CYAT81688-100AA71T

Touch Screen Controllers Overview

The CYAT81688-100AA71T is a capacitive touchscreen controller from Infineon Technologies, part of the TrueTouch Standard family. It operates within a supply voltage range of 1.71 V to 5.5 V and supports I2C and SPI interfaces. The device features a 32-bit resolution and functions at temperatures between -40°C and +85°C. Designed for high-performance touch sensing, it utilizes CMOS input technology and is housed in a TQFP package with a reel factory packaging quantity of 1500 units.

Touch Screen Controllers Feature Summary

• Capacitive Touchscreen Controller
• I2C and SPI Interface Support
• 32-bit Resolution
• -40°C to +85°C Operating Temperature Range

Touch Screen Controllers Applications

• Smartphones and Mobile Devices
• Tablets and Portable Electronics
• Automotive Infotainment Systems
• Industrial Control Panels

Touch Screen Controllers Procurement Notes

Verify the specific suffix AA71T against official datasheets to confirm package type and tape/reel specifications. Confirm RoHS compliance status through manufacturer documentation before procurement. Ensure ordering multiples align with the standard factory pack size of 1500 units to avoid partial reel handling issues.

Touch Screen Controllers Selection Notes

Select this component when a robust capacitive touch solution with flexible interface options (I2C/SPI) is required. Ensure the system power supply accommodates the 1.71V to 5.5V operating range. Verify that the PCB layout supports the TQFP package dimensions and thermal requirements for the specified temperature range.

Touch Screen Controllers Part Context

This part belongs to the Infineon TrueTouch Standard series, designed for high-sensitivity touch applications. It integrates advanced noise rejection algorithms and gesture support capabilities typical of the family. The CYAT81688 variant specifically targets multi-touch interactions with high reliability in electrically noisy environments.

Touch Screen Controllers Replacement Considerations

Check for direct pin-to-pin replacements within the CYAT8168x series or newer TrueTouch generations. Verify software compatibility if migrating from older controllers, as register maps may differ. Consult Infineon's obsolescence notices for long-term supply chain stability.