ATXMEGA64A1U-C7UR

Overview

The ATXMEGA64A1U-C7UR is an 8/16-bit microcontroller from the AVR XMEGA A1U family, manufactured by Microchip Technology. It features a 64KB in-system self-programmable flash memory, 2KB EEPROM, and 4KB internal SRAM. The device operates within a supply voltage range of 1.6V to 3.6V and supports a maximum clock frequency of 32MHz. It utilizes a 100-ball VFBGA package (100C2) with dimensions of 7x7x1.0mm body and a 0.65mm ball pitch. Key peripherals include a four-channel DMA controller, eight-channel event system, one USB 2.0 full-speed interface, eight USARTs, four TWIs, four SPIs, two 16-channel 12-bit ADCs, and two 2-channel 12-bit DACs.

Feature Summary

• Integrates a high-performance AVR enhanced RISC CPU capable of executing instructions in a single clock cycle for optimized power consumption versus processing speed.
• Includes a dedicated AES and DES cryptographic engine alongside CRC-16 and CRC-32 generators for secure data handling.
• Features a four-channel Direct Memory Access (DMA) controller and an eight-channel event system for efficient peripheral-to-peripheral communication without CPU intervention.
• Supports capacitive touch sensing through QTouch library integration for buttons, sliders, and wheels.

Applications

• Industrial control systems
• Building control automation
• USB connectivity devices
• Sensor control applications

Procurement Notes

Verify the specific ordering suffix C7UR corresponds to the 100-ball VFBGA package and tape-and-reel packaging format as documented in the official Microchip datasheet. Confirm that the component meets RoHS compliance and halide-free requirements specified for this product line. Ensure compatibility with the required operating temperature range of -40°C to +85°C for the intended application environment.

Selection Notes

Select this model when a 64KB flash capacity is sufficient for the application firmware. Choose the VFBGA package if board space constraints require a compact 7x7mm footprint. Consider the 1.6V minimum supply voltage for battery-powered designs requiring low-voltage operation. Verify that the 78 available programmable I/O pins meet the interface requirements for sensors and actuators.

Part Context

This component belongs to the AVR XMEGA A1U series, which provides a balance of high performance and low power consumption. The A1U family is designed for applications requiring rich peripheral integration and flexible connectivity options. It shares architectural similarities with other XMEGA variants but offers specific memory sizes and package options tailored for cost-sensitive and space-constrained embedded designs.

Replacement Considerations

The ATXMEGA64A1U-C7U is a tray-packaged equivalent with identical electrical specifications. The ATXMEGA64A1U-AU offers the same core functionality in a 100-lead TQFP package. Substitution requires verifying package pinout compatibility and ensuring the alternative packaging format meets assembly requirements.