ATMXT2952TD-C2UMK1

Overview

The ATMXT2952TD-C2UMK1 is a maXTouch touchscreen controller featuring a charge-transfer acquisition engine for high-accuracy multi-touch tracking. It supports up to 41 X and 71 Y lines, allocating a maximum of 2911 nodes for sensor arrays. The device operates with a nominal digital supply (Vdd) of 3.3V, I/O voltage (VddIO) ranging from 1.8V to 3.3V in I2C mode, and an analog supply (AVdd) of 3.3V. It interfaces via I2C or USB HID and functions within an operating temperature range of –40°C to +85°C.

Feature Summary

• Supports up to 16 concurrent touches with a typical report rate ≥110 Hz and initial touch latency <20 ms.
• Integrates moisture compensation for reliable operation with water drops up to 22 mm diameter.
• Includes enhanced algorithms for lens bending noise removal, palm recovery, and adjacent key suppression.
• Features encrypted configuration parameters and touch coordinate reports using customer-defined security keys.

Applications

• On-cell and touch-on-display implementations for OLED and LCD panels.
• Discrete out-cell sensors utilizing glass or PET film materials.
• Systems requiring passive stylus support with 1.5 mm contact diameter.
• Applications necessitating compliance with Microsoft Windows 10 HID standards.

Procurement Notes

Verify the specific ordering suffix against Microchip documentation to confirm package type and tape/reel options. The 'MK1' suffix indicates a specific pattern or variant; ensure this matches design requirements as standard suffixes like 'U' or 'UR' denote different packaging configurations.

Selection Notes

Select this controller for designs requiring up to 2911 sensor nodes and support for non-rectangular sensor geometries. Ensure the host interface aligns with either I2C (up to 3.4 MHz) or USB HID capabilities. Confirm that the system power architecture supports the required 3.3V nominal supplies and external XVdd drive up to 9.2V.

Part Context

This component belongs to the ATMXT2952TD family, representing firmware revision 2.0.AA. It utilizes a 162-ball UFBGA package measuring 10 × 5 × 0.6 mm. The device is part of Microchip's maXTouch series, designed for adaptive sensing technology across various display types.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Consult Microchip sales offices for current availability and alternative recommendations if this specific variant is discontinued or unavailable.

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 passive stylus input?

Yes, it supports passive stylus with a 1.5 mm contact diameter, subject to configuration and sensor design.

How does the device handle moisture 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.