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ATMEGA324PA-AU

MCHPATMEGA324PA-AU

Microchip Technology
AVR AVR® ATmega Microcontroller IC 8-Bit 20MHz 32KB (16K x 16) FLASH 44-TQFP (10x10)
NRND5,379 in stock
Datasheet Digi-Key Mouser Compare Prices

Overview

The ATMEGA324PA-AU is a high-performance, low-power 8-bit AVR RISC-based microcontroller featuring 32KB of ISP Flash memory and 2KB of SRAM. Operating at up to 20MHz, it provides a versatile set of peripherals including dual USARTs, a 10-bit ADC, and specialized support for capacitive touch sensing via the QTouch library.

Why Choose This Part

This MCU offers a balance of 32KB Flash and 1KB EEPROM for robust data logging in a compact 44-TQFP package. It features a hardware multiplier for faster arithmetic operations and 32 general-purpose working registers to improve execution efficiency over traditional 8-bit architectures.

Applications

Industrial Sensor Nodes
Utilizing the 8-channel 10-bit ADC and low-power sleep modes for remote monitoring applications.
Capacitive Touch Interfaces
Implementing buttons, sliders, and wheels using the integrated QTouch library support.
Home Automation Controllers
Managing local logic and communication via I2C, SPI, and dual UART interfaces in smart devices.
Handheld Battery-Powered Devices
Leveraging PicoPower technology to minimize power consumption in active and sleep modes.

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 32
Core Processor AVR
Package / Case 44-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 44-TQFP (10x10)
Voltage - Supply (Vcc/Vdd) 1.8V ~ 5.5V

Getting Started

Engineers can develop for this part using Microchip Studio or the AVR-GCC toolchain with an AVR-ISP MKII or MPLAB PICkit 4 programmer. For hardware evaluation, the part is compatible with the STK600 starter kit or custom PCBs designed for the 44-pin TQFP footprint.

Part of ATmega family » ATMEGA324PA

ATMEGA324PA Family

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

Part Number Package Stock
ATMEGA324PA-AU (this part) TQFP-44 5,379
ATMEGA324PA-MUR VFQFN-44 8,765

Also Consider

ATMEGA324PB-AU MCHPMicrochip Technology - An updated version of the 324PA featuring additional timers and a second SPI port.
ATMEGA644PA-AU MCHPMicrochip Technology - Pin-compatible alternative offering double the Flash (64KB) and SRAM (4KB) for larger codebases.
ATMEGA328P-AU MCHPMicrochip Technology - A smaller 32-pin alternative with similar memory capacity for designs requiring less I/O.

Categories

Microcontrollers > AVR Microcontrollers > Microchip