CYAT81688-100AA71

Touch Screen Controllers Overview

The CYAT81688-100AA71 is a capacitive touchscreen controller from Infineon Technologies, part of the TrueTouch Standard TS3xxx family. It integrates a PSOC-based architecture for high-performance touch sensing. The device operates within a supply voltage range of 1.71 V to 5.5 V and supports CMOS input types. It features a 32-bit resolution and includes four ADC inputs for enhanced signal processing. Communication with host processors is facilitated through standard I2C and SPI interfaces. The component is housed in a TQFP-100 package suitable for surface-mount assembly.

Touch Screen Controllers Feature Summary

• Integrated PSOC-based architecture for advanced touch processing
• Supports I2C and SPI communication interfaces
• Includes four dedicated ADC inputs for sensor signals
• Operates on supply voltages between 1.71 V and 5.5 V

Touch Screen Controllers Applications

• Smartphones and mobile devices requiring multi-touch support
• Tablets and portable computing devices
• Industrial control panels with capacitive overlays
• Automotive infotainment systems

Touch Screen Controllers Procurement Notes

Verify the specific suffix AA71 against the official datasheet to confirm the operating temperature range and packaging type. The standard industrial grade variant typically supports -40°C to +105°C. Confirm moisture sensitivity levels and reflow soldering profiles prior to assembly. Ensure ordering quantities align with the manufacturer's tray packaging requirements.

Touch Screen Controllers Selection Notes

Select this model when a robust PSOC-based solution with integrated analog front-end capabilities is required. The inclusion of four ADC inputs allows for direct connection of multiple sensor channels without external multiplexers. Verify that the host system supports the necessary I2C or SPI protocols. Consider the TQFP-100 footprint constraints during PCB layout design.

Touch Screen Controllers Part Context

This component belongs to the Infineon TrueTouch Standard TS3xxx series, designed for high-reliability touch applications. The CYAT81688 designation indicates a specific configuration within the family, distinguished by its pin count and interface options. It serves as a direct replacement for previous generation controllers in designs requiring updated firmware compatibility and improved noise immunity.

Touch Screen Controllers Replacement Considerations

Direct substitutes include other variants within the CYAT81688 family, such as CYAT81688-100AS71, provided the package and interface requirements match. Cross-model replacements may require firmware adjustments due to differences in internal register maps. Always verify pin-to-pin compatibility before substituting.