Atmega8A Microcontroller

Atmega8A Microcontroller 

The ATmega8A is an 8-bit AVR microcontroller developed by Atmel (now Microchip Technology). It belongs to the ATmega family, which is known for high performance, low power consumption, and ease of programming.

The microcontroller is based on Harvard architecture with a RISC instruction set, allowing most instructions to execute in a single clock cycle. The ATmega8A integrates Flash program memory, SRAM, EEPROM, digital I/O ports, timers, ADC, and serial communication interfaces on a single chip, making it suitable for a wide range of embedded control and automation applications.

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Features

• 8-bit AVR RISC CPU
• Operating voltage: 2.7 V – 5.5 V
• Maximum clock frequency: Up to 16 MHz
• Program memory: 8 KB Flash
• Data memory:
• 1 KB SRAM
• 512 bytes EEPROM
• I/O pins: 23 programmable digital I/O pins
• Timers/Counters:
• Two 8-bit timers
• One 16-bit timer with PWM
• Analog features:
• 10-bit ADC with 6 channels (DIP package)
• Communication interfaces:
• USART
• SPI
• I²C (TWI)
• PWM outputs
• Interrupt system
• Watchdog Timer (WDT)
• Low-power modes: Idle, Power-save, Power-down
• In-System Programming (ISP)
• Available packages: DIP-28 and SMD (TQFP, QFN)

Applications

• Embedded control systems
• Home and industrial automation
• Motor and relay control
• Sensor interfacing and data acquisition
• Communication-based projects
• Robotics
• Educational and student projects
• DIY and Arduino-based applications