CYAT81688-100AA77Z

Touch Screen Controllers Overview

The Infineon Technologies CYAT81688-100AA77Z is a capacitive touchscreen controller within the TrueTouch Standard Class TC3 family. It integrates an Arm Cortex CPU for advanced signal processing and gesture recognition. The device supports I2C and SPI interfaces with a 32-bit resolution. Operating voltage ranges from 1.71 V to 5.5 V, with a typical operating current of 20 mA. It functions between -40°C and +85°C in a TQFP-100 package.

Touch Screen Controllers Feature Summary

• Integrates Arm Cortex CPU for programmable gesture detection
• Supports I2C and SPI communication interfaces
• Includes four dedicated ADC inputs for sensor configuration
• Operates on supply voltages from 1.71 V to 5.5 V

Touch Screen Controllers Applications

• Smartphone and tablet capacitive touch panels
• Industrial control panels requiring gesture support
• Automotive infotainment systems

Touch Screen Controllers Procurement Notes

Verify RoHS compliance status through official datasheets before integration. Confirm moisture sensitivity levels for proper storage and reflow soldering profiles. Ensure the TQFP-100 footprint matches the PCB layout design requirements.

Touch Screen Controllers Selection Notes

Select this model for designs requiring integrated processing capabilities rather than simple coordinate reporting. Compare against CYAT81688-100AS77Z if extended temperature range up to +105°C is required. Verify interface compatibility with the host microcontroller.

Touch Screen Controllers Part Context

This component belongs to the CYAT81688 series of TrueTouch controllers. It serves as a specialized input device handler, replacing discrete touch solution architectures by combining sensing, processing, and interface logic in a single IC.

Touch Screen Controllers Replacement Considerations

CYAT81688-100AS77Z offers identical functionality with an extended maximum operating temperature of +105°C compared to the +85°C limit of the AA suffix variant.