MTCH108 Demonstration Board
User’s Guide
2015 Microchip Technology Inc.
DS40001823A
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Microchip is willing to work with the customer who is concerned about the integrity of their code.
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Code protection is constantly evolving. We at Microchip are committed to continuously improving the code protection features of our
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Information contained in this publication regarding device
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The Microchip name and logo, the Microchip logo, dsPIC,
FlashFlex, flexPWR, JukeBlox, KEELOQ, KEELOQ logo, Kleer,
LANCheck, MediaLB, MOST, MOST logo, MPLAB,
OptoLyzer, PIC, PICSTART, PIC32 logo, RightTouch, SpyNIC,
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registered trademarks of Microchip Technology Incorporated
in the U.S.A.
Analog-for-the-Digital Age, BodyCom, chipKIT, chipKIT logo,
CodeGuard, dsPICDEM, dsPICDEM.net, ECAN, In-Circuit
Serial Programming, ICSP, Inter-Chip Connectivity, KleerNet,
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Certified logo, MPLIB, MPLINK, MultiTRAK, NetDetach,
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© 2015, Microchip Technology Incorporated, Printed in the
U.S.A., All Rights Reserved.
ISBN: 978-1-5224-0093-6
QUALITY MANAGEMENT SYSTEM
CERTIFIED BY DNV
== ISO/TS 16949 ==
DS40001823A-page 2
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.
2015 Microchip Technology Inc.
MTCH108 DEMONSTRATION BOARD
USER’S GUIDE
Table of Contents
Preface ........................................................................................................................... 5
Chapter 1. MTCH108 Demonstration Board Overview
1.1 Introduction ................................................................................................... 11
1.1.1 Kit items ..................................................................................................... 11
1.2 Hardware Setup ........................................................................................... 11
1.2.1 On-Board Touch Buttons ........................................................................... 12
1.2.2 Power-up ................................................................................................... 12
1.2.3 Touch Sensitivity and Power Mode Adjustment ........................................ 12
1.2.4 LED Feedback ........................................................................................... 13
Chapter 2. Other Configurations
2.1 Introduction ................................................................................................... 15
2.1.1 Evaluate MTCH102/105/108 ..................................................................... 15
2.1.2 Guard Enable/Disable ............................................................................... 15
Appendix A. MTCH108 Controller Board Schematic
Appendix B. MTCH108 Controller Board Layout
Worldwide Sales and Service .................................................................................... 21
2015 Microchip Technology Inc.
DS40001823A-page 3
MTCH108 Demonstration Board User’s Guide
NOTES:
DS40001823A-page 4
2015 Microchip Technology Inc.
MTCH108 DEMONSTRATION BOARD
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 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
This chapter contains general information that will be useful to know before using the
MTCH108 Demonstration Board User’s Guide. Items discussed in this chapter include:
•
•
•
•
•
•
•
Document Layout
Conventions Used in this Guide
Recommended Reading
The Microchip Website
Development Systems Customer Change Notification Service
Customer Support
Revision History
DOCUMENT LAYOUT
This document describes how to use the MTCH108 Demonstration Board. The
document is organized as follows:
•
•
•
•
Chapter 1. “MTCH108 Demonstration Board Overview”
Chapter 2. “Other Configurations”
Appendix A. “MTCH108 Controller Board Schematic”
Appendix B. “MTCH108 Controller Board Layout”
2015 Microchip Technology Inc.
DS40001823A-page 5
MTCH108 Demonstration Board User’s Guide
CONVENTIONS USED IN THIS GUIDE
This manual uses the following documentation conventions:
DOCUMENTATION CONVENTIONS
Description
Arial font:
Italic characters
Initial caps
Quotes
Underlined, italic text with
right angle bracket
Bold characters
N‘Rnnnn
Text in angle brackets < >
Courier New font:
Plain Courier New
Represents
Referenced books
Emphasized text
A window
A dialog
A menu selection
A field name in a window or
dialog
A menu path
MPLAB® IDE User’s Guide
...is the only compiler...
the Output window
the Settings dialog
select Enable Programmer
“Save project before build”
A dialog button
A tab
A number in verilog format,
where N is the total number of
digits, R is the radix and n is a
digit.
A key on the keyboard
Click OK
Click the Power tab
4‘b0010, 2‘hF1
Italic Courier New
Sample source code
Filenames
File paths
Keywords
Command-line options
Bit values
Constants
A variable argument
Square brackets [ ]
Optional arguments
Curly brackets and pipe
character: { | }
Ellipses...
Choice of mutually exclusive
arguments; an OR selection
Replaces repeated text
Represents code supplied by
user
DS40001823A-page 6
Examples
File>Save
Press <Enter>, <F1>
#define START
autoexec.bat
c:\mcc18\h
_asm, _endasm, static
-Opa+, -Opa0, 1
0xFF, ‘A’
file.o, where file can be
any valid filename
mcc18 [options] file
[options]
errorlevel {0|1}
var_name [,
var_name...]
void main (void)
{ ...
}
2015 Microchip Technology Inc.
Preface
RECOMMENDED READING
This user’s guide describes how to use Microchip’s MTCH108 Demonstration Board.
Other useful documents are listed below. The following Microchip documents are
available and recommended as supplemental reference resources.
http://www.microchip.com
“MTCH102/5/8 2, 5 and 8-Channel Proximity/Touch Controller” Data Sheet
(DS40001793)
This data sheet provides detailed information regarding the MTCH108 Demonstration
Board.
2015 Microchip Technology Inc.
DS40001823A-page 7
MTCH108 Demonstration Board User’s Guide
THE MICROCHIP WEBSITE
Microchip provides online support via our website at www.microchip.com. This website
is used as a means to make files and information easily available to customers. Accessible by using your favorite Internet browser, the website 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
DEVELOPMENT SYSTEMS CUSTOMER CHANGE NOTIFICATION SERVICE
Microchip’s customer notification service helps keep customers current on Microchip
products. Subscribers will receive e-mail notification whenever there are changes,
updates, revisions or errata related to a specified product family or development tool of
interest.
To register, access the Microchip website at www.microchip.com, click on Customer
Change Notification and follow the registration instructions.
The Development Systems product group categories are:
• Compilers – The latest information on Microchip C compilers, assemblers, linkers
and other language tools. These include all MPLAB C compilers; all MPLAB
assemblers (including MPASM™ assembler); all MPLAB linkers (including
MPLINK™ object linker); and all MPLAB librarians (including MPLIB™ object
librarian).
• Emulators – The latest information on Microchip in-circuit emulators.This
includes the MPLAB REAL ICE™ and MPLAB ICE 2000 in-circuit emulators.
• In-Circuit Debuggers – The latest information on the Microchip in-circuit
debuggers. This includes MPLAB ICD 3 in-circuit debuggers and PICkit™ 3
debug express.
• MPLAB® IDE – The latest information on Microchip MPLAB IDE, the Windows®
Integrated Development Environment for development systems tools. This list is
focused on the MPLAB IDE, MPLAB IDE Project Manager, MPLAB Editor and
MPLAB SIM simulator, as well as general editing and debugging features.
• Programmers – The latest information on Microchip programmers. These include
production programmers such as MPLAB REAL ICE in-circuit emulator, MPLAB
ICD 3 in-circuit debugger and MPLAB PM3 device programmers. Also included
are nonproduction development programmers such as PICSTART® Plus and
PICkit 2 and 3.
DS40001823A-page 8
2015 Microchip Technology Inc.
Preface
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 website at:
http://www.microchip.com/support.
REVISION HISTORY
Revision A (12/2015)
Initial release of this document.
2015 Microchip Technology Inc.
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MTCH108 Demonstration Board User’s Guide
NOTES:
DS40001823A-page 10
2015 Microchip Technology Inc.
MTCH108 DEMONSTRATION BOARD
USER’S GUIDE
Chapter 1. MTCH108 Demonstration Board Overview
1.1
INTRODUCTION
The MTCH108 Demonstration Board is a very fast and convenient platform to evaluate
the MTCH102/105/108 capacitive touch button/proximity solution, and also works as
an example for sensor layout and integration with host. The board features up to eight
touch buttons with adjustable scan rate and sensitivity, providing touch feedback using
LEDs.
1.1.1
Kit items
• MTCH108 Controller Board with Touch Buttons
• Mini USB Cable
1.2
HARDWARE SETUP
The MTCH108 Demonstration Board uses an MTCH108 controller to detect
touch/proximity event on buttons. There is also a preprogrammed PIC10 controller
working as a host to control the scan rate of the MTCH108 controller.
FIGURE 1-1:
2015 Microchip Technology Inc.
MTCH108 DEMONSTRATION BOARD
DS40001823A-page 11
MTCH108 Demonstration Board User’s Guide
1.2.1
On-Board Touch Buttons
There are eight touch buttons implemented on this board, which are 8 mm in diameter.
All buttons are encircled by active guard by default.
1.2.2
Power-up
The MTCH108 Demonstration Board is powered through the mini USB connector on
the left edge of the board. The voltage (5V) from the USB port is then regulated down
to 3.3V by the MPC1700 LDO. The USB connector is not used for any kind of
communication.
1.2.3
Touch Sensitivity and Power Mode Adjustment
At the top left corner of the back side, there are two potentiometers that allow
alternation of the Sensitivity and Power mode of the buttons, as shown in Figure 1-2.
FIGURE 1-2:
SENSITIVITY AND POWER MODE BUTTONS
The R17 pin is connected to the MTSA pin of MTCH108 and it directly sets the voltage
of the MTSA pin. Dialing the knob to the right will lower the button sensitivity; dialing it
to the left will increase the sensitivity.
The R23 pin is used for Power mode adjustment and it is not directly connected to the
MTPM pin. The potentiometer affects the voltage on an analog pin of the PIC10
controller. The PIC10 has one pin connect to the MTPM pin of MTCH108, so based on
the voltage set by R23, PIC10 generates a waveform to control the MTPM pin.
• If dialing the knob to the most right position, the MTPM pin of MTCH108 receives
a steady high waveform, so the MTCH108 controller works at the Normal mode,
scanning as fast as it can.
• If dialing the knob to the most left position, the MTPM pin receives a steady low
waveform, setting the MTCH108 controller at the Low-Power mode, which scans
every 256 ms.
• If the position of the potentiometer is somewhere between the two ends, the
MTPM pin receives a pulse waveform, putting the MTCH108 controller into the
Smart-Scheduling mode. The pulse interval is preset by the PIC10 firmware,
including 32 ms, 64 ms, 96 ms, 128 ms, 160 ms, 192 ms and 224 ms.
For further information on the MTSA and the MTPM pin function, refer to the
“MTCH102/5/8 2, 5 and 8-Channel Proximity/Touch Controller Data sheet”
(DS40001793).
DS40001823A-page 12
2015 Microchip Technology Inc.
MTCH108 Demonstration Board Overview
1.2.4
LED Feedback
LEDs are used to provide visual feedback for touch configuration and information.
The LEDs to the right of the MTCH102, MTCH105 and MTCH108 labels indicates
which part is populated on this board; by default, MTCH108 is selected.
The LED to the right of the Guard label indicates if the Guard feature is enabled on this
board. If the Guard is enabled, this LED will be on when the PIC10 detects the Guard
waveform. At the same time, it also provides a visual indication of the scan rate.
The LED next to each touch button indicates the state of the touch button. When the
button is triggered, the LED will be lit up.
By default, the board has the Guard feature enabled, so the MTI2 pin outputs the Guard
signal instead of behaving as a touch sensor. Therefore, the LED next to the MTI2/G
button is not used.
2015 Microchip Technology Inc.
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MTCH108 Demonstration Board User’s Guide
NOTES:
DS40001823A-page 14
2015 Microchip Technology Inc.
MTCH108 DEMONSTRATION BOARD
USER’S GUIDE
Chapter 2. Other Configurations
2.1
INTRODUCTION
In addition to the default behavior, the MTCH108 board can be reconfigured to evaluate
different instances of usage.
2.1.1
Evaluate MTCH102/105/108
Because of the same pitch for the xSOP packages that MTCH102/105/108 uses, the
board has the footprint to adapt the packages for all three MTCH10X devices, as shown
in Figure 2-1.
FIGURE 2-1:
MTCH102/105/108 FOOTPRINT
The MTCH108 (SSOP) package can be replaced with the MTCH102 (MSOP) or the
MTCH105 (TSSOP) package and all the parts share the same pin 1 on the footprint.
The MTCH102 and MTCH105 devices should work immediately after replacement.
Also, it is recommended to populate the part indication LED to the corresponding
places (D10 for MTCH102, D11 for MTCH105 and D12 for MTCH108).
2.1.2
Guard Enable/Disable
As described in the previous chapter, the Guard feature is enabled by default, so the
sensor input for MTCH108 is limited to seven channels. The configuration can be
changed by adding and removing certain jump resistors (0Ω). All the resistors
mentioned below are 0Ω resistors, except for R10 (10 kΩ).
To evaluate the full eight buttons without Guard, remove R19, R21, and populate R22,
R11 to disable the Guard feature and enable the LED for the MTI2 button. This also
applies for the configuration of the MTCH105 device.
If MTCH102 is populated, the setting is different. For two buttons without Guard,
remove R1, populate R22, and ensure R18 is not populated. For one button with Guard
configuration, remove R10, R22 and populate R18 and R20.
2015 Microchip Technology Inc.
DS40001823A-page 15
MTCH108 Demonstration Board User’s Guide
NOTES:
DS40001823A-page 16
2015 Microchip Technology Inc.
10k
R2
10k
R3
10k
R4
Guard
CS3
0603
Guard
CS2
0603
Guard
CS1
0603
GND
0R
10k
R7
MTO7
MTO6
MTO5
MTO4
MTO3
R19 MTO2
R18 MTO1
DNP
MTO0
mTouch ® Sensor
1k
R10
0603
0603
0603
0603
0603
0603
1k
R16
1k
R15
1k
R14
1k
R13
1k
R12
1k
R11
DNP
0603
1k
LED1
D8
LED1
D7
LED1
D6
LED1
D5
LED1
D4
LED1
D3
LED1
D2
LED1
D1
VDD
mTouch® Sensor
1
2
CS7
10k
R8
Guard
CS7
0603
CS3
1
2
mTouch ® Sensor
1
2
mTouch ® Sensor
Guard
CS6
0603
CS6
CS2
1
2
mTouch® Sensor
1
2
mTouch ® Sensor
Guard Enable
0R
0603
10k
R6
Guard
CS5
0603
CS5
1
2
CS1
1
2
CS4
mTouch® Sensor
R9
10k
R5
Guard
CS4
0603
mTouch ® Sensor
1
2
CS0
J1
VBUS
DD+
GND
1
2
3
4
VDD
Guard
VDD
PAD2
0603
0603
0603
5
1k
R27
1k
R26
1k
DNP
LED1
D12
LED1
D11
LED1
D10
PIC10F320-I/OT
VDD
DNP
0.1uF
PAD4
Rubber Pad Cyl D7.9H5.3
Rubber Pad Cyl D7.9H5.3
PAD3
2
MTCH108
MTCH105
DNP
MTCH102
DNP
VSS
MCP1700/3.3V
RA0/ICSPDAT
RA1/ICSPCLK
RA2
RA3/MCLR/VPP
U3
Rubber Pad Cyl D7.9H5.3
Rubber Pad Cyl D7.9H5.3
PAD1
GND
1
VIN VOUT
GND
U2
1
3
4
6
C4
R25
GND
MTPM
100k
91A
20%
Chip Indication LED
GND
1uF
R23
GND
Power Mode Adjustment
3
C3
D9 Guard Indicator
LED1
1k
0603
R24
VDD
GND
USB MINI-AB Female
0
10k
2
R1
3
1
Guard
VDD
GND
2
VDD
0R
0R
0R
R22 DNP
R21
R20 DNP
VDD
GND
Guard
100kMTSA
91A
20%
R17
Sensitivity Adjustment
GND
CS2
CS1
3
2015 Microchip Technology Inc.
2
1
1
1
CS710
CS6 9
CS5 8
CS4 7
CS3 6
CS2 5
MTPM 4
CS1 3
CS0 2
VDD
CS4 7
CS3 6
CS2 5
MTPM 4
CS1 3
CS0 2
VDD
MTPM 4
CS1 3
CS0 2
VDD
GND
MTCH108
MTI7
MTI6
MTI5
MTI4
MTI3
MTI2/Guard
MTPM
MTI1
MTI0
VDD
U1
MTCH105
MTI4
MTI3
MTI2/Guard
MTPM
MTI1
MTI0
VDD
U1*
MTCH102
MTPM
MTI1/Guard
MTI0
VDD
U1**
VDD
VSS
MTO7
MTO6
MTO5
MTO4
MTO3
MTO2/GC
MTSA
MTO1
MTO0
VSS
MTO4
MTO3
MTO2/GC
MTSA
MTO1
MTO0
VSS
MTSA
MTO1/GC
11
12
13
14
15
16
17
18
19
20
8
9
10
11
12
13
14
5
6
7
8
C2
1uF
MTO0
0.1uF
C1
MTO7
MTO6
MTO5
MTO4
MTO3
MTO2
MTSA
MTO1
MTO0
MTO4
MTO3
MTO2
MTSA
MTO1
MTO0
MTSA
MTO1
MTO0
GND
GND
GND
FIGURE A-1:
1
CS0
0603
MTCH108 DEMONSTRATION BOARD
USER’S GUIDE
Appendix A. MTCH108 Controller Board Schematic
MTCH108 DEMONSTRATION BOARD SCHEMATIC
DS40001823A-page 17
MTCH108 Demonstration Board User’s Guide
NOTES:
DS40001823A-page 18
2015 Microchip Technology Inc.
MTCH108 DEMONSTRATION BOARD
USER’S GUIDE
Appendix B. MTCH108 Controller Board Layout
FIGURE B-1:
2015 Microchip Technology Inc.
MTCH108 CONTROLLER BOARD FRONT LAYOUT
DS40001823A-page 19
MTCH108 Demonstration Board User’s Guide
FIGURE B-2:
DS40001823A-page 20
MTCH108 CONTROLLER BOARD BACK SIDE LAYOUT
2015 Microchip Technology Inc.
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Fax: 82-53-744-4302
China - Hong Kong SAR
Tel: 852-2943-5100
Fax: 852-2401-3431
Korea - Seoul
Tel: 82-2-554-7200
Fax: 82-2-558-5932 or
82-2-558-5934
China - Nanjing
Tel: 86-25-8473-2460
Fax: 86-25-8473-2470
Malaysia - Kuala Lumpur
Tel: 60-3-6201-9857
Fax: 60-3-6201-9859
China - Qingdao
Tel: 86-532-8502-7355
Fax: 86-532-8502-7205
Malaysia - Penang
Tel: 60-4-227-8870
Fax: 60-4-227-4068
China - Shanghai
Tel: 86-21-5407-5533
Fax: 86-21-5407-5066
Philippines - Manila
Tel: 63-2-634-9065
Fax: 63-2-634-9069
China - Shenyang
Tel: 86-24-2334-2829
Fax: 86-24-2334-2393
Singapore
Tel: 65-6334-8870
Fax: 65-6334-8850
China - Shenzhen
Tel: 86-755-8864-2200
Fax: 86-755-8203-1760
Taiwan - Hsin Chu
Tel: 886-3-5778-366
Fax: 886-3-5770-955
China - Wuhan
Tel: 86-27-5980-5300
Fax: 86-27-5980-5118
Taiwan - Kaohsiung
Tel: 886-7-213-7828
China - Xian
Tel: 86-29-8833-7252
Fax: 86-29-8833-7256
Germany - Karlsruhe
Tel: 49-721-625370
Germany - Munich
Tel: 49-89-627-144-0
Fax: 49-89-627-144-44
Italy - Milan
Tel: 39-0331-742611
Fax: 39-0331-466781
Italy - Venice
Tel: 39-049-7625286
Netherlands - Drunen
Tel: 31-416-690399
Fax: 31-416-690340
Poland - Warsaw
Tel: 48-22-3325737
Spain - Madrid
Tel: 34-91-708-08-90
Fax: 34-91-708-08-91
Sweden - Stockholm
Tel: 46-8-5090-4654
UK - Wokingham
Tel: 44-118-921-5800
Fax: 44-118-921-5820
Taiwan - Taipei
Tel: 886-2-2508-8600
Fax: 886-2-2508-0102
Thailand - Bangkok
Tel: 66-2-694-1351
Fax: 66-2-694-1350
07/14/15
2015 Microchip Technology Inc.
DS40001823A-page 21