CYAT81685-100AA71

Touch Screen Controllers Overview

The CYAT81685-100AA71 is a capacitive touchscreen controller from Infineon Technologies, part of the TrueTouch Standard TS3xxx 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. It operates on a supply voltage range of 1.71 V to 5.5 V, drawing 20 mA during operation. The component is housed in a TQFP-100 package suitable for SMD/SMT installation and functions within a temperature range of -40°C to +85°C.

Touch Screen Controllers Feature Summary

• Integrated Arm Cortex CPU for programmable touch processing
• Supports I2C and SPI communication interfaces
• Includes 4 ADC inputs for sensor connectivity
• Capacitive sensing technology with 32-bit resolution

Touch Screen Controllers Applications

• Smartphones and mobile devices
• Tablets and portable media players
• Industrial control panels requiring multi-touch input

Touch Screen Controllers Procurement Notes

Verify humidity sensitivity classification before storage and handling, as the component is moisture-sensitive. Confirm the specific suffix requirements for packaging and tape-and-reel options against official Infineon documentation to ensure compatibility with automated assembly lines.

Touch Screen Controllers Selection Notes

Select this model when a dedicated microcontroller-based touch solution is required for complex gesture algorithms. Ensure the design accommodates the TQFP-100 footprint and provides adequate thermal management for the specified operating temperature range of -40°C to +85°C.

Touch Screen Controllers Part Context

This part belongs to the CYAT81685 series, which represents Infineon's TrueTouch Standard controllers. These components are designed to replace discrete touch solutions by integrating processing power directly into the controller, reducing system complexity and board space requirements for consumer electronics.

Touch Screen Controllers Replacement Considerations

Check for suffix variations such as CYAT81685-100AA71Z or CYAT81685-100AS71Z for different packaging or environmental ratings. Verify pin-to-pin compatibility with existing designs before substituting.