MK712SLFTR

Overview

The MK712SLFTR is a touch screen controller manufactured by Renesas Electronics Corporation, designed for 4-wire resistive touch screens. It integrates screen drive, analog-to-digital conversion, and control circuits within a single chip. The device operates on a supply voltage ranging from 3V to 5.5V with a typical supply current of 5 mA. It features a 12-bit resolution and utilizes a parallel interface for data communication. The component is housed in a 28-SOIC package (0.295 inch / 7.50 mm width) and supports surface mount installation. It functions continuously to monitor the screen for touch events.

Feature Summary

• Integrated solution providing screen drive, A/D converter, and control circuits for 4-wire analog resistive touch screens
• 12-bit resolution with parallel interface capability
• Low standby current consumption of typically 0.5 mA during monitoring mode
• Available in lead-free packages with industrial temperature range options

Applications

• Industrial control panels requiring resistive touch input
• Commercial displays and kiosks
• Automotive infotainment systems (automotive grade variants)

Procurement Notes

Verify component status as the MK712 series may be discontinued or subject to last-time buy notices. Confirm package type availability, as the SLFTR suffix indicates tape and reel packaging in a 28-SOIC form factor. Check for lead-free compliance documentation and ensure operating temperature ranges match specific application requirements, distinguishing between commercial (0°C to +70°C) and industrial (-30°C to +70°C) grades.

Selection Notes

Select the MK712SLFTR when a dedicated, low-power controller for 4-wire resistive touch screens is required without complex microcontroller integration. Ensure the system design accommodates a parallel interface and 28-pin SOIC footprint. Consider power constraints, noting the 5 mA active supply current versus 0.5 mA standby current. Verify that the 12-bit resolution meets precision requirements for the specific touch panel application.

Part Context

The MK712 belongs to the Renesas touch screen controller family, specifically optimized for resistive technologies. It serves as a standalone peripheral to offload touch processing from main processors. The SLFTR designation specifies the tape-and-reel packaging variant suitable for automated surface-mount assembly processes, differing from bulk or tube packaging options available for other suffixes.

Replacement Considerations

Publicly confirmed substitute part numbers are not provided in the source material. Due to potential discontinuation status, verify equivalent functionality with newer Renesas touch controllers or generic 4-wire resistive touch ICs ensuring pin compatibility and interface matching.