CY8CTMA340-48LQI-09

Application Specific Microcontrollers Overview

The CY8CTMA340-48LQI-09 is a TrueTouch multi-touch all-points touchscreen controller manufactured by Cypress Semiconductor. It supports up to four independent fingers and tracks up to 252 intersections via 32 sense pins, accommodating screens up to 4.5 inches diagonal. The device operates with a digital supply voltage of 1.71 V to 3.6 V and an analog supply voltage of 2.7 V to 3.6 V. It features I2C (up to 400 kHz) and SPI (up to 2 Mbps) communication interfaces. The component is housed in a 48-pin 6 × 6 × 0.6 mm QFN package.

Application Specific Microcontrollers Feature Summary

• Tracks up to four fingers independently with ghost-free tracking
• Supports up to 32 sense pins for 252 intersections
• Includes Charger Armor technology for battery charger noise immunity
• Features self-calibration and smart noise suppression

Application Specific Microcontrollers Applications

• Smartphones and mobile devices
• Tablets and portable media players
• Industrial control panels requiring touch input

Application Specific Microcontrollers Procurement Notes

Verify the specific ordering suffix against the manufacturer's current product availability table. Confirm that the required feature set matches the '09' designation, which indicates support for four fingers without stylus functionality. Ensure the selected package variant aligns with the PCB footprint requirements for the 48-pin QFN configuration.

Application Specific Microcontrollers Selection Notes

Select this model when a maximum screen size of 4.5 inches diagonal is required. Verify that the host system can provide the necessary analog supply voltage range of 2.7 V to 3.6 V. Consider alternative suffixes if stylus replacement or larger screen support beyond 4.5 inches is needed for the application design.

Application Specific Microcontrollers Part Context

This component belongs to the CY8CTMA340 family of TrueTouch controllers. It is designed as a CMOS-based solution for capacitive sensing applications. The part integrates specific firmware capabilities for gesture decoding and large object detection within its dedicated hardware architecture.

Application Specific Microcontrollers Replacement Considerations

Substitute parts must match the 48-pin QFN package dimensions and electrical specifications. Verify compatibility with existing sensor stackups and ensure the replacement supports the required four-finger tracking capability.