Microchip Technology ATMEGA328PB-MN

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Product attributes Property Value
Manufacturer Microchip Technology
Product Series AVR® ATmega, Functional Safety (FuSa)
Packaging Tray |
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 27
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 32-VFQFN (5x5)
Package / Case 32-VFQFN Exposed Pad
ROHS RoHS Compliant - Hazardous Substance Free Electronic Components | HQICKEY

The Microchip ATMEGA328PB-MN is a high-performance 8-bit AVR microcontroller with 32KB flash and 2KB SRAM. Operating from 1.8V to 5.5V at up to 20MHz, it integrates brown-out detection, power-on reset, PWM, and watchdog timer. The compact 32-VFQFN package suits space-constrained embedded designs.

  • Ultra-low power consumption: 1.8V operation extends battery life in portable devices.
  • High integration: Built-in POR, BOD, and WDT reduce external component count.
  • Wide temperature range: -40°C to 105°C supports industrial environments.
  • Compact QFN package: Saves PCB area for miniaturized products.

IoT Sensor Nodes

Low 1.8V operation and multiple sleep modes enable long battery life for wireless environmental monitoring.

Motor Control

On-chip PWM channels and 20MHz AVR core provide precise timing for brushless DC motor drivers.

Industrial Automation

Wide temperature range (-40°C to 105°C) and brown-out detection ensure reliable operation in harsh factory floors.

Portable Medical Devices

Low power consumption and small QFN package fit compact glucose meters or pulse oximeters.

Smart Home Controllers

Rich GPIO and serial interfaces (UART/SPI/I2C) allow integration with Zigbee or BLE modules for lighting and HVAC control.

Automotive Aftermarket

Robust POR and WDT protect firmware integrity in car alarm or telematics add-on modules.

Q: What is the operating voltage range?
A: 1.8V to 5.5V, suitable for battery and 3.3V/5V systems.
Q: What is the maximum clock speed?
A: 20MHz at 4.5V-5.5V.
Q: How much flash and SRAM does it have?
A: 32KB flash and 2KB SRAM.
Q: What package is available?
A: 32-VFQFN exposed pad.
Q: Does it include a watchdog timer?
A: Yes, WDT is integrated.
Base Product Number : ATMEGA328PB
20MHz 2KB SRAM 32KB Flash 8-bit MCU ATMEGA328PB AVR industrial IoT low power motor control QFN-32
Q: What is the operating voltage range?
A: 1.8V to 5.5V, suitable for battery and 3.3V/5V systems.
Q: What is the maximum clock speed?
A: 20MHz at 4.5V-5.5V.
Q: How much flash and SRAM does it have?
A: 32KB flash and 2KB SRAM.
Q: What package is available?
A: 32-VFQFN exposed pad.
Q: Does it include a watchdog timer?
A: Yes, WDT is integrated.