Parts Microcontrollers Microchip ATmega328 MCU Family ATMEGA328PB ATMEGA328PB-AUR

MCHPATMEGA328PB-AUR

Name: ATMEGA328PB-AUR
Brand: Microchip Technology

Microchip Technology

8-bit Microcontrollers - MCU ATMEGA328PB IND TEMP T&R

9,665 in stock

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Overview

The ATMEGA328PB-AUR is an enhanced 8-bit AVR RISC-based microcontroller featuring 32KB of flash, 2KB of RAM, and 1024 bytes of EEPROM. It improves upon the classic ATmega328P by adding a Peripheral Touch Controller (PTC) and additional communication interfaces, operating at up to 20MHz.

Why Choose This Part

This variant offers a significant upgrade over standard 328P models by integrating dedicated hardware for capacitive touch and additional serial peripherals. The 20MHz clock speed and 131 instructions, most of which execute in a single cycle, ensure responsive performance for 8-bit tasks.

Applications

Capacitive Touch Interfaces

Utilizes the integrated Peripheral Touch Controller (PTC) to implement buttons, sliders, and wheels without external active components.

Battery-Powered Sensors

Leverages low-power modes including Power-down (0.2uA) and Power-save (1.3uA) to extend operating life in remote sensing applications.

Industrial Controllers

Provides 27 I/O pins and a 2-cycle multiplier for efficient control logic and signal processing in harsh environments.

Key Specifications

Speed 20MHz

RAM Size 2K x 8

Core Size 8-Bit

EEPROM Size 1K x 8

Peripherals Brown-out Detect/Reset, POR, PWM, WDT

Connectivity I2C, SPI, UART/USART

Mounting Type Surface Mount

Number of I/O 27

Core Processor AVR

Package / Case 32-TQFP

Data Converters A/D 8x10b

Oscillator Type Internal

Program Memory Size 32KB (16K x 16)

Program Memory Type FLASH

Operating Temperature -40degC ~ 85degC (TA)

Supplier Device Package 32-TQFP (7x7)

Voltage - Supply (Vcc/Vdd) 1.8V ~ 5.5V

Getting Started

Development is best supported by the Microchip Studio IDE and the XC8 compiler. Engineers can use the Atmel-ICE for hardware debugging or prototype quickly using the ATMEGA328PB-XMINI evaluation kit.

Part of ATmega328 MCU family » ATMEGA328PB

ATMEGA328PB Family

Comparing specs that differ across variants. The current part is highlighted.

Part Number	Package	Temp Range	Stock
ATMEGA328PB-AUR (this part)	TQFP-32	-40degC ~ 85degC (..	9,665
ATMEGA328PB-MU	VFQFN-32	-40degC ~ 85degC (..	17,627
ATMEGA328PB-MNR	VFQFN-32	-40degC ~ 105degC ..	21,596
ATMEGA328PB-ANR	TQFP-32	-40degC ~ 105degC ..	5,689
ATMEGA328PB-AU	TQFP-32	-40degC ~ 85degC (..	17,365

Also Consider

ATMEGA328P-AU MCHPMicrochip Technology - The industry-standard predecessor with broader community libraries but fewer serial interfaces and no hardware touch controller.

ATSAMD21G18A-AUT MCHPMicrochip Technology - A 32-bit ARM Cortex-M0+ alternative for applications requiring more RAM and higher computational performance.

ATTINY1616-MNR MCHPMicrochip Technology - A smaller, modern tinyAVR 1-series part that also includes the Peripheral Touch Controller for space-constrained designs.