FEATURES

4-WIRE TOUCH SCREEN INTERFACE

RATIOMETRIC CONVERSION

SINGLE 2.7V TO 3.6V SUPPLY

SERIAL INTERFACE

INTERNAL DETECTION OF SCREEN TOUCH

PROGRAMMABLE 8-, 10-, OR 12-BIT

RESOLUTION

PROGRAMMABLE SAMPLING RATES

DIRECT BATTERY MEASUREMENT (0.5V to 6V)

ON-CHIP TEMPERATURE MEASUREMENT

TOUCH-PRESSURE MEASUREMENT

FULL POWER-DOWN CONTROL

TSSOP-20 PACKAGE

APPLICATIONS

PERSONAL DIGITAL ASSISTANTS

CELLULAR PHONES

MP3 PLAYERS

DESCRIPTION

The TSC2000 is a complete PDA analog interface circuit. It

contains a complete 12-bit, Analog-to-Digital (A/D) resistive

touch screen converter including drivers, the control to measure

touch pressure, and an 8-bit Digital-to-Analog (D/A)

converter output for LCD contrast control. The TSC2000

interfaces to the host controller through a standard SPI™

serial interface. The TSC2000 offers programmable resolution

and sampling rates from 8- to 12-bits and up to 125kHz to

accommodate different screen sizes.

The TSC2000 also offers two battery-measurement inputs,

one of which is capable of reading battery voltages up to 6V

while operating at only 2.7V. It also has an on-chip temperature

sensor capable of reading 0.3°C resolution. The TSC2000 is

available in a TSSOP-20 package.

SPI is a registered trademark of Motorola.

US Patent No. 624639.