Microchip Technology AT42QT1010 User manual

AT42QT1010
AT42QT1010 - Evaluation Kit User's Guide
Preface
Important: 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 website
(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 online help.
Select the Help menu, and then Topics to open a list of available online help files.
Introduction
The AT42QT1010 Evaluation Kit shows touch and proximity capabilities of the AT42QT series of touch
turnkey products.
The kit has one self-capacitance touch button with the option to connect an external sensing electrode
using SMD test pad (TP). An on-board LED indicates the touch status.
Recommended Reading
For the latest information on the device, refer to https://www.microchip.com/wwwproducts/en/
AT42QT1010.
© 2018 Microchip Technology Inc. User Guide DS40002062A-page 1

Table of Contents
Preface............................................................................................................................ 1
1. Introduction................................................................................................................3
1.1. Features and Overview................................................................................................................ 3
1.2. Functional Block Diagram............................................................................................................ 3
2. Getting Started.......................................................................................................... 4
2.1. Quick Start....................................................................................................................................4
2.2. Touch Status LED.........................................................................................................................4
3. User Guide................................................................................................................ 5
3.1. Powering the Board......................................................................................................................5
3.2. Operation Modes..........................................................................................................................5
4. Documentation and Relevant Links...........................................................................6
5. Hardware Revision History and Known Issues..........................................................7
5.1. Identifying Product ID and Revision............................................................................................. 7
5.2. Revision 4.....................................................................................................................................7
6. Document Revision History ...................................................................................... 8
The Microchip Web Site.................................................................................................. 9
Customer Change Notification Service............................................................................9
Customer Support........................................................................................................... 9
Microchip Devices Code Protection Feature................................................................... 9
Legal Notice...................................................................................................................10
Trademarks................................................................................................................... 10
Quality Management System Certified by DNV.............................................................11
Worldwide Sales and Service........................................................................................12
AT42QT1010
© 2018 Microchip Technology Inc. User Guide DS40002062A-page 2

1. Introduction
1.1 Features and Overview
• One Touch Sensor – configurable as either a single key or a proximity sensor (configurable
sensitivity)
• Option to Connect External Sensing Electrode
• Mode of Operations:
– Sync
– Normal
– Low Power
• Technology: Spread-Spectrum Charge-Transfer (Direct mode)
• Status LED to indicate Touch
• On-Board Self-Capacitance Sensor
– size: 9x16 mm
• USB Power Input
1.2 Functional Block Diagram
Figure 1-1. Functional Block Diagram
AT42QT1010
Self-
capacitance
Line Power-in
Sensor
Status
Sensor
Button
Test Pin for
External Sensor
AT42QT1010
Introduction
© 2018 Microchip Technology Inc. User Guide DS40002062A-page 3

2. Getting Started
2.1 Quick Start
Figure 2-1. Quick Start
AT42QT1010
USB Connector Sensor
Mode Select
Touch Status LED
2.2 Touch Status LED
By default, the LED will illuminate during power-up and will turn off upon touching the self-capacitance
key.
AT42QT1010
Getting Started
© 2018 Microchip Technology Inc. User Guide DS40002062A-page 4

3. User Guide
3.1 Powering the Board
The kit is powered from the micro-USB connector. The kit can be powered by connecting the micro-USB
cable to the USB connector on the board and to the computer.
On initial power-up, the QT1010 requires approximately 100 ms to power on, to allow power supplies to
stabilize. During this time, the OUT-pin state is not valid and should be ignored.
3.2 Operation Modes
The kit operates in three different operation modes, which depend on the state of the SYNC pin (High or
Low).
3.2.1 Fast Mode
The QT1010 runs in Fast mode if the SYNC pin is permanently high. In this mode, the QT1010 runs at
maximum speed at the expense of increased current consumption. Fast mode is useful when speed of
response is the prime design requirement. The delay between bursts (= touch scans) in Fast mode is
approximately 1 ms.
3.2.2 Low-Power Mode
The QT1010 runs in Low-Power (LP) mode if the SYNC pin is held low. In this mode, it sleeps for
approximately 80 ms at the end of each burst, saving power but slowing response. On detecting a
possible key touch, it temporarily switches to Fast mode until either the key touch is confirmed or found to
be spurious (via the detect integration process). It then returns to LP mode after the key touch is
resolved.
3.2.3 Sync Mode
It is possible to synchronize the device to an external clock source by placing an appropriate waveform
on the SYNC pin. SYNC mode can synchronize multiple QT1010 devices to each other to prevent cross-
interference, or it can be used to enhance noise immunity from low-frequency sources such as 50 Hz or
60 Hz mains signals. The SYNC pin is sampled at the end of each burst.
AT42QT1010
User Guide
© 2018 Microchip Technology Inc. User Guide DS40002062A-page 5

4. Documentation and Relevant Links
Software/IDE
• Microchip Touch Design Center:
http://www.microchip.com/design-centers/capacitive-touch-sensing
• Microchip MPLAB + MCC:
http://www.microchip.com/mplab/mplab-x-ide
http://www.microchip.com/MCC
• Atmel Studio + Start:
http://www.microchip.com/mplab/avr-support/atmel-studio-7
http://www.microchip.com/START
• Data Visualizer:
https://gallery.microchip.com/packages/AtmelDataVisualizerInstaller-Standalone/
Turnkey Touch Devkits
• Turnkey Evaluation Kits:
– CAP1188 Evaluation Kit
http://www.microchip.com/DevelopmentTools/ProductDetails/PartNo/dm160222
– CAP1298 Evaluation Kit
http://www.microchip.com/DevelopmentTools/ProductDetails/PartNo/dm16022
– MTCH108 Evaluation Board
http://www.microchip.com/DevelopmentTools/ProductDetails/PartNo/dm160229
Design Documentation:
Package containing CAD source, schematics, BOM, assembly drawings, 3D plots, layer plots, etc.
Hardware User's Guide:
PDF version of this user's guide.
AT42AT1010 Kit on Microchip Page:
Microchip website link.
AT42QT1010
Documentation and Relevant Links
© 2018 Microchip Technology Inc. User Guide DS40002062A-page 6

5. Hardware Revision History and Known Issues
5.1 Identifying Product ID and Revision
Kits have stickers that have the identifier and revision printed in plain text as A09-nnnn/rr, where 'nnnn' is
the identifier and 'rr' is the revision. Boards with limited space have a sticker with only a data matrix code,
which contains a serial number string.
The serial number string has the following format:
"nnnnrrssssssssss"
n = product identifier
r = revision
s = serial number
The product identifier for the AT42QT1010 Evaluation Kit is A09-3207.
5.2 Revision 4
Revision 4 of AT42QT1010 (A09-3207/04) is the initial released version. There are no known issues.
AT42QT1010
Hardware Revision History and Known Issues
© 2018 Microchip Technology Inc. User Guide DS40002062A-page 7

6. Document Revision History
Document Revision Date Comment
A 09/2018 Initial release of document
AT42QT1010
Document Revision History
© 2018 Microchip Technology Inc. User Guide DS40002062A-page 8

The Microchip Web Site
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a means to make files and information easily available to customers. Accessible by using your favorite
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“Customer Change Notification” and follow the registration instructions.
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• 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://www.microchip.com/support
Microchip Devices Code Protection Feature
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.
AT42QT1010
© 2018 Microchip Technology Inc. User Guide DS40002062A-page 9

• 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.
Legal Notice
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
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OR OTHERWISE, RELATED TO THE INFORMATION, INCLUDING BUT NOT LIMITED TO ITS
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Trademarks
The Microchip name and logo, the Microchip logo, AnyRate, AVR, AVR logo, AVR Freaks, BitCloud,
chipKIT, chipKIT logo, CryptoMemory, CryptoRF, dsPIC, FlashFlex, flexPWR, Heldo, JukeBlox, KeeLoq,
Kleer, LANCheck, LINK MD, maXStylus, maXTouch, MediaLB, megaAVR, MOST, MOST logo, MPLAB,
OptoLyzer, PIC, picoPower, PICSTART, PIC32 logo, Prochip Designer, QTouch, SAM-BA, SpyNIC, SST,
SST Logo, SuperFlash, tinyAVR, UNI/O, and XMEGA are registered trademarks of Microchip Technology
Incorporated in the U.S.A. and other countries.
ClockWorks, The Embedded Control Solutions Company, EtherSynch, Hyper Speed Control, HyperLight
Load, IntelliMOS, mTouch, Precision Edge, and Quiet-Wire are registered trademarks of Microchip
Technology Incorporated in the U.S.A.
Adjacent Key Suppression, AKS, Analog-for-the-Digital Age, Any Capacitor, AnyIn, AnyOut, BodyCom,
CodeGuard, CryptoAuthentication, CryptoAutomotive, CryptoCompanion, CryptoController, dsPICDEM,
dsPICDEM.net, Dynamic Average Matching, DAM, ECAN, EtherGREEN, In-Circuit Serial Programming,
ICSP, INICnet, Inter-Chip Connectivity, JitterBlocker, KleerNet, KleerNet logo, memBrain, Mindi, MiWi,
motorBench, MPASM, MPF, MPLAB Certified logo, MPLIB, MPLINK, MultiTRAK, NetDetach, Omniscient
Code Generation, PICDEM, PICDEM.net, PICkit, PICtail, PowerSmart, PureSilicon, QMatrix, REAL ICE,
Ripple Blocker, SAM-ICE, Serial Quad I/O, SMART-I.S., SQI, SuperSwitcher, SuperSwitcher II, Total
Endurance, TSHARC, USBCheck, VariSense, ViewSpan, WiperLock, Wireless DNA, 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.
Silicon Storage Technology is a registered trademark of Microchip Technology Inc. in other countries.
GestIC is a registered trademark of Microchip Technology Germany II GmbH & Co. KG, a subsidiary of
Microchip Technology Inc., in other countries.
All other trademarks mentioned herein are property of their respective companies.
AT42QT1010
© 2018 Microchip Technology Inc. User Guide DS40002062A-page 10

© 2018, Microchip Technology Incorporated, Printed in the U.S.A., All Rights Reserved.
ISBN: 978-1-5224-3545-7
Quality Management System Certified by DNV
ISO/TS 16949
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.
AT42QT1010
© 2018 Microchip Technology Inc. User Guide DS40002062A-page 11

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