CYAT81682-128AA88

Touch Screen Controllers Overview

The Infineon Technologies CYAT81682-128AA88 is a capacitive touchscreen controller within the TrueTouch Standard Class product family. It integrates an Arm Cortex CPU and supports CMOS input with I2C and SPI interfaces. The device operates on a supply voltage ranging from 1.71 V to 5.5 V, drawing approximately 20 mA during operation. It features a 32-bit resolution and includes four ADC inputs for sensor signal processing. Designed for surface-mount applications, it is housed in a TQFP-128 package and functions reliably across a temperature range of -40°C to +85°C.

Touch Screen Controllers Feature Summary

• Integrated Arm Cortex CPU for advanced touch processing
• Dual interface support via I2C and SPI protocols
• Four dedicated ADC inputs for high-resolution sensing
• Wide operating voltage range from 1.71 V to 5.5 V

Touch Screen Controllers Applications

• Capacitive touch panels for consumer electronics
• Industrial control interfaces requiring robust touch response
• Automotive infotainment systems within specified temperature limits

Touch Screen Controllers Procurement Notes

Verify humidity sensitivity classification before storage and handling, as the component is moisture-sensitive. Confirm the specific suffix 'AA88' matches the required industrial temperature grade (-40°C to +85°C) and TQFP-128 packaging format. Ensure ordering quantities align with standard tray packaging multiples to avoid partial reel issues.

Touch Screen Controllers Selection Notes

Select this model when a dedicated microcontroller integration is preferred over external host processors for touch gesture handling. The TQFP-128 package offers ample pin count for complex electrode arrays. Compare against the CYAT81682-128AS88 if an extended commercial/industrial temperature range up to +105°C is required for the application environment.

Touch Screen Controllers Part Context

This component belongs to the Infineon CYAT81682 series, representing the TrueTouch Standard Class controllers. These devices are engineered to replace legacy resistive touch solutions with higher durability and clarity. The part number structure indicates the pin count (128), package type, and specific electrical or thermal characteristics defined by the manufacturer's coding system.

Touch Screen Controllers Replacement Considerations

The CYAT81682-128AA88Z serves as a lead-free variant within the same electrical specification. For applications requiring extended temperature tolerance up to +105°C, the CYAT81682-128AS88 is the direct functional alternative. Pin compatibility remains consistent across these suffix variations.