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ATXMEGA64A3U-AU The ATXMEGA64A3U-AU is an 8/16-bit AVR XMEGA microcontroller from Microchip Technology featuring 64KB Flash memory, 4KB RAM, and 2KB EEPROM. It operates at up to 32 MHz and includes USB 2.0, multiple serial interfaces, and advanced peripherals.
Mfr Part #:

ATXMEGA64A3U-AU

Available from 3 distributors
Mfr Name: Microchip Technology
Microchip Technology
The ATXMEGA64A3U-AU is an 8/16-bit AVR XMEGA microcontroller from Microchip Technology featuring 64KB Flash memory, 4KB RAM, and 2KB EEPROM. It operates at up to 32 MHz and includes USB 2.0, multiple serial interfaces, and advanced peripherals.
✓ Total Stock: 9,246 pcs

ATXMEGA64A3U-AU Available from 3 distributors

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✓ Non-Authorised
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Components Technology Group, Inc. ✓
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5,750 pcs
On Request
5750 pcs On Request 1 On Request On Request On Request On Request On Request
Braun Electronic Components ✓
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1,800 pcs
On Request
1800 pcs On Request 1 On Request On Request On Request On Request On Request
Xingangxin ✓
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1,696 pcs
On Request
1696 pcs On Request 1 On Request On Request On Request On Request On Request
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ATXMEGA64A3U-AU Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Connectivity
Core Processor
Core Size
Data Converters
EEPROM Size
Lead Style
Mounting Type
Number of I
Operating Temperature
Oscillator Type
Peripherals
Program Memory Size
Program Memory Type
RAM Size
Speed
Supplier Device Package
Voltage
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ATXMEGA64A3U-AU Description

Short technical summary and product information.

The ATXMEGA64A3U-AU is a high-performance, low-power 8/16-bit AVR XMEGA microcontroller from Microchip Technology. It is based on the AVR core and offers a rich set of features for embedded applications.

 

Key specifications include 64KB of in-system self-programmable Flash, 4KB SRAM, and 2KB EEPROM. The CPU can run at up to 32 MHz at 2.7V or 12 MHz at 1.6V. It includes 50 general-purpose I/O pins, a 16-channel 12-bit ADC, a 2-channel 12-bit DAC, and multiple serial interfaces including I2C, SPI, USART, and USB 2.0. Peripherals include a four-channel DMA controller, eight-channel event system, seven 16-bit timer/counters, and a crypto engine supporting AES and DES.

 

The microcontroller supports a wide operating voltage range of 1.6V to 3.6V and an industrial temperature range of -40°C to 85°C. It features multiple sleep modes for low-power operation, brown-out detection, and a programmable watchdog timer. The device is suitable for applications requiring connectivity, real-time control, and data processing.

 

The ATXMEGA64A3U-AU is offered in a 64-pin TQFP package (14x14 mm) with surface mount mounting. It is RoHS3 compliant and lead-free.

ATXMEGA64A3U-AU Quick Information

Product Type: Microcontroller
Series: A3U
Canonical Name: Microchip ATXMEGA64A3U-AU AVR XMEGA 8/16-bit Microcontroller with 64KB Flash
Subcategory: 8/16-bit AVR Microcontroller

ATXMEGA64A3U-AU Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected
Lead Free: Lead Free (Pb-free)

ATXMEGA64A3U-AU Features

  • 8/16-bit AVR XMEGA core with 32 MHz speed.
  • 64KB Flash, 4KB SRAM, and 2KB EEPROM.
  • Integrated USB 2.0 full-speed device interface.
  • 16-channel 12-bit ADC and 2-channel 12-bit DAC.
  • Operates from 1.6V to 3.6V, -40°C to 85°C.

ATXMEGA64A3U-AU Applications

  • Ideal for industrial control and automation systems.
  • Suitable for USB-enabled embedded applications.
  • Used in sensor interfacing and data acquisition.
  • Applicable in low-power battery-operated devices.

ATXMEGA64A3U-AU FAQs

7 frequently asked questions generated from this part’s specifications.
What is the operating voltage range of the ATXMEGA64A3U-AU?

1.6V to 3.6V.

What package does the ATXMEGA64A3U-AU come in?

64-TQFP (14x14 mm) surface mount package.

What is the operating temperature range?

-40°C to 85°C.

Is the ATXMEGA64A3U-AU RoHS compliant?

Yes, it is RoHS3 compliant (Pb-free, Halide free, Green).

What is the maximum clock speed?

32 MHz at 2.7V, 12 MHz at 1.6V.

Does it have USB connectivity?

Yes, it has a USB 2.0 full-speed and low-speed device interface.

How many I/O pins does it have?

50 general-purpose I/O pins.

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