![]() ![]() Microcontroller ATmega328 Operating Voltage 5V Input Voltage (recommended) 7-12V Input Voltage (limits) 6-20V Digital I/O Pins 14 (of which 6 provide PWM output) Analog Input Pins 6 DC Current per I/O Pin 40 mA DC Current for 3.3V Pin 50 mA Flash Memory 32 KB of which 0. ![]() ![]() The Uno is the latest in a series of USB Arduino boards, and the reference model for the Arduino platform. Arduino® UNO R4 WiFi 7 / 2 3 Arduino® UNO R4 WiFi Modied. The Uno and version 1.0 will be the reference versions of Arduno, moving forward. Arduino® UNO R4 WiFi 1 / 2 3 Arduino® UNO R4 WiFi Modied: Product Reference Manual SKU: ABX00087 Description The Arduino® UNO R4 WiFi is the rst UNO board to feature a 32-bit microcontroller and an ESP32-S3 Wi-Fi. Instead, it features the Atmega8U2 programmed as a USB-to-serial converter."Uno" means one in Italian and is named to mark the upcoming release of Arduino 1.0. The Uno differs from all preceding boards in that it does not use the FTDI USB-to-serial driver chip. It contains everything needed to support the microcontroller simply connect it to a computer with a USB cable or power it with a AC-to-DC adapter or battery to get started. It has 14 digital input/output pins (of which 6 can be used as PWM outputs), 6 analog inputs, a 16 MHz crystal oscillator, a USB connection, a power jack, an ICSP header, and a reset button. The Arduino Uno Rev3 is a microcontroller board based on the ATmega328 (datasheet). ![]()
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