CYTMA445-48LQI36AA

Touch Screen Controllers Overview

The CYTMA445-48LQI36AA is a multi-touch capacitive touchscreen controller manufactured by Cypress Semiconductor Corp. It integrates a 32-bit ARM Cortex CPU and supports I²C and SPI interfaces within a 44-QFN package. The device operates on a supply voltage range of 1.71 V to 5.5 V. Key technical features include ChargerArmor™ for noise immunity, DualSense™ technology for wet-finger tracking, and support for up to 10 simultaneous touch points with thin gloves. It is designed for screen sizes up to 5.0 inches diagonal with a sensor pitch of 4.8 mm.

Touch Screen Controllers Feature Summary

• Integrated 32-bit ARM Cortex CPU for register configuration and low-power look-for-touch mode
• ChargerArmor™ technology providing effective 28-V drive for high signal-to-noise ratio (SNR)
• DualSense™ technology enabling water rejection and wet-finger tracking capabilities
• Supports up to 10 fingers with thin gloves (≤1-mm thick) and 2 fingers with thick gloves (≤5-mm thick)

Touch Screen Controllers Applications

• Multi-touch capacitive touchscreen controllers for mobile devices
• Portable electronics requiring glove operation and wet-finger tracking
• Systems utilizing Android drivers for touch interface management

Touch Screen Controllers Part Context

This component belongs to the CYTMA445 Multi-Touch All-Points Touchscreen Controller family. It is distinct from Cypress SRAM products such as the CY7C1470BV25 or CY62136FV30LL found in general search results. The part number suffix '48LQI36AA' indicates specific package and temperature grade variations within the CYTMA445 series.

Touch Screen Controllers Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Engineering changes should be verified against the official datasheet for pin compatibility and electrical specifications before substitution.