Microchip Technology ATXMEGA64A3U-AN

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Product attributes Property Value
Manufacturer Microchip Technology
Product Series AVR® XMEGA® A3U
Packaging | Tray
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 64KB (32K x 16)
Program Memory Type FLASH
EEPROM Size 2K x 8
RAM Size 4K 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 ~ 105°C (TA)
Grade -
Qualification -
Mounting Type Surface Mount
Supplier Device Package 64-TQFP (14x14)
Package / Case 64-TQFP
ROHS RoHS Compliant - Hazardous Substance Free Electronic Components | HQICKEY

The Microchip ATXMEGA64A3U-AN is a mid-range 8/16-bit AVR microcontroller with 64 KB of flash and 4 KB of SRAM. It operates at 32 MHz with a supply voltage from 1.6V to 3.6V, featuring DMA, PWM, brown-out detection, and watchdog timer. Housed in a 64-TQFP package, it balances performance and I/O count for a wide range of embedded control applications.

  • DMA Efficiency: Offloads data transfers, freeing the CPU for critical tasks.
  • Compact Package: 64-TQFP fits space-constrained designs while offering sufficient I/O.
  • Wide Voltage Range: 1.6V to 3.6V supports battery and regulated supplies.
  • High-Temperature Operation: Rated up to 105°C for industrial environments.

Portable Medical Devices

The 64-TQFP package and low 1.6V operation make it suitable for compact glucose meters and pulse oximeters, with DMA for sensor data streaming.

Industrial Sensor Hubs

With 64 KB flash and PWM, it can aggregate multiple analog sensors and drive actuators in factory automation, running reliably at 105°C.

Smart Home Controllers

Its low power and robust WDT/BOD ensure reliable operation in always-on smart thermostats and security panels.

Battery Management Systems

The wide voltage range allows direct monitoring of multi-cell batteries, while DMA handles high-speed ADC sampling for cell balancing.

RFID Readers

32 MHz speed and PWM enable precise timing for RFID signal generation and decoding in access control systems.

Test and Measurement

The 64-TQFP offers enough I/O for parallel interfaces to LCDs and external memory, supporting portable oscilloscopes and data loggers.

Q: What is the maximum clock speed?
A: The ATXMEGA64A3U-AN operates at up to 32 MHz.
Q: What is the flash memory size?
A: It has 64 KB of program flash.
Q: What is the package type?
A: It comes in a 64-TQFP package.
Q: Does it have a DMA controller?
A: Yes, it includes DMA for efficient data transfer.
Q: What is the supply voltage?
A: It operates from 1.6V to 3.6V.
Base Product Number : ATXMEGA64A3U
32MHz 64-TQFP 64KB Flash 8/16-bit MCU AVR DMA Industrial Low Power Medical PWM
Q: What is the maximum clock speed?
A: The ATXMEGA64A3U-AN operates at up to 32 MHz.
Q: What is the flash memory size?
A: It has 64 KB of program flash.
Q: What is the package type?
A: It comes in a 64-TQFP package.
Q: Does it have a DMA controller?
A: Yes, it includes DMA for efficient data transfer.
Q: What is the supply voltage?
A: It operates from 1.6V to 3.6V.