ATMXT640U-CCUR023

Overview

The ATMXT640U-CCUR023 is an industrial-grade sample of the maXTouch 640-node touchscreen controller, manufactured by Microchip Technology. It utilizes a charge-transfer acquisition engine to measure, classify, and track up to 16 concurrent touches with high accuracy. The device supports both mutual and self-capacitance measurements for robust touch detection across various sensor types, including on-cell and discrete glass or PET films. It operates within a temperature range of –40°C to +85°C and features I2C-compatible slave mode interfaces.

Feature Summary

• Supports up to 32 X (transmit) lines and 20 Y (receive) lines, allocating a maximum of 640 nodes for touchscreen applications.
• Tracks up to 16 concurrent touches in real time with a typical report rate of 100 Hz for 10 touches.
• 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 Vpp between 1 Hz and 1 kHz.

Applications

• Development of capacitive touchscreen interfaces for displays up to 8.17 inches.
• Integration with Microsoft Windows and Android operating systems via dual-boot support.
• Applications requiring glove support for single-finger touches up to 5 mm thickness.
• Systems utilizing passive stylus input with 1 mm contact diameter.

Procurement Notes

Verify that the specific ordering suffix 'R' indicates tape and reel packaging rather than standard tube or tray supply. Confirm that this part number represents an industrial grade sample which is explicitly noted as not suitable for automotive characterization. Ensure compatibility with the required 88-ball UFBGA footprint during procurement planning.

Selection Notes

Select this component when designing systems requiring up to 640 sensing nodes and multi-touch capabilities. Ensure the design accommodates the 88-ball UFBGA package dimensions of 6 × 6 × 0.6 mm. Verify that the application environment falls within the specified –40°C to +85°C operating temperature range and does not require automotive qualification.

Part Context

This component belongs to the maXTouch family of touchscreen controllers, specifically the mXT640U series. It is designed to work with various front panel materials including glass and plastic overlays. The device integrates advanced algorithms for palm recovery and lens bending to enhance user experience in modern display environments.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Consider evaluating other members of the maXTouch family if node count or package requirements differ, ensuring interface and performance specifications remain compatible.