CYAT81655-64AA48

Overview

The CYAT81655-64AA48 is a capacitive touchscreen controller from Infineon Technologies, part of the TrueTouch family. It integrates an Arm Cortex CPU for advanced signal processing. The device supports I2C and SPI interfaces for system communication. It operates within a supply voltage range of 1.71 V to 5.5 V and draws 20 mA during operation. The component is rated for industrial temperatures between -40°C and +85°C. It is housed in a TQFP-64 surface-mount package.

Feature Summary

• Integrates an Arm Cortex CPU for embedded touch processing
• Supports dual I2C and SPI communication protocols
• Operates on a wide voltage range from 1.71 V to 5.5 V
• Designed for industrial temperature environments (-40°C to +85°C)

Applications

• Industrial control panels requiring robust touch input
• Medical devices needing reliable capacitive sensing
• Automotive infotainment systems operating in varied climates

Procurement Notes

Verify humidity sensitivity classification before storage and handling. Confirm the specific suffix AA48 corresponds to the required tray packaging configuration. Ensure the design accounts for the 20 mA operational current draw in power budget calculations. Check for RoHS compliance documentation if restricted substance regulations apply to the target market.

Selection Notes

Select this model when a dedicated MCU is not preferred for touch processing due to its integrated Cortex CPU. Choose the TQFP-64 package if board space constraints align with its footprint. Verify that the host system supports either I2C or SPI buses. Consider the -40°C to +85°C rating against environmental requirements; higher temperature grades may require different part numbers.

Part Context

This component belongs to the CYAT8165x series of TrueTouch controllers. It shares core architecture with other variants like the CYAT81658 but differs in pin count and package type. The series is designed for high-performance capacitive sensing applications across consumer and industrial sectors.

Replacement Considerations

Direct substitutes within the same series include CYAT81659-64AS48, though interface or temperature ratings should be verified. Cross-series replacements require checking pin compatibility and firmware support.