ATMEGA644P-20AU

Name: ATMEGA644P-20AU
Brand: Microchip Technology
Rating: 4.5 (10 reviews)
Author: Lisleapex

8-bit Microcontrollers - MCU AVR 64K FLSH 4K SRAM 2KB EE 20MHZ 5V

4,243 Effective Inventory

ATMEGA644P-20AU

Effective Inventory4,243

8-bit Microcontrollers - MCU AVR 64K FLSH 4K SRAM 2KB EE 20MHZ 5V

Manufacturer Part # : ATMEGA644P-20AU
Package/Case: TQFP-44
Brand: Microchip Technology
Product Categories : Microcontrollers
Series : ATMEGA644

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We have successfully obtained various certification standards and have established our own professional testing laboratory. This ensures that every product we supply to our customers meets the highest quality standards. We adhere to strict testing protocols to maintain the consistency and accuracy of our products. To ensure that our products are original and genuine, we also collaborate with reputable third-party testing facilities to conduct rigorous quality testing. Our commitment to quality extends to meeting industry, legal, regulatory, and ISO 9001:2015 requirements.

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Initiate the application within 90 days from the shipment date.

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ATMEGA644P-20AU DataSheet

Current price plan is under preparation. Please contact our customer service team for the latest pricing information. Thank you for your understanding and support!

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ATMEGA644P-20AU Details

The ATMEGA644P-20AU is an 8-bit microcontroller from Microchip, designed for industrial automation, home automation, robotics, automotive, and consumer electronics applications. This device features a 64KB Flash memory, 4KB SRAM, 2KB EEPROM, 32 general-purpose I/O pins, 8-channel 10-bit ADC, 2 USARTs, SPI, TWI, and JTAG interfaces, a 16-bit Timer/Counter with PWM, and a programmable watchdog timer. It operates at 20 MHz and has low power consumption options.

Key Features

64KB Flash Memory: Provides ample storage for program and data.
4KB SRAM: Offers sufficient memory for temporary data storage.
2KB EEPROM: Enables non-volatile data storage.
32 General-Purpose I/O Pins: Provides flexibility for connecting various peripherals and sensors.
8-Channel 10-Bit ADC: Supports analog-to-digital conversion for sensor readings.
2 USARTs, SPI, TWI, and JTAG Interfaces: Enables communication with other devices and programming.
16-Bit Timer/Counter with PWM: Offers precise timing and pulse-width modulation control.
Programmable Watchdog Timer: Ensures system reliability by resetting the device in case of a fault.

Applications

Industrial Automation: Suitable for controlling machinery and equipment.
Home Automation: Enables smart home devices and automation.
Robotics: Supports robotic systems and autonomous control.
Automotive: Offers reliable performance in automotive applications.
Consumer Electronics: Suitable for various consumer electronics devices.

Where to Use

The ATMEGA644P-20AU is suitable for use in a wide range of applications, including industrial control systems, home automation devices, robotics, automotive systems, and consumer electronics products.

How to Use

To use the ATMEGA644P-20AU, refer to the datasheet for detailed information on programming, communication protocols, and interface connections. The device can be programmed using various development tools and software frameworks.

Application Circuit

The application circuit diagram for the ATMEGA644P-20AU illustrates how to connect the microcontroller to various peripherals and interfaces, enabling its use in a wide range of applications.

(Tip: For detailed circuit diagram connections and usage guide, refer to the datasheet.)

Complementary

The ATMEGA644P-20AU can be complemented by other Microchip microcontrollers, such as the ATmega1284P or ATmega2560, which offer additional features and capabilities for more demanding applications.

When selecting complementary devices, ensure that their features and specifications align with your specific application requirements for optimal performance and compatibility.

Frequently Asked Questions

Q: What is the maximum clock speed supported by the ATMEGA644P-20AU?

A: The ATMEGA644P-20AU operates at a maximum clock speed of 20 MHz. For more details, refer to the datasheet for specific operating conditions and limitations.

Q: Can the ATMEGA644P-20AU be used in automotive applications?

A: Yes, the ATMEGA644P-20AU is suitable for use in automotive applications, offering reliable performance and low power consumption options.

Specifications

The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.

Program Memory Size (KB)	64	RAM (bytes)	4096
Data EEPROM (bytes)	2048	Pin Count !	44
Operation Voltage Max.(V)	5.5	Operation Voltage Min.(V)	1.8
Timers	2 x 8-bit - 1 x 16-bit	Max ADC Resolution (bits)	10
ADC Channels	8	Zero Cross Detect	No
Number of Comparators	1	SPI	3 -SPI
I2C	1 -I2C	Stand alone PWM	6
Low Power	Yes	Numerically Controlled Oscillator (NCO)	0
Data Signal Modulator (DSM)	0

Datasheet PDF

Datasheets record the features, absolute maximum ratings, applications and more of the device, which benefit a lot as an overall guide to the specific application of the part.

Preliminary Specification ATMEGA644P-20AU PDF Download

FAQs

What is ATMEGA644P-20AU?

The ATMEGA644P-20AU is a high-performance, low-power 8-bit microcontroller designed by Microchip Technology (formerly Atmel). It is part of the Atmel AVR family and is ideal for a wide range of applications including industrial control systems, consumer electronics, and automotive control systems.

How Does ATMEGA644P-20AU Work?

The ATMEGA644P-20AU works as a versatile 8-bit microcontroller with a high level of integration. It features a rich set of peripherals including analog-to-digital converters, serial communication interfaces, and timers. The microcontroller executes instructions from its program memory and interacts with external peripherals to perform various tasks in the target application.

How Many Pins does ATMEGA644P-20AU have and What are the Functions of the Pinout Configuration?

The ATMEGA644P-20AU comes in a 44-pin TQFP (Thin Quad Flat Package) package. The pinout configuration includes:

VCC, GND: Power supply and ground pins, respectively.
PORTx: General-purpose I/O pins for external interfacing.
ADCx: Analog-to-digital converter input pins.
TIMx: Timer/Counter control pins.
INTx: External interrupt input pins.
TWI, SPI, USART: Serial communication interface pins.
RESET: Reset input pin.
XTAL1, XTAL2: Crystal oscillator input and output pins for clock generation.

What are the Pros and Cons of ATMEGA644P-20AU?

Pros:

High Performance: Offers high computing power for embedded system applications.
Rich Peripheral Set: Includes a variety of peripherals for versatile system integration.
Low Power Consumption: Operates at low power for energy-efficient designs.
Industry-standard Architecture: Based on the widely-used AVR architecture, providing a rich ecosystem of development tools and resources.

Cons:

Bit-width Limitation: Limited to 8-bit computing, may not be suitable for applications requiring higher computational precision.
Cost: Higher cost compared to lower-end microcontrollers with fewer features.
Complexity: Requires understanding of microcontroller architecture and peripherals for effective utilization.

Are There Any Equivalents/Alternatives to ATMEGA644P-20AU for Recommendation?

The ATMEGA1284P-PU from Microchip Technology is a higher-end alternative with increased flash memory and pins.
Alternatives to the ATMEGA644P-20AU include the PIC18F4620 from Microchip Technology and the STM32F103C8T6 from STMicroelectronics.