CY8CTMA340-LQI-01T

Application Specific Microcontrollers Overview

The CY8CTMA340-LQI-01T is a TrueTouch capacitive touchscreen controller designed for multi-touch applications. It supports up to two independent fingers and accommodates screen sizes up to 4.5 inches diagonal, sensing up to 252 intersections via 32 sense pins. The device operates with a digital supply voltage range of 1.71 V to 3.6 V and an analog supply range of 2.7 V to 3.6 V. It features integrated Charger Armor technology for noise immunity and self-calibration capabilities. Communication is handled through I2C (up to 400 kHz) or SPI (up to 2 Mbps). The component is housed in a 48-pin 6 × 6 × 0.6 mm QFN package.

Application Specific Microcontrollers Feature Summary

• Supports up to two independent finger tracking points
• Enables ghost-free tracking on screens up to 4.5 inches diagonal
• Includes Charger Armor technology for battery charger noise immunity
• Features self-calibrating environmental adaptation and smart noise suppression

Application Specific Microcontrollers Applications

• Smartphones and mobile devices
• Tablets and portable media players
• Automotive infotainment systems
• Industrial control panels

Application Specific Microcontrollers Procurement Notes

Verify the specific ordering suffix against the manufacturer's current product availability list. Confirm that the 48-pin QFN package matches the PCB footprint requirements. Ensure the host system provides the required dual-rail power supplies or utilizes the supported single shared supply configuration within the specified voltage ranges.

Application Specific Microcontrollers Selection Notes

Select this model when a design requires support for exactly two simultaneous touch points. Verify compatibility with the target sensor stackup, as the device supports both plastic film and glass sensors. Consider the interface preference between I2C and SPI based on host processor capabilities and data throughput requirements.

Application Specific Microcontrollers Part Context

This component belongs to the Cypress TrueTouch Multi-Touch All-Points Controller family. It is part of the TMA subfamily utilizing CMOS technology. The 'LQI' designation indicates the 48-pin QFN package variant. This series is engineered to replace resistive stylus inputs while providing advanced gesture and water rejection capabilities.

Application Specific Microcontrollers Replacement Considerations

Consult official documentation for direct pin-compatible substitutes within the CY8CTMA340 series. Models such as CY8CTMA340-48LQI-03(T) offer similar packaging but include stylus support. Verify feature set differences before substitution.