CY8CTMA340-LQI-09T

Application Specific Microcontrollers Overview

The CY8CTMA340-LQI-09T is a TrueTouch multi-touch all-points touchscreen controller manufactured by Cypress Semiconductor. It supports up to four independent fingers and accommodates screen sizes up to 4.5 inches diagonal, or 7 inches with stretched sensor pitch. The device features 32 sense pins capable of sensing up to 252 intersections. It operates on a digital supply voltage range of 1.71 V to 3.6 V and an analog supply voltage range of 2.7 V to 3.6 V. The component is housed in a 36-pin QFN package measuring 5 × 5 × 0.6 mm.

Application Specific Microcontrollers Feature Summary

• Supports up to four independent finger tracking points
• Includes ChargerArmor technology for battery charger noise immunity
• Provides water rejection and large object detection capabilities
• Features integrated CapSense button support

Application Specific Microcontrollers Applications

• Smartphones and mobile devices requiring multi-touch interfaces
• Tablets and portable media players
• Industrial control panels with glove or stylus interaction needs
• Automotive infotainment systems

Application Specific Microcontrollers Procurement Notes

Verify the ordering suffix 'T' indicates tape and reel packaging configuration. Confirm the specific feature set code '09' aligns with the requirement for four-finger tracking without stylus support. Ensure the 36-pin QFN package dimensions match the PCB footprint design constraints.

Application Specific Microcontrollers Selection Notes

Select this model when four-finger tracking is required without passive stylus functionality. Compare against the CY8CTMA340-LQI-11(T) if stylus replacement capability is needed. Consider the CY8CTMA340-48LQI-09(T) if a larger 48-pin package is preferred for board layout flexibility while maintaining identical electrical characteristics.

Application Specific Microcontrollers Part Context

This component belongs to the CY8CTMA340 family of TrueTouch controllers. It shares core architecture with variants like the CY8CTMA340-FNI-09T but differs in package type (QFN vs CSP) and pin count. The '09' designation specifically denotes the four-finger feature subset within the broader product line.

Application Specific Microcontrollers Replacement Considerations

Direct replacements include CY8CTMA340-LQI-11(T) for added stylus support or CY8CTMA340-48LQI-09(T) for a 48-pin QFN alternative. Verify software compatibility as driver configurations may vary between feature sets.