DESCRIPTION

The ScreenCoderTM SPI/Serial is a touch screen controller and integrated digitizer IC designed specifically for RISC-based systems, such as wireless Internet appliances. The small, single footprint IC interfaces the system via either the Serial Peripheral Interface (SPI) or Asynchronous Serial Interface.

FEATURES

? Touch screen controller / digitizer in a single, small footprint IC

? Interfaces the system via either Serial Peripheral Interface (SPI) and Asynchronous Serial Interface

? Works with any 4- or 8-wire resistive touch screen, regardless of size, material or vendor

? Provides high resolution of 1000 points per axis and a sampling rate of 200Hz

? Accurate, quick touch response due to advanced sampling technology and patented algorithms

? Zero-PowerTMoperation — IC typically consumes less than 1μA

? Highly resistant to RF and other noise sources

? Uses sophisticated power management for maximum power savings

? Offers external PS/2 port for the hot-plug connection of an external PS/2 pointing device

? Capable of providing other features, such as battery monitoring and GPIO

? PS/2 and USB interfaces available

? Available in small 7mm X 7mm 32-pin LQFP package

APPLICATIONS

? Wireless Internet Appliances

? Handheld PCs (H/PCs)

? Web Phones

? Portable Systems