CYAT81658-64AS48T

Overview

The CYAT81658-64AS48T is an automotive-grade, PSoC-based multitouch all-points touchscreen controller from Infineon Technologies. It features a 32-bit Arm Cortex CPU and supports up to 48 sense pins with 560 intersections for screens up to 8.5 inches. The device operates on a 1.71–5.5 V supply range and includes I2C (up to 400 kbps) and SPI (up to 8 Mbps) interfaces. Packaged in a 64-pin TQFP, it supports the Automotive-S temperature range of -40 °C to +105 °C.

Feature Summary

• AEC Q100 qualified for automotive electronics applications
• Supports up to 10 simultaneous touch points with thin glove capability
• Integrated noise suppression via AutoArmor and DualSense water rejection
• Configurable refresh rates up to 250 Hz with low-power wake modes

Applications

• Automotive infotainment systems
• Vehicle instrument clusters
• Center console control panels

Procurement Notes

Verify that the 'S' suffix confirms the extended -40 °C to +105 °C operating range required for your specific application environment. Confirm the 'T' suffix indicates tape-and-reel packaging suitable for automated surface-mount assembly processes.

Selection Notes

Select this model when high-temperature reliability is critical. Ensure the host system supports the required 1.71–5.5 V logic supply and utilizes either I2C or SPI communication protocols compatible with the specified bit rates.

Part Context

This component belongs to the CYAT8165x series of PSoC Automotive Multitouch controllers. It shares core architecture with other variants in the family but is distinguished by its specific package type, pin count, and extended temperature rating.

Replacement Considerations

Direct replacements within the same package and temperature grade include CYAT81658-64AA48T, though note that the 'A' suffix denotes a lower -40 °C to +85 °C operating range.