ur7hcts2-u860 Semtech Corporation, ur7hcts2-u860 Datasheet

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ur7hcts2-u860

Manufacturer Part Number
ur7hcts2-u860
Description
High-performance Usb Touch Screen Controller / Digitizer - Semtech Corporation
Manufacturer
Semtech Corporation
Datasheet
The ScreenCoder
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
ScreenCoder
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
ScreenCoder
portable devices, interactive kiosks
and industrial / custom displays
with integrated touch screens.
The universal features of the
ScreenCoder
implemented in both the system
and the sensor interface, reduce
the development effort and cost of
touch input based systems. The
ScreenCoder
a slim, 36-pin SSOP package.
ScreenCoder, MouseCoder are trademarks of
Semtech Corp. All other trademarks belong to
their respective companies.
Copyright Semtech 2000-2001
DOC7-TS2-U860-DS-101
HID & SYSTEM MANAGEMENT PRODUCTS, MOUSECODER
DESCRIPTION
TM
TM
TM
TM
USB integrates a
USB include
USB, as
USB is available in
TM
USB IC is the
• Controller & digitizer in a single IC
• Interfaces the system via USB
• Works with ANY 4- or 8-wire
• Provides high resolution - 1000
• Accurate, quick touch response
• Handhelds/Notebooks
• Portable Devices
FEATURES
APPLICATIONS
PIN ASSIGNMENTS
1
resistive touch screen regardless
of size, material or vendor
points per axis, enabling IC to
make precise drawing and
signature captures
due to Semtech’s advanced
sampling technology and
algorithms
_OSCOUT
_RESET
RSVD5
RSVD6
RSVD1
RSVD2
RSVD3
RSVD4
RSVD7
OSCIN
VREF
VSS2
VDD
SXR
VSS
SYT
SYB
SXL
1
18
Touch Screen Controller / Digitizer
ScreenCoder
TM
36-pin SSOP
FAMILY
• Highly resistant to RF and other
• No digitizer or external A/D
• Fully compliant with USB HID
• Convienent calibration applet
• Uses slim 36-pin, SSOP package
• Customized versions available
• Interactive Kiosks
• Industrial/Custom Touch Screens
www.semtech.com
High-Performance USB
noise
necessary
specifications; works with native
USB drivers including Windows®
98, Me and 2000
offered free of charge
TM
UR7HCTS2-U860
19
36
YB2
YT2
RSVD13
XR2
XL2
RSVD12
RSVD11
USBV
RSVD10
RSVD9
RSVD8
XL1
YT1
YB1
XR1
D+
D-
_RB

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ur7hcts2-u860 Summary of contents

Page 1

... RSVD6 RSVD7 VREF _RESET VSS2 VDD OSCIN _OSCOUT VSS 18 1 UR7HCTS2-U860 TM High-Performance USB FAMILY • 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 • ...

Page 2

... BLOCK DIAGRAM FOR THE UR7HCTS2-U860 Power Management Section Power -On Reset 16-Bit Timer Oscillator Circuit OSCIN _OSCOUT Copyright Semtech 2000-2001 DOC7-TS2-U860-DS-101 ORDERING CODE Package Options Pitch in mm’s 36-pin, Plastic SSOP 0.8mm Other Materials Type ScreenCoder TM USB Eval Kit Evaluation Kit ...

Page 3

... FUNCTIONAL DESCRIPTION The UR7HCTS2-U860 consists functionally of five major sections (see the Functional Diagram on Page 2). These are the Sensor Interface, the Power Management Section, the 16-Bit Timer, the Oscillator Circuit and the USB Interface. OSCILLATOR This IC has a built-in Oscillator circuit capable of operations with an external 6 ...

Page 4

TOUCH SCREEN SENSOR INTERFACE The ScreenCoder USB can acquire data from any 4- or 8-wire resistive touch screen sensors. The sensor TM interface has the following features: Touch detection The IC periodically checks touch pressure applied to the panel. If ...

Page 5

USB FUNCTIONALITY The ScreenCoder TM USB is a low- speed USB device with remote wake-up capability. The IC asks the system to send report requests every 10ms according to USB specification for low speed device. The ScreenCoder TM USB describes ...

Page 6

... Descriptor Type = String ‘U’,0,’S’, Manufacturer 0,’A’,0, ’R’,0 0x3A Length of string descriptor 0x03 Descriptor type = String ‘S’,0,’c’ “ScreenCoderTM UR7HCTS2-U860” 0,’r’,0, ’e’,0,etc. Value Generic Desktop Pointer Application Pointer Physical Buttons ...

Page 7

... SUGGESTED INTERFACING FOR THE SCREENCODER Copyright Semtech 2000-2001 DOC7-TS2-U860-DS-101 TM USB UR7HCTS2-U860- www.semtech.com ...

Page 8

MECHANICAL INFORMATION FOR DR (36-PIN SSOP) PACKAGE Copyright Semtech 2000-2001 DOC7-TS2-U860-DS-101 Recommended Mounting Pad Dimension in Millimeters Symbol Min ...

Page 9

... Supply Voltage Vdd Input Voltage Vin Current Drain per Pin I (not including Vss or Vdd) Operating Temperature Ta UR7HCTS2-U860 Storage Temperature Range Tstg DC Electrical Characteristics, Temperature range=T low to T high unless otherwise noted) Characteristic Symbol Supply Voltage Output Voltage (10 µA load) Voh Vol ...

Page 10

... SCREENCODER TM USB UR7HCTS2-U860 BILL OF MATERIALS UR7HCTS2-U860-DR BOM Description Quantity Manufacturer Capacitors: C1 Generic C2 1 Generic C3, C4, C5 Generic Connectors Generic ICs USAR U2 1 TelCom Resistors: R1 Generic R3 1 Generic RN1 1 Generic Resonator Panasonic Button: SW1 1 Generic Revised 10/03/00 Copyright Semtech 2000-2001 ...

Page 11

Copyright Semtech 2000-2001 DOC7-TS2-U860-DS-101 Page Left Blank Intentionally 11 www.semtech.com ...

Page 12

... Telephone +49 (0)8161 140 124 Telefax Copyright 2000-2001 Semtech Corporation. All rights reserved. MouseCoder, ScreenCoder and Self-Power Management are trademarks of Semtech Corporation. Semtech is a registered trademark of Semtech Company. All other trademarks belong to their respective companies. INTELLECTUAL PROPERTY DISCLAIMER This specification is provided " ...

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