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Arduino UNO R4 WiFi User Manual

Arduino UNO R4 WiFi
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Arduino® UNO R4 WiFi
2 / 23 Arduino® UNO R4 WiFi Modified: 26/06/2023
Features
The R7FA4M1AB3CFM#AA0, often referred to as RA4M1 in this datasheet, is the main MCU on the UNO R4 WiFi,
connected to all pin headers on the board as well as all communication buses.
Overview
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-to-analog Converter (DAC)
Memory
256 kB Flash Memory
32 kB SRAM
8 kB Data Memory (EEPROM)
Peripherals
Capacitive Touch Sensing Unit (CTSU)
USB 2.0 Full-Speed Module (USBFS)
14-bit ADC
Up to 12-bit DAC
Operational Amplifier (OPAMP)
Power
Operating voltage for RA4M1 is 5 V
Recommended input voltage (VIN) is 6-24 V
Barrel jack connected to VIN pin (6-24 V)
Power via USB-C® at 5 V
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)
See the full datasheet for the R7FA4M1AB3CFM#AA0 in the link below:
R7FA4M1AB3CFM#AA0 datasheet
The ESP32-S3-MINI-1-N8 is the secondary MCU with a built-in antenna for Wi-Fi® & Bluetooth® connectivity. This
module operates on 3.3 V and communicates with the RA4M1 using a logic level translator (TXB0108DQSR).
Overview
Xtensa® dual-core 32-bit LX7 microprocessor
3.3 V operating voltage
40 MHz crystal oscillator

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Arduino UNO R4 WiFi Specifications

General IconGeneral
Operating Voltage5V
Input Voltage6-24V
Digital I/O Pins14
PWM Pins6
Analog Input Pins6
Flash Memory256 KB
SRAM32 KB
EEPROM8 KB
Clock Speed48 MHz
Wi-FiYes
BluetoothYes
USB ConnectorUSB-C
Dimensions68.6 mm x 53.4 mm
DC Current per I/O Pin8 mA
UARTYes
SPIYes
I2CYes
CANNo
MicrocontrollerRA4M1 (Arm Cortex-M4)

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