CYAT81688-100AS77Z

Touch Screen Controllers Overview

The CYAT81688-100AS77Z is a capacitive touchscreen controller from Infineon Technologies, part of the TrueTouch family. It integrates an Arm Cortex CPU and supports I2C and SPI interfaces with CMOS input. The device operates within a voltage range of 1.71 V to 5.5 V and consumes 20 mA during operation. It features a 32-bit resolution and includes four ADC inputs. Designed for surface mount installation in a TQFP-100 package, it functions reliably between -40°C and +105°C. The component exhibits moisture sensitivity and is classified under data converter ICs.

Touch Screen Controllers Feature Summary

• Integrated Arm Cortex CPU architecture
• Dual interface support: I2C and SPI
• Wide operating temperature range (-40°C to +105°C)
• Four dedicated ADC inputs

Touch Screen Controllers Applications

• Automotive human-machine interface systems
• Industrial control panels requiring wide temperature tolerance
• Consumer electronics with capacitive touch requirements

Touch Screen Controllers Procurement Notes

Verify RoHS compliance status through official documentation before procurement. Confirm moisture sensitivity level handling requirements for storage and reflow soldering processes. Ensure the TQFP-100 package dimensions match the target PCB footprint design specifications accurately.

Touch Screen Controllers Selection Notes

Select this model when automotive-grade temperature ranges are required alongside integrated processing capabilities. Compare against CYAT81682 variants if lower temperature ratings suffice. Verify interface compatibility with host controllers supporting I2C or SPI protocols for seamless integration into existing system architectures.

Touch Screen Controllers Part Context

This component belongs to the CYAT81688 series, distinguished by its extended industrial temperature rating compared to commercial variants like the CYAT81682. It utilizes the TrueTouch branding for capacitive sensing solutions. The suffix 'S77' typically denotes specific packaging or qualification attributes within the Infineon portfolio structure.

Touch Screen Controllers Replacement Considerations

Direct substitutes include other CYAT81688 series members such as CYAT81688-100AA77Z, provided pinout and electrical parameters remain identical. Cross-reference datasheets to ensure functional equivalence regarding ADC count and interface support before substitution.