CYAT81688-100AS71T

Touch Screen Controllers Overview

The CYAT81688-100AS71T is a capacitive touchscreen controller from Infineon Technologies, part of the TrueTouch family. It operates within an extended temperature range of -40°C to +105°C and utilizes a TQFP-100 surface-mount package. The device supports CMOS input types with up to 32-bit resolution and offers I2C and SPI interface options. Maximum supply voltage is rated at 5.5 V, with a minimum of 1.71 V. Operating current reaches up to 20 mA. Designed for automotive environments, it meets AEC-Q100 qualification standards.

Touch Screen Controllers Feature Summary

• Capacitive touchscreen controller with TrueTouch technology
• AEC-Q100 qualified for automotive reliability
• Extended operating temperature range (-40°C to +105°C)
• Supports I2C and SPI communication interfaces

Touch Screen Controllers Applications

• Automotive infotainment systems
• Vehicle instrument clusters
• Center stack control panels

Touch Screen Controllers Procurement Notes

Verify the specific ordering suffix AS71T against the official datasheet to confirm package type and tape-and-reel specifications. Confirm moisture sensitivity levels and recommended reflow soldering profiles prior to assembly. Ensure compliance with RoHS directives as indicated in manufacturer documentation.

Touch Screen Controllers Selection Notes

Select this component when automotive-grade capacitive touch sensing is required with support for both I2C and SPI protocols. The TQFP-100 package provides sufficient pin count for larger touch panels. Verify that the system power supply aligns with the 1.71 V to 5.5 V operating range and that thermal management supports the +105°C maximum junction temperature.

Touch Screen Controllers Part Context

This part belongs to the Infineon CYAT81688 series of TrueTouch controllers. These devices are engineered specifically for high-performance capacitive touch applications in demanding environments. The series integrates advanced signal processing algorithms to ensure reliable touch detection under various conditions.

Touch Screen Controllers Replacement Considerations

Consult the official Infineon replacement guide for verified cross-reference parts. Ensure any substitute maintains AEC-Q100 qualification and compatible interface protocols.