CYTMA445-48LQI36AC

Touch Screen Controllers Overview

The CYTMA445-48LQI36AC is a TrueTouch Multi-Touch All-Points Touchscreen Controller manufactured by Cypress Semiconductor Corp. It is designed for capacitive touch screen applications, supporting both I2C and SPI interfaces. The device features a 32-bit architecture and is housed in a 48-pin UFQFN package with an exposed pad, measuring 6x6 mm. This controller enables high-accuracy multi-touch input detection for embedded systems requiring compact form factors.

Touch Screen Controllers Feature Summary

• Supports TrueTouch Multi-Touch All-Points technology for comprehensive touch interaction
• Compatible with 2-Wire Capacitive sensing mechanisms
• Offers flexible connectivity via I2C and SPI digital interfaces

Touch Screen Controllers Applications

• Space-constrained portable electronic devices
• Multi-touch display interfaces
• Embedded human-machine interface (HMI) systems

Touch Screen Controllers Procurement Notes

Verify component authenticity through authorized distributors or certified suppliers. Confirm that the part number matches the specific suffix requirements for your design. Check for obsolescence status as some variants may be marked obsolete by the manufacturer. Ensure compatibility with existing firmware and hardware layouts before procurement.

Touch Screen Controllers Selection Notes

Select this controller when a compact 48-QFN footprint is required for multi-touch applications. Consider the I2C and SPI interface options based on system bus availability. Evaluate the 32-bit processing capability against application latency requirements. Ensure the design supports the necessary power supply voltages and thermal dissipation for the exposed pad package.

Touch Screen Controllers Part Context

This component belongs to the Cypress TrueTouch family of touchscreen controllers. It is specifically engineered for all-points multi-touch detection, distinguishing it from single-touch or simple gesture controllers. The part integrates sensing and processing capabilities into a small package, suitable for modern mobile and industrial touch interfaces.

Touch Screen Controllers Replacement Considerations

Check for direct substitutes within the CYTMA445 series, such as the CYTMA445-48LQI36AB or CYTMA445-48LQI36ZZ, ensuring pinout and interface compatibility. Verify if newer generations from Infineon (post-Cypress acquisition) offer equivalent functionality with updated support.