ATMXT1066TD-NHU001

Overview

The ATMXT1066TD-NHU001 is a maXTouch touchscreen controller utilizing a charge-transfer acquisition engine for high-accuracy multi-touch tracking. It supports up to 41 X and 26 Y lines, allocating a maximum of 1066 nodes for sensor electrodes. The device operates within an industrial temperature range of -40°C to +85°C and features I2C, HID-I2C, and SPI interfaces. Power requirements include nominal voltages of 3.3V for digital/analog supplies and 1.8V to 3.3V for I/O. It is housed in a 117-ball UFBGA package measuring 9.5 x 7 mm with a 0.65 mm pitch.

Feature Summary

• Supports up to 16 concurrent touches with a typical report rate of ≥85 Hz and initial latency <20 ms.
• Integrated moisture compensation prevents false touches from condensation or water drops up to 22 mm diameter.
• Includes lens bending algorithms to remove display noise and palm recovery algorithms for rapid state restoration.
• Features automatic touch sensor diagnostics during runtime to support safety-critical feature implementation.

Applications

• On-cell and touch-on-display implementations for TFT, LCD (ITPS, IPS), and OLED panels.
• Discrete or out-cell sensor applications using glass or PET film-based sensors.
• Systems requiring dual-boot OS support for Microsoft Windows and Android environments.

Procurement Notes

Verify the specific ordering suffix against the manufacturer's product identification system to confirm packaging type. The NHU suffix indicates a non-HDI 117-ball UFBGA package supplied in trays. Confirm that the industrial grade (-40°C to +85°C) meets the operational requirements, as this component is not suitable for automotive characterization.

Selection Notes

Select this controller for designs requiring up to 1066 sensor nodes and support for both mutual and self-capacitance measurements. Ensure the host system provides the required 3.3V analog/digital supply and 1.8V to 3.3V I/O voltage. Consider the 117-ball UFBGA footprint constraints and verify compatibility with the intended display stack-up and front panel materials.

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 integrates a dedicated CPU and patented sensing method to classify and track finger touches efficiently.

Replacement Considerations

ATMXT1066TD-C2U001: Offers identical functionality but utilizes a 114-ball UFBGA package instead of the 117-ball variant.