規格
| 屬性 | 價值 |
| 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) | 2.7V ~ 5.5V |
| DataConverters | A/D 8x10b |
| OscillatorType | Internal |
| OperatingTemperature | -40°C ~ 85°C (TA) |
| MountingType | Surface Mount |
| Package/Case | 44-TQFP |
概述
Description
The ATMEGA644P-20AU is an 8-bit microcontroller from Microchip Technology, part of the AVR family. It features a 20 MHz processing speed and is built on the AVR enhanced RISC architecture, which allows it to execute powerful instructions in a single clock cycle, resulting in a throughput of up to 20 MIPS. This microcontroller comes with 64KB of in-system programmable flash memory, 4KB of SRAM, and 2KB of EEPROM.
Key peripherals include 32 general-purpose I/O lines, three 8-bit timers, one 16-bit timer, and a 10-bit ADC with up to 8 channels. It also has SPI, USART, and I2C communication interfaces, along with a JTAG interface for on-chip debugging. The ATMEGA644P-20AU supports advanced power-saving options with five sleep modes, making it suitable for battery-operated applications.
Packaged typically in a 44-pin TQFP, this microcontroller is widely used in embedded systems, consumer electronics, and industrial automation due to its flexibility, performance, and ease of use in programming and interfacing.
Key peripherals include 32 general-purpose I/O lines, three 8-bit timers, one 16-bit timer, and a 10-bit ADC with up to 8 channels. It also has SPI, USART, and I2C communication interfaces, along with a JTAG interface for on-chip debugging. The ATMEGA644P-20AU supports advanced power-saving options with five sleep modes, making it suitable for battery-operated applications.
Packaged typically in a 44-pin TQFP, this microcontroller is widely used in embedded systems, consumer electronics, and industrial automation due to its flexibility, performance, and ease of use in programming and interfacing.
Equivalent
Equivalent products to the ATMEGA644P-20AU microcontroller, which is an 8-bit AVR microcontroller, include:
1. ATMEGA1284P - Similar architecture with more memory.
2. ATMEGA32A - Lower memory capacity variant.
3. PIC18F4520 - Microchip's 8-bit PIC microcontroller.
4. ATMEGA324P - Lesser memory variant but similar features.
5. ATMEGA8515 - Similar with fewer peripherals and memory.
These alternatives vary in memory size and peripheral features, so selection depends on specific application needs.
1. ATMEGA1284P - Similar architecture with more memory.
2. ATMEGA32A - Lower memory capacity variant.
3. PIC18F4520 - Microchip's 8-bit PIC microcontroller.
4. ATMEGA324P - Lesser memory variant but similar features.
5. ATMEGA8515 - Similar with fewer peripherals and memory.
These alternatives vary in memory size and peripheral features, so selection depends on specific application needs.
Features
The ATMEGA644P-20AU is an 8-bit microcontroller from Microchip Technology featuring the AVR architecture. It offers a 20 MHz maximum CPU speed with 64 KB of in-system programmable Flash memory, 4 KB of SRAM, and 2 KB of EEPROM. The device supports up to 32 general-purpose I/O lines and includes peripherals such as USART, SPI, and I2C interfaces for communication.
It provides a versatile Timer/Counter setup, with two 8-bit and two 16-bit timers, along with PWM support. The microcontroller includes a 10-bit ADC with up to 8 multiplexed channels. It supports various power-saving modes such as Idle, Power-down, and Power-save, enhancing energy efficiency. The ATMEGA644P-20AU operates at a voltage range of 1.8V to 5.5V and is packaged in a TQFP-44 form factor. It has a JTAG interface for on-chip debugging and supports self-programming through a bootloader. With its rich set of features, it is well-suited for a wide range of embedded applications.
It provides a versatile Timer/Counter setup, with two 8-bit and two 16-bit timers, along with PWM support. The microcontroller includes a 10-bit ADC with up to 8 multiplexed channels. It supports various power-saving modes such as Idle, Power-down, and Power-save, enhancing energy efficiency. The ATMEGA644P-20AU operates at a voltage range of 1.8V to 5.5V and is packaged in a TQFP-44 form factor. It has a JTAG interface for on-chip debugging and supports self-programming through a bootloader. With its rich set of features, it is well-suited for a wide range of embedded applications.
Pinout
The ATmega644P-20AU is a microcontroller from the Atmel AVR family, housed in a 44-pin TQFP package. It features 44 pins that provide various functions including:
1. Ports: It has four general-purpose I/O ports (PORTA, PORTB, PORTC, and PORTD), each with 8 pins, allowing for a wide range of digital input and output capabilities.
2. Analog Inputs: It includes an ADC with 10-bit resolution, with up to 8 analog input channels.
3. Timers/Counters: The microcontroller includes three Timer/Counters, two 8-bit and one 16-bit, supporting features like PWM generation and capture/compare.
4. USART: It supports serial communication with two USART channels.
5. SPI and TWI (I2C): Provides SPI and TWI (I2C) interfaces for peripheral device communication.
6. Interrupts: It supports external and internal interrupts for responsive applications.
7. Oscillator Pins: Pins for connecting external clocks or crystals.
8. Power Supply and Ground: Dedicated VCC and GND pins for providing power to the microcontroller.
9. Programming and Debugging: ISP (In-System Programming) and JTAG interfaces for programming and debugging.
This configuration makes the ATmega644P-20AU suitable for a variety of applications in embedded systems.
1. Ports: It has four general-purpose I/O ports (PORTA, PORTB, PORTC, and PORTD), each with 8 pins, allowing for a wide range of digital input and output capabilities.
2. Analog Inputs: It includes an ADC with 10-bit resolution, with up to 8 analog input channels.
3. Timers/Counters: The microcontroller includes three Timer/Counters, two 8-bit and one 16-bit, supporting features like PWM generation and capture/compare.
4. USART: It supports serial communication with two USART channels.
5. SPI and TWI (I2C): Provides SPI and TWI (I2C) interfaces for peripheral device communication.
6. Interrupts: It supports external and internal interrupts for responsive applications.
7. Oscillator Pins: Pins for connecting external clocks or crystals.
8. Power Supply and Ground: Dedicated VCC and GND pins for providing power to the microcontroller.
9. Programming and Debugging: ISP (In-System Programming) and JTAG interfaces for programming and debugging.
This configuration makes the ATmega644P-20AU suitable for a variety of applications in embedded systems.
Manufacturer
The ATMEGA644P-20AU is manufactured by Microchip Technology Inc. Microchip is a leading provider of microcontroller, mixed-signal, analog, and Flash-IP solutions. It is a semiconductor company that designs and sells a wide range of electronic components used in embedded and control applications. The company provides solutions for numerous markets, including automotive, industrial, consumer, and aerospace, among others.
Application
The ATMEGA644P-20AU is a versatile microcontroller used in various applications. It is commonly employed in embedded systems, home automation, and consumer electronics due to its low power consumption and powerful processing capabilities. The microcontroller is ideal for industrial automation, robotics, and control systems due to its multiple I/O ports and communication interfaces. It's also used in data logging, sensor interfacing, and IoT devices thanks to its efficient processing and memory capacity. Additionally, the ATMEGA644P-20AU is suitable for educational purposes, allowing students and hobbyists to explore programming and electronics with a reliable platform. Its versatility makes it a popular choice across different fields requiring microcontroller solutions.
Package
The ATMEGA644P-20AU microcontroller is housed in a 44-pin TQFP (Thin Quad Flat Package) type. This package format is compact, facilitating easy integration onto PCBs, while also providing adequate pin access for interfacing and functionality.
