CYAT81685-128AA88Z

Touch Screen Controllers Overview

The CYAT81685-128AA88Z is a capacitive touchscreen controller from Infineon Technologies, part of the TrueTouch Gen7XL family. It integrates an Arm Cortex CPU for on-chip processing of touch and acoustic feedback. The device supports I2C and SPI interfaces with a 32-bit resolution. It operates within a supply voltage range of 1.71 V to 5.5 V and draws 20 mA during operation. Designed for industrial applications, it functions between -40°C and +85°C. The component is housed in a TQFP-128 package and includes four ADC inputs.

Touch Screen Controllers Feature Summary

• Integrates Arm Cortex CPU for advanced touch and acoustic signal processing
• Supports I2C and SPI communication interfaces
• Operates on supply voltages from 1.71 V to 5.5 V
• Includes four dedicated ADC inputs

Touch Screen Controllers Applications

• Industrial control panels requiring robust touch input
• Automotive infotainment systems with acoustic feedback integration
• HMI devices operating in extended temperature environments

Touch Screen Controllers Procurement Notes

Verify the specific suffix 'AA88Z' against official Infineon documentation to confirm the commercial grade temperature rating (+85°C) versus the industrial variant. Ensure compatibility with required packaging formats, as datasheets may indicate tray packaging. Confirm RoHS compliance status directly with the manufacturer or authorized distributors before procurement.

Touch Screen Controllers Selection Notes

Select this model when an integrated processor is needed for complex gesture recognition or haptic feedback control. The TQFP-128 package requires appropriate PCB footprint design. Verify that the host system supports the required 1.71 V to 5.5 V power rails and that the interface protocol (I2C/SPI) matches the microcontroller configuration.

Touch Screen Controllers Part Context

This component belongs to the CYAT81685 series, representing Infineon's TrueTouch Next Generation XL controllers. These devices are engineered for high-performance human-machine interfaces, combining sensing capabilities with computational power to reduce latency and improve user experience in demanding environments.

Touch Screen Controllers Replacement Considerations

The CYAT81685-128AS88Z serves as a functional alternative within the same series, differing primarily in the maximum operating temperature rating (105°C vs 85°C). Both share identical pinouts and core specifications.