TSC2000

具有 8/10/12 位 125Khz ADC 和 SPI 接口的 4 线可编程触摸屏控制器

The 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.

.

4-WIRE TOUCH SCREEN INTERFACE

.

RA OMETRIC 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

SPI is a registered trademark of Motorola.

US Patent No. 624639.