CY8CTMA340-48LQI-01T

Application Specific Microcontrollers Overview

The CY8CTMA340-48LQI-01T 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

• Supports up to two fingers with ghost-free tracking
• Resistive stylus replacement capability with a 1-mm tip
• Charger Armor technology for battery charger noise immunity
• Integrated CapSense button support

Application Specific Microcontrollers Applications

• Mobile phones
• Tablets
• Industrial control panels

Application Specific Microcontrollers Procurement Notes

Verify that the specific ordering suffix matches the required feature set. The '01' suffix indicates a two-finger tracking configuration without stylus support. Confirm the package type is the 48-pin QFN variant. Ensure the host system provides the necessary I2C or SPI communication interface as specified in the design requirements.

Application Specific Microcontrollers Selection Notes

Select this component when a two-finger interface is sufficient for the application. Consider alternative suffixes such as '09' for four-finger tracking or '03' if passive stylus functionality is required. Evaluate power constraints against the low-power state current of less than 1.3 mA and deep sleep current of 1 µA.

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 is designed to replace resistive touch solutions while providing enhanced performance metrics including high signal-to-noise ratio and water rejection capabilities.

Application Specific Microcontrollers Replacement Considerations

Direct replacements include other CY8CTMA340 variants with different feature sets. For example, the CY8CTMA340-48LQI-03T offers similar packaging but includes stylus support. The CY8CTMA340-48LQI-09T provides four-finger tracking capability within the same physical footprint.