with an operating voltage of 5 V. It has 14 digital I/O, 6 analog inputs with up to 14-bit resolution, a clock speed of 48 MHz, and 32 kB SRAM, 256 kB flash memory & 8 kB of EEPROM.

It features a DAC for audio projects, RTC for accurate time tracking and HID for emulating a keyboard/mouse. The barrel jack plug (VIN) supports voltages at up to 24V, making it compatible with common higher voltage adapters.

UNO Form Factor
Cheat Sheet
A reference to all technical features on this board, with pointers to additional documents.
The UNO R4 Minima is the first UNO to feature a USB-C® connector.
Real-Time Clock (RTC)
Keep track of time & date and set alarms with the built-in RTC.
Digital-to-Analog Converter (DAC)
Use the onboard 12-bit DAC to build sophisticated audio projects.
Mouse/Keyboard Emulation (HID)
Build game controllers by emulating a mouse/keyboard.
Power up to 24 V
Power your UNO R4 Minima board through the VIN Pin with any voltage between 6-24 V.
Connect your board to other CAN devices. This requires an external transceiver.
Pressure Sensor
ADC Resolution
This board supports analog read resolutions at up to 14-bit.