Arduino
Uno R4 WiFi
Manufactured By:Arduino
Part Number:ABX00087
The Arduino® UNO R4 WiFi is the first UNO board to feature a 32-bit microcontroller and an ESP32-S3 Wi-Fi® module (ESP32-S3-MINI-1-N8). It features a RA4M1 series microcontroller from Renesas (R7FA4M1AB3CFM#AA0), based on a 48 MHz Arm® Cortex®-M4 microprocessor. The UNO R4 WiFi's memory is larger than its predecessors, with 256 kB flash, 32 kB SRAM and 8 kB of EEPROM. The RA4M1's operating voltage is fixed at 5 V, whereas the ESP32-S3 module is 3.3 V. Communication between these two MCUs are performed via a logic level translator (TXB0108DQSR).
Features
| Microcontroller | Renesas RA4M1 (Arm® Cortex®-M4) | |
|---|---|---|
| Radio Module | ESP32-S3-MINI-1-N8 | |
| USB | USB-C® | Programming Port |
| Pins | Digital I/O Pins | 14 |
| Analog input pins | 6 | |
| DAC | 1 | |
| PWM pins | 6 | |
| Communication | UART | Yes, 1x |
| I2C | Yes, 1x | |
| SPI | Yes, 1x | |
| CAN | Yes 1 CAN Bus | |
| Power | Circuit operating voltage | 5 V (ESP32-S3 is 3.3 V) |
| Input voltage (VIN) | 6-24 V | |
| DC Current per I/O Pin | 8 mA | |
| Clock speed | RA4M1 | 48 MHz |
| ESP32-S3-MINI-1-N8 | up to 240 MHz | |
| Memory | RA4M1 | 256 kB Flash, 32 kB RAM |
| ESP32-S3-MINI-1-N8 | 384 kB ROM, 512 kB SRAM | |
| Dimensions | Width | 68.85 mm |
| Length | 53.34 mm | |