ATMXT1066TD-C2U001

Overview

The ATMXT1066TD-C2U001 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 for touch sensors. The device operates with a nominal digital supply (Vdd) of 3.3V, analog supply (AVdd) of 3.3V, and digital I/O (VddIO) ranging from 1.8V to 3.3V. Internal voltage pumps provide high-voltage X line drive at 6.6V or 9.9V. It features I2C interfaces supporting Standard, Fast, Fast-mode Plus, and High Speed modes, alongside an SPI debug interface. The component is housed in a 114-ball UFBGA package measuring 7 × 5 × 0.65 mm and functions within an industrial temperature range of –40°C to +85°C.

Feature Summary

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

Applications

• On-cell and touch-on-display implementations for TFT, LCD, and OLED panels.
• Systems requiring dual-boot OS support for Microsoft Windows and Android.
• Applications using passive stylus input with 1.5 mm contact diameter.

Procurement Notes

Verify the ordering suffix C2U corresponds to the 114-ball UFBGA package and standard tray packaging. Confirm that the industrial grade specification meets the operational temperature requirements of the target environment. Ensure compatibility with the required sensor electrode pitch and stack-up configuration before procurement.

Selection Notes

Select this model for designs requiring up to 1066 touch nodes and multi-touch tracking capabilities. Consider the 114-ball UFBGA footprint constraints during PCB layout. Verify that the host system supports the necessary I2C speeds and interrupt signaling. Evaluate power supply requirements for the internal voltage pump if high drive strength is needed.

Part Context

This part belongs to the Microchip maXTouch TD Series, designed for high-performance capacitive touch solutions. It is distinct from other variants by its specific 114-ball UFBGA package designation (C2U). The device is intended for general industrial applications and is explicitly noted as not suitable for automotive characterization.

Replacement Considerations

The ATMXT1066TD-NHU001 serves as a package alternative, utilizing a 117-ball UFBGA format. Pinout differences exist between the 114-ball and 117-ball packages; hardware redesign may be required when substituting between these form factors.