AR1100 (MTouch) Brd Guide Datasheet by Microchip Technology

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6‘ MICRDCHIP
2011 Microchip Technology Inc. DS41604A
mTouch™ AR1100
Analog Resistive USB and RS-232
Touch Screen Controller Board
Users Guide
QUALITY MANAGEMENT SYSTEM CERTIFIED BY DNV = ISO/TS 169492009: (2
DS41604A-page 2 2011 Microchip Technology Inc.
Information contained in this publication regarding device
applications and the like is provided only for your convenience
and may be superseded by updates. It is your responsibility to
ensure that your application meets with your specifications.
MICROCHIP MAKES NO REPRESENTATIONS OR
WARRANTIES OF ANY KIND WHETHER EXPRESS OR
IMPLIED, WRITTEN OR ORAL, STATUTORY OR
OTHERWISE, RELATED TO THE INFORMATION,
INCLUDING BUT NOT LIMITED TO ITS CONDITION,
QUALITY, PERFORMANCE, MERCHANTABILITY OR
FITNESS FOR PURPOSE. Microchip disclaims all liability
arising from this information and its use. Use of Microchip
devices in life support and/or safety applications is entirely at
the buyer’s risk, and the buyer agrees to defend, indemnify and
hold harmless Microchip from any and all damages, claims,
suits, or expenses resulting from such use. No licenses are
conveyed, implicitly or otherwise, under any Microchip
intellectual property rights.
Trademarks
The Microchip name and logo, the Microchip logo, dsPIC,
KEELOQ, KEELOQ logo, MPLAB, PIC, PICmicro, PICSTART,
PIC32 logo, rfPIC and UNI/O are registered trademarks of
Microchip Technology Incorporated in the U.S.A. and other
countries.
FilterLab, Hampshire, HI-TECH C, Linear Active Thermistor,
MXDEV, MXLAB, SEEVAL and The Embedded Control
Solutions Company are registered trademarks of Microchip
Technology Incorporated in the U.S.A.
Analog-for-the-Digital Age, Application Maestro, chipKIT,
chipKIT logo, CodeGuard, dsPICDEM, dsPICDEM.net,
dsPICworks, dsSPEAK, ECAN, ECONOMONITOR,
FanSense, HI-TIDE, In-Circuit Serial Programming, ICSP,
Mindi, MiWi, MPASM, MPLAB Certified logo, MPLIB,
MPLINK, mTouch, Omniscient Code Generation, PICC,
PICC-18, PICDEM, PICDEM.net, PICkit, PICtail, REAL ICE,
rfLAB, Select Mode, Total Endurance, TSHARC,
UniWinDriver, WiperLock and ZENA are trademarks of
Microchip Technology Incorporated in the U.S.A. and other
countries.
SQTP is a service mark of Microchip Technology Incorporated
in the U.S.A.
All other trademarks mentioned herein are property of their
respective companies.
© 2011, Microchip Technology Incorporated, Printed in the
U.S.A., All Rights Reserved.
Printed on recycled paper.
ISBN: 978-1-61341-491-0
Note the following details of the code protection feature on Microchip devices:
Microchip products meet the specification contained in their particular Microchip Data Sheet.
Microchip believes that its family of products is one of the most secure families of its kind on the market today, when used in the
intended manner and under normal conditions.
There are dishonest and possibly illegal methods used to breach the code protection feature. All of these methods, to our
knowledge, require using the Microchip products in a manner outside the operating specifications contained in Microchip’s Data
Sheets. Most likely, the person doing so is engaged in theft of intellectual property.
Microchip is willing to work with the customer who is concerned about the integrity of their code.
Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code. Code protection does not
mean that we are guaranteeing the product as “unbreakable.”
Code protection is constantly evolving. We at Microchip are committed to continuously improving the code protection features of our
products. Attempts to break Microchip’s code protection feature may be a violation of the Digital Millennium Copyright Act. If such acts
allow unauthorized access to your software or other copyrighted work, you may have a right to sue for relief under that Act.
Microchip received ISO/TS-16949:2009 certification for its worldwide
headquarters, design and wafer fabrication facilities in Chandler and
Tempe, Arizona; Gresham, Oregon and design centers in California
and India. The Company’s quality system processes and procedures
are for its PIC® MCUs and dsPIC® DSCs, KEELOQ® code hopping
devices, Serial EEPROMs, microperipherals, nonvolatile memory and
analog products. In addition, Microchip’s quality system for the design
and manufacture of development systems is ISO 9001:2000 certified.
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mTouch™ AR1100 Users Guide
2011 Microchip Technology Inc. DS41604A-page 3
Table of Contents
Preface ........................................................................................................................... 5
Introduction............................................................................................................ 5
Document Layout .................................................................................................. 6
Recommended Reading........................................................................................ 6
The Microchip Web Site ........................................................................................ 6
Customer Support ................................................................................................. 7
Document Revision History ................................................................................... 7
Chapter 1. Product Overview
1.1 Introduction ..................................................................................................... 9
1.2 Product Description ........................................................................................ 9
Chapter 2. Connections
2.1 Mounting ....................................................................................................... 13
2.2 Power .......................................................................................................... 13
2.3 Communication ............................................................................................ 14
2.4 Sensor .......................................................................................................... 16
Chapter 3. Operation
3.1 Configuration ................................................................................................ 19
3.2 Communication ............................................................................................ 19
3.3 Data Format ................................................................................................. 19
3.4 LED Indicator ................................................................................................ 21
Chapter 4. Software Device Drivers
Chapter 5. Accessories
5.1 Communication Cables ................................................................................ 25
5.2 Touch Screen Cables ................................................................................... 25
Chapter 6. Support
Chapter 7. Touch Screen Selection
Index ............................................................................................................................. 31
Worldwide Sales and Service ....................................................................................32
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Preface
INTRODUCTION
This chapter contains the general information that will be useful to know before using
the mTouch™ AR1100 Analog Resistive USB and RS-232 Touch Screen Controller
Board. Items discussed in this chapter include:
Document Layout
Recommended Reading
The Microchip Web Site
Customer Support
Document Revision History
NOTICE TO CUSTOMERS
All documentation becomes dated, and this manual is no exception. Microchip tools and
documentation are constantly evolving to meet customer needs, so some actual dialogs
and/or tool descriptions may differ from those in this document. Please refer to our web site
(www.microchip.com) to obtain the latest documentation available.
Documents are identified with a “DS” number. This number is located on the bottom of each
page, in front of the page number. The numbering convention for the DS number is
“DSXXXXXA”, where “XXXXX” is the document number and “A” is the revision level of the
document.
For the most up-to-date information on development tools, see the MPLAB® IDE on-line help.
Select the Help menu, and then Topics to open a list of available online help files.
mTouch™ AR1100 User’s Guide
DS41604A-page 6 2011 Microchip Technology Inc.
DOCUMENT LAYOUT
This document describes how to use the mTouch™ AR1100 Analog Resistive USB and
RS-232 Touch Screen Controller Board. The manual layout is as follows:
Chapter 1. “Product Overview”
Chapter 2. “Connections”
Chapter 3. “Operation”
Chapter 4. “Software Device Drivers”
Chapter 5. “Accessories
Chapter 6. “Support”
Chapter 7. “Touch Screen Selection”
RECOMMENDED READING
This user’s guide describes how to use the mTouch™ AR1100 Analog Resistive USB
and RS-232 Touch Screen Controller Board. Other useful documents are listed below.
The following Microchip documents are available and recommended as supplemental
reference resources.
Readme for mTouch™ AR1100 Analog Resistive USB and RS-232 Touch Screen
Controller Board
For the latest information on using mTouch™ AR1100 Analog Resistive USB and
RS-232 Touch Screen Controller Board, read theReadme.txt” file in the main instal-
lation directory. The Readme file contains updated information and known issues that
may not be included in this user’s guide.
Readme Files
For the latest information on using other tools, read the tool-specific Readme files in
the Readme subdirectory of the MPLAB IDE installation directory. The Readme files
contain update information and known issues that may not be included in this user’s
guide.
THE MICROCHIP WEB SITE
Microchip provides online support through our web site at www.microchip.com.This
web site is used as a means to make files and information easily available to
customers. Accessible by using your favorite Internet browser, the web site contains
the following information:
Product Support Data sheets and errata, application notes and sample
programs, design resources, user’s guides and hardware support documents,
latest software releases and archived software
General Technical Support – Frequently Asked Questions (FAQs), technical
support requests, online discussion groups, Microchip consultant program
member listing
Business of Microchip Product selector and ordering guides, latest Microchip
press releases, listing of seminars and events, listings of Microchip sales offices,
distributors and factory representatives
Preface
2011 Microchip Technology Inc. DS41604A-page 7
CUSTOMER SUPPORT
Users of Microchip products can receive assistance through several channels:
Distributor or Representative
Local Sales Office
Field Application Engineer (FAE)
Technical Support
Customers should contact their distributor, representative or field application engineer
(FAE) for support. Local sales offices are also available to help customers. A listing of
sales offices and locations is included in the back of this document.
Technical support is available through the web site at: http://support.microchip.com
DOCUMENT REVISION HISTORY
Revision A (August 2011)
Initial release of this document.
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mTouch™ AR1100 Users Guide
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Chapter 1. Product Overview
1.1 INTRODUCTION
The Microchip mTouchTM AR1100 Analog Resistive USB and RS-232 Touch Screen
Controller Board represents a feature-rich, fully-integrated universal touch screen
controller solution. The AR1100 Touch Screen Controller Board automatically selects
between USB and RS-232 communication protocols, as well as supports 4, 5 or 8-wire
analog resistive touch screens from any of a variety of touch screen manufacturers.
The AR1100 Touch Screen Controller Board dynamically adapts to the various touch
screen electrical characteristics such as sensitivity, contact resistance, and
capacitance to provide optimal performance with minimal design time.
Building on the AR1000 series, the new AR1100 Touch Screen Controller Board offers
customers an easy to integrate solution for low-cost, high-performing resistive touch
with the advantages of USB plug and play, support for USB mouse or digitizer,
advanced touch response and accuracy, field-flash updatability, and free drivers for
most operating systems to enable low-risk designs for a wide variety of touch sensing
requirements.
The AR1100 Touch Screen Controller Board supports large displays like industrial con-
trols, self-service kiosks, and POS terminals, as well as smaller tablet displays, hand-
held consumer devices, and medical devices.
Resistive touch provides the advantages of easy integration, low total system cost and
acceptance of finger, glove or stylus input, and USB communication is the industry
standard for attaching peripherals to a computer. The AR1100 Touch Screen Controller
Board is an easy-to-integrate touch screen controller that meets all of these needs in a
single-chip solution or production ready-board product. The device comes with free
drivers for most major operating systems, making it easy for designers to quickly create
low-risk touch interface solutions.
1.2 PRODUCT DESCRIPTION
The mTouch™ AR1100 Touch Screen Controller Board auto-detects communication
(RS-232 or USB) and uses a jumper to select between 5-wire and 4/8-wire analog
resistive touch screens. The AR1100 Touch Screen Controller Board is ready to go out
of the box with little or no configuration.
1.2.1 Part Number
AR1100BRD
1.2.2 AR1100 Core Features:
•RoHS Compliant
Automatically detects communication type
- RS-232 (9600 BAUD) and USB (2.0 Compliant)
- Full-speed USB device HID compliant at 12 Mb/sec.
- Low-power Suspend mode for USB < 500 uA
- Low-power Sleep mode for RS-232 <10 uA
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USB plug and play
- USB mouse (HID-MOUSE) or
- Single-touch Win7 digitizer (HID-DIGITIZER)
Jumper-selectable sensor support
-5 wire
- 4/8 wire
Dynamic rise-time and sampling capability
Resolution:
- 10-bit measurement (1024x1024)
- 12-bit reporting (4096x4096) of processed touch coordinates
- Report rate: 150 rps (typical)
- Touch screen resistance – 2k ohm sheet resistance lead to lead.
- Calibration data stored on local EEPROM
- User EEPROM available – 96 bytes
- Flash/Data EEPROM retention: >40 years
- Industry-leading touch response and accuracy
- ESD protection – both communication and touch screen connections
Static Protection: 24 kVA
1.2.3 Mechanical
1.2.3.1 DIMENSIONS
FIGURE 1-1: PCB – MECHANICAL DRAWING
Product Overview
2011 Microchip Technology Inc. DS41604A-page 11
TABLE 1-1: PCB – MECHANICAL DIMENSIONS
Units: Millimeters Inches
Dimension Limits: MIN. NOM. MAX. MIN. NOM. MAX.
Overall Length D 67.51 69.02 70.56 2.658 2.718 2.778
Overall Width E 24.28 25.81 27.33 0.956 1.016 1.076
PCB Length D1 52.07 53.59 55.12 2.050 2.110 2.17
PCB Width E1 2.29 24.38 25.91 0.090 0.960 1.02
Overall Height A 11.63 0.458
PCB Thickness A1 1.42 15.75 1.73 0.056 0.620 0.068
Component Height A2 6.35 7.87 0.250 0.310
Through Hole Lead Trim Length A3 2.03 0.080
Note 1: Passive components omitted from some views for clarity.
2: Dimensions and tolerances per ASME Y14.5M.
BSC: Basic Dimension. Theoretically exact value shown without tolerances.
REF: Reference Dimension, usually without tolerance, for information purposes
only.
WARNING
Although Microchip Technology Inc. has taken steps to protect your touch screen controller
from transient voltage, it is important to make all grounding, communication and touch screen
connections to the controller and touch screen. This must be done before powering on your
computer, video monitor or touch screen controller. Failure to follow this procedure may result
in damage to your controller and/or communication port. If you believe that your application
will require additional static protection, it is up to you to determine the appropriate static
protection needed to protect your electronics from transient voltage.
Failure to take the necessary precautions may result in damage to your controller.
Microchip does not warranty the Microchip controller board against transient static dis-
charge damage.
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1.2.4 Electrical
TABLE 1-2: PCB – ELECTRICAL SPECIFICATIONS
Conditions Min. Typical Max. Units
Supply Voltage 3.3 5.0 V
Supply Current RS-232 (idle) 16 mA
RS-232 (touch) 18
USB (idle) 17
USB (touch) 25
Suspend Current RS232 10 µA
USB 330
Operating temperature Chip -40 125 °C
Board -25 85 °C
Resolution VCC: +5V, VDD: Gnd 1024 x 1024 Pixels
Response Time Normal 8 ms
Waking 10
Detect Voltage Threshold 1.65 V
Touch Screen Resistance 2000
Touch Capacitance 0 0.5 µF
Note 1: Additional literature is available from Microchip Technology Inc. – definitions,
specifications, and other general touch screen information.
MICROCHIP COMMUNICATION «”1" Grounded Mounting Hole (0.122” Dla‘) MODE JUMPER 1mm, ‘WIRE FFC (flat flex connector) "SENSOR" TOUCH SCREEN 9?:zsé NQVIQN~ 33 » 50v — v. z skouuo — GND 1 I I l— I— 1— T 1—
mTouch™ AR1100 Users Guide
2011 Microchip Technology Inc. DS41604A-page 13
Chapter 2. Connections
FIGURE 2-1: CONNECTIONS – OVERVIEW
2.1 MOUNTING
Two static ground mounting holes (0.122" diameter) are provided. Take special care to
insulate the controller from system and from EMI and RFI generating components of
the display. Use conductive 4-40 stand-offs or ground-lead wires terminated to the
grounded system enclosure or PC board to insure proper static protection and
grounding. STANDOFFS MUST NOT TOUCH ANY PORTION OF THE CIRCUIT.
Position the controller in a location that minimizes bending or creasing of the touch
screen overlay connection tail. Wear to the tail, printed traces, or tail header will
negatively impact touch screen performance.
2.2 POWER
Power to the AR1100 Touch Screen Controller Board is provided by the H1
communication connector as seen in Figure 2-2. In USB Communication mode, power
can be derived from the USB bus. In RS-232 mode – regulated power (3.3V – 5.0V) is
provided from an external source. Check connections before applying power to the
controller as reversing polarity WILL damage the board.
FIGURE 2-2: POWER
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If the Microchip AR1100 Touch Screen Controller Board is installed into a monitor appli-
cation where the end user will decide to use USB communication or RS-232 commu-
nication, the board must be powered internally. Because the board cannot be supplied
with power from USB and internal 5V, it is recommended that the power (pin 1) contact
be removed from the USB socket to insure that multiple power source connections are
not permitted.
2.3 COMMUNICATION
The AR1100 Touch Screen Controller Board will automatically detect and configure
itself for the active communication protocol – RS-232 or USB HID. The controller will
default to RS-232 communication until USB activity is detected. Once the active
communication mode is determined, the inactive mode is decommissioned to minimize
power consumption. The active communication will remain in effect until power is
removed from the controller.
2.3.1 RS-232
Microchip cable harness p/n: C72-080S1F-09XDXF is a standard 6' long, round
shielded cable terminated by a DB-9 female connector and an 8-position single-row
socket. This cable has a ground termination wire running the length of the cable which
may be utilized to ground the controller board through the DB-9 connector. In any case,
for best performance, a jacketed, shielded cable is recommended.
FIGURE 2-3: RS-232 CONNECTIONS
WARNING
SUPPLYING POWER FROM TWO DIFFERENT POWER SOURCES WILL
PERMANENTLY DESTROY YOUR CONTROLLER, YOUR COMPUTER, OR YOUR
MONITOR.
87654321 DCXXWDWD MNRT 4 321 j m
Connections
2011 Microchip Technology Inc. DS41604A-page 15
2.3.2 USB
Microchip cable harness p/n: C72-080S1F-04XAXM-D is a 6' long, jacketed shielded
cable terminated by a Type “A” USB plug and an 8-position, single-row socket. DO NOT
SUPPLY POWER FROM BOTH RS-232 AND USB.
FIGURE 2-4: USB
If the Microchip AR1100 Touch Screen Controller Board is installed into a monitor appli-
cation where the end user will decide to use USB communication or RS-232 commu-
nication, the board must be powered internally. Because the board cannot be supplied
with power from USB and internal 5V, it is recommended that the power (pin 1) contact
be removed from the USB socket to insure that multiple power source connections are
not permitted.
WARNING
SUPPLYING POWER FROM TWO DIFFERENT POWER SOURCES COULD
PERMANENTLY DAMAGE YOUR CONTROLLER, YOUR COMPUTER, AND/OR
YOUR MONITOR.
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mTouch™ AR1100 User’s Guide
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2.4 SENSOR
The AR1100 Touch Screen Controller Board supports 4, 5 and 8-wire sensors. A 2x8
pin header (“SENSOR”) seen in the mechanical diagram is the connection point for all
3 sensor types. Additionally, a 4-conductor flat flex connector can be used with 4-wire
sensors. An illustration of sensor wiring/construction is given below for reference (see
Figure 2-5).
FIGURE 2-5: SENSOR CONNECTIONS
2.4.1 Connector: “4WZIF” – 4-Conductor FFC (flat flex)
JST part number: JST-04FM-1.st (LF)(SN) (4-position low insertion force flat flex
connector)
TABLE 2-1: 4WZIF PIN ASSIGNMENTS
PIN# FUNCTION
1Y-
2X-
3Y+
4X+
4W”! Pin 31 SENSOR n 4 WIRE SWNE SENSOR :2 § |h 3W"! SENSOR WIRE
Connections
2011 Microchip Technology Inc. DS41604A-page 17
2.4.2 Connector: ‘SENSOR’ – 2x8 Header
Sullins part number: PTC08DBAN. 2 x 8, 0.100" spacing, .024" sq.post, .230" mating
length.
FIGURE 2-6: SENSOR CONNECTIONS
TABLE 2-2: SENSOR PIN ASSIGNMENTS
Function Pin# Function
Y+ 1 2 Y-
X+ 3 4 SY-
5WSX- 5 6 SY+
X- 7 8 Y+
Y- 9 10 X-
X- 11 12 5WSX-
Y+ 13 14 SX+
X+ 15 16 X+
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Chapter 3. Operation
3.1 CONFIGURATION
The AR1100 Touch Screen Controller Board is operational out of the box.
Communication protocol is detected automatically (as described below) and the
Mechanical mode jumper selects between 5-wire (jumper on) and 4/8-wire (jumper off).
If a USB cable is connected, the AR1100 Touch Screen Controller Board will default to
Mouse mode (HID-MOUSE). Additional configuration is possible (but generally, not
necessary) using commands described in the AR1100 IC data sheet. The Microchip AR
Configuration Utility Software can be used with the AR1100 Touch Screen Controller
Board to modify (fine tune) operational parameters, change the ‘default’ USB device or
actually update the control firmware. Any change made to the factory defaults is saved
to internal, nonvolatile memory.
3.2 COMMUNICATION
The AR1100 Touch Screen Controller Board supports both RS-232 and USB. The con-
troller will automatically detect and select between the two at power-up. The USB sup-
port is further defined to be one of three devices – HID-GENERIC, HID-MOUSE or
HID-DIGITIZER – the controller can be configured to power-up as any of the three
devices but the factory default is HID-MOUSE.
3.3 DATA FORMAT
The touch report data format for each communication protocol is defined below. The
HID-MOUSE and HID-DIGITIZER are compatible with intrinsic drivers of Windows® XP
and Windows 7, respectively. The HID-GENERIC and RS-232 protocols require
custom handling.
3.3.1 Mode: HID-GENERIC, RS-232
TABLE 3-1: TOUCH REPORT FORMAT – GENERIC
BYTE BIT
7654321 0
1 1 RRR RRR P
2 0 X6 X5 X4 X3 X2 X1 X0
30 0X11X10X9X8X7X6
4 0 Y6 Y5 Y4 Y3 Y2 Y1 Y0
50 0Y11Y10Y9Y8Y7Y6
Note 1: P Pen state 1: Pen down; 0: Pen up
R (Reserved)
X X ordinate of touch location (12 bits)
Y Y ordinate of touch location (12 bits)
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3.3.2 Mode: HID-MOUSE
The USB ‘report’ format is given below:
As seen in Table 3-2 above, the AR1100 Touch Screen Controller Board provides flex-
ibility to the ‘Button 1’ field in the HID-MOUSE touch report. The value of ‘Button 1’ and
the touch reports issued in reaction to touch events is dictated by the operational
parameter, TouchMode, (described in the AR1100 Resistive USB and RS-232 Touch
Screen Controller data sheet, DS41606). In the summary below, touch report field “P”
(pen) corresponds to ‘Button 1’.
3.3.2.1 SUMMARY OF PARAMETER: TouchMode
In reaction to each touch state/event, the AR1100 issues 0,1,2 or 3 touch reports with
pen state “P” (a 1-bit field) set as described below.
TABLE 3-2: TOUCH REPORT FORMAT – MOUSE
BYTE BIT
7654321 0
1 0 0 0 0 0 B3 B2 B1
2X7X6X5X4X3X2X1X0
30 000 X11X10X9X8
4Y7Y6Y5Y4Y3Y2Y1Y0
50 000 Y11Y10Y9Y8
Note 1: B1 Button 1 depressed (configurable, reacts to touch event/state (see
the description below)
B2 Button 2 depressed (always 0)
B3 Button 3 depressed (always 0)
X X ordinate of touch location (12 bits)
Y Y ordinate of touch location (12 bits)
TouchMode[7:5] = PD[2:0] Response to event PD (PEN/TOUCH DOWN)
b000 No touch report issued in response to the event
b001 Touch report w/ P=0
b010 Touch report w/ P=1
b011 Touch report w/ P=1, then Touch report w/ P=0
b100 Touch report w/ P=0, then Touch report w/ P=1, then Touch report w/ P=0
b101 Touch report w/ P=0, then Touch report w/ P=1
TouchMode[4:3] = PM[1:0] Response to event PM (PEN/TOUCH MOVEMENT)
b000 No touch report issued in response to the event
b001 Touch report w/ P=0
b010 Touch report w/ P=1
Operation
2011 Microchip Technology Inc. DS41604A-page 21
3.3.3 Mode: HID-DIGITIZER
The USB ‘report’ format is given below:
For flexibility, the value and behavior of the ‘tip switch’ data entity (“T”) reflects the pen
up/down state (similar to the ‘Button 1’ description in HID-MOUSE mode.
3.4 LED INDICATOR
The Microchip AR1100 Touch Screen Controller Board is equipped with a LED indicator
to display controller status as follows:
TouchMode[2:0] = PU[2:0] Response to event PU (PEN/TOUCH UP)
b000 No touch report issued in response to the event
b001 Touch report w/ P=0
b010 Touch report w/ P=1
b011 Touch report w/ P=1, then Touch report w/ P=0
b100 Touch report w/ P=0, then Touch report w/ P=1, then Touch report w/ P=0
b101 Touch report w/ P=0, then Touch report w/ P=1
TABLE 3-3: TOUCH REPORT FORMAT – DIGITIZER
BYTE BIT
7654321 0
1000000PT
200000000
3X7X6X5X4X3X2X1X0
40000X11X10X9X8
5Y7Y6Y5Y4Y3Y2Y1Y0
60000Y11Y10Y9Y8
Note 1: T1 Tip switch
P Proximity (in range) – always 1
X X ordinate of touch location (12 bits)
Y Y ordinate of touch location (12 bits)
TABLE 3-4: LED INDICATOR
Behavior Status
LED blinks slowly (once per second) Controller is powered, awake
and no touch is detected.
LED blinks rapidly (5 times per second) Controller detects a touch.
LED is off Controller has no power or is
asleep (suspended).
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Chapter 4. Software Device Drivers
Microchip Technology has device driver software available for all AR1100 touch screen
controller chip and board solutions.
The software drivers may be downloaded at no additional charge at: www.micro-
chip.com/mtouch
The Microchip device driver software enables you to configure the touch screen
operation to meet your needs. The following is a list of features available with
Microchip’s software:
1. Touch screen calibration/linearization/alignment (4, 9, 25-point)
2. Adjustable calibration inset
3. Touch modes:
-Normal mouse emulation
-Touch-Up mode
-Touch-Down mode
4. Other special features are also included. Please see the complete driver
manuals available at the www.microchip.com web site for further details.
Note: Microchip device drivers vary between operating systems and operating
system varieties and versions.
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Chapter 5. Accessories
5.1 COMMUNICATION CABLES
5.2 TOUCH SCREEN CABLES
TABLE 5-1: COMMUNICATION CABLES
Part Number Description
C72-080S1F-09XDXF 6' RS-232 cable. Female DB9 to 8-position SIP socket
Direct connect to H1 header
C72-080S1F-04XAXM-D 6' USB cable. Male type A USB to 8-postion SIP socket
Direct connect to H1 header
TABLE 5-2: TOUCH SCREEN CABLES
Part Number Description
C18-040S1F-040G1M 4-Wire – 18", 4-position, 0.100" SIP header to SIP socket.
Direct connect to SENSOR header
C18-050S1F-050G1M 5-Wire – 18", 5-position, 0.100" SIP header to SIP socket
Direct connect to SENSOR header
C18-080S1F-080G1M 8-Wire – 18", 8-position, 0.100" SIP header to SIP socket
Direct connect to SENSOR header
C12-040S1F-041Z1F 4-Wire – 12", 4-position, 0.100" socket to 1 mm flat flex
conector.
Direct connect to flat flex connector
10022-100 6" 4-wire touch screen ‘crossover cable, 4-position SIP
socket to SIP header
Direct connect to SENSOR header
10023-100 6" 5-wire touch screen ‘crossover cable, 5-position SIP
socket to SIP header
Direct connect to SENSOR header
10024-100 6" 8-wire touch screen ‘crossover cable, 8-position SIP
socket to SIP header
Direct connect to SENSOR header
mTouch™ AR1100 User’s Guide
DS41604A-page 26 2011 Microchip Technology Inc.
NOTES:
Q MICRDCHIP
mTouch™ AR1100 Users Guide
2011 Microchip Technology Inc. DS41604A-page 27
Chapter 6. Support
Webticket Support System: http://support.microchip.com
In the event that you need to contact Microchip via telephone or via our support e-mail,
please take a minute to identify these items prior to contacting Microchip technical
support staff.
Information about Microchip reseller, if not purchased directly from Microchip
Touch Screen type and Manufacturer
Communication type
Microchip driver and revision
Operating system and service pack releases
A brief summary of the problem that you are having
mTouch™ AR1100 User’s Guide
DS41604A-page 28 2011 Microchip Technology Inc.
NOTES:
Q MICRDCHIP
mTouch™ AR1100 Users Guide
2011 Microchip Technology Inc. DS41604A-page 29
Chapter 7. Touch Screen Selection
The 4 and 8-wire touch screens are typically produced with higher resistance
transparent conductive film (ITO Indium Tin Oxide) than 5-wire touch screens. Most
often, touch screen resistance falls within 100-400 Ohm per square. Because 4 and
8-wire touch screens typically have a higher resistance than 5-wire sensors, you will
find most battery-powered applications using this technology. You will also find that 4
and 8-wire touch screens are more linear than 5-wire ones.
The 5-wire touch screens are typically more mechanically durable (top sheet does not
need to be linear) and are less affected by environmental variation. 5-wire touch
screens come in a wide variety of sheet resistance. In some cases, because of the
5-wire construction, the resistance may be lower than the 50 Ohm specification. While
these touch screens require more power to drive them, this does not imply poor quality.
Once resistance drops below an optimum level, so does the resolution. In contrast, as
resistance increases, depending upon the construction, contact resistance begins to
negatively affect the touch screen’s performance. The negative effect of a high or low
resistance touch screen can be managed by properly implementing the correct circuit.
It should be understood that extremes in either direction will negatively influence the
performance of any efficient circuit design. In order to maximize efficiency and
performance, a higher resistance, linear, environmentally stable touch screen is
recommended.
Your product design requirements will help you identify the touch screen technology
and construction that will best suit your application. Please contact Microchip
Technology Inc. for more unbiased touch screen material science information and a list
of recommended Microchip controller designs to fit your application.
mTouch™ AR1100 User’s Guide
DS41604A-page 30 2011 Microchip Technology Inc.
NOTES:
Q MICRDCHIP
mTouch™ AR1100 Users Guide
2011 Microchip Technology Inc. DS41604A-page 31
Index
A
Accessories.............................................................. 25
AR1100 Core Features .............................................. 9
AR1100BRD .............................................................. 9
C
Communication ...................................................14, 19
Communication Cables............................................ 25
Configuration............................................................ 19
Connections ............................................................. 13
Customer Support...................................................6, 7
D
Data Format ............................................................. 19
Document Layout....................................................... 6
Documentation Layout............................................... 6
Documentation Revision History................................ 6
E
Electrical .................................................................. 12
I
Internet Address......................................................... 6
Introduction .............................................................5, 9
L
LED Indicator ........................................................... 19
M
Mechanical............................................................... 10
Microchip Internet Web Site....................................... 6
Mode
HID-DIGITIZER................................................. 21
HID-GENERIC, RS-232.................................... 19
HID-MOUSE ..................................................... 20
Mounting .................................................................. 13
O
Operation ................................................................. 19
P
Power....................................................................... 13
Preface....................................................................... 5
Product Description.................................................... 9
Product Overview....................................................... 9
R
Reading, Recommended ........................................... 6
Recommended Reading ............................................ 6
S
Sensor...................................................................... 16
Software Device Drivers........................................... 23
Support .................................................................... 27
T
The Microchip Web Site............................................. 6
Touch Screen Cables............................................... 25
Touch Screen Selection........................................... 29
W
WWW Address........................................................... 6
6‘ ‘MICRDCHIP
DS41604A-page 32 2011 Microchip Technology Inc.
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Worldwide Sales and Service
08/02/11

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