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Product Detailed Parameters
- Description：IC MCU 8/16BIT 64KB FLASH 44VQFN
- Series：AVR® XMEGA® A4U
- Mfr：Microchip Technology
- Package：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：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-VQFN (7x7)
- Package / Case：44-VFQFN Exposed Pad
- Grade：-
- Qualification：-
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Overview
The ATXMEGA64A4U-MH is an 8/16-bit microcontroller from the AVR XMEGA A4U family, manufactured by Microchip Technology. It features 64KB of in-system self-programmable flash memory, 2KB of EEPROM, and 4KB of internal SRAM. The device operates on a supply voltage range of 1.6V to 3.6V and supports clock frequencies up to 32MHz at 2.7V or higher. It is housed in a 44-lead VQFN package (44M1) with dimensions of 7x7x1mm and a lead pitch of 0.50mm. The operating temperature range extends from -40°C to +85°C.
Feature Summary
- AVR enhanced RISC architecture executing instructions in a single clock cycle for high throughput
- Integrated four-channel DMA controller and eight-channel event system for efficient data handling
- Comprehensive peripheral set including USB 2.0 interface, five USARTs, and cryptographic engines
- Multiple software-selectable power saving modes to optimize energy consumption
Applications
- Industrial control systems
- Climate control units
- Factory automation equipment
- Building control applications
- Medical devices
Procurement Notes
Verify the specific ordering suffix MH corresponds to the 44-lead VQFN package configuration required for your design. Confirm that the component meets RoHS compliance standards as indicated in the manufacturer documentation. Ensure compatibility with the intended operating temperature range of -40°C to +85°C for your application environment before finalizing procurement.
Selection Notes
Select this component when a balance of moderate memory capacity and rich peripheral integration is required within a compact footprint. The VQFN package offers thermal enhancement suitable for space-constrained designs. Consider the 32MHz performance capability relative to the 1.6V to 3.6V supply voltage constraints during system power budgeting.
Part Context
This part belongs to the AVR XMEGA A4U series, which utilizes high-density nonvolatile memory technology. The series is designed to provide cost-effective solutions for embedded applications requiring flexible I/O and advanced connectivity options like USB and wireless interfaces.
Replacement Considerations
Compatible variants within the same package include ATXMEGA32A4U-MH and ATXMEGA128A4U-MH, offering different memory sizes while maintaining pin compatibility.
