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Product attributes Property Value
Manufacturer Microchip Technology
Product Series AVR® ATmega
Packaging Tray | NULL
Core Processor AVR
Core Size 8-Bit
Speed 20MHz
Connectivity SPI, UART/USART, USI
Peripherals Brown-out Detect/Reset, POR, PWM, WDT
Number of I/O 54
Program Memory Size 32KB (16K x 16)
Program Memory Type FLASH
EEPROM Size 1K x 8
RAM Size 2K x 8
Voltage - Supply (Vcc/Vdd) 1.8V ~ 5.5V
Data Converters A/D 8x10b
Oscillator Type Internal
Operating Temperature -40°C ~ 85°C (TA)
Grade -
Qualification AEC -
Mounting Type Surface Mount
Supplier Device Package 64-TQFP (14x14)
Package / Case 64-TQFP
ROHS RoHS Compliant - Hazardous Substance Free Electronic Components | HQICKEY

The ATMEGA325A-AU from Microchip is an 8-bit AVR microcontroller offering 32KB of flash memory and 2KB of RAM. Operating at up to 20MHz, it supports a wide supply voltage range of 1.8V to 5.5V. Its 64-TQFP package and integrated peripherals like PWM and WDT make it a versatile choice for cost-sensitive embedded applications.

  • Wide operating voltage (1.8V-5.5V): Simplifies power supply design and supports both 3.3V and 5V systems.
  • High-speed AVR core (20MHz): Provides fast processing for real-time control tasks.
  • Rich peripheral set: Includes PWM, WDT, and Brown-out Detect/Reset for robust system design.
  • Mature ecosystem: Supported by Microchip's extensive development tools and libraries.

Embedded Display Controller

With 32KB flash and a 64-TQFP package, it can drive character or graphic LCDs in industrial panels.

Automotive Sensor Interface

Its wide voltage range (1.8V-5.5V) and 20MHz speed allow it to interface with various automotive sensors.

Home Appliance Control

The integrated PWM and WDT make it suitable for controlling motors and ensuring safe operation in washing machines or microwaves.

Data Acquisition System

With 2KB RAM, it can buffer data from multiple analog sensors for processing or transmission.

Security System

Its low power consumption and Brown-out Detect/Reset features ensure reliable operation in alarm panels.

Portable Instrumentation

The 1.8V operation allows for battery-powered designs, while the 20MHz speed handles real-time calculations.

Q: What is the core architecture of the ATMEGA325A-AU?
A: It uses the 8-bit AVR core.
Q: What is the maximum speed?
A: It operates at up to 20MHz.
Q: How much program memory does it have?
A: It has 32KB of flash memory.
Q: What is the supply voltage range?
A: It operates from 1.8V to 5.5V.
Q: What package is it available in?
A: It comes in a 64-TQFP package.
Base Product Number : ATMEGA325A
20MHz 2KB RAM 32KB Flash 64-TQFP 8-bit MCU ATMEGA325A AVR Industrial Microchip
Q: What is the core architecture of the ATMEGA325A-AU?
A: It uses the 8-bit AVR core.
Q: What is the maximum speed?
A: It operates at up to 20MHz.
Q: How much program memory does it have?
A: It has 32KB of flash memory.
Q: What is the supply voltage range?
A: It operates from 1.8V to 5.5V.
Q: What package is it available in?
A: It comes in a 64-TQFP package.