CY8CTMA340-LQI-09

Application Specific Microcontrollers Overview

The CY8CTMA340-LQI-09 is a TrueTouch multi-touch all-points touchscreen controller designed for capacitive touchscreens up to 3.2 inches diagonal. It supports four-finger independent tracking and features ChargerArmor technology for battery charger noise immunity. The device includes integrated CapSense button support, large object detection, and wet-finger tracking capabilities. It operates with digital supply voltages from 1.71 V to 3.6 V and analog supply voltages from 2.7 V to 3.6 V. Communication interfaces include I2C slave up to 400 kHz and SPI slave with 2 Mbps sustained throughput.

Application Specific Microcontrollers Feature Summary

• Four-finger independent tracking with ghost-free capability
• ChargerArmor technology providing battery charger noise immunity
• Integrated CapSense button support and large object detection
• Best-in-class water rejection and wet-finger tracking

Application Specific Microcontrollers Applications

• Capacitive touchscreens up to 3.2 inches diagonal
• Smartphones and superphones requiring four-finger input
• Tablets and e-readers with integrated button support
• Devices operating in environments with LCD or RF noise

Application Specific Microcontrollers Procurement Notes

Verify the specific ordering suffix against the manufacturer's current product availability list, as part numbers may be subject to change or discontinuation. Confirm package type (36-pin QFN) and unique ID (0590H) match design requirements. Ensure interface voltage levels align with host system specifications before procurement.

Application Specific Microcontrollers Selection Notes

Select this model for applications requiring four-finger tracking without stylus support. Compare against CY8CTMA340-LQI-11 if passive stylus functionality is needed. Consider CY8CTMA340-48LQI variants for larger screen sizes up to 4.5 inches. Verify sensor pitch compatibility for screens exceeding standard dimensions.

Application Specific Microcontrollers Part Context

This component belongs to the Cypress TrueTouch Gen5 family of multi-touch controllers. It is part of the TMA subfamily designed for high-performance capacitive sensing. The LQI suffix indicates a 36-pin QFN package with 0.6 mm height. The 09 feature set specifically denotes four-finger tracking without stylus support.

Application Specific Microcontrollers Replacement Considerations

CY8CTMA340-LQI-11 offers identical hardware with added stylus support. CY8CTMA340-48LQI-09 provides the same features in a 48-pin QFN package for larger sensors. No direct pin-compatible substitutes are listed; verify firmware compatibility when migrating between feature sets.