ATMXT2113TD-ATVA1

Overview

The ATMXT2113TD-ATVA1 is an automotive-grade maXTouch touchscreen controller utilizing a charge-transfer acquisition engine for capacitive sensing. It supports up to 2112 X/Y nodes, enabling dual touchscreens or combined sensor arrays with 16 concurrent multi-touch tracking. The device operates at digital and analog voltages of 3.3V nominal, 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). It functions within a temperature range of –40°C to +85°C and is housed in a 144-lead LQFP package.

Feature Summary

• Supports up to 2112 nodes for two separate touchscreens, key arrays, or sliders.
• Tracks up to 16 concurrent touches with report rates up to 141 Hz.
• Includes hover detection (up to 20 mm), palm recovery, and lens bending algorithms.
• AEC-Q100 qualified and developed following Automotive SPICE Level 3 processes.

Applications

• Automotive instrument clusters and infotainment displays
• Multi-touch slider implementations in vehicle dashboards
• On-cell or touch-on-display integration for TFT, IPS, and OLED panels

Procurement Notes

Verify the ordering suffix 'VA1' corresponds to the Grade 3 temperature range (–40°C to +85°C) and tray packaging as specified in the product identification system. Confirm that the specific firmware revision 2.0.AA matches the target application requirements before procurement.

Selection Notes

Select this component when designing systems requiring support for multiple independent touch sensors or large electrode counts exceeding standard single-panel limits. Ensure the host processor supports the required I2C or SPI interface speeds and that the power supply can accommodate the 8.5V maximum drive voltage for the X lines.

Part Context

This part belongs to the mXT2113TD-AT/AB 2.0 series, which implements Microchip’s patented capacitive sensing method. The 'AT' designation indicates the Grade 3 temperature variant, distinct from the 'AB' Grade 2 version. It is designed for robust operation in electrically noisy automotive environments compliant with CISPR 25 standards.

Replacement Considerations

The ATMXT2113TD-ATRVA1 serves as a functional equivalent supplied in tape and reel instead of trays. Other maXTouch controllers may require significant schematic and firmware modifications due to differences in node counts and pin configurations.

FAQ

What is the maximum number of concurrent touches supported?

The controller supports up to 16 concurrent touches tracked in real time on a single touchscreen instance.

Does the device support hover detection?

Yes, it supports one-finger hover detection up to 20 mm and a tracking range of 15 mm, as well as multiple finger hover detection.

What are the available communication interfaces?

The device supports I2C slave mode (Standard, Fast, Fast-mode Plus up to 1 MHz) and SPI slave mode (up to 8 MHz).