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Product Detailed Parameters
- Description：IC MCU 8/16BIT 64KB FLASH 64QFN
- Series：AVR® XMEGA® D3
- Mfr：Microchip Technology
- Package：Tape & Reel (TR),Cut Tape (CT)
- Core Processor：AVR
- Core Size：8/16-Bit
- Speed：32MHz
- Connectivity：I2C, IrDA, SPI, UART/USART
- Peripherals：Brown-out Detect/Reset, 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
- Oscillator Type：Internal
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Supplier Device Package：64-QFN (9x9)
- Package / Case：64-VFQFN Exposed Pad
- Grade：-
- Qualification：-
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Overview
The ATXMEGA64D3-MHR is an 8-bit microcontroller from the AVR XMEGA D3 series, manufactured by Microchip Technology. It features a 64 kB Flash program memory and 4 kB SRAM data RAM. The device operates on a supply voltage range of 1.6 V to 3.6 V with a maximum clock frequency of 32 MHz. It utilizes a 64-TQFP surface-mount package and supports an operating temperature range from -40°C to +85°C. Key peripherals include a 12-bit ADC with 16 channels, five timers/counters, and communication interfaces such as SPI, TWI (I2C), and USART.
Feature Summary
- Integrates high-performance AVR RISC core with low-power picoPower technology for efficient operation in battery-powered applications.
- Features an event system that allows direct peripheral-to-peripheral communication, reducing CPU load and latency.
- Includes advanced analog capabilities with a 12-bit ADC and support for precise signal processing tasks.
Applications
- Battery-powered thermostats and climate control systems
- Utility meters with RF or ZigBee connectivity
- Building automation controllers
Procurement Notes
Verify the specific suffix 'MHR' indicates tape-and-reel packaging when ordering. Confirm the manufacturer part number matches Microchip's official documentation to ensure authenticity. Check for RoHS compliance status relevant to your region's regulations before finalizing procurement.
Selection Notes
Select this component if a 64 kB Flash size and 50 I/O pins are required within a 64-pin footprint. Ensure the design accommodates the 1.6 V to 3.6 V supply range. Consider the TQFP package constraints for PCB layout compared to QFN alternatives in the same series.
Part Context
This MCU belongs to the AVR XMEGA D3 family, designed for applications requiring large memory ranges with consistent low-power characteristics across different memory sizes. It shares architectural similarities with other D3 devices but offers specific storage capacities tailored for mid-range embedded control tasks.
Replacement Considerations
ATXMEGA64D3-AUR: Similar specifications but in a TQFP package; verify pinout compatibility. ATXMEGA32D3-MH: Lower memory capacity in a QFN-64 package; suitable if reduced storage is acceptable. ATXMEGA128D3-MH: Higher memory capacity in a QFN-64 package; requires package adaptation.
