ATMXT2912TD-ABRVA3

Overview

The ATMXT2912TD-ABRVA3 is an automotive-grade capacitive touchscreen controller from Microchip Technology, designed for large ultra-wide displays in electric vehicles and advanced driver assistance systems. It supports up to 2911 nodes with a maximum of 41 X (transmit) lines and 71 Y (receive) lines. The device operates within a temperature range of –40°C to +105°C and features I²C and SPI interfaces. It provides 16 concurrent touch tracking, AEC-Q100 qualification, and CISPR 25 compliance.

Feature Summary

• AEC-Q100 qualified for Grade 2 (-40°C to +105°C) with CISPR 25 compliance
• Supports up to 2911 nodes using 41 X and 71 Y lines
• Tracks up to 16 concurrent touches with <20 ms initial latency
• Includes moisture compensation for water drops up to 22 mm diameter

Applications

• Electric vehicle (EV) ultra-wide display systems
• Advanced driver assistance systems (ADAS)
• High-end automotive infotainment screens

Procurement Notes

Verify the 'R' suffix indicates tape and reel packaging versus tray options. Confirm firmware revision 5.0.AA compatibility with existing system configurations. Ensure the LQFP-176 package dimensions align with PCB layout requirements. Check for specific automotive grade certifications if required by the final assembly standards.

Selection Notes

Select this model for applications requiring high node counts and wide aspect ratio support. The Grade 2 temperature rating suits harsh automotive environments. Consider the 176-lead LQFP package for its pin density. Verify interface speed requirements against the supported I²C and SPI modes.

Part Context

This component belongs to the maXTouch MXT2912TD series, specifically the AB variant optimized for automotive use. It utilizes Microchip's patented charge-transfer acquisition engine. The part integrates adaptive sensing technology to handle complex sensor patterns and display noise.

Replacement Considerations

Direct replacements must match the 176-lead LQFP package and AEC-Q100 Grade 2 qualification. Verify firmware version compatibility when substituting other MXT2912TD variants. Ensure the replacement supports the same X/Y line count and interface protocols.

FAQ

What is the maximum number of concurrent touches supported?

The device supports up to 16 concurrent touches tracked in real time.

Does the controller support curved sensors?

Yes, it works with PET or glass including curved profiles, subject to configuration and stack-up approval.

What is the operating temperature range?

The operating temperature range is –40°C to +105°C (Grade 2).