CYAT81655-100AS48

Overview

The CYAT81655-100AS48 is a capacitive touchscreen controller belonging to the Infineon TrueTouch CYAT8165x series. It integrates an ARM Cortex CPU for on-chip processing of touch and gesture data. The device supports I2C and SPI interfaces for communication. Electrical specifications include a maximum supply voltage of 5.5 V, a minimum operating voltage of 1.71 V, and a typical operating current of 20 mA. It operates within a temperature range of -40°C to +105°C and is housed in a TQFP-100 surface-mount package.

Feature Summary

• Integrated ARM Cortex CPU for efficient signal processing
• Supports both I2C and SPI communication protocols
• Wide operating voltage range from 1.71 V to 5.5 V
• Automotive-grade reliability with operation up to +105°C

Applications

• Automotive infotainment systems
• Vehicle instrument clusters
• Center console touch interfaces

Procurement Notes

Verify the specific suffix AS48 against official datasheets to confirm package type and tape/reel configuration. Confirm AEC-Q100 qualification status for automotive deployment requirements. Check lead times as production cycles may vary. Ensure ESD protection measures are implemented during handling due to moisture sensitivity classification.

Selection Notes

Select this component when a dedicated capacitive touch controller with integrated processing is required for automotive displays. The CYAT8165x series offers flexibility through its programmable architecture. Compare pin counts and interface options against other models in the CYAT8165x family to match specific PCB layout constraints and system bus requirements.

Part Context

This part is part of the TrueTouch Gen7XL family designed for automotive applications. It complements other Infineon automotive solutions such as AURIX microcontrollers and zone control units by providing specialized human-machine interface capabilities. The CYAT8165x series focuses on high performance and low power consumption for in-vehicle touch controls.

Replacement Considerations

Direct substitutes within the same family include CYAT81650, CYAT81652, and CYAT81658 variants. Verify pin compatibility and software configuration before swapping. Cross-reference with newer generation controllers if updated features or improved availability are needed.