CYAT817AZS88-42002

Touch Screen Controllers Overview

The CYAT817AZS88-42002 is an automotive-grade, multitouch capacitive touchscreen controller from Infineon's PSoC Automotive Generation 7XL family. It features a 32-bit Arm Cortex CPU and supports up to 88 sense pins with ten-finger tracking. The device operates within a supply voltage range of 1.71 V to 5.5 V and functions in ambient temperatures from -40°C to 105°C (Automotive-S). Key capabilities include hover sensing, water rejection, wet-finger tracking, and glove support. It integrates noise-suppression technologies for display and EMI, along with auto armor technology to improve electromagnetic emissions and immunity.

Touch Screen Controllers Feature Summary

• Supports up to 88 sense pins with ten-finger multitouch tracking and hover sensing up to 35 mm
• Includes advanced environmental handling such as water rejection, wet-finger tracking, and automatic baseline tracking
• Features integrated DSP for faster scanning and low-noise data processing
• Provides I2C and SPI communication interfaces with optional cryptographic engine support

Touch Screen Controllers Applications

• Automotive infotainment systems requiring high reliability and noise immunity
• Vehicle instrument clusters and dashboard displays
• Center console touch interfaces with glove or wet-hand operation requirements

Touch Screen Controllers Procurement Notes

Verify the specific ordering suffix 'S' indicates the Automotive-S temperature range (-40°C to 105°C) compared to the 'A' variant. Confirm package availability in 128LD TQFP format. Ensure firmware compatibility with Android driver support if applicable. Check for required external components for power regulation and sensor interfacing.

Touch Screen Controllers Selection Notes

Select this model when 88 sense pins are sufficient for the screen geometry. Choose over 'A' variants if operating temperatures exceed 85°C. Verify that the lack of Force Touch and CAPSENSE buttons aligns with system design needs. Consider the 128LD TQFP package dimensions for PCB layout constraints.

Touch Screen Controllers Part Context

This component belongs to the CYAT817X series, designed specifically for automotive applications. It shares the core Generation 7XL architecture with other variants like CYAT817AZA88-42002 but differs in temperature rating and feature set configuration. The 'S' suffix denotes the extended temperature range suitable for harsh automotive environments.

Touch Screen Controllers Replacement Considerations

Direct replacements within the same package and pinout include CYAT817AZA88-42002 for lower temperature ranges or CYAT817AZS88-52002 for enhanced features. Cross-family migration requires re-evaluation of firmware and hardware interfaces.