UNO Wi-Fi Rev 2 Board

Arduino’s UNO board with Wi-Fi connectivity featuring the Microchip ATMEGA4809 microcontroller

Image of Arduino's UNO Wi-Fi Rev 2 Board The Arduino Uno Wi-Fi is functionally the same as an Arduino Uno Rev3 except it incorporates an 8-bit microprocessor from Microchip, it has an onboard inertial measurement unit (IMU), and users can connect it to a Wi-Fi network with the onboard Wi-Fi module. The Wi-Fi connection is secured by the ECC608 crypto chip accelerator. It has 14 digital input/output pins (of which six can be used as PWM outputs), six analog inputs, a 16 MHz ceramic resonator, a USB connection, a power jack, an ICSP header, and a reset button. It contains everything needed to support the microcontroller; simply connect it to a computer with a USB cable or power it with an AC-to-DC adapter or battery to get started. The Wi-Fi module is a self-contained SoC with integrated TCP/IP protocol stack that can give access to a Wi-Fi network (or the device can act as an access point). One useful feature of Uno Wi-Fi is support for over-the-air (OTA) programming, either for transfer of Arduino sketches or Wi-Fi firmware.

The ATmega4809 is a microcontroller featuring the 8-bit AVR® processor with hardware multiplier, running at up to 20 MHz and with up to 48 KB Flash, 6 KB SRAM, and 256 bytes of EEPROM in 48-pin packages. The series uses the latest Core Independent Peripherals (CIPs) with low power features, including Event System, intelligent analog, and advanced peripherals.

  • Input voltage: 7 V to 12 V
  • Digital I/O pins
  • Interfaces: 20
  • I2C, SPI, UART
  • PWM output 5
  • Analog I/O pins 6/0
  • Weight 8.9 g
  • Product Code ABX00021
ATMEGA4809 Features
  • Three sleep modes:
    • Idle
    • Standby
    • Power down
  • Hardware multiplier
  • Event system

Arduino Board

ImageManufacturer Part NumberDescriptionTypeFrequencyFor Use With/Related ProductsAvailable QuantityView Details
ARDUINO UNO WIFI REV2ABX00021ARDUINO UNO WIFI REV2Transceiver; 802.11 b/g/n (Wi-Fi, WiFi, WLAN)2.4GHzATmega4809331 - ImmediateView Details

Associated Microchip MCU

ImageManufacturer Part NumberDescriptionPeripheralsProgram Memory SizeData ConvertersAvailable QuantityView Details
IC MCU 8BIT 48KB FLASH 48TQFPATMEGA4809-AFRIC MCU 8BIT 48KB FLASH 48TQFPBrown-out Detect/Reset, POR, PWM, WDT48KB (48K x 8)A/D 16x10b1839 - ImmediateView Details
IC MCU 8BIT 48KB FLASH 48UQFNATMEGA4809-MFRIC MCU 8BIT 48KB FLASH 48UQFNBrown-out Detect/Reset, POR, WDT48KB (24K x 16)A/D 5x10b4231 - ImmediateView Details
Published: 2018-11-12