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Product Detailed Parameters
- Description：IC MCU 8/16BIT 384KB FLASH 64QFN
- Series：AVR® XMEGA® D3
- 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, POR, PWM, WDT
- Number of I/O：50
- Program Memory Size：384KB (384K x 8)
- Program Memory Type：FLASH
- EEPROM Size：4K x 8
- RAM Size：32K 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 ATXMEGA384D3-MH is an 8-bit AVR XMEGA D3 microcontroller featuring a 32 MHz CPU, 384 kB Flash memory, and 32 kB SRAM. It operates within a 1.6 V to 3.6 V supply range and includes a 12-bit ADC with 16 channels. The device provides 50 I/O pins and supports interfaces including SPI, USART, and I2C. Packaged in a 64-VQFN, it functions between -40°C and +85°C.
Feature Summary
- Integrates picoPower technology for low-power operation with full SRAM retention during sleep modes.
- Includes a DMA controller and event system to offload data transfer and inter-peripheral signaling from the CPU.
- Features a high-speed USB device interface capable of operation using an internal oscillator.
Applications
- Battery-powered utility meters requiring extended life and large memory capacity.
- Building and climate control systems with display integration.
- Thermostats utilizing RF or ZigBee connectivity modules.
Procurement Notes
Verify the specific suffix against official Microchip documentation to confirm package type and temperature grade. Confirm RoHS compliance status through current datasheets. Check for moisture sensitivity levels prior to surface mount assembly. Ensure ESD handling protocols are followed during procurement and storage.
Selection Notes
Select this component when applications require significant program storage alongside low-power efficiency. The 384 kB Flash supports complex software stacks and larger datasets compared to smaller variants. The integrated DMA and event system reduce CPU load, improving real-time performance in signal processing tasks.
Part Context
This part belongs to the AVR XMEGA D3 family, designed for compatibility across the series. It utilizes Microchip's picoPower technology to maintain consistent low-power characteristics regardless of memory size. The architecture allows scaling from small to large MCUs without sacrificing battery life in sleep modes.
Replacement Considerations
Consult official substitution lists for verified equivalents. Cross-referencing with other D3 series members requires checking pinout and peripheral differences.
