The ATMEGA128 is an 8-bit AVR microcontroller from Atmel (now Microchip Technology). It features 128KB of in-system self-programmable Flash memory, 4KB of SRAM, 4KB of EEPROM, 53 general purpose I/O lines, 32 general purpose working registers, real time counter, three flexible Timer/Counters with compare modes, USART, programmable watchdog timer with internal oscillator, SPI serial port, and six software selectable power saving modes. Due to its 'END - OF - LIFE' status, designers are likely moving to newer, pin-compatible or improved microcontrollers.

Applications

• Industrial Control Systems
• Embedded Systems
• Robotics
• Automotive Electronics
• Consumer Electronics

Features

• 128KB Flash Memory: Large memory capacity for complex applications.
• 4KB SRAM: Sufficient RAM for data storage and processing.
• 4KB EEPROM: Non-volatile memory for storing configuration data.
• 53 I/O Lines: Versatile I/O capabilities for interfacing with various peripherals.
• Multiple Timer/Counters: Provides precise timing and control capabilities.

Benefits

• Versatile Functionality: Suitable for a wide range of embedded applications.
• High Performance: AVR architecture provides efficient processing.
• Flexible Memory Configuration: Allows for efficient memory usage.
• Easy Programming: Supports various programming languages and tools.

Additional Details

The ATMEGA128 operates at a clock frequency of up to 16 MHz and has a wide operating voltage range. It is commonly packaged in a TQFP or DIP package. The USART provides asynchronous and synchronous serial communication capabilities. The SPI port allows for communication with other SPI devices. The programmable watchdog timer ensures system stability. Because it is end-of-life, new designs should strongly consider migrating to updated microcontrollers in the AVR family or from other manufacturers.