描述 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.

特性 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