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TSC2000IPWG4 Datasheet(PDF) 1 Page - Texas Instruments |
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TSC2000IPWG4 Datasheet(HTML) 1 Page - Texas Instruments |
1 / 38 page www.ti.com PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. Copyright © 2002, Texas Instruments Incorporated Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. FEATURES q 4-WIRE TOUCH SCREEN INTERFACE q RATIOMETRIC CONVERSION q SINGLE 2.7V TO 3.6V SUPPLY q SERIAL INTERFACE q INTERNAL DETECTION OF SCREEN TOUCH q PROGRAMMABLE 8-, 10-, OR 12-BIT RESOLUTION q PROGRAMMABLE SAMPLING RATES q DIRECT BATTERY MEASUREMENT (0.5V to 6V) q ON-CHIP TEMPERATURE MEASUREMENT q TOUCH-PRESSURE MEASUREMENT q FULL POWER-DOWN CONTROL q TSSOP-20 PACKAGE APPLICATIONS q PERSONAL DIGITAL ASSISTANTS q CELLULAR PHONES q MP3 PLAYERS PDA ANALOG INTERFACE CIRCUIT 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 mea- sure 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. TSC2000 SBAS257 – FEBRUARY 2002 SPI is a registered trademark of Motorola. US Patent No. 624639. A/D Converter Internal 2.5V Reference MUX Serial Interface and Control Logic D/A Converter MISO SS SCLK MOSI DAV PENIRQ Touch Panel Drivers Temp Sensor Battery Monitor Battery Monitor X+ X– Y+ Y– V BAT1 V BAT2 Clock AUX1 AUX2 V REF ARNG A OUT ® TSC2 000 |
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