ATMXT144U-MAU025

Overview

The ATMXT144U-MAU025 is a Microchip Technology maXTouch U Series touchscreen controller IC designed for high-performance capacitive sensing applications. It features a unique charge-transfer acquisition engine to implement patented capacitive sensing technology, supporting up to 144 nodes. The device operates with I2C and SPI interfaces and is housed in a 38-pin XQFN package. It supports supply voltages ranging from 3.14 V to 3.47 V and functions within an operating temperature range of -40°C to +105°C. The component is RoHS compliant and suitable for surface-mount installation.

Feature Summary

• Utilizes a unique charge-transfer acquisition engine for patented capacitive sensing
• Supports up to 144 touch nodes for complex interface requirements
• Offers dual communication interface options including I2C and SPI
• Designed for robust operation across extended industrial temperature ranges

Applications

• Automotive industry displays
• Industrial control panels
• Consumer electronics touch interfaces

Procurement Notes

Verify the specific suffix MAU025 against official Microchip documentation to confirm package type and tape-and-reel specifications. Ensure compatibility with system voltage levels between 3.14 V and 3.47 V. Confirm humidity sensitivity handling procedures during storage and assembly. Cross-reference the 38-XQFN footprint with PCB design guidelines.

Selection Notes

Select this controller for designs requiring high node counts up to 144 with flexible interface options. Consider the extended temperature range for automotive or industrial environments. Evaluate the XQFN-38 package size against available board space. Verify that the host processor supports the required I2C or SPI protocols for data communication.

Part Context

This component belongs to the maXTouch U Series, which integrates advanced sensing algorithms into a single chip. The series is engineered to provide reliable touch detection in various environmental conditions. The ATMXT144U variant specifically targets applications needing extensive input channels while maintaining low power consumption and high noise immunity.

Replacement Considerations

Consult Microchip's official obsolescence notices and cross-reference tools for direct substitutes. Verify pinout compatibility and software configuration file availability when considering alternative part numbers within the maXTouch family.