ATMEGA644A-AU

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ATMEGA644A-AU

IC MCU 8BIT 64KB FLASH 44TQFP

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Thông số kỹ thuật

Package Tray
Series AVR® ATmega
ProductStatus Active
CoreProcessor AVR
CoreSize 8-Bit
Speed 20MHz
Connectivity I²C, SPI, UART/USART
Peripherals Brown-out Detect/Reset, POR, PWM, WDT
NumberofI/O 32
ProgramMemorySize 64KB (32K x 16)
ProgramMemoryType FLASH
EEPROMSize 2K x 8
RAMSize 4K x 8
Voltage-Supply(Vcc/Vdd) 1.8V ~ 5.5V
DataConverters A/D 8x10b
OscillatorType Internal
OperatingTemperature -40°C ~ 85°C (TA)
MountingType Surface Mount
Package/Case 44-TQFP

Tổng quan

Description

The ATmega644A-AU is a microcontroller from Atmel's AVR family, designed for a variety of embedded applications. It features an 8-bit AVR architecture, offering 64KB of Flash memory, 4KB of SRAM, and 2KB of EEPROM, making it suitable for complex tasks. The device operates at a maximum clock speed of 20 MHz and supports various communication interfaces, including USART, SPI, and I2C.
Its GPIO capabilities include 32 programmable I/O pins, allowing for extensive interfacing with other components. The ATmega644A-AU also includes advanced features like a 10-bit ADC, timers, and PWM, enabling precise control and measurement in applications such as robotics, automation, and sensor monitoring.
The microcontroller is available in a 32-pin TQFP package, facilitating easy integration into compact designs. Due to its cost-effectiveness and versatility, the ATmega644A-AU is widely used in hobbyist projects and professional designs alike, making it an excellent choice for engineers and developers.

Features

The ATmega644A-AU is a low-power 8-bit microcontroller from Atmel (now part of Microchip Technology) based on the AVR architecture. Key features include:
- Flash Memory: 64 KB for program storage.
- SRAM: 4 KB for data storage.
- EEPROM: 2 KB for non-volatile data storage.
- Clock Speed: Operates at up to 20 MHz.
- I/O Ports: 32 general-purpose I/O pins.
- Timer/Counters: Three 8-bit and one 16-bit timer/counter for PWM and timing applications.
- ADC: 10-bit Analog-to-Digital Converter with up to 8 channels.
- USART: Two Universal Synchronous and Asynchronous serial receiver/transmitters for serial communication.
- SPI/I2C: Supports Serial Peripheral Interface and I2C communication protocols.
- Watchdog Timer: Provides system reset capability to enhance reliability.
- Power Saving Modes: Multiple sleep modes for energy efficiency.
- Package: Available in 32-pin TQFP and other form factors.
This microcontroller is widely used in embedded systems, robotics, and hobbyist projects due to its versatility and performance.

Package

The ATmega644A-AU is packaged in a TQFP (Thin Quad Flat Package) type, specifically a 32-pin TQFP with a 7x7 mm footprint.

Pinout

The ATmega644A-AU is a microcontroller from Atmel (now part of Microchip Technology) that features a 40-pin Dual In-line Package (DIP) configuration. It has the following key pin functions:
1. I/O Ports: 32 general-purpose I/O pins (divided into ports B, C, and D).
2. Analog Inputs: 8 channels of 10-bit ADC (Analog-to-Digital Converter).
3. Timer/Counters: Three timer/counters (1 x 16-bit and 2 x 8-bit).
4. Communication Interfaces: USART for serial communication and SPI/I2C interfaces.
5. Reset: A dedicated reset pin for initializing the microcontroller.
6. Power Supply: VCC and GND pins for power supply connections.
7. External Interrupts: External interrupt capability on specific pins.
The ATmega644A-AU operates at a voltage range of 2.7V to 5.5V and can achieve a maximum clock frequency of 20 MHz. Its diverse functionalities make it suitable for various embedded applications.

Manufacturer

The ATMEGA644A-AU is manufactured by Microchip Technology Inc., an American company that specializes in microcontroller, mixed-signal, analog, and Flash-IP solutions. Founded in 1989, Microchip is known for its development of integrated circuits, particularly their 8-bit, 16-bit, and 32-bit microcontrollers. The company serves various industries, including automotive, consumer electronics, industrial automation, and communications. Microchip Technology is recognized for its innovative products, extensive development tools, and strong customer support, enabling engineers to create efficient and cost-effective embedded systems.

Application

The ATmega644A-AU microcontroller is widely used in various applications, including embedded systems, robotics, home automation, and sensor interfacing. Its versatility makes it suitable for IoT devices, industrial control systems, and educational projects. Additionally, it can be employed in data logging, motor control, and consumer electronics due to its rich set of peripherals and support for multiple communication protocols like SPI, I2C, and UART.

Equivalent

Equivalent products to the ATmega644A-AU include the ATmega644P-AU, ATmega1284P-AU, and ATmega1284-AU. These chips share similar architecture and features, such as AVR architecture, 8-bit processing, and comparable I/O capabilities. Check specific datasheets for detailed differences in memory, peripheral support, and power requirements.

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