Description
The Arduino UNO R4 WiFi is the first UNO board to feature a 32-bit microcontroller and an ESP32-S3 WiFi module (ESP32-S3-MINI-1-N8). It features an RA4M1 series microcontroller from Renesas (R7FA4M1AB3CFM), which embeds a 48 MHz Arm® Cortex®-M4 microprocessor. The UNO R4 WiFi’s memory is larger than its predecessors, with 256kB flash, 32kB SRAM and 8kB data memory (EEPROM). The RA4M1’s operating voltage is fixed at 5VDC, whereas the ESP32-S3 module is 3.3VDC. Communication between these two MCUs is performed via a logic-level translator. Furthermore, this versatile board boasts a convenient on-board 12×8 LED matrix, a Qwiic connector, VRTC pin, and an OFF pin, covering all potential needs makers will have for their next project.
Features:
| CATEGORY | SPECIFICATION |
|---|---|
| Board Type | Arduino UNO R4 WiFi (Clone – Not Original Arduino) |
| Main Microcontroller | Renesas R7FA4M1AB3CFM (48 MHz Arm® Cortex®-M4 with FPU) |
| WiFi Co-Processor | ESP32-S3 (ESP32-S3-MINI-1-N8) |
| Flash Memory (Code) | 256 KB |
| SRAM | 32 KB |
| EEPROM / Data Flash | 8 KB |
| Input Voltage (DC Jack) | 4V – 18V DC |
| Operating Voltage | RA4M1: 5V, ESP32-S3: 3.3V |
| USB Connector | USB Type-C |
| Digital I/O Pins | 14 (D0 – D13) |
| Analog Input Pins | 6 (A0 – A5) |
| PWM Pins | 6 (D3, D5, D6, D9, D10, D11) |
| Communication Interfaces | 1× UART, 1× I2C (SDA/SCL), 1× SPI, 1× CAN (external transceiver required) |
| Peripherals | Capacitive Touch Unit, USB 2.0 Full Speed (HID support), RTC with VRTC pin, 14-bit ADC, 12-bit DAC, Operational Amplifier |
| Extra Features | 12×8 Red LED Matrix (96 pixels), OFF power pin, DIP switch to switch USB between RA4M1 and ESP32-S3 |
| Operating Temperature | -40°C to +85°C |
| Dimensions | ~68.58 × 53.34 × 15 mm |
Package Includes:
- 1 x Arduino UNO R4 WiFi (Generic)
- 1 x Cable
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