ATMXT2952TD-C2URMK1

Overview

The ATMXT2952TD-C2URMK1 is a maXTouch TD Series touchscreen controller IC 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 touch sensors or keys. The device operates on a digital supply (Vdd) of 3.3 V nominal, with I/O levels from 1.8 V to 3.3 V in I²C mode and 3.3 V nominal in USB mode. Analog supply (AVdd) is 3.3 V nominal, while the external X line drive (XVdd) reaches up to 9.2 V. It 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 encrypted configuration parameters and touch coordinate reports using customer-defined security keys.
• Includes enhanced algorithms such as lens bending, touch suppression, palm recovery, and adjacent key suppression.
• Offers flexible interface options including I²C (up to 3.4 MHz), HID-I²C, and USB HID.

Applications

• Human-machine interfaces (HMIs) for electric vehicle charging stations and parking payment units requiring PCI security compliance.
• Industrial displays ranging from 12.1 to 23.8 inches utilizing projected capacitive touch technology.
• On-cell and touch-on-display implementations for OLED and LCD panels.

Procurement Notes

Verify the specific ordering suffix against the manufacturer's product identification system to confirm package type, temperature grade, and tape-and-reel status. Ensure compatibility with the required communication protocol, as interface modes are configurable via software settings rather than hardware pins.

Selection Notes

Select this controller for applications requiring robust noise immunity and data encryption. Confirm that the sensor design aligns with the supported electrode pitch and stack-up requirements. Validate that the host system can support the necessary I²C speeds or USB HID protocols for optimal performance.

Part Context

This component belongs to the maXTouch TD Series, designed for mid-to-large size displays. It utilizes Microchip’s patented capacitive sensing method combined with a state-of-the-art CPU to classify and track touches accurately. The series supports both mutual and self-capacitance measurements to enhance reliability.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify pinout and firmware compatibility if considering alternative controllers from the same family.

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 water compensation?

Yes, it provides moisture/water compensation capable of preventing false touches from condensation or water drops up to 22 mm in diameter.

What is the maximum operating voltage for the X line drive?

The high voltage external X line drive (XVdd) can reach up to 9.2 V.