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ATXMEGA128A3U-MHR 8/16-bit AVR XMEGA microcontroller with 128KB Flash memory, 32MHz operating frequency, and 64-QFN package. Supports I²C, SPI, USB, UART interfaces and operates from 1.6V to 3.6V.
Mfr Part #:

ATXMEGA128A3U-MHR

Available from 1 distributors
Mfr Name: Microchip Technology
Microchip Technology
8/16-bit AVR XMEGA microcontroller with 128KB Flash memory, 32MHz operating frequency, and 64-QFN package. Supports I²C, SPI, USB, UART interfaces and operates from 1.6V to 3.6V.
✓ Total Stock: 2,000 pcs

ATXMEGA128A3U-MHR Available from 1 distributor

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✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Xingangxin ✓
Non-Authorised Inventory information
2,000 pcs
On Request
2000 pcs On Request 1 On Request On Request On Request On Request On Request
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ATXMEGA128A3U-MHR Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Connectivity
Core Processor
Core Size
Data Converters
EEPROM Size
Halogen Free
Mounting Type
Number of I
Operating Temperature
Oscillator Type
Peripherals
Program Memory Size
Program Memory Type
RAM Size
Speed
Supplier Device Package
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ATXMEGA128A3U-MHR Description

Short technical summary and product information.

The Microchip ATXMEGA128A3U-MHR is an 8/16-bit AVR XMEGA microcontroller featuring 128KB of in-system self-programmable Flash memory, 8KB SRAM, and 2KB EEPROM. It operates at up to 32MHz with an internal oscillator and supports a supply voltage range of 1.6V to 3.6V. This device includes a rich set of peripherals such as a 4-channel DMA controller, 7 timer/counters, USB 2.0 full-speed device interface, and multiple serial communication interfaces including I²C, SPI, UART/USART, and IrDA. It also features 16-channel 12-bit ADC and 2-channel 12-bit DAC converters.

 

The microcontroller is housed in a 64-VFQFN exposed pad package (64-QFN 9x9mm) and is designed for surface mount assembly. It operates over an industrial temperature range of -40°C to 85°C. The device is lead-free, halogen-free, and RoHS compliant, making it suitable for environmentally sensitive applications. Typical applications include industrial control, consumer electronics, and embedded systems requiring high performance and low power consumption.

ATXMEGA128A3U-MHR Quick Information

Product Type: Microcontroller
Series: XMEGA A3U
Canonical Name: Microchip ATXMEGA128A3U-MHR 8/16-bit AVR XMEGA Microcontroller
Subcategory: 8/16-bit MCU

ATXMEGA128A3U-MHR Compliance

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

ATXMEGA128A3U-MHR Features

  • 8/16-bit AVR XMEGA core with 32MHz operation.
  • 128KB Flash, 8KB SRAM, and 2KB EEPROM memory.
  • 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 with -40°C to 85°C range.

ATXMEGA128A3U-MHR Applications

  • Industrial control and automation systems.
  • Consumer electronics with USB connectivity.
  • Embedded sensor and data acquisition modules.
  • Low-power portable and battery-operated devices.

ATXMEGA128A3U-MHR FAQs

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

1.6V to 3.6V.

What is the package type?

64-VFQFN Exposed Pad (64-QFN 9x9mm).

What is the operating temperature range?

-40°C to 85°C.

Is the device RoHS compliant?

Yes, RoHS3 compliant.

What is the maximum clock speed?

32MHz.

How much Flash memory does it have?

128KB.

What communication interfaces are supported?

I²C, IrDA, SPI, UART/USART, USB.

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