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: 8-bit microcontrollers – MCU.
• Model Number: Atmega8P-PU.
• Serie: ATMega. Box: DIP-28. 8-bit AVR microcontroller.
• Operating Voltage: 1.8 → 5.5V.
• Maximum operating frequency: 20 MHz.
• Dimensions (excluding pins): 34.8 x 7.5 x 4.57.
• Operating temperature: -40 ~ 85 ° C.
• Technical sheet : https://docs.rs-online.com/5d80/0900766b815965d2.pdf