Overview
The ATMEGA128A-AU microcontroller, manufactured by Microchip Technology, is a versatile and high-performance 8-bit microcontroller. It is built around the advanced AVR® RISC CPU core, operating at speeds of up to 16 MHz. This microcontroller is renowned for its robust processing capabilities, making it suitable for a wide range of embedded applications. It features 128 KB of Flash memory, 4 KB of EEPROM, and 4 KB of SRAM, providing ample storage for program code and data. The ATMEGA128A-AU is designed for battery-powered applications and excels in industrial automation, consumer electronic systems, automotive applications, and more due to its low power consumption and wide operating voltage range.
Key Specifications
| Attribute | Specification |
|---|---|
| Manufacturer | Microchip Technology |
| Family Name | ATmega |
| Core Processor | AVR |
| Program Memory Type | Flash |
| Flash Size | 128 KB |
| RAM Size | 4 KB SRAM, 4 KB EEPROM |
| Speed | Up to 16 MHz |
| No of I/O Lines | 53 |
| Interface/Connectivity | EBI/EMI/I2C/SPI/UART/USART |
| Peripherals | Brown-out Detect, POR, PWM, Reset, Watchdog |
| Number of Timers | 4 (2 x 8-bit, 2 x 16-bit) |
| Supply Voltage | 2.7V to 5.5V |
| Operating Temperature | -40°C to +85°C |
| On-Chip ADC | 8-channel, 10-bit |
| Watchdog Timers | 1 |
| Package Style | TQFP-64 |
| Mounting Method | Surface Mount |
Key Features
- High-Performance AVR® CPU Core: The ATMEGA128A-AU features an advanced AVR® RISC CPU core, operating at speeds of up to 16 MHz, providing efficient instruction execution and effective peripheral control.
- Memory Resources: It includes 128 KB of Flash memory, 4 KB of EEPROM, and 4 KB of SRAM, ensuring ample storage for firmware and data.
- Comprehensive Peripheral Set: Multiple SPI, I2C, and USART ports, along with analog-to-digital converters (ADCs), pulse-width modulation (PWM) channels, and other peripherals for interfacing with external devices.
- Analog-to-Digital Converter (ADC): A high-resolution 10-bit ADC with multiple channels for accurate acquisition of analog signals.
- Pulse-Width Modulation (PWM) Channels: For controlling motor speed, dimming LEDs, and generating audio signals.
- Timers and Counters: Four timers/counters with various operating modes for generating precise timing intervals and measuring external events.
- External Interrupts: For receiving sensor inputs and communication signals without continuous polling, enhancing system responsiveness and efficiency.
- Wide Operating Voltage Range: Compatible with a variety of power sources and voltage levels, operating between 2.7V to 5.5V.
- Low-Power Consumption: Minimizes energy consumption using sleep modes and power-saving techniques, ideal for battery-powered applications.
- Rich Development Ecosystem: Supports various development tools and interfaces, including JTAG and SPI for in-system programming and debugging.
Applications
- Industrial Automation: Suitable for control systems, sensors, and actuators in industrial environments.
- Consumer Electronic Systems: Used in various consumer electronics requiring robust processing and low power consumption.
- Automotive Applications: Ideal for vehicle control systems, engine management, dashboard displays, and other automotive electronics.
- IoT Devices: Suitable for IoT applications requiring sensor data collection, processing, and cloud communication, such as smart agricultural systems, remote environmental monitoring, and smart wearable devices.
Q & A
- What is the ATMEGA128A-AU microcontroller?
The ATMEGA128A-AU is a high-performance 8-bit microcontroller from Microchip Technology, built around the AVR® RISC CPU core.
- What are the key memory specifications of the ATMEGA128A-AU?
It features 128 KB of Flash memory, 4 KB of EEPROM, and 4 KB of SRAM.
- What is the operating voltage range of the ATMEGA128A-AU?
The ATMEGA128A-AU operates within a voltage range of 2.7V to 5.5V.
- What types of peripherals does the ATMEGA128A-AU support?
It supports multiple SPI, I2C, and USART ports, along with ADCs, PWM channels, and other peripherals.
- What are the primary applications of the ATMEGA128A-AU?
It is used in industrial automation, consumer electronic systems, automotive applications, and IoT devices.
- How does the ATMEGA128A-AU manage power consumption?
It minimizes power consumption through sleep modes and power-saving techniques, making it ideal for battery-powered applications.
- What is the maximum clock speed of the ATMEGA128A-AU?
The maximum clock speed is up to 16 MHz.
- What is the package style of the ATMEGA128A-AU?
The package style is TQFP-64.
- Does the ATMEGA128A-AU support in-system programming?
Yes, it supports in-system programming through SPI and JTAG interfaces.
- What is the operating temperature range of the ATMEGA128A-AU?
The operating temperature range is -40°C to +85°C.
