CY8CTMA140-48LQI-01

Application Specific Microcontrollers Overview

The CY8CTMA140-48LQI-01 is a TrueTouch multi-touch all-points touchscreen controller manufactured by Cypress Semiconductor. It supports up to four independent finger tracks on screens up to 4.5 inches diagonal, utilizing a 48-pin QFN package (6 × 6 × 0.6 mm). The device features Charger Armor technology for noise immunity and self-calibration. Electrical specifications include a digital supply voltage range of 1.71 V to 3.6 V and an analog supply voltage range of 2.7 V to 3.6 V. Communication interfaces consist of I2C slave support up to 400 kHz and SPI slave with 2 Mbps sustained throughput.

Application Specific Microcontrollers Feature Summary

• Tracks up to four fingers independently with ghost-free tracking
• Supports screen sizes up to 4.5-inch diagonal with up to 252 intersections
• Features Charger Armor technology for battery charger noise immunity
• Includes integrated CapSense button support and field upgrades via bootloader

Application Specific Microcontrollers Applications

• Smartphones and mobile devices requiring multi-touch input
• Tablets and handheld gaming consoles
• Industrial control panels with plastic film or glass sensors

Application Specific Microcontrollers Procurement Notes

Verify the specific ordering suffix 'T' if tape and reel packaging is required, as the base part number may default to tube packaging. Confirm that the industrial temperature grade ('I') meets the operational requirements. Ensure the host system provides the necessary dual-rail power supplies or a single shared supply within the specified voltage ranges.

Application Specific Microcontrollers Selection Notes

Select this model over the 36-pin variant when supporting larger sensor matrices up to 252 nodes is required. The 48-pin QFN package accommodates the extended sense pin count needed for 4.5-inch displays. Verify compatibility with Android and Windows Phone Series 7 compliance requirements before finalizing the design.

Application Specific Microcontrollers Part Context

This component belongs to the TrueTouch Multi-Touch All-Points Controller family. It serves as a specialized peripheral for capacitive touch sensing applications, distinct from general-purpose microcontrollers. The CY8CTMA140 series integrates dedicated hardware for gesture decoding and large object detection to offload processing from the main application processor.

Application Specific Microcontrollers Replacement Considerations

The datasheet indicates no direct replacement part numbers are listed for this obsolete summary document. Designers should consult current Cypress or Infineon product portfolios for updated multi-touch controllers with equivalent interface and performance specifications.