Microchip Technology ATMEGA324A-MUR

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Product attributes Property Value
Manufacturer Microchip Technology
Product Series AVR® ATmega
Packaging Cut Tape (CT) | NULL
Core Processor AVR
Core Size 8-Bit
Speed 20MHz
Connectivity I2C, SPI, UART/USART
Peripherals Brown-out Detect/Reset, POR, PWM, WDT
Number of I/O 32
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 44-VQFN (7x7)
Package / Case 44-VFQFN Exposed Pad
ROHS RoHS Compliant - Hazardous Substance Free Electronic Components | HQICKEY

The ATMEGA324A-MUR is an 8-bit AVR microcontroller from Microchip. It operates at up to 20MHz with 32KB flash and 2KB SRAM. Supporting 1.8V to 5.5V, it includes PWM, brown-out detection, and watchdog timer. The 44-VFQFN package with exposed pad is suitable for compact, thermally efficient designs.

  • Wide voltage range (1.8-5.5V) – simplifies power supply design.
  • High-speed AVR core (20MHz) – fast execution for 8-bit applications.
  • Integrated brown-out detection – prevents data corruption during power dips.
  • Exposed pad package – improves heat dissipation for reliable operation.

8-bit Embedded Control

AVR core at 20MHz provides deterministic performance for simple control loops.

Battery-Powered Devices

1.8V operation and low-power modes extend battery life in remote sensors.

Automotive Aftermarket

Wide voltage range (up to 5.5V) tolerates vehicle voltage fluctuations.

Home Appliances

Robust WDT and brown-out reset ensure reliable operation in noisy environments.

Educational Kits

Simple architecture and 32KB flash make it ideal for learning embedded systems.

Industrial Monitoring

Exposed pad package aids thermal dissipation in continuous operation.

Q: What is the maximum clock speed?
A: 20MHz.
Q: What is the supply voltage range?
A: 1.8V to 5.5V, making it flexible for various power supplies.
Q: What is the package type?
A: 44-pin VFQFN with exposed pad.
Q: Does it have PWM?
A: Yes, it includes PWM, POR, WDT, and brown-out detection.
Base Product Number : ATMEGA324A
20MHz 2KB SRAM 32KB Flash 44-VFQFN 8-bit MCU ATMEGA324A AVR brown-out education industrial low power PWM
Q: What is the maximum clock speed?
A: 20MHz.
Q: What is the supply voltage range?
A: 1.8V to 5.5V, making it flexible for various power supplies.
Q: What is the package type?
A: 44-pin VFQFN with exposed pad.
Q: Does it have PWM?
A: Yes, it includes PWM, POR, WDT, and brown-out detection.