• ATMEGA328-AU TQFP-32
ATMEGA328-AU TQFP-32

ATMEGA328-AU

ATMEGA328-AU offers 8-bit computing power with a 32K flash memory, 1K EEPROM, and 2K SRAM capacity, operating at a frequency of 20 MHz

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Overview of ATMEGA328-AU

The ATMEGA328-AU is a high-performance, low-power 8-bit AVR microcontroller featuring advanced RISC architecture. It combines 32KB of programmable flash memory, 1KB EEPROM, and 2KB SRAM, providing versatile and reliable computing power for various embedded applications.

Pinout

(Note: The pin configuration below is a general representation. Refer to the specific datasheet for precise details.)

  • VCC: Positive power supply
  • GND: Ground
  • PORTB: Port B
  • PORTC: Port C
  • PORTD: Port D
  • RESET: Reset pin
  • RXD: Receive data pin for UART
  • TXD: Transmit data pin for UART
  • INT0: External interrupt 0
  • INT1: External interrupt 1
  • SCL: I2C clock pin
  • SDA: I2C data pin
  • XTAL1: External clock source input
  • XTAL2: External clock source output

Circuit Diagram

Include a circuit diagram illustrating the connections and operation of the ATMEGA328-AU microcontroller for a visual representation.

Key Features

  • High-Performance AVR Architecture: Utilizes advanced RISC architecture for efficient computing.
  • Low Power Consumption: Offers low-power operation, ideal for battery-powered applications.
  • Flash Memory: Provides 32KB of programmable flash memory for storing program code.
  • EEPROM: Includes 1KB of EEPROM for non-volatile data storage.
  • SRAM: Features 2KB of SRAM for temporary data storage.
  • Wide Operating Voltage Range: Operates from 1.8V to 5.5V, accommodating various power supply configurations.

Note: For detailed technical specifications, please refer to the ATMEGA328-AU datasheet.

Application

  • Embedded Systems: Suitable for various embedded applications, including robotics, IoT devices, and consumer electronics.
  • Sensor Interface: Can interface with a wide range of sensors for data acquisition and processing.
  • Home Automation: Used in home automation systems for controlling appliances and monitoring environmental parameters.

Functionality

The ATMEGA328-AU microcontroller offers versatile computing power with its advanced architecture and ample memory resources. It enables seamless integration into a wide range of embedded applications, providing reliability and performance.

Usage Guide

  • Power Supply: Connect VCC (Pin 7) to the positive power supply and GND (Pin 8) to ground.
  • Programming: Use the appropriate programming tools and software to upload firmware onto the microcontroller's flash memory.
  • I/O Connections: Interface external devices and sensors with the microcontroller's GPIO pins for data exchange.

Frequently Asked Questions

Q: What is the maximum clock speed supported by the ATMEGA328-AU?
A: The ATMEGA328-AU supports a maximum clock speed of 20MHz.

Q: Can the ATMEGA328-AU interface with analog sensors?
A: Yes, the ATMEGA328-AU features built-in analog-to-digital converters (ADCs) for interfacing with analog sensors.

Equivalent

For similar functionalities, consider these alternatives to the ATMEGA328-AU:

  • ATMEGA328P-PU: A variant of the ATMEGA328 with DIP package, suitable for through-hole soldering.
  • ATMEGA32U4-AU: Offers similar performance with additional USB functionality for communication with a host computer.

ATMEGA328-AU

Specifications

The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.

Product Category 8-bit Microcontrollers - MCU RoHS Details
Core AVR Program Memory Size 32 kB
Data RAM Size 2 kB Package / Case TQFP-32
Maximum Clock Frequency 20 MHz ADC Resolution 10 bit
Number of I/Os 23 I/O Supply Voltage - Min 1.8 V
Supply Voltage - Max 5.5 V Mounting Style SMD/SMT
Data Bus Width 8 bit Minimum Operating Temperature - 40 C
Maximum Operating Temperature + 85 C Series ATmega328
Brand Microchip Technology Data RAM Type SRAM
Data ROM Size 1 kB Data ROM Type EEPROM
Interface Type I2C, SPI, USART Moisture Sensitive Yes
Number of ADC Channels 8 Channel Number of Timers/Counters 3 Timer
Processor Series megaAVR Product MCUs
Product Type 8-bit Microcontrollers - MCU Program Memory Type Flash
Factory Pack Quantity 250 Subcategory Microcontrollers - MCU
Tradename AVR Unit Weight 0.002568 oz

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