CYAT81688-100AA61T

Touch Screen Controllers Overview

The CYAT81688-100AA61T 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 operates within a supply voltage range of 1.71 V to 5.5 V and draws approximately 20 mA during operation. It supports I2C and SPI interfaces for system communication. The component is housed in a TQFP-100 package suitable for surface-mount installation and functions reliably across an extended temperature range of -40°C to +105°C.

Touch Screen Controllers Feature Summary

• Integrated Arm Cortex CPU for programmable touch processing
• Supports I2C and SPI communication interfaces
• Extended industrial operating temperature range (-40°C to +105°C)
• Capacitive sensing with 4 ADC inputs

Touch Screen Controllers Applications

• Industrial human-machine interface (HMI) panels
• Automotive infotainment systems
• Medical device control panels

Touch Screen Controllers Procurement Notes

Verify the specific suffix 'T' indicates reel packaging when ordering. Confirm the maximum operating temperature rating (+105°C) matches the application environment requirements. Ensure the TQFP-100 footprint aligns with the PCB design. Check humidity sensitivity levels for proper storage and reflow soldering procedures.

Touch Screen Controllers Selection Notes

Select this model over the non-T variant if reel packaging is required for automated assembly lines. Compare against CYAT81688-100AA61 if tray packaging is acceptable and lower minimum order quantities are preferred. Verify that the 1.71V to 5.5V input voltage range covers the system power rails. Ensure the host processor supports either I2C or SPI protocols for data exchange.

Touch Screen Controllers Part Context

This component belongs to the Infineon TrueTouch Standard TS3xxx series, designed for high-performance capacitive touch applications. The CYAT81688 variant specifically targets multi-touch and gesture recognition capabilities. The '100' in the part number denotes the TQFP-100 package type, while the suffix distinguishes packaging and temperature grades within the same functional family.

Touch Screen Controllers Replacement Considerations

Direct substitutes include CYAT81688-100AA61 (tray packaged, commercial temp) and CYAT81688-100AS61T (reel packaged, extended temp). Verify pin compatibility and firmware configuration differences before swapping.