Overview
The ATMEGA328P-AU is a low-power, CMOS 8-bit microcontroller based on the AVR® enhanced RISC architecture. It is part of the ATmega series from Microchip Technology. This microcontroller is known for its high performance and low power consumption, making it suitable for a wide range of applications. By executing instructions in a single clock cycle, the device achieves CPU throughput approaching one million instructions per second (MIPS) per megahertz, allowing system designers to optimize power consumption versus processing speed.
Key Specifications
| Specification | Value |
|---|---|
| Part Family | ATmegaAVR |
| Architecture | 8-bit AVR |
| Max Speed (MHz) | 20 |
| Program Memory Type | Flash |
| Program Memory Size (KB) | 32 |
| RAM (KB) | 2 |
| Data EEPROM (bytes) | 1024 |
| Operation Voltage Min. (V) | 1.8 |
| Operation Voltage Max. (V) | 5.5 |
| Temperature Range Min. (°C) | -40 |
| Temperature Range Max. (°C) | 85 |
| Max I/O Pins | 23 |
| Pin Count | 32 |
| ADC Channels | 8 |
| Max ADC Sampling Rate (ksps) | 15 |
| Max ADC Resolution (bits) | 10 |
| Standard UART | 1 |
| SPI™ | 2 |
| I2C | 1 |
| Internal Oscillator | Yes |
| Low Power | Yes |
| Watch Dog Timers (WDT) | Yes |
Key Features
- High Performance and Low Power: The ATMEGA328P-AU features high performance and low power consumption, making it efficient for various applications.
- Advanced RISC Architecture: The device uses an enhanced RISC architecture, allowing it to execute instructions in a single clock cycle and achieve high CPU throughput.
- In-System Programming: It supports in-system programming by an on-chip boot program, enabling true read-while-write operation.
- Programmable I/O Lines: The microcontroller has 23 programmable I/O lines, providing flexibility in design.
- Multiple Communication Interfaces: It includes one standard UART, two SPI interfaces, and one I2C interface, facilitating communication with other devices.
- ADC and Timers: The device features an 8-channel ADC with a maximum sampling rate of 15 ksps and multiple timers, including two 8-bit digital timers and one 16-bit digital timer.
- Internal Voltage Reference and Oscillator: It has an internal voltage reference and oscillator, simplifying the design process.
- Low Power and Watch Dog Timers: The microcontroller supports low power modes and includes watch dog timers for reliability.
Applications
- Embedded Systems: The ATMEGA328P-AU is widely used in embedded systems due to its high performance, low power consumption, and versatile I/O capabilities.
- IoT Devices: It is suitable for Internet of Things (IoT) applications, especially those requiring low power and high efficiency.
- Robotics and Automation: The microcontroller is often used in robotics and automation projects due to its ability to handle multiple tasks and interfaces.
- Consumer Electronics: It can be found in various consumer electronics, such as remote controls, gaming devices, and other portable electronics.
- Industrial Control Systems: The ATMEGA328P-AU is used in industrial control systems for its reliability and ability to operate in a wide temperature range.
Q & A
- What is the ATMEGA328P-AU microcontroller?
The ATMEGA328P-AU is a low-power, CMOS 8-bit microcontroller based on the AVR® enhanced RISC architecture from Microchip Technology.
- What is the maximum operating speed of the ATMEGA328P-AU?
The maximum operating speed of the ATMEGA328P-AU is 20 MHz.
- What is the program memory size of the ATMEGA328P-AU?
The program memory size of the ATMEGA328P-AU is 32 KB.
- How many I/O pins does the ATMEGA328P-AU have?
The ATMEGA328P-AU has 23 programmable I/O pins.
- What are the operating voltage ranges for the ATMEGA328P-AU?
The operating voltage ranges for the ATMEGA328P-AU are from 1.8V to 5.5V.
- Does the ATMEGA328P-AU support in-system programming?
Yes, the ATMEGA328P-AU supports in-system programming by an on-chip boot program.
- What communication interfaces are available on the ATMEGA328P-AU?
The ATMEGA328P-AU includes one standard UART, two SPI interfaces, and one I2C interface.
- Does the ATMEGA328P-AU have an internal oscillator?
Yes, the ATMEGA328P-AU has an internal oscillator.
- What is the temperature range for the ATMEGA328P-AU?
The temperature range for the ATMEGA328P-AU is from -40°C to 85°C.
- Is the ATMEGA328P-AU suitable for IoT applications?
Yes, the ATMEGA328P-AU is suitable for IoT applications due to its low power consumption and high efficiency.
