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TSC2006
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SBAS415A–JUNE 2007–REVISED NOVEMBER 2007
1.2V to 3.6V, 12-Bit, Nanopower, 4-Wire
TOUCH SCREEN CONTROLLER with SPI™ Interface
1
FEATURES
APPLICATIONS
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Personal Digital Assistants
Cellular Phones
Portable Instruments
Point-of-Sale Terminals
MP3 Players, Pagers
Multiscreen Touch Control
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4-Wire Touch Screen Interface
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Ratiometric Conversion
Single 1.2V to 3.6V Supply
Preprocessing to Reduce Bus Activity
High-Speed SPI-Compatible Interface
Internal Detection of Screen Touch
Register-Based Programmable:
DESCRIPTION
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10-Bit or 12-Bit Resolution
Sampling Rates
The TSC2006 is a very low-power touch screen
controller designed to work with power-sensitive,
handheld applications that are based on advanced
low-voltage processors. It works with a supply voltage
as low as 1.2V, which can be supplied by a
System Timing
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On-Chip Temperature Measurement
Touch Pressure Measurement
Auto Power-Down Control
Low Power:
single-cell battery. It contains
a
complete,
ultralow-power, 12-bit, analog-to-digital (A/D) resistive
touch screen converter, including drivers and the
control logic to measure touch pressure.
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707µW at 1.8V, 50SSPS
In addition to these standard features, the TSC2006
offers
measurements to reduce bus loading, thus reducing
the consumption of host processor resources that can
then be redirected to more critical functions.
544µW at 1.6V, 50SSPS
preprocessing
of
the
touch
screen
280µW at 1.2V, 50SSPS
69µW at 1.6V, 8.2kSPS Eq. Rate
43µW 1.2V, 8.2kSPS Eq. Rate
The TSC2006 supports an SPI-compatible serial bus
up to 25MHz. It offers programmable resolution of 10
or 12 bits to accommodate different screen sizes and
performance needs.
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Enhanced ESD Protection:
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±8kV HBM
±1kV CDM
Target ±25kV Air Gap Discharge
The TSC2006 is available in a miniature 20-lead,
4 × 4 QFN package, and is characterized for the
–40°C to +85°C industrial temperature range.
Target ±12kV Contact Discharge
4 × 4 QFN-20 and 0.4mm 4 × 4 XTQFN-20(1)
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Packages
(1)
XTQFN package available Q2, 2008.
U.S. Patent No. 6246394; other patents pending.
PENIRQ
PINTDAV
DAV
VREF
X+
Touch
X-
CS
Screen
Drivers
Y+
SAR
ADC
SPI
SCLK
Interface
Mux
Y-
Serial
Interface
SDI
and
TEMP
Control
RESET
SDO
AUX
Internal
Clock
1
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.
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SPI is a trademark of Motorola, Inc.
All other trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2007, Texas Instruments Incorporated