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Manufacturer Part Number: ATMEGA328P-AU Manufacturer / Brand: Microchip
Part of Description: AVR AVR® ATmega Microcontroller IC 8-Bit 20MHz 32KB (16K x 16) FLASH 32-TQFP (7x7) 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
Program Memory Size32 kB
Product CategoryARM Microcontrollers – MCU
Package / CaseTQFP-32
Factory Pack Quantity1500
Minimum Operating Temperature– 40 C
Maximum Operating Temperature+ 85 C
Moisture SensitiveYes
Data Bus Width8 bit
Length7 mm
Width7 mm
Unit Weight:0.002469oz

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    The ATMEGA328P-AU is a high-performance, low-power 8-bit AVR microcontroller based on the RISC architecture, manufactured by Microchip Technology (previously Atmel). It is widely used in various embedded applications due to its versatility and robust features.

    Key Features:

    • Processor Core: AVR 8-bit RISC architecture.
    • Clock Speed: Up to 20 MHz operating frequency.
    • Memory:
      • 32 KB of in-system programmable Flash memory for program storage.
      • 2 KB of SRAM for data storage.
      • 1 KB of EEPROM for non-volatile data storage.
    • Peripheral Interfaces:
      • UART, SPI, and I2C communication interfaces.
      • Analog-to-Digital Converter (ADC) with up to 10-bit resolution.
      • Pulse Width Modulation (PWM) for precision control applications.
    • Power Management:
      • Low power consumption with various sleep modes for energy efficiency.
    • Operating Voltage: 1.8V to 5.5V, providing flexibility in different voltage environments.
    • Package Type: Available in various compact surface-mount packages, such as TQFP-32 (Thin Quad Flat Package).

    Typical Applications:

    • Embedded Systems: Used in various embedded applications requiring low-power operation and efficient processing.
    • IoT Devices: Suitable for sensor nodes, smart meters, and other connected devices.
    • Consumer Electronics: Found in appliances, remote controls, and entertainment devices.
    • Industrial Control: Used in automation equipment, motor control, and monitoring systems.
    • Education: Popular in educational settings for learning microcontroller programming and embedded systems design.


    • Proven Reliability: A widely adopted microcontroller known for its robustness and reliability.
    • Rich Peripheral Set: Offers a comprehensive set of peripherals for interfacing with sensors, displays, and communication modules.
    • Extensive Development Ecosystem: Supported by a broad range of development tools, compilers, and libraries for ease of development.
    • Cost-Effective Solution: Provides a cost-effective solution for implementing embedded systems with moderate processing requirements.