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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| Pin | Name | Functions | Notes |
|---|---|---|---|
| 1 | BOOT | — | Mode selection |
| 2 | IOREF | POWER | Reference for digital logic, connected to 5V |
| 3 | Reset | RESET | |
| 4 | +3V3 | POWER | |
| 5 | +5V | POWER | |
| 6 | GND | GND | |
| 7 | GND | GND | |
| 8 | VIN | POWER | |
| 9 | A0 | ADCDAC | |
| 10 | A1 | ADC | |
| 11 | A2 | ADC | |
| 12 | A3 | ADC | |
| 13 | A4 | ADCI2C | Also SDA for main I2C bus |
| 14 | A5 | ADCI2C | Also SCL for main I2C bus |
| 15 | SCL | I2C | |
| 16 | SDA | I2C | |
| 17 | AREF | POWER | Analog Reference Voltage |
| 18 | GND | GND | |
| 19 | D13 | GPIOSPICAN | SCK, CANRX0 |
| 20 | D12 | GPIOSPI | CIPO |
| 21 | D11 | GPIOPWMSPI | COPI |
| 22 | D10 | GPIOPWMSPICAN | CS, CANTX0 |
| 23 | D9 | GPIOPWM | |
| 24 | D8 | GPIO | |
| 25 | D7 | GPIO | |
| 26 | D6 | GPIOPWM | |
| 27 | D5 | GPIOPWM | |
| 28 | D4 | GPIO | |
| 29 | D3 | GPIOPWM | Interrupt Pin |
| 30 | D2 | GPIO | Interrupt Pin |
| 31 | D1 | GPIOUART | TX0 |
| 32 | D0 | GPIOUART | RX0 |
| 33 | OFF | POWER | For controlling power supply |
| 34 | GND | GND | |
| 35 | VRTC | POWER | Battery connection to power RTC only |
| 36 | CIPO | SPI | |
| 37 | +5V | POWER | |
| 38 | SCK | SPI | |
| 39 | COPI | SPI | |
| 40 | RESET | RESET | |
| 41 | GND | GND | |
| 42 | ESP_IO42 | GPIO | MTMS debugging |
| 43 | ESP_IO41 | GPIO | MTDI debugging |
| 44 | ESP_TXD0 | UART | |
| 45 | ESP_DOWNLOAD | GPIO | Boot mode |
| 46 | ESP_RXD0 | UART | |
| 47 | GND | GND |
Interactive pinout
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Renesas RA4M1 (R7FA4M1AB3CFM#AA0), Espressif ESP32-S3-MINI-1-N8
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