CYAT71658-56LWS41T

Overview

The CYAT71658-56LWS41T is a capacitive touchscreen controller from Infineon Technologies, based on the PSoC TrueTouch architecture. It operates within a supply voltage range of 1.71 V to 5.5 V and supports an operating temperature range from -40 °C to +105 °C. The component is housed in a QFN-56 surface-mount package and is classified as moisture sensitive. Designed for high-performance touch sensing, it interfaces with host processors to detect finger or stylus positions.

Feature Summary

• PSoC-based TrueTouch capacitive touch controller technology
• Wide supply voltage operation: 1.71 V to 5.5 V
• Extended industrial temperature range: -40 °C to +105 °C
• QFN-56 SMD/SMT package with moisture sensitivity

Applications

• Capacitive touchscreen interface systems
• Embedded touch input devices requiring dedicated controllers
• Industrial applications with extended temperature requirements

Procurement Notes

Verify availability status directly with authorized distributors, as current records indicate limited regional sales presence. Confirm RoHS compliance details and moisture sensitivity level (MSL) ratings prior to PCB assembly planning. Ensure ordering suffixes match specific packaging or variant requirements defined by Infineon.

Selection Notes

Select this component when a dedicated capacitive touch controller is required rather than general-purpose MCU ADCs. Consider the QFN-56 footprint and thermal characteristics for board layout. Verify that the 1.71 V to 5.5 V supply range aligns with the target system power design and that the -40 °C to +105 °C range meets environmental specifications.

Part Context

This part belongs to the Infineon PSoC TrueTouch family of touch screen controllers. These devices are engineered to provide superior accuracy, noise handling, and algorithm efficacy compared to standard microcontroller implementations. The series targets applications needing reliable touch detection without excessive host processor load.

Replacement Considerations

Consult official Infineon cross-reference tools for verified substitutes. Generic touch controllers may lack the specific TrueTouch algorithmic features. Verify pinout compatibility and electrical parameters before considering alternative part numbers.