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TSC2200 Datasheet(PDF) 1 Page - Texas Instruments

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No. de pieza TSC2200
Descripción Electrónicos  PDA ANALOG INTERFACE CIRCUIT
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Fabricante Electrónico  TI1 [Texas Instruments]
Página de inicio  http://www.ti.com
Logo TI1 - Texas Instruments

TSC2200 Datasheet(HTML) 1 Page - Texas Instruments

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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 © 2001-2004, 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 AND
4-BY-4 KEYPAD INTERFACE
q RATIOMETRIC CONVERSION
q SINGLE 2.7V TO 3.6V SUPPLY
q SERIAL INTERFACE
q INTERNAL DETECTION OF SCREEN TOUCH
AND KEYPAD
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-28 AND QFN-32 PACKAGES
APPLICATIONS
q PERSONAL DIGITAL ASSISTANTS
q CELLULAR PHONES
q MP3 PLAYERS
PDA ANALOG INTERFACE CIRCUIT
DESCRIPTION
The TSC2200 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, keyboard controller, and an 8-bit Digital-
to-Analog (D/A) converter output for LCD contrast control.
The TSC2200 interfaces to the host controller through a
standard SPI™ serial interface. The TSC2200 offers program-
mable resolution and sampling rates from 8- to 12-bits and up
to 125kHz to accommodate different screen sizes.
The TSC2200 also offers two battery-measurement inputs
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 TSC2200 is available
in a TSSOP-28 and a QFN-32 package.
TSC2200
SBAS191F – FEBRUARY 2001 – REVISED APRIL 2004
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
KBIRQ
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
Keyboard Scanner
and State Control
C1
C2 C3 C4 R1 R2 R3 R4
TSC2200
TSC2200


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