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Arduino Uno R4 WiFi

ArduinoRenesas RA4M1 (R7FA4M1AB3CFM#AA0), Espressif ESP32-S3-MINI-1-N8

The Arduino Uno R4 WiFi is a 32-bit board featuring a Renesas RA4M1 MCU and an ESP32-S3 for Wi-Fi/Bluetooth. It offers expanded memory, a 48 MHz clock, and a unique 12x8 LED matrix, maintaining shield compatibility.

In stock

Specifications

24
Main Mcu Clock Speed
48 MHz
Main Mcu Operating Voltage
5 V
Main Mcu Flash Memory
256 kB
Main Mcu Sram
32 kB
Main Mcu Eeprom
8 kB
Main Mcu Adc Resolution
14 bit
Main Mcu Dac Resolution
12 bit
Main Mcu Gpio Current Limit
8 mA
Secondary Mcu Operating Voltage
3.3 V
Secondary Mcu Rom
384 kB
Secondary Mcu Sram
512 kB
Wifi Standard
802.11 b/g/n
Wifi Frequency
2.4 GHz
Wifi Max Bit Rate
150 Mbps
Bluetooth Version
5
Recommended Input Voltage Vin
6-24 V
Usb Input Voltage
5 V
Logic Level
5 V
Digital Io Count
14
Analog Input Count
6
Usb Connector Type
USB-C
Connectivity
Wi-Fi, Bluetooth
Onboard Led Matrix
12x8 red
Operating Temperature
-40 to 85 °C

Pinout

47
PinNameFunctionsNotes
1BOOT
Mode selection
2IOREF
POWER
Reference for digital logic, connected to 5V
3Reset
RESET
4+3V3
POWER
5+5V
POWER
6GND
GND
7GND
GND
8VIN
POWER
9A0
ADCDAC
10A1
ADC
11A2
ADC
12A3
ADC
13A4
ADCI2C
Also SDA for main I2C bus
14A5
ADCI2C
Also SCL for main I2C bus
1SCL
I2C
2SDA
I2C
3AREF
POWER
Analog Reference Voltage
4GND
GND
5D13
GPIOSPICAN
SCK, CANRX0
6D12
GPIOSPI
CIPO
7D11
GPIOPWMSPI
COPI
8D10
GPIOPWMSPICAN
CS, CANTX0
9D9
GPIOPWM
10D8
GPIO
11D7
GPIO
12D6
GPIOPWM
13D5
GPIOPWM
14D4
GPIO
15D3
GPIOPWM
Interrupt Pin
16D2
GPIO
Interrupt Pin
17D1
GPIOUART
TX0
18D0
GPIOUART
RX0
1OFF
POWER
For controlling power supply
2GND
GND
1VRTC
POWER
Battery connection to power RTC only
1CIPO
SPI
2+5V
POWER
3SCK
SPI
4COPI
SPI
5RESET
RESET
6GND
GND
1ESP_IO42
GPIO
MTMS debugging
2ESP_IO41
GPIO
MTDI debugging
3ESP_TXD0
UART
4ESP_DOWNLOAD
GPIO
Boot mode
5ESP_RXD0
UART
6GND
GND

Interactive pinout

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Renesas RA4M1 (R7FA4M1AB3CFM#AA0), Espressif ESP32-S3-MINI-1-N8

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