Microchip Technology AR1100 User’s Guide
mTouch™ AR1100
Analog Resistive USB and RS-232
Touch Screen Controller Board
User’s Guide
2011 Microchip Technology Inc. DS41604A
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ISBN: 978-1-61341-491-0
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code hopping
DS41604A-page 2 2011 Microchip Technology Inc.
mTouch™ AR1100 User’s Guide
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 Communic a ti o n ............ ............... ................................................................. 14
2.4 Sensor ........ ............................................................................................... ... 1 6
Chapter 3. Operation
3.1 Configur ation .............. ............................................................................... .. . 19
3.2 Communic a ti o n ............ ............... ................................................................. 19
3.3 Data Forma t ............. ....................................................... ............................. 1 9
3.4 LED Indica t o r ......... ........................................ .. .. ........................................... 2 1
Chapter 4. Software Device Drivers
Chapter 5. Accessories
5.1 Communic a ti o n Ca b le s ................................................................................ 25
5.2 Touch Scre e n C a bl e s ..................................................................... .............. 25
Chapter 6. Support
Chapter 7. Touch Screen Sel ection
Index .............................................................................................................................31
Worldwide Sales and Service ....................................................................................32
2011 Microchip Technology Inc. DS41604A-page 3
mTouch™ AR1100 User’s Guide
NOTES:
DS41604A-page 4 2011 Microchip Technology Inc.
mTouch™ AR1100 User’s Guide
Preface
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 p age 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
Select the Help menu, and then Topics to open a list of available online help files.
INTRODUCTION
This chapter conta ins the gener al infor mati on that will b e use ful to kno w befor e usin g
the mTouc h™ AR1100 Ana log Resistive USB and RS-232 Tou ch Screen Controller
Board. Items discussed in this chapter include:
• Document Layout
• Recommended Reading
• The Microchip Web Site
• Customer Support
• Document Revision History
®
IDE on-line help.
2011 Microchip Technology Inc. DS41604A-page 5
mTouch™ AR1100 User’s Guide
DOCUMENT LAYOUT
This document describes how to use the mT ouch™ AR1 100 Analog Resistive USB and
RS-232 Touch Screen Controller Board. The manual layout is as follows:
• Chapter 1. “Product Overview”
• Chapter 2. “Connect ion s”
• Chapter 3. “Operation”
• Chapter 4. “Software Device Drivers”
• Chapter 5. “Access ories ”
• Chapter 6. “Support”
• Chapter 7. “Touch Screen Selection”
RECOMMENDED READING
This user’s gui de descr ibes how to use the m Touch™ AR110 0 Analo g Resisti ve USB
and RS-232 Touch Screen Controller Board. Other useful documents are listed below.
The following Microc hi p d ocu men ts are av ai la ble an d r ec omm end ed as su ppl em ental
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 T ouch Screen Controller Board, read the “Readme.txt” file in the main i nst al 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 MICROCHI P WEB SITE
Microchip provides o nline support through our web site at www.micr ochip.com.This
web site is used as a means to make files and information easily available to
customers. Acces sible by using your favo rite Internet browse r, 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 listin g
• Business of Microchip – Product selector and ordering guides, latest Microchi p
press releases, list ing of seminars and events, listings of Microchip sal es offices,
distributors and factory representatives
DS41604A-page 6 2011 Microchip Technology Inc.
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.
Preface
2011 Microchip Technology Inc. DS41604 A-page 7
mTouch™ AR1100 User’s Guide
NOTES:
DS41604A-page 8 2011 Microchip Technology Inc.
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 T ouch 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 controls, self-service kiosks, and POS terminals, as well as smaller tablet displays, handheld 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.
mTouch™ AR1100 User’s Guide
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 Feat ures:
•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
2011 Microchip Technology Inc. DS41604A-page 9
mTouch™ AR1100 User’s Guide
• 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
DS41604A-page 10 2011 Microchip Technology Inc.
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