Description

The MK712 Touch Screen Controller IC provides all the screen drive, A to D converter and control circuits to easily interface to 4-wire analog resistive touch screens.

Features

• Packaged in 28-pin SSOP (150 mil) or 28-pin SOIC (300 mil)

• Industrial (-30°C to +70°C) and commercial (0 to +70°C) and automotive (-35°C to +85°C) temperature ranges

• Available in Pb (lead) free

• Fully integrated, lowest power solution

• Low standby current of 0.5µA (typical) at 5.0 V

• Active current while converting less than 10 mA

• Resolves 350 dots/inch on 10.5” display

• Maximum speed of 197 points/second

• Ratio metric conversion may eliminate screen calibration

• Automatically wakes up and goes back to standby

• 3.3 V or 5 V supply

• 12 bit A/D converter

• Simplifies the writing of software for touch screens

• Extended temperature range available

• Capacitors are the only external components required

• Touch screen is directly driven - no external transistors are required

• Programmable conversion rate

• A to D Converter is monotonic

• Parallel interface