ATXMEGA64A1-C7UR

Overview

The ATXMEGA64A1-C7UR is an 8/16-bit microcontroller from the AVR XMEGA A1 family. It features 64KB of in-system self-programmable flash, 2KB EEPROM, and 4KB internal SRAM. The device operates on a 1.6V to 3.6V power supply with clock frequencies up to 32MHz at 2.7V or higher. It includes a four-channel DMA controller, eight-channel event system, eight 16-bit timer/counters, four USARTs, four TWIs, and four SPIs. Analog peripherals consist of two 16-channel 12-bit ADCs, two 2-channel 12-bit DACs, and four analog comparators. Security is provided by AES and DES crypto engines. The component is housed in a 100-ball VFBGA package.

Feature Summary

• High-performance 8/16-bit AVR RISC CPU executing instructions in a single clock cycle
• Integrated capacitive touch sensing support via QTouch library
• Advanced peripheral connectivity including multiple serial interfaces and high-resolution timers
• Low-power operation with five selectable sleep modes and fast wake-up capabilities

Applications

• Industrial control systems
• Building and climate control applications
• Utility metering devices
• Medical equipment
• HVAC systems

Procurement Notes

Verify that the specific ordering suffix matches the required package type and temperature range. Confirm compliance with RoHS directives as indicated in official documentation. Ensure design compatibility with the XMEGA A1U series, as this model is marked not recommended for new designs. Validate pinout configurations against the datasheet before finalizing PCB layouts.

Selection Notes

Select this component when existing designs require the specific memory configuration and package style of the XMEGA A1 series. Consider the availability of development tools and libraries such as ASF and QTouch. Evaluate the trade-off between the established A1 architecture and the newer A1U series for future-proofing requirements. Ensure sufficient I/O count and peripheral availability for the target application complexity.

Part Context

This microcontroller belongs to the AVR XMEGA A1 family, designed for high performance and low power consumption. It utilizes Atmel's picoPower technology to maintain low sleep currents regardless of memory size. The family supports read-while-write flash operations and features a rich set of peripherals for complex embedded tasks. It serves as a robust solution for battery-powered applications requiring significant processing power.

Replacement Considerations

Microchip recommends using the XMEGA A1U series for new designs. Verify pin-to-pin compatibility and software migration paths when transitioning from the A1 to the A1U series. Check for any differences in peripheral implementations or electrical characteristics between the generations.