The description :

• A microcontroller is an integrated and compact circuit, designed to govern a specific operation and in an integrated system.
• It includes processor, memory, and input and output devices on a single card or chip.
• These circuits are used in vehicles, robots, industrial machines, medical devices, mobile radio transceivers, vending machines and even household appliances.

Specifications:

• Type: IC chip.
• Model Number: Atmega328P-PU.
• Serie: ATMega.
• Box: DIP28.
• Number of pins: 28. 8-bit AVR microcontroller.
• 32KB ISP flash memory with read-while-write capabilities.
• 1024B EEPROM.
• 2 KB of SRAM memory.
• 6 analog inputs (10-bit resolution).
• 14 digital input / output (I / O) pins of which 6 can be used as pulse width modulation (PWM) outputs.
• Direct current: 40 mA per I / O pin.
• Operating Voltage: 1.8 to 5.5 volts.
• Maximum operating frequency of 20 MHz.
• 2-wire byte-oriented serial interface (I²C).
• Dimensions (excluding pins): 35.5mm x 8.6mm x 3.33mm.
• Operating temperature: -40 ~ 85 ° C.
• Technical sheet : https://www.mouser.com/pdfdocs/gravitech_atmega328_datasheet.pdf

Advantages :

• High computing speed.
• strong data processing capacity.
• Stable performance.
• long life expectancy.
• Compatible for ARDUINO UNO R3.