ATXMEGA64D4-MN

Overview

The ATXMEGA64D4-MN is an 8-bit microcontroller from the AVR XMEGA D4 series, manufactured by Microchip Technology. It features a 32 MHz maximum clock frequency and integrates 64 KB of Flash program memory, 2 KB of EEPROM, and 4 KB of SRAM. The device operates within a supply voltage range of 1.6 V to 3.6 V and supports an industrial temperature range of -40°C to +85°C. It is housed in a 44-lead QFN package with 34 available I/O lines. Key peripherals include twelve 12-bit ADC channels, multiple communication interfaces such as SPI, UART/USART, and I2C, along with hardware security features.

Feature Summary

• Integrates picoPower technology for low sleep current consumption while maintaining large memory capacity and fast wake-up times.
• Includes a high-speed DMA controller and event system to offload data transfer and inter-peripheral signaling from the CPU.
• Features a full-speed USB device interface capable of operation using an internal oscillator.
• Provides advanced analog capabilities with a 300 ksps 12-bit ADC and configurable digital peripheral arrays.

Applications

• Battery-powered thermostats requiring extended life and display support
• Building automation and climate control systems
• Utility meters with RF or ZigBee connectivity
• Industrial monitoring devices requiring fast reaction times

Procurement Notes

Verify the specific suffix 'MN' against official Microchip documentation to confirm the exact package type (QFN) and temperature grade. Ensure compatibility with existing PCB footprints for the 44-lead form factor. Confirm that the selected development tools support the AVR XMEGA D4 architecture for proper programming and debugging.

Selection Notes

Select this component when application requirements demand a balance between high processing speed and ultra-low power consumption. The inclusion of a full-speed USB interface makes it suitable for direct host communication without external transceivers. Consider the 12-bit ADC resolution for precision sensing applications where higher accuracy than standard 10-bit controllers provides necessary performance margins.

Part Context

This part belongs to the AVR XMEGA D4 family, which utilizes Microchip's picoPower technology to scale low-power characteristics across different memory sizes. Unlike previous generations, this series allows larger MCUs to achieve sleep currents comparable to smaller devices, optimizing battery life in always-on applications.

Replacement Considerations

Cross-reference with ATXMEGA64D4-AU for TQFP packaging alternatives or ATXMEGA64D4-AUR for tape-and-reel options within the same electrical specifications. Verify pinout compatibility if substituting with other D4 series variants like ATXMEGA32D4 or ATXMEGA128D4.