TSC2000 Datasheet

IC型號(hào)：
TSC2000
PDF描述：
PDA ANALOG INTERFACE CIRCUIT
文件大?。?/label>
496.60KB
PDF頁(yè)數(shù)：
36頁(yè)
芯片廠家：
TI

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TSC2000

TSC

200

廬

SBAS257 鈥?FEBRUARY 2002

PDA ANALOG INTERFACE CIRCUIT

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 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鈩?/div>

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擄C resolution. The TSC2000 is

available in a TSSOP-20 package.

SPI is a registered trademark of Motorola.

US Patent No. 624639.

MISO

X+

X鈥?/div>

Y+

Y鈥?/div>

Touch Panel

Drivers

Clock

Serial

Interface

and

Control

Logic

A/D Converter

BAT1

Battery Monitor

MUX

DAV

PENIRQ

BAT2

AUX1

AUX2

REF

ARNG

OUT

D/A Converter

Internal 2.5V

Reference

Battery Monitor

SCLK

MOSI

Temp Sensor

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.

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.

www.ti.com

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