CYAT81682-128AS88Z

Touch Screen Controllers Overview

The CYAT81682-128AS88Z is a capacitive touchscreen controller from Infineon Technologies, part of the TrueTouch PSOC-based series. It features a 32-bit resolution and supports I2C and SPI interfaces. The device operates on a supply voltage range of 1.71 V to 5.5 V with a typical operating current of 20 mA. It utilizes an Arm Cortex CPU structure and includes four ADC inputs. Designed for surface-mount applications, it is housed in a TQFP-128 package and functions within a temperature range of -40°C to +105°C.

Touch Screen Controllers Feature Summary

• Capacitive touchscreen controller with 32-bit resolution
• Integrated Arm Cortex CPU architecture
• Dual interface support: I2C and SPI
• Wide operating voltage range: 1.71 V to 5.5 V

Touch Screen Controllers Applications

• Capacitive touch panel systems
• Embedded human-machine interfaces
• Industrial control panels requiring wide temperature operation

Touch Screen Controllers Procurement Notes

Verify the specific suffix 'Z' against official documentation to confirm if it denotes tape-and-reel packaging or other handling variations compared to tray-packaged equivalents. Confirm moisture sensitivity levels and reflow soldering profiles prior to assembly. Ensure compatibility with the target system's voltage domains and communication protocols.

Touch Screen Controllers Selection Notes

Select this component when a high-resolution capacitive touch solution with integrated processing capabilities is required. The TQFP-128 package offers ample pin count for complex sensor arrays. Consider the extended industrial temperature range (-40°C to +105°C) for environments exceeding standard commercial limits. Verify that the host system can support both I2C and SPI communication standards.

Touch Screen Controllers Part Context

This part belongs to the CYAT81682 family of TrueTouch controllers. Variants within this series differ primarily by package type (e.g., TQFP-100 vs. TQFP-128), pin count, and packaging format (Tray vs. Reel). The AS88Z suffix indicates specific manufacturing or packaging attributes distinct from non-Z or AA variants.

Touch Screen Controllers Replacement Considerations

Direct substitutes include other CYAT81682 variants such as CYAT81682-128AA88Z or CYAT81682-128AS88, provided the package and electrical specifications match. Cross-family replacements require verification of pin compatibility and firmware support.