ATMXT144UD-AMBI2CVAO

Overview

The ATMXT144UD-AMBI2CVAO is a maXTouch touchscreen controller manufactured by Microchip Technology. It supports up to 144 nodes and features I2C and SPI communication interfaces. The device operates within a supply voltage range of 3.14 V to 3.47 V. It is designed for surface mount installation in a VQFN-56 package. The component functions across an extended temperature range from -40°C to +105°C, suitable for automotive applications.

Feature Summary

• Supports up to 144 touch nodes
• Dual interface support: I2C and SPI
• Automotive grade qualification (AEC-Q100)
• VQFN-56 surface mount package

Applications

• Automotive infotainment systems
• Vehicle instrument clusters
• In-car touchscreen displays

Procurement Notes

Verify the specific suffix 'AMBI2CVAO' against official Microchip documentation to confirm interface configuration and automotive compliance status. Ensure compatibility with system power rails operating between 3.14 V and 3.47 V. Confirm package dimensions match the VQFN-56 footprint requirements during PCB layout design.

Selection Notes

Select this component when a high-node-count touchscreen solution is required for automotive environments. The I2C/SPI interface options provide flexibility for different host controller connections. Ensure the application requires operation at temperatures up to +105°C and fits within the specified voltage constraints.

Part Context

This part belongs to the maXTouch MXT UD series, which is optimized for automotive display applications. It integrates touch sensing capabilities directly into the controller, reducing external component count compared to discrete solutions. The series is designed to meet functional safety standards relevant to automotive electronics.

Replacement Considerations

Check Microchip's official cross-reference tools for direct replacements. Verify that any substitute maintains the same node count, package type, and automotive qualification level.