The Official Arduino Uno R4 एक  Wi-Fi, proudly Made in India, redefines the UNO series with its advanced 32-bit architecture. Powered by the Renesas R7FA4M1AB3CFM microcontroller, this board offers a 48 MHz Arm Cortex-M4 processor, 256 kB Flash, and 32 kB SRAM.

It features built-in WiFi and Bluetooth via the ESP32-S3 module, making IoT projects seamless. The programmable 12×8 LED matrix adds creativity, perfect for animations and games. Designed for beginners and professionals, the UNO R4 WiFi supports 6-24 V input and USB-C power. Enjoy its rich documentation and compatibility with older Arduino shields for enhanced versatility.

Features:

1. 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.
2. Overview
   48 MHz Arm Cortex-M4 microprocessor with a floating point unit (FP
   5 V operating voltage
   Real-time Clock (RTC)
   Memory Protection Unit (MPU)
   Digital-to-analog Converter (DAC)
3. Memory
   256 kB Flash Memory
   32 kB SRAM
   8 kB Data Memory (EEPROM)
4. Peripherals
   Capacitive Touch Sensing Unit (CTSU)
   USB 2.0 Full-Speed Module (USBFS)
   14-bit ADC
   Up to 12-bit DAC
   Operational Amplifier (OPAM
5. 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
6. 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)
7. Wi-Fi
   Wi-Fi support with 802.11 b/g/n standard (Wi-Fi 4)
   Bit rate at up to 150 Mbps
   2.4 GHz band
8. Bluetooth
   Bluetooth 5