Microchip Technology ATXMEGA256A3U-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 256KB (128K x 16)
Program Memory Type FLASH
EEPROM Size 4K x 8
RAM Size 16K 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 ATXMEGA256A3U-AUR from Microchip is an 8/16-bit AVR microcontroller running at 32MHz. It provides 256KB flash and 16KB RAM, operating from 1.6V to 3.6V. The 64-TQFP package includes DMA, PWM, and brown-out detection, suitable for low-power and IoT applications.

  • Ultra-low voltage (1.6V): Extends battery life in portable devices.
  • 32MHz AVR core: Provides efficient processing for 8/16-bit applications.
  • 256KB flash: Ample space for complex firmware and data logging.
  • DMA and PWM: Enhances peripheral performance without CPU load.

IoT Edge Nodes

Low voltage (1.6V) and 32MHz speed enable energy-efficient sensor data processing.

Wearable Devices

Small 64-TQFP package and 16KB RAM support health monitoring algorithms.

Smart Home Controllers

DMA and PWM manage lighting and motor control with minimal power draw.

Industrial Sensors

Brown-out detection ensures reliable operation in fluctuating power environments.

Portable Instruments

256KB flash allows complex calibration and logging routines.

Battery Management

Low-power modes extend battery life in monitoring systems.

Q: What is the operating voltage range?
A: It operates from 1.6V to 3.6V, ideal for battery-powered devices.
Q: What is the maximum speed?
A: The AVR core runs at up to 32MHz.
Q: How much flash memory is available?
A: It has 256KB of flash (128K x 16).
Q: What package is this?
A: It comes in a 64-TQFP package.
Base Product Number : ATXMEGA256A3U
16-bit 16KB RAM 256KB Flash 32MHz 64-TQFP 8-bit AVR Brown-out Detect DMA IoT Low Power MCU PWM Wearable
Q: What is the operating voltage range?
A: It operates from 1.6V to 3.6V, ideal for battery-powered devices.
Q: What is the maximum speed?
A: The AVR core runs at up to 32MHz.
Q: How much flash memory is available?
A: It has 256KB of flash (128K x 16).
Q: What package is this?
A: It comes in a 64-TQFP package.