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ATmega1284P-AU

Updated: 2026-07-20

Overview

The ATmega1284P-AU is a member of Microchip's AVR microcontroller family, designed for high-performance embedded applications. It combines a powerful 8-bit AVR RISC core with extensive memory and peripheral options, making it suitable for complex control tasks. With 128KB of Flash memory for program storage and 16KB of SRAM for data handling, this MCU supports demanding applications. Its 4KB EEPROM provides non-volatile storage for critical data, ensuring reliability in industrial environments.

Structure and Working Principle

ATMEGA1284P-AU 8位MCU单片机 MICROCHIP/微芯深圳市龙宏电子科技有限公司

The ATmega1284P-AU integrates a Harvard architecture CPU with 32 general-purpose registers, enabling efficient instruction execution. It operates at clock speeds up to 20MHz, delivering 20 MIPS throughput. The microcontroller includes multiple communication interfaces (USART, SPI, I2C) for connectivity, along with analog comparators, PWM channels, and timers for precise control. Its low-power sleep modes enhance energy efficiency in battery-operated devices.

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Key Features

Key features of the ATmega1284P-AU include its 128KB Flash memory with in-system programming (ISP) capability, allowing firmware updates without removing the chip. The 16KB SRAM supports data-intensive tasks, while 4KB EEPROM ensures parameter retention. Peripheral highlights include 32 I/O pins with interrupt capability, eight 10-bit ADC channels, and six PWM channels. The device also features a built-in watchdog timer and brown-out detection for enhanced system reliability.

Application Areas

This microcontroller is widely used in industrial automation for process control, motor control, and sensor interfacing. Its robust features make it ideal for IoT edge devices, smart home systems, and wearable electronics. Other common applications include automotive control systems, medical devices, and consumer electronics. The combination of performance and low power consumption enables deployment in both mains-powered and battery-operated scenarios.

Maintenance and Precautions

ATMEGA1284P-AU 8位MCU单片机 44-TQFP, 44-VQFP 工作频率深圳市新思汇科技有限公司

When working with the ATmega1284P-AU, proper ESD precautions are essential. Always use grounded workstations and wrist straps when handling the IC. The device operates within a 1.8-5.5V range, so ensure stable power supply voltage. For programming, follow Microchip's recommended procedures for ISP or JTAG interfaces. Thermal considerations are generally minimal due to the low-power design, but adequate ventilation should be maintained in high-density PCB layouts.

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B2B Procurement Guide

When procuring ATmega1284P-AU microcontrollers in bulk, verify the supplier's authorization status with Microchip to ensure genuine components. Consider lead times, as semiconductor shortages may affect availability. Evaluate total cost of ownership including development tools and programming adapters. For prototype quantities, consider purchasing from authorized distributors with technical support capabilities. Volume discounts typically apply for orders exceeding 1,000 units.

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