Freescale Semiconductor Evaluation Board for Touch Sensing Platform EVBCRTOUCH EVBCRTOUCH Information Guide

Ready Play Solutions

Xtrinsic Capacitive and Resistive 
Touch-Sensing Platform

Overview

Freescale Ready Play solutions integrate functionality in different applications, allowing 
customers to add features while reducing development cost—simplifying design cycles 
and enabling scalability in applications and systems.

The Xtrinsic capacitive and resistive touch-sensing platform (CRTouch) enables resistive 
touch screens to handle basic gesture recognition and allows the addition of up to four 
capacitive electrodes to your system, all packaged on a 5 x 5 mm lead-free 32-pin 
QFN. It supports four- and five-wire touch screens and communicates over UART and 
I2C communication protocols. The implementation of these technologies enables the 
CRTouch to help reduce space, cut software development costs and speed time  
to market.

Key Features

•  Standard X, Y resistive touch screen detection

with optional calibration and built-in filter for 
improved stability 

•  Four- and five-wire pressure detection

•  Two touch gesture detection on a four wire

screen

•  Zoom in/out

•  Rotate direction indication and angle

measurement

•  Four capacitive electrodes independent from

touch screen may be configured as keypad, 
rotary or slider

•  UART and I

2

C communication available

  Two selectable I

2

C addresses

  UART baud rate auto detection 

mechanism

•  Event indicator signal for host processor

•  Configurable sample rate with up to 200

points per second

•  Linux

®

, Android

®

and PEG integration

example code available

•  1.8- to 3.6-volt operation

•  32-pin QFN package

•  –40°C to +105°C operating temperature

•  Normal run, sleep and shutdown modes for

reduced power consumption