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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)