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Semtech Corporation - High-Performance USB Touch Screen Controller / Digitizer

Numéro de référence UR7HCTS2-U860
Description High-Performance USB Touch Screen Controller / Digitizer
Fabricant Semtech Corporation 
Logo Semtech Corporation 





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UR7HCTS2-U860 fiche technique
ScreenCoderTM UR7HCTS2-U860
High-Performance USB
Touch Screen Controller / Digitizer
HID & SYSTEM MANAGEMENT PRODUCTS, MOUSECODERTM FAMILY
DESCRIPTION
The ScreenCoderTM USB IC is the
first single IC that seamlessly
interfaces ANY 4- or 8-wire
resistive touch screen to a USB-
equipped system. It is also the
first touch screen controller IC on
the market designed to
accommodate a very wide range of
size, capacitance and resistance of
4- or 8-wire touch screens,
providing a universal performance
solution among different OEM
products and touch screen
vendors. This unique feature of the
IC provides OEMs with a wide
variety of interchangeable touch
screen options.
Unlike digitizers, the
ScreenCoderTM USB integrates a
digitizer with a controller that
performs all touch detection, noise
filtering, error elimination and
provides the host with processed
and stable positioning data over
USB. Semtech’s unique motion
algorithms provide high resistance
to RF and other noise sources
resulting in precise, non-jittery
cursor control.
Ideal application for the
ScreenCoderTM USB include
portable devices, interactive kiosks
and industrial / custom displays
with integrated touch screens.
The universal features of the
ScreenCoderTM USB, as
implemented in both the system
and the sensor interface, reduce
the development effort and cost of
touch input based systems. The
ScreenCoderTM USB is available in
a slim, 36-pin SSOP package.
FEATURES
• Controller & digitizer in a single IC
• Interfaces the system via USB
• Works with ANY 4- or 8-wire
resistive touch screen regardless
of size, material or vendor
• Provides high resolution - 1000
points per axis, enabling IC to
make precise drawing and
signature captures
• Accurate, quick touch response
due to Semtech’s advanced
sampling technology and
algorithms
• Highly resistant to RF and other
noise
• No digitizer or external A/D
necessary
• Fully compliant with USB HID
specifications; works with native
USB drivers including Windows®
98, Me and 2000
• Convienent calibration applet
offered free of charge
• Uses slim 36-pin, SSOP package
• Customized versions available
APPLICATIONS
• Handhelds/Notebooks
• Portable Devices
PIN ASSIGNMENTS
• Interactive Kiosks
• Industrial/Custom Touch Screens
1
RSVD1
RSVD2
RSVD3
SXL
SYT
SYB
SXR
RSVD4
RSVD5
RSVD6
RSVD7
VREF
_RESET
VSS2
VDD
OSCIN
_OSCOUT
VSS
18
36-pin SSOP
36
D+
D-
_RB
RSVD13
XR2
YB2
YT2
XL2
RSVD12
RSVD11
USBV
RSVD10
RSVD9
RSVD8
XL1
YT1
YB1
XR1
19
ScreenCoder, MouseCoder are trademarks of
Semtech Corp. All other trademarks belong to
their respective companies.
Copyright Semtech 2000-2001
DOC7-TS2-U860-DS-101
1
www.semtech.com

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