MK715R中文資料ICST數(shù)據(jù)手冊PDF規(guī)格書

General Description

The MK715 Touch Screen Controller IC provides all the screen drive, Analog to Digital converter (ADC) and control circuits to easily interface to 4-wire analog resistive touch screens. It also includes a general purpose A to D converter and a clock synthesizer.

Features

? Tiny 20 pin SSOP (150 mil body)

? 4 microamp standby current

? Less than 3mA active current at 3.3V, including screen drive

? Touch pressure can be measured

? One or two general purpose A to D inputs

? On-chip voltage reference

? 32.768kHz crystal/clock input

? MHz clock outputs available

? Operates with four wire touch screens

? Ratiometric conversion eliminates screen calibration

? Automatic wake up upon screen touch

? Programmable conversion rate to a maximum of 303 points per second

? 3.3V or 5V supply (2.7V version available)

? 10 bit A/D converter

? Full powerdown control

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

? A to D Converter guaranteed monotonic

? 3 or 4 wire serial interface

Applications

? Notebook Computers

? Handheld Computers

? PDAs

? Touch-screen kiosks