ATMXT2113TD-ATRVA1

Overview

The ATMXT2113TD-ATRVA1 is an automotive-grade capacitive touchscreen controller from Microchip Technology, designed for high-performance multi-touch applications. It features a charge-transfer acquisition engine supporting up to 2112 X/Y nodes and simultaneous tracking of 16 fingers. The device operates within a temperature range of -40°C to +85°C and utilizes a 144-lead LQFP package. Electrical specifications include nominal 3.3V supplies for digital, I/O, and analog sections, with an external high-voltage drive (XVdd) up to 8.5V. Communication interfaces include I2C (up to 1 MHz) and SPI (up to 8 MHz).

Feature Summary

• Supports up to 2112 nodes across two touchscreens, key arrays, or sliders.
• Tracks up to 16 concurrent touches with report rates exceeding 120 Hz for ten fingers.
• Includes moisture compensation for water drops up to 22 mm and hover detection up to 20 mm.
• Features AEC-Q100 qualification and Automotive SPICE Level 3 development processes.

Applications

• Automotive infotainment systems requiring robust multi-touch interaction.
• Industrial control panels needing palm rejection and glove operation support.
• Displays with glass thicknesses up to 10 mm or PMMA up to 5 mm.

Procurement Notes

Verify the 'R' suffix in the part number confirms tape and reel packaging rather than standard trays. Confirm the operating temperature grade corresponds to the specific application requirements, as this variant is rated for Grade 3 (-40°C to +85°C). Ensure the host system supports the required 3.3V logic levels and provides the necessary XVdd voltage for external line driving.

Selection Notes

Select this controller for designs requiring high node counts and advanced gesture recognition. Consider the 144-lead LQFP footprint when designing the PCB land pattern. Evaluate the need for self-capacitance augmentation if using non-standard sensor materials or complex geometries. Verify that the host processor can handle the maximum SPI clock speed of 8 MHz or I2C Fast-mode Plus speeds.

Part Context

This component belongs to the maXTouch Adaptive Sensing Touchscreen Technology family. It is specifically the Grade 3 version of the mXT2113TD, distinguished by its extended temperature range compared to Grade 2 variants. The 'ATRVA1' designation indicates the specific package type, temperature grade, and manufacturing revision.

Replacement Considerations

The ATMXT2113TD-ATVA1 serves as the tray-packaged equivalent. For higher temperature grades, the ATMXT2113TD-AB series is available. Cross-model compatibility depends on firmware configuration and pinout alignment within the maXTouch family.

FAQ

What is the maximum screen size supported?

The controller supports a maximum touchscreen size of 15.49 inches with a 2:1 aspect ratio, assuming a 5.5 mm electrode pitch.

Does the device support glove operation?

Yes, it supports multi-finger operation through 6 mm glass or 3 mm PMMA, equivalent to 5 mm gloves.

How does the controller handle water interference?

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