SX8678IWLTRT

Overview

The SX8678IWLTRT is a 12-bit touch screen controller from Semtech Corporation, designed for resistive touch applications. It supports 4-wire and 5-wire configurations via an I2C serial interface. The device is housed in a 20-WFQFN package with an exposed pad, measuring 4x4 mm. It operates as a dedicated screen controller IC, providing high-resolution digitization for user input interfaces.

Feature Summary

• Supports 4-wire and 5-wire resistive touch panel configurations
• Provides 12-bit resolution for precise coordinate detection
• Interfaces with host systems using standard I2C communication protocol

Applications

• Medical instrumentation and imaging devices
• Industrial control panels requiring robust input interfaces
• Automotive infotainment and HMI systems

Procurement Notes

Verify the specific ordering suffix to ensure the correct tape-and-reel quantity matches your production requirements. Confirm that the 20-WFQFN package dimensions align with your PCB footprint design. Ensure the I2C address configuration meets your system's bus topology constraints before finalizing procurement.

Selection Notes

Select this component when a dedicated resistive touch solution with 12-bit accuracy is required. It is suitable for environments where capacitive controllers are unsuitable due to glove usage or environmental factors. Consider the I2C interface compatibility with your main processor when integrating this controller into the system architecture.

Part Context

This part belongs to Semtech's family of touch screen controllers, distinct from their RF and sensing product lines. It serves as a specialized input device interface, separate from general-purpose GPIO expanders or force sensors. The model designation indicates a specific variant within the broader semiconductor portfolio focused on human-machine interaction.

Replacement Considerations

The SX8674IWLTRT is a documented alternative within the same manufacturer's lineup, offering haptics-enabled functionality. Verify pinout compatibility and software driver support when substituting between these models to ensure seamless integration without hardware redesign.