CY8CTMA340-FNI-09

Overview

The CY8CTMA340-FNI-09T is a TrueTouch multi-touch all-points touchscreen controller designed for capacitive sensing applications. It supports up to four independent fingers and accommodates screen sizes up to 4.5 inches diagonally, with support for up to 7 inches using stretched sensor pitch. The device features 32 sense pins capable of sensing up to 252 intersections. It operates on digital supply voltages ranging from 1.71 V to 3.6 V and analog supply voltages from 2.7 V to 3.6 V. The component utilizes a 49-ball CSP package measuring 3.2 × 3.2 × 0.55 mm.

Feature Summary

• Tracks up to four fingers independently with ghost-free tracking
• Supports passive stylus replacement with a 1-mm tip
• Includes Charger Armor technology for battery charger noise immunity
• Provides best-in-class water rejection and large object detection

Applications

• Capacitive touchscreens in smartphones and mobile devices
• Portable electronics requiring resistive stylus replacement functionality
• Android and Windows Phone Series 7 compliant systems

Procurement Notes

Verify the specific ordering suffix 'T' indicates tape and reel packaging when sourcing this component. Confirm that the FNI designation corresponds to the 49-ball CSP package type. Ensure compatibility with the required interface voltage levels before procurement.

Selection Notes

Select the CY8CTMA340-FNI-09T for designs requiring four-finger tracking capability. This model is suitable for screens up to 4.5 inches diagonal. Consider the 49-ball CSP package for space-constrained layouts. Verify that the application environment benefits from the integrated Charger Armor and water rejection features.

Part Context

This part belongs to the Cypress TrueTouch family of multi-touch controllers. It is specifically configured for four-finger tracking without stylus support, distinguishing it from the -11 series which includes stylus capabilities. The FNI suffix identifies the 49-ball CSP package option within the TMA340 product line.

Replacement Considerations

The CY8CTMA340-LQI-09T serves as a pin-compatible alternative in a 36-pin QFN package for smaller screen sizes. For larger displays, the CY8CTMA340-48LQI-09T offers the same feature set in a 48-pin QFN package.