ATMEGA324A-AU 8-bit AVR microcontroller with 32KB Flash, 2KB SRAM, 1KB EEPROM, 20MHz clock, and 32 I/O pins in a 44-TQFP package.
Mfr Part #:

ATMEGA324A-AU

Available from 3 distributors
Mfr Name: Microchip Technology
Microchip Technology
8-bit AVR microcontroller with 32KB Flash, 2KB SRAM, 1KB EEPROM, 20MHz clock, and 32 I/O pins in a 44-TQFP package.
✓ Total Stock: 4,778 pcs

ATMEGA324A-AU Available from 3 distributors

✓ Authorised
✓ Non-Authorised

ATMEGA324A-AU Specifications Quick View

Most important parameters for selection – full specs in datasheet.
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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

ATMEGA324A-AU Description

Short technical summary and product information.

The ATMEGA324A-AU is an 8-bit AVR microcontroller from Microchip Technology featuring 32KB of in-system self-programmable Flash memory, 2KB SRAM, and 1KB EEPROM. It operates at up to 20 MHz and supports a supply voltage range of 1.8V to 5.5V, making it suitable for low-power and battery-powered applications. The device includes 32 general-purpose I/O lines, an 8-channel 10-bit ADC, and peripherals such as two 8-bit timers, one 16-bit timer, and 6 PWM channels. Connectivity options include I²C, SPI, and UART/USART. The microcontroller is available in a 44-lead TQFP (10x10 mm) package and operates over the industrial temperature range of -40°C to +85°C. Common applications include industrial control, automation, sensor interfacing, and consumer electronics.

ATMEGA324A-AU Quick Information

Product Type: Microcontroller
Series: ATmega
Canonical Name: ATMEGA324A-AU
Subcategory: 8-bit Microcontroller

ATMEGA324A-AU Compliance

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

ATMEGA324A-AU Features

  • 8-bit AVR MCU with 32KB Flash
  • Up to 20 MHz operating speed
  • 1.8V to 5.5V supply voltage range
  • 32 I/O pins with serial connectivity
  • -40°C to 85°C operating temperature

ATMEGA324A-AU Applications

  • Ideal for embedded control and automation systems
  • Used in industrial sensor and actuator interfaces
  • Suitable for IoT edge node processing tasks
  • Applicable in motor control with PWM outputs
  • Designed for low-power battery-operated devices

ATMEGA324A-AU FAQs

7 frequently asked questions generated from this part’s specifications.
What is the operating voltage range of the ATMEGA324A-AU?

The supply voltage range is 1.8V to 5.5V.

What package does the ATMEGA324A-AU come in?

It is available in a 44-TQFP (10x10 mm) surface-mount package.

What is the operating temperature range?

The device operates from -40°C to +85°C (TA).

Is the ATMEGA324A-AU RoHS compliant?

It is marked as RoHS3 compliant, but this is unverified and should be confirmed with official documentation.

How much Flash memory does the ATMEGA324A-AU have?

It has 32KB of Flash program memory (16K x 16).

What communication interfaces are supported?

It supports I²C, SPI, and UART/USART connectivity.

Does the ATMEGA324A-AU have an analog-to-digital converter?

Yes, it includes an 8-channel, 10-bit ADC.

ATMEGA324A-AU Alternate Parts

Same form/fit/function or matching attribute configuration across different manufacturers.
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