Difference Between Arduino and ATmega2560 AVR What was an Atmel AVR ATmega328 microcontroller is now a Microchip AVR ATmega328 microcontroller. Atmel was bought out by Microchip, so AVR microcontrollers are no longer an Atmel product, but a Microchip product. AVR ManufacturerĪVR microcontrollers were formerly manufactured by a company called Atmel. The microcontroller then runs or executes the sketch when the Arduino is powered up or reset after programming. ![]() When an Arduino sketch is loaded to the Arduino it is actually loaded to memory inside the microcontroller chip. On an Arduino, the microcontroller is the main component that does all of the work. Difference Between Arduino and ATmega328: Arduino Uno with ATmega328 AVR MicrocontrollerĪs an Amazon Associate I earn from qualifying purchases: What the Microcontroller Does In this case it is a small square chip soldered on top of the Arduino Uno. There are some Arduino Uno boards that have a surface mount ATmega328 chip. The ATmega328 plugs into a socket in the Arduino Uno as shown in the image below. ![]() The exact part number of this chip is ATMEGA328P-PU as found printed on the top of the chip. The image below shows an AVR ATmega328 microcontroller chip. ATmega328 microcontrollers are from the 8-bit AVR microcontroller family. What is the difference between Arduino and ATmega328? In short an ATmega328 is a microcontroller chip found on Arduino Uno boards. Difference Between Arduino and ATmega328 AVR
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