SX8677IWLTRT

Overview

The SX8677IWLTRT is a haptics-enabled multitouch controller for 4/5-wire resistive touchscreens with proximity sensing, manufactured by Semtech. It integrates a touchscreen controller (TSC) with a wiper sampling rate of 40 kS/s and 12-bit resolution. The device operates on an I2C interface within a supply voltage range of 2.3 V to 3.6 V. It draws 120 uA of operating supply current and functions reliably between -40°C and +85°C.

Feature Summary

• Integrated proximity sensing capability
• Supports 4-Wire and 5-Wire resistive touch interfaces via I2C
• 12-bit resolution with 40 kS/s wiper sampling rate

Applications

• Resistive touchscreen controllers in portable devices
• Haptics-enabled user interface systems

Procurement Notes

Verify the specific suffix 'IWLTRT' against official Semtech documentation to confirm tape and reel packaging specifications and temperature grade. Ensure compatibility with existing I2C bus configurations and power supply rails before procurement.

Selection Notes

Select this component for applications requiring integrated proximity detection alongside standard resistive touch control. Confirm that the 40 kS/s sampling rate meets system latency requirements and that the 2.3V-3.6V input range aligns with the target platform's power architecture.

Part Context

This part belongs to the Semtech SX86xx series of touch screen controllers. It shares core functionalities with variants like the SX8674ICSTRT but differs in packaging and potentially specific firmware or pinout configurations defined by the IWLTRT suffix.

Replacement Considerations

Direct substitutes include other Semtech resistive touch controllers such as the SX8674. Verify pin-to-pin compatibility and register-level software integration when considering alternative part numbers from the same family.