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Product Detailed Parameters
- Description：IC MCU 8/16BIT 64KB FLASH 44TQFP
- Series：AVR® XMEGA® A4
- Mfr：Microchip Technology
- Package：Tray
- Core Processor：AVR
- Core Size：8/16-Bit
- Speed：32MHz
- Connectivity：I2C, IrDA, SPI, UART/USART
- Peripherals：Brown-out Detect/Reset, DMA, POR, PWM, WDT
- Number of I/O：34
- 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 12x12b; D/A 2x12b
- Oscillator Type：Internal
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Supplier Device Package：44-TQFP (10x10)
- Package / Case：44-TQFP
- Grade：-
- Qualification：-
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Overview
The ATXMEGA64A4-AU is an 8/16-bit AVR XMEGA microcontroller featuring 64 KB of In-System Self-Programmable Flash, 4 KB of Boot Code Section, 2 KB of EEPROM, and 4 KB of Internal SRAM. It operates at a maximum clock frequency of 32 MHz with a supply voltage range of 1.6 V to 3.6 V. The device includes a four-channel DMA controller, eight-channel event system, five 16-bit Timer/Counters, five USARTs, two TWIs, two SPIs, AES/DES crypto engine, one 12-channel 12-bit ADC, one two-channel 12-bit DAC, and two analog comparators. It provides 34 programmable I/O lines in a 44-lead TQFP package.
Feature Summary
- High-performance 8/16-bit AVR RISC architecture executing instructions in a single clock cycle.
- Integrated four-channel DMA controller supporting high-speed data transfers between memory and peripherals.
- Eight-channel Event System enabling inter-peripheral communication with minimum latency without CPU intervention.
- Advanced security features including AES and DES crypto engines for data protection.
Applications
- Industrial control systems
- Factory automation equipment
- Hand-held battery applications
- Motor control units
- Medical devices
Procurement Notes
Verify the component status as this specific model is not recommended for new designs; the XMEGA A4U series is the designated successor. Confirm that the ordering suffix 'AU' corresponds to the 44-lead TQFP package variant. Ensure compliance with RoHS directives and verify humidity sensitivity handling requirements during assembly.
Selection Notes
Select this component only if legacy compatibility with the XMEGA A4 family is required. Evaluate the 32 MHz performance against power consumption constraints within the 1.6 V to 3.6 V operating range. Consider the availability of development tools and software frameworks compatible with the AVR XMEGA architecture for implementation.
Part Context
This part belongs to the Atmel AVR XMEGA A4 microcontroller family, manufactured by Microchip Technology. It utilizes CMOS technology and supports In-System Programming via the PDI interface. The device is designed for embedded applications requiring high performance and low power consumption, featuring read-while-write capabilities in its Flash memory.
Replacement Considerations
Microchip recommends using the XMEGA A4U series as a replacement for new designs. Verify pinout compatibility and peripheral feature parity when migrating from the ATXMEGA64A4-AU to newer alternatives within the same product line.
FAQ
What is the recommended successor to the ATXMEGA64A4-AU?
Microchip recommends using the XMEGA A4U series for new designs instead of the ATXMEGA64A4-AU.
Does the ATXMEGA64A4-AU support Read-While-Write operations?
Yes, the device features In-System Programmable Flash with Read-While-Write capabilities, allowing the bootloader to run while the application section is updated.
