SX8654IWLTRT

Overview

The SX8654IWLTRT is a haptics-enabled 4/5-wire resistive touchscreen controller with proximity sensing. It features a 12-bit resolution and operates on a supply voltage range of 2.3V to 3.6V. The device supports I2C serial interface communication and includes wiper sampling rates up to 40 kS/s. Packaged in a 20-QFN (4x4) format, it integrates touch screen control functions with advanced haptic feedback capabilities for interactive display applications.

Feature Summary

• Integrates haptic feedback generation with resistive touch sensing
• Supports 4-wire and 5-wire resistive touchscreen configurations
• Includes proximity sensing functionality for enhanced user interaction
• Utilizes I2C serial interface for system connectivity

Applications

• Interactive display systems requiring tactile feedback
• Industrial control panels with resistive touch interfaces
• Consumer electronics with integrated haptic response
• Medical devices needing precise touch input and feedback

Procurement Notes

Verify the specific suffix 'IWLTRT' against official Semtech documentation to confirm package type and temperature grade. Ensure compatibility with existing I2C bus protocols and power supply rails within the 2.3V to 3.6V range. Confirm that the 20-QFN footprint matches the target PCB design. Check for any recent lifecycle status updates or obsolescence notices directly from the manufacturer before finalizing procurement plans.

Selection Notes

Select this component when both resistive touch input and active haptic feedback are required in a single IC. It is suitable for applications where space constraints favor a compact QFN package over discrete solutions. Consider the 12-bit resolution and sampling rate requirements for smooth touch tracking. Evaluate the I2C interface compatibility with the host microcontroller. This part is ideal for systems needing proximity detection alongside standard touch operations.

Part Context

The SX8654 series represents Semtech's solution for combining touch control with haptic output. The SX8654IWLTRT variant specifically denotes the industrial temperature grade and reel packaging configuration. It belongs to a family of controllers designed for resistive screens, offering integrated signal processing and drive capabilities. This integration reduces bill-of-materials complexity compared to separate touch and haptic driver chips.

Replacement Considerations

Cross-reference with SX8655 or SX8656 models if different pinout or feature sets are needed. Verify electrical compatibility with existing firmware drivers. Ensure mechanical fit within the 20-QFN enclosure dimensions. Check for any changes in supply voltage requirements or interface protocols between original and substitute parts.