Description
The Arduino UNO R4 Minima (from here on referred to as UNO R4 Minima) is the first UNO board to feature a 32-
bit microcontroller. It features a RA4M1 series microcontroller from Renesas (R7FA4M1AB3CFM#AA0), which
embeds a 48 MHz Arm® Cortex®-M4 microprocessor. The UNO R4's memory is larger than its predecessors, with
256 kB flash, 32 kB SRAM and 8 kB data memory (EEPROM).
The UNO R4 Minima board's operating voltage is 5 V, making it hardware compatible with UNO form factor
accessories with the same operating voltage. Shields designed for previous UNO revisions are therefore safe to use
with this board but are not guaranteed to be software compatible due to the change of microcontroller.

Features
R7FA4M1AB3CFM#AA0
48 MHz Arm® Cortex®-M4 microprocessor with a floating point unit (FPU)
5 V operating voltage
Real-time Clock (RTC)
Memory Protection Unit (MPU)
Digital Analog Converter (DAC)
Memory
256 kB Flash Memory
32 kB SRAM
8 kB Data Memory (EEPROM)
Pins
14x digital pins (GPIO), D0-D13
6x analog input pins (ADC), A0-A5
6x PWM pins: D3,D5,D6,D9,D10,D11
Peripherals
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)
Power
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
Communication
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)