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Manufacturer Part Number: ATMEGA128-16AU Manufacturer / Brand: Microchip
Part of Description: IC MCU 8BIT 128KB FLASH 64TQFP Lead Free Status / RoHS Status: table_img Lead free / RoHS Compliant
Ship From: HK/Shen Zhen Shipment Way: DHL/Fedex/TNT/UPS

Product parameters

Mounting StyleSMD/SMT
Package / CaseTQFP-64
Interface TypeI2C, SPI
Height1 mm
Minimum Operating Temperature– 40 C
Maximum Operating Temperature+ 85 C
Factory Pack Quantity90
Watchdog TimersWatchdog Timer
Width14 mm
Unit Weight0.012720oz

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    The ATmega128-16AU is a high-performance 8-bit microcontroller from Atmel (now Microchip Technology), featuring advanced RISC architecture. It offers a wide range of features suitable for various embedded applications requiring robust performance and versatile functionality.

    Key Features:

    • Advanced RISC Architecture: High-performance, low-power AVR® 8-bit microcontroller architecture.
    • High-Speed Operation: Runs at up to 16 MHz clock frequency.
    • Memory: 128 KB of in-system programmable Flash memory for program storage.
    • SRAM: 4 KB of static RAM for data storage.
    • EEPROM: 4 KB of internal EEPROM for non-volatile data storage.
    • Peripheral Features:
      • Multiple USARTs (Universal Synchronous and Asynchronous Receiver Transmitters).
      • SPI (Serial Peripheral Interface) and I2C (Inter-Integrated Circuit) communication interfaces.
      • Multiple timers/counters for precise timing and PWM (Pulse Width Modulation) output.
      • Analog-to-Digital Converter (ADC) with multiple channels for analog sensor interfacing.
      • Digital-to-Analog Converter (DAC) for analog output generation.
    • Power Management: Sleep modes and power-saving features for energy-efficient operation.
    • Operating Voltage: Typically operates at 5V, with compatibility down to 2.7V.
    • Packages: Available in various package options, including TQFP and QFN, suitable for different application requirements.

    Typical Applications:

    • Embedded Systems: Used in a wide range of embedded applications such as industrial control systems, consumer electronics, and automotive applications.
    • Data Acquisition Systems: Ideal for systems requiring analog and digital signal processing and data acquisition.
    • Communication Interfaces: Suitable for applications requiring UART, SPI, and I2C communication protocols.
    • Motor Control: Used in motor control applications requiring precise timing and PWM control.
    • Sensor Interfaces: Interfaces with various sensors and analog devices for data acquisition and processing.


    • High Performance: Advanced RISC architecture with high-speed operation.
    • Versatile Connectivity: Multiple communication interfaces and peripheral features.
    • Flexible Memory Options: Ample Flash memory, SRAM, and EEPROM for program and data storage.
    • Wide Application Range: Suitable for diverse applications in industrial, consumer, and automotive sectors.
    • Low Power Consumption: Power-saving features enhance energy efficiency.


    For detailed technical specifications and further information, refer to the ATmega128-16AU datasheet.

    The ATmega128-16AU microcontroller provides a robust solution for embedded systems requiring high performance, versatility, and low power consumption, making it a popular choice among developers for various applications.