The ATMEGA328PB-AU is an 8-bit AVR microcontroller from Microchip's ATmega328 series, designed for embedded control, automation, robotics, sensor interfaces, and general-purpose electronic applications. It combines programmable Flash memory, SRAM, EEPROM, digital I/O, analog inputs, timers, and communication peripherals in a compact surface-mount package.
The ATmega328PB provides a familiar AVR architecture and is suitable for applications requiring reliable processing and multiple hardware peripherals. Its integrated timers, ADC, serial communication interfaces, and GPIO make it useful for controlling sensors, displays, motors, LEDs, switches, and other electronic devices.
The ATMEGA328PB-AU is suitable for DIY electronics, robotics, Arduino-based development, automation systems, educational projects, IoT devices, and custom embedded products. It can be programmed using compatible AVR development and programming tools and is suitable for custom PCB designs where a standalone microcontroller is preferred.
The "-AU" designation identifies a specific surface-mount package variant of the ATmega328PB. The device provides expanded peripheral capabilities compared with earlier ATmega328-family variants, making it useful for projects requiring additional communication and control resources.

Key Features

ATMEGA328PB 8-Bit AVR Microcontroller
ATmega328 Series
AVR RISC Architecture
32KB Flash Program Memory
2KB SRAM
1KB EEPROM
32 Programmable I/O Lines
10-Bit ADC
Multiple Analog Input Channels
Integrated Timers and Counters
PWM Output Support
USART Communication
SPI Interface
I2C / TWI Interface
Two USART Interfaces
Two SPI Interfaces
Two I2C / TWI Interfaces
Suitable for Arduino-Based Projects
Suitable for Robotics Projects
Suitable for Sensor Applications
Suitable for Automation Systems
Suitable for IoT Projects
Suitable for Embedded Electronics
Suitable for Educational Projects
Suitable for Custom PCB Designs
Low-Power Operating Modes
Compact Surface-Mount Package