ATXMEGA128A1U-AU
The ATXMEGA128A1U-AU is available in a green color, adding a visually pleasing element to your electronic designsATXMEGA128A1U-AU
The ATXMEGA128A1U-AU is available in a green color, adding a visually pleasing element to your electronic designs
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Manufacturer Part # : ATXMEGA128A1U-AU
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Package/Case: TQFP-100
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Brand: Microchip Technology
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Product Categories : Microcontrollers
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Series : ATXMEGA128
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Service & Packaging
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Initiate the application within 90 days from the shipment date.
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ATXMEGA128A1U-AU 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!
Interested Parts
ATXMEGA128A1U-AU Description
The ATXMEGA128A1U-AU is a high-performance microcontroller from Microchip, designed for use in embedded systems, industrial automation, data communication, and consumer electronics applications. It features a wide range of peripherals and interfaces, making it suitable for a variety of applications.
Features
- High-Performance Microcontroller: The ATXMEGA128A1U-AU features a high-performance microcontroller with a clock speed of up to 16 MHz.
- Wide Range of Peripherals and Interfaces: It has a wide range of peripherals and interfaces, including UARTs, SPI, I2C, and more.
- Low Power Consumption: The microcontroller is designed to consume low power, making it suitable for battery-powered devices.
- Wide Temperature Range: It operates within a wide temperature range of -40°C to +125°C, allowing it to function reliably in various environmental conditions.
Applications
The ATXMEGA128A1U-AU is commonly used in systems that require high-performance processing and low power consumption, such as embedded systems, industrial automation, data communication, and consumer electronics applications.
Where to Use:
- Embedded systems
- Industrial automation systems
- Data communication systems
- Consumer electronics devices
Manufacturer
The ATXMEGA128A1U-AU is manufactured by Microchip, a global leader in semiconductor technology.
Packages
The ATXMEGA128A1U-AU comes in a 28-pin QFN package.
Other Information:
- Datasheet: The datasheet for the ATXMEGA128A1U-AU can be found on the Microchip website.
- Application Notes: Application notes and tutorials are available on the Microchip website to help you get started with using the ATXMEGA128A1U-AU in your project.

Specifications
The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.
Product Category ! | 8-bit Microcontrollers - MCU | RoHS | Details |
Core | AVR | Program Memory Size | 128 kB |
Data RAM Size | 8 kB | Package / Case | TQFP-100 |
Maximum Clock Frequency | 32 MHz | ADC Resolution | 12 bit |
Number of I/Os | 78 I/O | Supply Voltage - Min | 1.6 V |
Supply Voltage - Max | 3.6 V | Mounting Style | SMD/SMT |
Data Bus Width | 8 bit/16 bit | Minimum Operating Temperature | - 40 C |
Maximum Operating Temperature ! | + 105 C | Series | XMEGA A1U |
Brand | Microchip Technology | Data RAM Type | SRAM |
Data ROM Size | 2 kB | Data ROM Type | EEPROM |
Interface Type | I2C, SPI, UART | Moisture Sensitive | Yes |
Number of ADC Channels | 16 Channel | Number of Timers/Counters | 8 Timer |
Processor Series | AVR XMEGA | Product | MCUs |
Product Type ! | 8-bit Microcontrollers - MCU | Program Memory Type ! | Flash |
Factory Pack Quantity | 90 | Subcategory | Microcontrollers - MCU |
Tradename | XMEGA | Unit Weight | 0.023175 oz |
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.
FAQs
What is ATXMEGA128A1U-AU?
The ATXMEGA128A1U-AU is a high-performance, low-power microcontroller from Microchip Technology. It belongs to the ATxmega family of 8/16-bit microcontrollers and is designed for applications requiring advanced processing capabilities and low power consumption.
How Does ATXMEGA128A1U-AU Work?
The ATXMEGA128A1U-AU operates as a versatile microcontroller with advanced features such as a high-speed 12-bit ADC, multiple communication interfaces, and a rich set of peripherals. It executes instructions stored in its flash memory, interacts with external devices through various I/O pins, and communicates data efficiently through its communication modules.
How Many Pins does ATXMEGA128A1U-AU have and What are the Functions of the Pinout Configuration?
The ATXMEGA128A1U-AU comes in a 44-pin TQFP (Thin Quad Flat Package) configuration. The pinout configuration includes:
- VCC, GND: Power supply and ground pins.
- PORTx: General-purpose I/O pins.
- USARTx: Universal Synchronous/Asynchronous Receiver/Transmitter.
- SPIx: Serial Peripheral Interface pins.
- TWI: Two-Wire Interface pins.
- ADCA: Analog-to-Digital Converter channel.
- DAC: Digital-to-Analog Converter output.
- CLK, RESET, IRQ: Clock, reset, and interrupt control pins.
What are the Pros and Cons of ATXMEGA128A1U-AU?
Pros:
- High-Performance: Offers advanced processing capabilities suitable for complex applications.
- Low Power Consumption: Operates with low power requirements, ideal for battery-powered devices.
- Rich Peripheral Set: Features a wide range of peripherals for added functionality.
- High-Speed ADC: Includes a high-resolution analog-to-digital converter for accurate sensor data acquisition.
- Flexible Communication Interfaces: Supports multiple communication protocols for seamless connectivity.
Cons:
- Complexity: Due to its advanced features, may require a learning curve for beginners.
- Cost: Higher cost compared to simpler microcontrollers with fewer features.
- Board Space: The 44-pin package may require more board space compared to smaller microcontrollers.
Are There Any Equivalents/Alternatives to ATXMEGA128A1U-AU for Recommendation?
- The ATmega128 from Microchip is a comparable 8-bit microcontroller with similar features.
- Alternatives to the ATXMEGA128A1U-AU include the STM32F4 series from STMicroelectronics and the PIC32 series from Microchip.
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