規格
| 屬性 | 價值 |
| Package / Case | Tube |
| Series | AVR® ATmega |
| Part Status | Active |
| Core Processor | AVR |
| Core Size | 8-Bit |
| Speed | 20MHz |
| Connectivity | I²C, SPI, UART/USART |
| Peripherals | Brown-out Detect/Reset, POR, PWM, WDT |
| Number of I/O | 23 |
| Program Memory Size | 32KB (16K x 16) |
| Program Memory Type | FLASH |
| EEPROM Size | 1K x 8 |
| RAM Size | 2K x 8 |
| Voltage - Supply (Vcc/Vdd) | 1.8V ~ 5.5V |
| Data Converters | A/D 6x10b |
| Oscillator Type | Internal |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Mounting Type | Through Hole |
概述
Description
The ATmega328-PU is an 8-bit microcontroller from Microchip Technology, part of the AVR family, widely used in embedded systems and hobbyist projects like Arduino. It features a RISC architecture, offering 32 general-purpose working registers and operates at up to 20 MHz. The chip includes 32 KB of flash memory, 1 KB of EEPROM, and 2 KB of SRAM, making it suitable for a variety of applications.
The ATmega328-PU supports several communication protocols, including I2C, SPI, and UART, facilitating easy integration with other devices and sensors. It has 23 programmable I/O lines and features 6-channel 10-bit ADC (Analog-to-Digital Converter), which is useful for analog signal processing. Power consumption is minimized with several power-saving modes, making it ideal for battery-powered applications.
The microcontroller is often used in Arduino boards, specifically the Arduino Uno, due to its flexibility, performance, and ease of programming. Its popularity in the maker community is supported by extensive documentation, tutorials, and a large user base, making it accessible for both beginners and experienced developers.
The ATmega328-PU supports several communication protocols, including I2C, SPI, and UART, facilitating easy integration with other devices and sensors. It has 23 programmable I/O lines and features 6-channel 10-bit ADC (Analog-to-Digital Converter), which is useful for analog signal processing. Power consumption is minimized with several power-saving modes, making it ideal for battery-powered applications.
The microcontroller is often used in Arduino boards, specifically the Arduino Uno, due to its flexibility, performance, and ease of programming. Its popularity in the maker community is supported by extensive documentation, tutorials, and a large user base, making it accessible for both beginners and experienced developers.
Equivalent
Equivalent products to the ATmega328-PU microcontroller include:
1. ATmega328P-PU: A low-power version with the same functionality.
2. ATmega168: Similar architecture but with less flash memory (16 KB).
3. ATmega32: Offers more I/O pins and memory.
4. Microchip's PIC16F877A: Similar size and functionality, but different architecture.
5. STM32F030: Arm Cortex-M0 based, offering more computational power.
These alternatives vary in capabilities and architecture, so compatibility with existing systems should be considered.
1. ATmega328P-PU: A low-power version with the same functionality.
2. ATmega168: Similar architecture but with less flash memory (16 KB).
3. ATmega32: Offers more I/O pins and memory.
4. Microchip's PIC16F877A: Similar size and functionality, but different architecture.
5. STM32F030: Arm Cortex-M0 based, offering more computational power.
These alternatives vary in capabilities and architecture, so compatibility with existing systems should be considered.
Features
The ATMEGA328-PU is a popular microcontroller from the AVR family, known for its low power consumption and high performance. Key features include:
1. Architecture: 8-bit AVR RISC architecture.
2. Clock Speed: Up to 20 MHz.
3. Flash Memory: 32KB, with read-while-write capabilities.
4. SRAM: 2KB.
5. EEPROM: 1KB.
6. GPIO Pins: 23 programmable I/O lines.
7. Timers: Three timers (two 8-bit and one 16-bit).
8. Communication Interfaces: Includes USART, SPI, and I2C (TWI).
9. ADC: 10-bit, 6-channel analog-to-digital converter.
10. PWM: Supports pulse-width modulation on several pins.
11. Watchdog Timer: Built-in for system reliability.
12. Operating Voltage: 1.8V to 5.5V.
13. Power Consumption: Low power features with power-saving modes.
14. Package: 28-pin DIP.
The ATMEGA328-PU is widely used in hobbyist and professional projects, notably in the Arduino Uno, due to its robust feature set and ease of use.
1. Architecture: 8-bit AVR RISC architecture.
2. Clock Speed: Up to 20 MHz.
3. Flash Memory: 32KB, with read-while-write capabilities.
4. SRAM: 2KB.
5. EEPROM: 1KB.
6. GPIO Pins: 23 programmable I/O lines.
7. Timers: Three timers (two 8-bit and one 16-bit).
8. Communication Interfaces: Includes USART, SPI, and I2C (TWI).
9. ADC: 10-bit, 6-channel analog-to-digital converter.
10. PWM: Supports pulse-width modulation on several pins.
11. Watchdog Timer: Built-in for system reliability.
12. Operating Voltage: 1.8V to 5.5V.
13. Power Consumption: Low power features with power-saving modes.
14. Package: 28-pin DIP.
The ATMEGA328-PU is widely used in hobbyist and professional projects, notably in the Arduino Uno, due to its robust feature set and ease of use.
Pinout
The ATMEGA328-PU is an 8-bit microcontroller from Atmel's AVR family, commonly used in Arduino boards. It has a total of 28 pins. Here's a brief overview of its key pin functions:
1. Power Supply:
- VCC: Digital supply voltage.
- GND: Ground.
- AVCC: Supply voltage for analog circuitry.
- AREF: Analog reference pin for the A/D converter.
2. Digital I/O:
- 14 Digital I/O pins (D0-D13), of which 6 (D3, D5, D6, D9, D10, D11) provide PWM output.
3. Analog Input:
- 6 Analog input pins (A0-A5).
4. Special Function:
- TXD (D1) and RXD (D0) for serial communication.
- SCK (D13), MISO (D12), MOSI (D11) for SPI communication.
- SDA (A4) and SCL (A5) for TWI/I2C communication.
- RESET: Resets the microcontroller.
This microcontroller is versatile and widely used due to its balance of features and simplicity.
1. Power Supply:
- VCC: Digital supply voltage.
- GND: Ground.
- AVCC: Supply voltage for analog circuitry.
- AREF: Analog reference pin for the A/D converter.
2. Digital I/O:
- 14 Digital I/O pins (D0-D13), of which 6 (D3, D5, D6, D9, D10, D11) provide PWM output.
3. Analog Input:
- 6 Analog input pins (A0-A5).
4. Special Function:
- TXD (D1) and RXD (D0) for serial communication.
- SCK (D13), MISO (D12), MOSI (D11) for SPI communication.
- SDA (A4) and SCL (A5) for TWI/I2C communication.
- RESET: Resets the microcontroller.
This microcontroller is versatile and widely used due to its balance of features and simplicity.
Manufacturer
The ATMEGA328-PU is manufactured by Microchip Technology Inc. This company is a leading provider of microcontroller, mixed-signal, analog, and Flash-IP solutions. Microchip Technology is known for producing a wide range of semiconductor products that are used in various embedded control applications. The company focuses on delivering innovative solutions that help improve product performance and functionality while reducing system cost and development time. It serves a broad range of markets, including automotive, industrial, consumer electronics, and communications. Microchip Technology is headquartered in Chandler, Arizona, and has operations around the world.
Application
The ATMEGA328-PU is a versatile microcontroller widely used in various applications due to its affordability and ease of use. Common application areas include:
1. Embedded Systems: Used in home automation, automotive systems, and consumer electronics.
2. Arduino Projects: It is the core of the Arduino Uno, popular for DIY electronics projects.
3. Robotics: Employed in control systems for small robots and drones.
4. IoT Devices: Acts as a controller in IoT applications for data collection and processing.
5. Prototyping and Education: Used in educational kits and prototyping for electronics and programming.
6. Sensor Networks: Facilitates data acquisition from sensors in networked environments.
These applications leverage its low power consumption, sufficient memory, and input/output flexibility.
1. Embedded Systems: Used in home automation, automotive systems, and consumer electronics.
2. Arduino Projects: It is the core of the Arduino Uno, popular for DIY electronics projects.
3. Robotics: Employed in control systems for small robots and drones.
4. IoT Devices: Acts as a controller in IoT applications for data collection and processing.
5. Prototyping and Education: Used in educational kits and prototyping for electronics and programming.
6. Sensor Networks: Facilitates data acquisition from sensors in networked environments.
These applications leverage its low power consumption, sufficient memory, and input/output flexibility.
Package
The ATMEGA328-PU is an 8-bit microcontroller from Microchip Technology, packaged in a 28-pin Dual In-line Package (DIP). This package type is favorable for hobbyists and prototyping due to its ease of use with breadboards and sockets.
