ATMEGA328-AU ATMEGA328-AU is an 8-bit AVR microcontroller from Microchip Technology with 32KB Flash memory, 2KB RAM, and 1KB EEPROM. It operates at up to 20 MHz and includes 23 I/O lines in a 32-TQFP package.
Mfr Part #:

ATMEGA328-AU

Available from 3 distributors
Mfr Name: Microchip Technology
Microchip Technology
ATMEGA328-AU is an 8-bit AVR microcontroller from Microchip Technology with 32KB Flash memory, 2KB RAM, and 1KB EEPROM. It operates at up to 20 MHz and includes 23 I/O lines in a 32-TQFP package.
✓ Total Stock: 6,255 pcs

ATMEGA328-AU Available from 3 distributors

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ATMEGA328-AU Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Connectivity
Core Processor
Core Size
Data Converters
EEPROM Size
Mounting Type
Number of I
Operating Temperature
Oscillator Type
Peripherals
Program Memory Size
Program Memory Type
RAM Size
Speed
Supplier Device Package
Voltage

ATMEGA328-AU Description

Short technical summary and product information.

The ATMEGA328-AU is an 8-bit AVR microcontroller from Microchip Technology based on the enhanced RISC architecture. It features 32KB of in-system self-programmable Flash, 2KB SRAM, and 1KB EEPROM, with high endurance (10,000 write/erase cycles for Flash, 100,000 for EEPROM). It operates at speeds up to 20 MHz, achieving up to 20 MIPS throughput.

 

Peripheral and connectivity features include two 8-bit timers, one 16-bit timer, six PWM channels, an 8-channel 10-bit ADC, and temperature measurement capability. Connectivity options include I²C, SPI, and USART. The device also includes brown-out detection, power-on reset, and a watchdog timer.

 

The MCU is supplied in a 32-TQFP package (7x7 mm) with surface mount mounting. It operates over a voltage range of 1.8V to 5.5V and a temperature range of -40°C to 85°C. The device has 23 I/O lines and supports an internal oscillator.

ATMEGA328-AU Quick Information

Product Type: Microcontroller
Canonical Name: Microchip Technology ATMEGA328-AU AVR Microcontroller
Subcategory: 8-bit Microcontroller

ATMEGA328-AU Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

ATMEGA328-AU Features

  • 8-bit AVR core with RISC architecture.
  • 32KB Flash program memory storage.
  • Supports I²C, SPI, and USART interfaces.
  • 23 I/O lines in a 32-TQFP package.
  • Operates from 1.8V to 5.5V supply.

ATMEGA328-AU Applications

  • Ideal for embedded control systems.
  • Used in sensor data acquisition applications.
  • Suitable for motor control via PWM.
  • Can implement communication interfaces.
  • Works in battery-powered portable devices.

ATMEGA328-AU FAQs

7 frequently asked questions generated from this part’s specifications.
What is the operating voltage range of the ATMEGA328-AU?

1.8V to 5.5V.

What package does the ATMEGA328-AU come in?

32-TQFP (7x7 mm) surface mount package.

What is the operating temperature range?

-40°C to 85°C.

Is the ATMEGA328-AU RoHS compliant?

RoHS3 compliant (unverified).

What is the core architecture and maximum speed?

8-bit AVR core, up to 20 MHz.

What are the memory sizes?

32KB Flash, 2KB SRAM, 1KB EEPROM.

How many I/O pins are available?

23 I/O lines.

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