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Product attributes Property Value
Manufacturer Microchip Technology
Product Series AVR® ATmega
Packaging Cut Tape (CT) | Tape & Reel (TR)
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 23
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 32-VQFN (5x5)
Package / Case 32-VFQFN Exposed Pad
ROHS RoHS Compliant - Hazardous Substance Free Electronic Components | HQICKEY

The ATMEGA328-MUR is a high-performance 8-bit AVR microcontroller from Microchip, offering 32KB flash and 2KB SRAM. It operates at up to 20MHz with a supply range of 1.8V to 5.5V. Housed in a compact 32-VFQFN package, it includes PWM, brown-out detection, and WDT, making it a versatile choice for IoT and embedded projects.

  • 1.8V operation enables energy-efficient battery designs.
  • 32KB flash supports complex firmware and bootloaders.
  • Compact QFN package ideal for space-constrained PCBs.
  • Industry-standard AVR architecture with huge ecosystem.

IoT Edge Nodes

32KB flash and 2KB RAM support MQTT stacks for sensor data aggregation in smart agriculture.

3D Printer Controllers

20MHz AVR core with PWM drives stepper motors precisely in open-source firmware.

Wearable Health Monitors

1.8V operation enables single-cell battery designs for heart-rate wristbands.

Robotics

Rich peripheral set (PWM, WDT, brown-out) handles servo control and obstacle avoidance.

Home Automation Hubs

32-VFQFN package saves board space in smart speaker and hub designs.

Data Loggers

Low-power sleep modes with WDT wake-up extend field deployment time.

Q: What is the core?
A: AVR.
Q: What is the max speed?
A: 20MHz.
Q: How much flash?
A: 32KB.
Q: What is the RAM?
A: 2KB.
Q: What package?
A: 32-VFQFN.
Base Product Number : ATMEGA328
20MHz 32-VFQFN 32KB flash 8-bit MCU AVR IoT low power robotics wearable
Q: What is the core?
A: AVR.
Q: What is the max speed?
A: 20MHz.
Q: How much flash?
A: 32KB.
Q: What is the RAM?
A: 2KB.
Q: What package?
A: 32-VFQFN.