MK715 - Touch Screen Controller
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.
The IC continually monitors the screen
MK715 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 output
