ATMXT540E-CCUR

Overview

The ATMXT540E-CCUR is a capacitive touch controller from the maXTouch family, manufactured by Microchip Technology. It features a 540-channel architecture designed for high-performance touch sensing applications. The device operates with a supply voltage range of 1.8 V to 3.3 V and supports I2C interface communication. It provides a 12-bit resolution for touch data processing. The component is rated for industrial temperature ranges, functioning between -40°C and +105°C. It utilizes a surface-mount package suitable for automated assembly processes.

Feature Summary

• Supports up to 540 channels for complex touch interfaces
• Integrates advanced noise rejection capabilities
• Features self-calibration and auto-tuning functions

Applications

• Industrial control panels requiring robust touch input
• Medical equipment interfaces demanding reliability
• Automotive infotainment systems operating in wide temperature ranges

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels due to availability constraints. Confirm RoHS compliance status and specific revision markings on the package. Check for obsolescence notices as the part may be discontinued. Ensure storage conditions meet humidity sensitivity level requirements prior to reflow soldering.

Selection Notes

Select this controller for designs requiring extensive channel counts beyond standard single-touch ICs. Evaluate system power budget against the 1.8V to 3.3V operating range. Consider the I2C interface compatibility with the host microcontroller. Assess thermal management needs given the +105°C maximum operating temperature rating.

Part Context

This component belongs to the Atmel (now Microchip) maXTouch series, which integrates touch sensing, gesture recognition, and button functionality into a single chip. The ATMXT540E variant specifically addresses high-density application needs. It replaces older discrete touch solutions by combining sensor driver and processor cores on one die.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify cross-references with Microchip's official obsolescence notices or current portfolio recommendations for equivalent channel count controllers.