ATMXT1664TD-C2UEN1

Overview

The ATMXT1664TD-C2UEN1 is a maXTouch touchscreen controller featuring a charge-transfer acquisition engine for high-accuracy multi-touch tracking. It supports up to 1664 nodes, configured as 41 X and 71 Y lines, enabling real-time tracking of 16 concurrent touches with a typical report rate of ≥110 Hz. The device operates on a 3.3V digital supply (AVdd) and 1.8V to 3.3V I/O (VddIO), with an external drive voltage (XVdd) up to 9.2V. It integrates I2C and USB HID interfaces, offering moisture compensation, noise suppression, and encrypted data security within a 162-ball UFBGA package.

Feature Summary

• Supports up to 1664 sensor nodes with 41 transmit and 71 receive lines for large display coverage.
• Tracks up to 16 simultaneous touches with initial latency under 20 ms and report rates ≥110 Hz.
• Includes advanced algorithms for water/moisture compensation, palm recovery, and lens bending noise removal.
• Provides secure communication via encrypted configuration parameters and firmware authentication mechanisms.

Applications

• On-cell and touch-on-display implementations for OLED and LCD panels.
• Discrete out-cell sensors using glass or PET film materials.
• Industrial and commercial displays requiring robust multi-touch interaction.
• Applications necessitating stylus support with passive input devices.

Procurement Notes

Verify the specific ordering suffix '1' indicates tray packaging, distinct from the 'R' suffix used for tape and reel options. Confirm that the industrial temperature grade (-40°C to +85°C) meets the operational requirements, as this variant is not suitable for automotive characterization. Ensure compatibility with the required host interface, either I2C or USB HID, during system design.

Selection Notes

Select this component when a high node count (up to 1664) is required for large-format displays. The device supports both mutual and self-capacitance measurements, making it suitable for complex sensor patterns including non-rectangular designs. Consider the 162-ball UFBGA package dimensions (10 × 5 × 0.6 mm) for PCB layout constraints. Verify that the host system can support the necessary I2C speeds (up to 3.4 MHz) or USB HID protocols.

Part Context

This part belongs to the maXTouch family, utilizing patented capacitive sensing technology. The 'TD' designation typically refers to the specific die revision or feature set within the mXT1664 series. The C2 package code identifies the Ultra Thin Fine-pitch Ball Grid Array form factor. Firmware version 2.0.AA is associated with this product brief edition.

Replacement Considerations

The ATMXT1664S-CU is a related variant in the same family but is listed as obsolete. When evaluating alternatives, ensure the replacement supports the required 1664-node capacity and compatible package type. Verify that any substitute maintains the same interface capabilities (I2C/USB) and power supply specifications.