ATMXT1066TD-NHU002

Overview

The ATMXT1066TD-NHU002 is a maXTouch touchscreen controller utilizing a charge-transfer acquisition engine for capacitive sensing. It supports up to 41 X and 26 Y lines, allocating a maximum of 1066 nodes. The device operates within an industrial temperature range of -40°C to +85°C. Power specifications include a nominal 3.3V digital supply (Vdd), 1.8V to 3.3V I/O (VddIO), and 3.3V analog supply (AVdd). An internal voltage pump provides high-voltage X line drive at 6.6V or 9.9V. Communication interfaces include I2C with support for Standard, Fast, Fast-mode Plus, and High Speed modes.

Feature Summary

• Supports up to 16 concurrent touches with a typical report rate of ≥85 Hz and initial touch latency <20 ms.
• Integrated moisture compensation prevents false touches from condensation or water drops up to 22 mm diameter.
• Features noise suppression technology capable of handling up to 240 V PP ambient noise between 1 Hz and 1 kHz.
• Includes lens bending algorithms and palm recovery features to remove display noise and unintentional large touches.

Applications

• On-cell and touch-on-display implementations for TFT, LCD, and OLED panels.
• Discrete sensor applications using glass or PET film-based sensors.
• Devices requiring dual-boot OS support for Microsoft Windows and Android.
• Applications necessitating stylus support with passive inputs.

Procurement Notes

Verify the package type matches the specific suffix; NHU indicates a non-HDI UFBGA package. Confirm that the industrial grade (-40°C to +85°C) meets the operational requirements, as this variant is not suitable for automotive characterization. Ensure the design utilizes the correct 117-ball UFBGA footprint dimensions of 9.5 × 7 × 0.65 mm.

Selection Notes

Select this component when a high node count (up to 1066) is required for larger displays, such as 12.4-inch panels. Choose the NHU suffix if a non-HDI package is preferred over the C2U HDI variant. Consider the integrated voltage pump if external high-voltage generation is undesirable. Verify interface compatibility with I2C or HID-I2C protocols before finalizing the selection.

Part Context

This part belongs to the mXT1066TD 1.0 series within Microchip's maXTouch family. It is designed for high-performance capacitive sensing solutions. The device is distinct from other variants by its specific package configuration and industrial temperature rating. It serves as a core controller for multi-touch interfaces in consumer electronics and industrial displays.

Replacement Considerations

The ATMXT1066TD-C2U001 is a compatible alternative offering identical functionality but housed in a 114-ball HDI UFBGA package. Designers must account for the pinout differences and physical footprint changes when switching between the NHU and C2U packages.