Microchip Technology ATXMEGA128A3U-AUR

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Product attributes Property Value
Manufacturer Microchip Technology
Product Series AVR® XMEGA® A3U
Packaging Cut Tape (CT) | Tape & Reel (TR)
Core Processor AVR
Core Size 8/16-Bit
Speed 32MHz
Connectivity I2C, IrDA, SPI, UART/USART, USB
Peripherals Brown-out Detect/Reset, DMA, POR, PWM, WDT
Number of I/O 50
Program Memory Size 128KB (64K x 16)
Program Memory Type FLASH
EEPROM Size 2K x 8
RAM Size 8K x 8
Voltage - Supply (Vcc/Vdd) 1.6V ~ 3.6V
Data Converters A/D 16x12b; D/A 2x12b
Oscillator Type Internal
Operating Temperature -40°C ~ 85°C (TA)
Grade -
Qualification AEC -
Mounting Type Surface Mount
Supplier Device Package 64-TQFP (14x14)
Package / Case 64-TQFP
ROHS RoHS Compliant - Hazardous Substance Free Electronic Components | HQICKEY

The ATXMEGA128A3U is a high-performance 8/16-bit AVR microcontroller from Microchip. It operates at up to 32MHz with a voltage range of 1.6V to 3.6V. Featuring 128KB flash and 8KB SRAM, it integrates DMA, PWM, and brown-out detection in a compact 64-TQFP package, ideal for demanding embedded applications.

  • High efficiency: 32MHz AVR core delivers 1 MIPS/MHz for responsive processing.
  • Low power: 1.6V operation reduces energy consumption in portable devices.
  • Data throughput: DMA controller enables background data movement without CPU intervention.
  • Reliability: Brown-out detect and watchdog timer ensure stable operation.
  • Compact integration: 64-TQFP package with rich peripherals saves board space.

Industrial Control Systems

With 128KB flash and 8KB SRAM, it handles complex control loops and communication protocols at 32MHz.

Battery-Powered IoT Sensors

Operating from 1.6V, it extends battery life while maintaining performance for periodic sensor readings.

Motor Control

Built-in PWM channels and DMA enable smooth, low-latency motor drive waveforms.

Data Acquisition Systems

The DMA controller offloads ADC data transfer, freeing the CPU for processing.

Portable Medical Devices

Low power consumption and brown-out detection ensure reliable operation in critical health monitoring.

Smart Meters

Robust WDT and POR features provide reliable long-term operation in utility environments.

Q: What is the operating voltage range?
A: 1.6V to 3.6V, suitable for battery-powered designs.
Q: What is the maximum clock speed?
A: 32MHz at full voltage range.
Q: Does it support DMA?
A: Yes, it includes a DMA controller for efficient data transfer.
Q: What package is available?
A: 64-TQFP package.
Q: What is the program memory size?
A: 128KB of in-system programmable flash.
Base Product Number : ATXMEGA128A3U
128KB Flash 16-bit 32MHz 8-bit 8KB SRAM AVR DMA Industrial IoT MCU Medical PWM TQFP-64
Q: What is the operating voltage range?
A: 1.6V to 3.6V, suitable for battery-powered designs.
Q: What is the maximum clock speed?
A: 32MHz at full voltage range.
Q: Does it support DMA?
A: Yes, it includes a DMA controller for efficient data transfer.
Q: What package is available?
A: 64-TQFP package.
Q: What is the program memory size?
A: 128KB of in-system programmable flash.