CY8CTMA340-48LQI-01

Application Specific Microcontrollers Overview

The CY8CTMA340-48LQI-01 is a TrueTouch multi-touch all-points touchscreen controller designed for capacitive touch interfaces. It supports up to two independent fingers and accommodates screen sizes up to 4.5 inches diagonal, with potential support for 7-inch displays using stretched sensor pitch. The device features up to 32 sense pins capable of sensing 252 intersections. It operates on an unregulated dual-rail supply configuration, accepting digital voltages from 1.71 V to 3.6 V and analog voltages from 2.7 V to 3.6 V, or a single shared supply within the 2.7 V to 3.6 V range.

Application Specific Microcontrollers Feature Summary

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

Application Specific Microcontrollers Applications

• Mass market mobile phones
• Mass market tablets
• E-readers
• Industrial control panels

Application Specific Microcontrollers Procurement Notes

Verify the specific ordering suffix against the manufacturer's current product summary datasheet (Document Number: 001-91023). Confirm that the '01' feature set aligns with the requirement for two-finger tracking without stylus support. Ensure the 48-pin QFN package matches the target PCB footprint and thermal requirements.

Application Specific Microcontrollers Selection Notes

Select this component when designing systems requiring two-finger interaction on screens up to 4.5 inches. Consider the 48-pin QFN package for board space constraints. Verify compatibility with I2C or SPI host interfaces, as the controller supports both communication protocols for data transfer.

Application Specific Microcontrollers Part Context

This part belongs to the Cypress TrueTouch family of multi-touch controllers. It utilizes PSoC technology to integrate programmable analog and digital resources. The CY8CTMA340 series provides a scalable solution for capacitive touch applications, offering various feature sets ranging from basic two-finger tracking to advanced four-finger and stylus capabilities.

Application Specific Microcontrollers Replacement Considerations

The CY8CTMA340-48LQI-03 serves as a direct functional replacement if active stylus support is required, sharing the same package and electrical specifications. Other variants in the TMA340 family offer different finger counts but may require software reconfiguration.