ATMXT1067TD-ABRI2CVAO

Overview

The ATMXT1067TD-ABRI2CVAO is an automotive-grade maXTouch touchscreen controller designed for high-performance capacitive sensing. It supports up to 1066 nodes and tracks up to 16 concurrent touches with a typical report rate of ≥85 Hz. The device operates within a temperature range of –40°C to +105°C (Grade 2) and utilizes I2C communication at speeds up to 1 MHz. Powered by a nominal 3.3 V supply, it features advanced noise suppression, water compensation, and palm recovery algorithms. Packaged in a 128-lead TQFP, this component is AEC-Q100 qualified and developed following Automotive SPICE Level 3 processes.

Feature Summary

• AEC-Q100 Qualified: Designed for automotive applications with compliance to CISPR 25 standards.
• High Node Count: Supports up to 1066 nodes allocated to the touchscreen for large displays.
• Multi-Touch Capability: Tracks up to 16 simultaneous finger touches in real time.
• Advanced Sensing: Includes moisture/water compensation, glove support, and lens bending algorithms.

Applications

• Automotive infotainment systems
• Vehicle instrument clusters
• Rear-seat entertainment displays

Procurement Notes

Verify the specific ordering suffix 'R' confirms tape and reel packaging rather than standard trays. Confirm that the 'AB' designation aligns with the required Grade 2 operating temperature range of –40°C to +105°C for your application environment. Ensure firmware compatibility with version 1.0.AA during integration.

Selection Notes

Select this model when an extended industrial/automotive temperature range up to +105°C is required, distinguishing it from the Grade 3 (-40°C to +85°C) variant. The I2C interface supports Standard, Fast, and Fast-mode Plus speeds. Consider the 128-lead TQFP package constraints for PCB layout and thermal management in enclosed automotive housings.

Part Context

This part belongs to the mXT1067TD-AT/mXT1067TD-AB family. The 'AB' suffix indicates the higher temperature grade compared to the 'AT' variant. The 'R' suffix specifies tape and reel shipping, while 'VAO' denotes RoHS compliance and specific manufacturing origin codes defined by Microchip.

Replacement Considerations

The ATMXT1067TD-ATI2CVAO serves as a functional substitute if the application does not require operation above +85°C. Both parts share identical electrical characteristics and pinouts; the primary difference lies in the specified operating temperature range and associated qualification grades.

FAQ

What is the maximum number of concurrent touches supported?

The controller can track up to 16 concurrent touches in real time.

Does this component support I2C Fast-mode Plus?

Yes, the I2C slave interface supports Standard mode (100 kHz), Fast mode (400 kHz), and Fast-mode Plus (1 MHz).

How does the device handle water interference?

It features moisture/water compensation that prevents false touches from condensation or water drops up to 22 mm in diameter while maintaining one-finger tracking.