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ATXMEGA256A3B-AU

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ATXMEGA256A3B-AU

IC MCU 8/16BIT 256KB FLSH 64TQFP

Manufacturer: Microchip Technology

Categories: Microcontrollers

Quality Control: Learn More

Microchip Technology AVR® XMEGA® A3B microcontroller, part number ATXMEGA256A3B-AU. This 8/16-bit AVR MCU operates at 32MHz, featuring 256KB of FLASH program memory and 16KB of SRAM. The device includes a 4KB EEPROM and offers extensive connectivity options including I2C, IrDA, SPI, and UART/USART. Peripheral capabilities encompass DMA, multiple PWM modules, Brown-out Detect/Reset, POR, and WDT. Data conversion is supported by 16x 12-bit ADCs and 2x 12-bit DACs. Packaged in a 64-TQFP (14x14) surface-mount format, this component is suitable for applications requiring robust control and high-speed data processing. Typical industries utilizing this microcontroller include industrial automation, medical devices, and consumer electronics.

Additional Information

Series: AVR® XMEGA® A3BRoHS Status: ROHS3 CompliantManufacturer Lead Time: No lead time information availableProduct Status: ObsoletePackaging: Tray
Technical Details:
PackagingTray
Package / Case64-TQFP
Mounting TypeSurface Mount
Speed32MHz
Program Memory Size256KB (128K x 16)
RAM Size16K x 8
Operating Temperature-40°C ~ 85°C (TA)
Oscillator TypeInternal
Program Memory TypeFLASH
EEPROM Size4K x 8
Core ProcessorAVR
Data ConvertersA/D 16x12b; D/A 2x12b
Core Size8/16-Bit
Voltage - Supply (Vcc/Vdd)1.6V ~ 3.6V
ConnectivityI2C, IrDA, SPI, UART/USART
PeripheralsBrown-out Detect/Reset, DMA, POR, PWM, WDT
Supplier Device Package64-TQFP (14x14)
Number of I/O49
ProgrammableNot Verified

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Microcontroller FAQs

A microcontroller is a compact integrated circuit that combines a processor, memory, and input/output peripherals for embedded control applications.

Microcontrollers execute programmed instructions to process sensor inputs and control outputs such as motors, displays, and communication interfaces.

Microcontrollers are commonly used in:

  • Automotive systems
  • Robotics
  • IoT devices
  • Industrial automation
  • Household appliances
  • Smart electronics

Microcontrollers integrate memory and peripherals on-chip for dedicated tasks, while microprocessors are designed for higher-performance computing systems requiring external components.

Frequently Asked Questions

As a full line supplier, we specialize in sourcing obsolete and hard to find electronic components for your projects.

After we receive your request submission, one of our account executives will reach out to your team to gather more information about your project requirements and ensure we tailor the order to your needs.

Once requirements such as date codes, quantities, target prices, testing requirements, and more are discussed, our purchasing team will secure stock through Microchip USA’s direct access to manufacturing partners’ excess inventory lists.

Our operations teams will handle logistics and fulfillment to ensure supply chain continuity, and our support team will provide clear communication throughout the process.

Our net terms for electronic component sourcing are flexible and vary by order. Our account executives will work with you to ensure our terms meet your company’s needs. We also offer scheduled shipments and inventory management solutions to ensure a steady supply of electronic components, maintain cash flow, and maximize warranty periods. We always offer a warranty on all tested parts. See our sales terms and conditions for more information.

We partner with industry-leading AS6171 & AS6081-certified third party testing labs to mitigate risk and support a wide array of end uses for your company’s requirements. Testing includes but isn’t limited to: Decapsulation & Internal Dye Verification. X-Ray Inspection & Analysis, External Visual Inspection, Surface Texture Analysis (SEM), and Electrical Pin Correlation.

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