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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 ~ 105°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 Microchip ATMEGA325A-AN is a high-performance 8-bit AVR microcontroller with 32KB of flash memory and 2KB of SRAM. It operates at up to 20MHz and supports a wide supply voltage range from 1.8V to 5.5V, providing flexibility for various power designs. The device includes essential features such as Brown-out Detect/Reset, POR, PWM, and WDT, ensuring stable operation in demanding conditions. Packaged in a 64-TQFP, it is suitable for automotive, industrial, and consumer applications that require reliable processing in a compact footprint.

  • Wide voltage range (1.8V-5.5V): Compatible with 2V, 3.3V, and 5V logic systems.
  • High temperature tolerance (105°C): Suitable for automotive and industrial environments.
  • 20MHz performance: Fast processing for real-time control tasks.
  • Integrated safety features (BOD, WDT): Enhances system reliability without external components.

Automotive Body Electronics

The 105°C operating temperature and 5.5V tolerance make it ideal for engine bay sensors and body control modules.

Industrial Automation Sensors

With 20MHz speed and 32KB flash, it can process analog signals and drive actuators in factory floor equipment.

Consumer Appliances

Its low-voltage operation (1.8V) and PWM outputs enable efficient control of motors and displays in smart home devices.

Portable Data Loggers

The low power consumption and wide voltage range allow long-term field data collection with battery backup.

HVAC Controllers

Robust brown-out detection and WDT ensure reliable operation in temperature cycling environments.

Security Systems

With multiple timers and I/O, it can manage keypads, sensors, and alarm outputs in access control panels.

Q: What is the maximum clock speed of the ATMEGA325A-AN?
A: It runs at up to 20MHz with a supply voltage from 1.8V to 5.5V.
Q: What package is this AVR MCU available in?
A: It comes in a 64-TQFP package, suitable for surface-mount assembly.
Q: How much flash and SRAM does it have?
A: It offers 32KB of flash (16K x 16) and 2K x 8 of SRAM.
Q: What temperature range does it support?
A: It operates from -40°C to 105°C, making it suitable for harsh environments.
Q: What key features are integrated?
A: It includes Brown-out Detect/Reset, POR, PWM, and WDT for robust operation.
Base Product Number : ATMEGA325A
20MHz 32KB Flash 64-TQFP 8-bit MCU Automotive AVR Industrial Microchip PWM WDT
Q: What is the maximum clock speed of the ATMEGA325A-AN?
A: It runs at up to 20MHz with a supply voltage from 1.8V to 5.5V.
Q: What package is this AVR MCU available in?
A: It comes in a 64-TQFP package, suitable for surface-mount assembly.
Q: How much flash and SRAM does it have?
A: It offers 32KB of flash (16K x 16) and 2K x 8 of SRAM.
Q: What temperature range does it support?
A: It operates from -40°C to 105°C, making it suitable for harsh environments.
Q: What key features are integrated?
A: It includes Brown-out Detect/Reset, POR, PWM, and WDT for robust operation.