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Carte ARDUINO UNO Microcontrôleur ATMega328

What is an ATmega328 microcontroller?
The ATMega328 is an 8-bit microcontroller of the AVR family which can be programmed in C/C++ language. The main interest of the ARDUINO cards (other models exist : Mega, Nano...) is their ease of implementation. A development environment (IDE), based on open-source tools, is provided.
What is the microcontroller of Arduino Uno card?
The microcontroller of the Arduino UNO card is an ATMega328. It is an ATMEL microcontroller of the AVR 8bits family. The main features are : Multi-function pins: all pins have several different functions, chosen by programming. They therefore have several names on the pinout.
What is the difference between Arduino Uno and ATmega328P?
The ATmega328P also features 1kb of EEPROM, a memory which is not erased when powered off. The Arduino UNO features a barrel plug connector, that works great with a standard 9V battery. All you need to know to get started with your new Arduino board. This library allows you to communicate with I2C / TWI devices.
How does Arduino Uno differ from other Arduino boards?
The Uno differed from all preceding boards by featuring the ATmega328P microcontroller and an ATmega16U2 (Atmega8U2 up to version R2) programmed as a USB-to-serial converter. In June 2023, Arduino released two new flavors of the Uno; R4 Minima and R4 Wifi.

What is an ATmega328 microcontroller?