MCP42XX
PICtail™ Plus
Daughter Board
User’s Guide
© 2008 Microchip Technology Inc.
DS51759A
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.
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and may be superseded by updates.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, Accuron,
dsPIC, KEELOQ, KEELOQ logo, MPLAB, PIC, PICmicro,
PICSTART, rfPIC and SmartShunt are registered trademarks
of Microchip Technology Incorporated in the U.S.A. and other
countries.
FilterLab, Linear Active Thermistor, MXDEV, MXLAB,
SEEVAL, SmartSensor 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, CodeGuard,
dsPICDEM, dsPICDEM.net, dsPICworks, dsSPEAK, ECAN,
ECONOMONITOR, FanSense, In-Circuit Serial
Programming, ICSP, ICEPIC, Mindi, MiWi, MPASM, MPLAB
Certified logo, MPLIB, MPLINK, mTouch, PICkit, PICDEM,
PICDEM.net, PICtail, PIC32 logo, PowerCal, PowerInfo,
PowerMate, PowerTool, REAL ICE, rfLAB, Select Mode, Total
Endurance, UNI/O, 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.
© 2008, Microchip Technology Incorporated, Printed in the
U.S.A., All Rights Reserved.
Printed on recycled paper.
Microchip received ISO/TS-16949:2002 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.
DS51759A-page ii
© 2008 Microchip Technology Inc.
MCP42XX PICTAIL™ PLUS
DAUGHTER BOARD USER’S GUIDE
Table of Contents
Preface ........................................................................................................................... 1
Introduction............................................................................................................ 1
Document Layout .................................................................................................. 1
Conventions Used in this Guide ............................................................................ 2
Recommended Reading........................................................................................ 3
The Microchip Web Site ........................................................................................ 3
Customer Support ................................................................................................. 3
Document Revision History ................................................................................... 3
Chapter 1. Product Overview
1.1 Introduction ..................................................................................................... 5
1.2 What is the MCP42XX PICtail Plus Daughter Board? .................................... 6
1.3 What the MCP42XX PICtail Plus Daughter Board Kit includes ...................... 7
Chapter 2. Installation and Operation
2.1 Introduction ..................................................................................................... 9
2.2 Features ......................................................................................................... 9
2.3 Getting Started ............................................................................................. 10
2.4 Explorer 16 Daughter Demo Board Demos .................................................. 14
Appendix A. Schematic and Layouts
A.1 Introduction .................................................................................................. 29
A.2 Schematics and PCB Layout ....................................................................... 29
A.3 Board - Schematic ....................................................................................... 30
A.4 Board – Top Silk-screen Layer .................................................................... 31
A.5 Board – Top Components + Silk-Screen ..................................................... 32
A.6 Board – Ground Layer ................................................................................. 33
A.7 Board – Power Layer ................................................................................... 34
A.8 Board – Bottom Layer .................................................................................. 35
Appendix B. Bill Of Materials (BOM)
Appendix C. Board Testing
C.1 Introduction .................................................................................................. 39
C.2 What is Tested ............................................................................................. 40
C.3 What is NOT Tested .................................................................................... 40
Worldwide Sales and Service .................................................................................... 42
© 2008 Microchip Technology Inc.
DS51759A-page iii
MCP42XX PICtail™ Plus Daughter Board User’s Guide
NOTES:
DS51759A-page iv
© 2008 Microchip Technology Inc.
MCP42XX PICTAIL™ PLUS
DAUGHTER 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 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 on-line help files.
INTRODUCTION
This chapter contains general information that will be useful to know before using the
MCP42XX PICtail Plus Daughter Board User’s Guide. Items discussed in this chapter
include:
•
•
•
•
•
•
Document Layout
Conventions Used in this Guide
Recommended Reading
The Microchip Web Site
Customer Support
Document Revision History
DOCUMENT LAYOUT
This document describes how to use the MCP42XX PICtail Plus Daughter Board
User’s Guide as a development tool to emulate and debug firmware on a target board.
The manual layout is as follows:
• Chapter 1. “Product Overview” – Important information about the MCP42XX
PICtail Plus Daughter Board User’s Guide.
• Chapter 2. “Installation and Operation” – Includes instructions on how to get
started with this user’s guide and a description of the user’s guide.
• Appendix A. “Schematic and Layouts” – Shows the schematic and layout
diagrams for the MCP42XX PICtail Plus Daughter Board User’s Guide.
• Appendix B. “Bill Of Materials (BOM)” – Lists the parts used to build the
MCP42XX PICtail Plus Daughter Board User’s Guide.
• Appendix C. “Board Testing” – Describes the testing method for the MCP42XX
PICtail Plus Daughter Board User’s Guide and what aspects of the board are and
are not tested.
© 2008 Microchip Technology Inc.
DS51759A-page 1
MCP42XX PICtail™ Plus Daughter Board User’s Guide
CONVENTIONS USED IN THIS GUIDE
This manual uses the following documentation conventions:
DOCUMENTATION CONVENTIONS
Description
Arial font:
Italic characters
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
#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}
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 code supplied by
user
DS51759A-page 2
Examples
File>Save
Press <Enter>, <F1>
var_name [,
var_name...]
void main (void)
{ ...
}
© 2008 Microchip Technology Inc.
Preface
RECOMMENDED READING
This user's guide describes how to use MCP42XX PICtail Plus Daughter Board User’s
Guide. Other useful documents are listed below. The following Microchip documents
are available and recommended as supplemental reference resources.
AN1080 Application Note, “Understanding Digital Potentiometer Resistor Variations”, DS01080
These data sheets provides detailed information regarding the MCP41XX/42XX
product family:
MCP413x/415x/423x/425x Data Sheet, “7/8-Bit Single/Dual SPI Digital POT with
Non-Volatile Memory“, DS22059
MCP414x/416x/424x/426x Data Sheet, “7/8-Bit Single/Dual SPI Digital POT with
Volatile Memory“, DS22060
THE MICROCHIP WEB SITE
Microchip provides online support via 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
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 (September 2008)
• Initial Release of this Document.
© 2008 Microchip Technology Inc.
DS51759A-page 3
MCP42XX PICtail™ Plus Daughter Board User’s Guide
NOTES:
DS51759A-page 4
© 2008 Microchip Technology Inc.
MCP42XX PICTAIL™ PLUS
DAUGHTER BOARD USER’S GUIDE
Chapter 1. Product Overview
1.1
INTRODUCTION
The MCP42XX PICtail Plus Daughter Board demonstrates the features and abilities of
Microchip’s MCP41XX and MCP42XX Digital Potentiometers. This board is designed
to exclusively use the MCP42XX devices.
The MCP41XX and MCP42XX are Digital Potentiometers with an SPI interface. These
devices have either 7-bits or 8-bits of resolution, single or dual offering, and are
available as either volatile or non-volatile memory options.
This board is designed to easily operate with any of the following:
• PIC24 Explorer 16 Demo Board (DM240001)
• PICkit™ Serial Analyzer (DV164122)
• Other PICDEM Demo Board that includes a PICtail Plus female connector
The use of the PIC24 Explorer 16 Demo Board (DM240001) will require a tool to
program the supplied firmware into the PIC24FJ128GA010 device. The use of any
other PICDEM Demo Board will require the user to modify the supplied “C” source
program appropriately.
The use of the PICkit Serial Analyzer will require the PC GUI interface program to
control the command and data sent to the MCP42XX devices serial port. The PICkit
Serial Analyzer GUI may be used, or the provided dedicated GUI may be used. The
source code for this dedicated GUI is available, but not supported (as is).
This chapter covers the following topics:
• What is the MCP42XX PICtail Plus Daughter Board?
• What the MCP42XX PICtail Plus Daughter Board Kit includes
© 2008 Microchip Technology Inc.
DS51759A-page 5
MCP42XX PICtail™ Plus Daughter Board User’s Guide
1.2
WHAT IS THE MCP42XX PICTAIL PLUS DAUGHTER BOARD?
The MCP42XX PICtail Plus Daughter Board is used to demonstrate the use of Digital
Potentiometers. This board is designed to be used in conjunction with either the PIC24
Explorer 16 Demo Board or the PICkit™ Serial Analyzer. Figure 1-1 shows the boards
component placement and the purpose of the jumpers.
The board has an MCP4261-103 (10 kΩ) device for evaluation. This device is in the
TSSOP package (U2). This is a dual 8-bit Non-Volatile Potentiometer device. The
MCP4261 uses an SPI interface and can be controlled via the PICkit Serial Analyzer
interface (J1) or via the PICtail Plus interface (J3).
When using the PICtail Plus interface, the CS voltages can be taken to a VIHH level for
high voltage commands. This is done by controlling the selection of the analog switch
device (U1).
Jumpers allow the Terminal A and Terminal B voltages to be tied to AVDD and VSS, or
come from and external source.
Selects source
of Terminal A0
Voltage. Either
AVDD or VA0
Not Installed
Selects source
of Terminal B0
Voltage. Either
AVSS or VB0
Selects source
of Terminal A1
Voltage. Either
AVDD or VA1
PICkit Serial
Analyzer
Interface (SPI)
Connects
Wipers
(W0 and W1)
to PIC24 Analog
Inputs
FIGURE 1-1:
DS51759A-page 6
Selects source
of Terminal B1
Voltage. Either
AVSS or VB1
Connects
Explorer 16
+5V signal to
AVDD signal
MCP42XX Explorer 16 Daughter Board Demo Board Connectors.
© 2008 Microchip Technology Inc.
Product Overview
Some of the features of the board include:
• PICkit Serial Analyzer Interface (J1)
• PICtail Plus Interface (J3)
• MAX4582L High Voltage analog switch to allow CS voltage to be selected as one
of four voltages (VSS, 3.3V, 5.0V, or 9.0V) - High Voltage command support
• Jumpers (JP2:JP3) to connect Wiper pins (W0 and W1) to PICDEM Analog
Channels
• Jumper (JP1) to allow AVDD to be driven by external power supply while
connected to PICDEM board or PICkit Serial Analyzer
• Jumpers to allow Terminal A pins to be connected to AVDD or VAx pad
• Jumpers to allow Terminal B pins to be connected to VSS or VBx pad
• Connection point for easy connection to Resistor Network Terminal pins
1.3
WHAT THE MCP42XX PICTAIL PLUS DAUGHTER BOARD KIT INCLUDES
This MCP42XX PICtail Plus Daughter Board Kit includes:
• One MCP42XX PICtail Plus Daughter Board, 102-00182
• Analog and Interface Products Demonstration Boards CD-ROM (DS21912)
- MCP42XX PICtail™ Plus Daughter Board User’s Guide, (DS51759)
- PICkit Serial Analyzer PC GUI (executable and source code) - supplied “As
Is”
© 2008 Microchip Technology Inc.
DS51759A-page 7
MCP42XX PICtail™ Plus Daughter Board User’s Guide
NOTES:
DS51759A-page 8
© 2008 Microchip Technology Inc.
MCP42XX PICTAIL™ PLUS
DAUGHTER BOARD USER’S GUIDE
Chapter 2. Installation and Operation
2.1
INTRODUCTION
The MCP42XX PICtail Plus Daughter Board is used to demonstrate the operation of
Digital Potentiometer. The operation of the MCP41XX devices is similar to the
MCP42XX devices. Therefore, this demo board can be used as a development platform for either device family.
This board is designed to be used in conjunction with either the PIC24 Explorer 16
Demo Board or the PICkit™ Serial Analyzer.
2.2
FEATURES
This board supports the following features
• Each digital potentiometers Terminal A pin can be individually connected to either
AVDD or the corresponding VAx pad
• Each digital potentiometers Terminal B pin can be individually connected to either
AVSS or the corresponding VBx pad
• Can control the voltage on the MCP4261’s CS pin to either VSS, 3.3V, 5.0V, or
9.0V via control signals from the PICtail Plus interface (J3)
• Can Control the MCP4261 via the PICkit™ Serial Analyzer interface (J1)
• PIC24 can monitor the voltage levels of the MCP4261’s W0 and W1 pins
• Supplied with a “C” program that demonstrates normal and high voltage
commands
• Demonstrates a split rail application, with digital logic at 3.3V and analog
operation at 5.0V
© 2008 Microchip Technology Inc.
DS51759A-page 9
MCP42XX PICtail™ Plus Daughter Board User’s Guide
2.3
GETTING STARTED
Figure 2-1 shows a simplified circuit for the MCP42XX PICtail Plus Daughter Board.
The layout of the board is shown in Figure 2-3. This board can be operated with either
a PICDEM board with a PICtail Plus header or the PICkit Serial Analyzer. The
MCP42XX PICtail Plus Daughter Board kit comes with firmware for the Explorer 16
Starter Kit (DV164033). The layout of this board is shown in Figure 2-5.
The MCP42XX PICtail Plus Daughter Board supports the following Microchip Digital
Potentiometer devices; which allows demonstration of all MCP42XX devices
• MCP42X1
J1
AVDD VSS
AVDD
R1
PICVDD
(+5.0V)
VSS
AVDD
C1
MCP4261
(TSSOP)
VSS
JP1
RAB0
C2
VA0
R2
R4
R3
R6
R5
VW0
R7
JP2
CS0
RB2 (CS0)
VSS
SDI
SDI
SDO
SDO
AVDD
SCK
SCK
WP
RF0 (WP)
JP3
RAB1
SHDN
RF1 (SHDN)
SDA2
VW1
JP4
SCL2
J2
VW0
RB0/AN0
VW1
RB1/AN1
PIC
Explorer 16
Interface
CS
VDD
VSS
SDI2
SCK2
SDO2
J3
DS51759A-page 10
SCK1
SDI1
SDO1
RB3/AN3
VSS
(To SDO)
(To SCK)
(To SDI)
Connector
Orientation
Notch
H2 (PICkit Serial Interface)
FIGURE 2-1:
1
RB2
VSS
AN0
H1 (PICkit Serial Interface)
NC
VDD
VSS
SDA
SCL
NC
VB0
VA1
RE9
VSS
2
RF2
RF3
SCL1
RB2
SDA1
CS0
RD14
RD15
VSS
AN1
RB4/AN4
VSS
RE8
RD14
+3.3V
+5.0V
+9.0V
RD15
+3.3V
+5.0V
+9.0V
RG0
RG1
RG9
SCK2
SDI2
RF0
RF1
RF4
RF5
SCL2
SDO2
SDA2
VSS
Pin #
1
2
3
4
5
6
7
8
9
10
11
12
13
14
VSS
SPI Name
CS
SCK
SDI
VSS
P1B
P1W
P1A
P0A
P0W
P0B
WP
SHDN
SDO
VDD
VSS
VSS
VB1
MAX4582L
VDD
Y
+9.0V
A
B
Y0 +5.0V
Y1 +3.3V
C
Y2 VSS
Y3 +9.0V
EN
I2C Name
HVC/A0
SCL
SDA
VSS
PICkit Serial 6-Pin Interface
P1B
Pin # SPI Name I2C Name
P1W
6
SDO
—
P1A
5
SCK
SCL
P0A
4
SDI
SDA
P0W
3
VSS
VSS
P0B
2
VDD
VDD
WP
1
CS
—
A2
A1
VDD
MCP41XX Simplified Circuit.
© 2008 Microchip Technology Inc.
Installation and Operation
2.3.1
The Hardware
Figure 2-2 shows the component placement of the MCP42XX PICtail Plus Daughter
Board as well as the operation of the board jumpers.
The VAx and VBx pads allow an external voltage source to be applied to the device’s
desired Terminal A or Terminal B pin. The VWx pad is directly connected to the corresponding Terminal W pin, which makes it easy to measure the resulting voltage. The
AVDD pad allows an external power supply to power the board, which should improve
performance compared to powering the board via the PICtail Plus header or the PICkit
Serial Analyzer.
The Printed Circuit Board (PCB) has been designed for the support of the SPI and I2C
device families (MCP42XX and MCP46XX), so not all components are installed for the
SPI version of the demo board.
2.3.1.1
JUMPER DESCRIPTIONS
Figure 2-2 shows the function of the demo board jumpers. Some of the jumpers configure the voltage source of the Terminal A and Terminal B pins while others determine
the connection of the W pins. Lastly there is a jumper to ensure that drive conflicts do
not occur if an external power supply is being used for the AVDD voltage.
The default jumper configuration for the shipped demo board is shown in Figure 2-3.
© 2008 Microchip Technology Inc.
DS51759A-page 11
MCP42XX PICtail™ Plus Daughter Board User’s Guide
JMP1:JMP3 Terminal A Source
VAx Pad
JMP2:JMP4 Terminal B Source
AVDD
VBx Pad
VSS
JP3 - PIC24 AN1 pin
AN1 connected to W1
AN1 not connected
JP2 - PIC24 AN0 pin
FIGURE 2-2:
DS51759A-page 12
JP1 - Explorer 16 5V signal to AVDD plane
AN0 connected to W0
Explorer 16 5V signal connected to
MCP42XXDM-PTPLS AVDD plane
AN0 not connected
Explorer 16 5V signal not connected to
MCP42XXDM-PTPLS AVDD plane
MCP42XXDM-PTPLS Jumper Configuration and Oscilloscope Test Points.
© 2008 Microchip Technology Inc.
Installation and Operation
FIGURE 2-3:
MCP42XX PICtail Plus Daughter Board Layout with Default Jumper Settings
Note:
© 2008 Microchip Technology Inc.
This is the Jumper configuration that the board should be shipped with.
DS51759A-page 13
MCP42XX PICtail™ Plus Daughter Board User’s Guide
2.4
EXPLORER 16 DAUGHTER DEMO BOARD DEMOS
This section describes how to demonstrate the MCP42XX PICtail Plus Daughter
Board. The demos will either use an Explorer 16 Developers Board or a PICkit Serial
Analyzer.
The demo using the Explorer 16 Developers Board is discussed in
Section 2.4.1 “Demos with the Explorer 16 Starter Kit”. While the demo using the
PICkit Serial Analyzer is discussed in Section 2.4.2 “Demo with the PICkit Serial
Analyzer”.
Note:
2.4.1
Both demos require that the MCP42XXDM-PTPLS board jumper settings
are as shown in Figure 2-4.
Demos with the Explorer 16 Starter Kit
Note:
For information on how to use the MPLAB-IDE, ICD-2, or any other aspect
of the PIC Development tool platform, please refer to the appropriate
documentation.
This Demo will use the Explorer 16 Starter Kit. This board needs to be programmed
with the supplied firmware. This firmware can be found on the included CD-ROM or can
be downloaded from the Microchip web site. It is good practice to check the Microchip
web site for updates to the demo firmware.
The supplied firmware program has two modes of operation. In the first mode, the
program generates a saw wave on the VW1 pin (see Figure 2-6). The second mode is
to display the operation of High Voltage commands to Wiper 1 (see Figure 2-7). This is
where the CS signal is driven to 9V.
The program selected is determined after a reset (including the Power-on reset) by the
state of the S3 switch. The programs are:
• Wiper 1 Saw Wave (Switch S3 not depressed)
• Increment / Decrement with High Voltage Write to Non-Volatile Wiper 1 Register
(Switch S3 depressed)
Table 2-1 shows the required hardware to operate the demo.
TABLE 2-1:
Item # Description
Comment
1
Explorer 16 Developers Board and power supply
(DV164033)
Note 1
2
MCP42XXDM-PTPLS
3
4 Channel oscilloscope
Note 1:
2:
DS51759A-page 14
DEMO HARDWARE REQUIREMENTS
Note 2
A development tool to program the Explorer 16 Developers Board is required. This
development tool could be Microchip’s MPLAB ICD-2.
An oscilloscope with fewer channels can be used, but this will require that the
probes be moved between signals to verify the output states. A 2 channel is the
minimum requirement, but is not recommended.
© 2008 Microchip Technology Inc.
Installation and Operation
2.4.1.1
THE MCP42XXDM-PTPS JUMPER CONFIGURATION
Before inserting the board into the Explorer 16 Developers Board, the jumper
configuration must be verified. Figure 2-4 shows the configurations of the jumpers.
Channel 1
Channel 4
(Program 2 SDO Signal)
Channel 4
Channel 3
Channel 2
FIGURE 2-4:
MCP4XXDM-PTPLS Jumper Configuration and Oscilloscope Test Points.
Note:
© 2008 Microchip Technology Inc.
This is the Jumper configuration that the board should be shipped with.
DS51759A-page 15
MCP42XX PICtail™ Plus Daughter Board User’s Guide
2.4.1.2
MCP42XX PICTAIL PLUS DAUGHTER BOARD (MCP42XXDM-PTPLS)
INTO THE EXPLORER 16 STARTER KIT (DV164033)
Figure 2-5 shows the component placement on the Explorer 16 Demo Board including
the PICtail Plus header that the MCP42XX PICtail Plus Daughter Board is inserted into.
The boards Reset switch and other switches are pointed out.
Ensure that the MCP42XXDM-PTPLS is installed in the correct orientation into the
Explorer 16 Developers Board. Figure 2-5 shows the location where the daughter
board is inserted into the Explorer 16 Developers Board.
Explorer 16
Development
Board reset
switch
Connector
(female) for
MCP42XXDMPTPLS board
M
S3 (RD6)
Switch State
selects program
at POR or after
MCLR reset
FIGURE 2-5:
DS51759A-page 16
S6 (RD7)
Increment Volatile Wiper1
S4 (RD13)
Decrement Volatile Wiper1
S5 (RA7)
Read Volatile Wiper1, then
Write Non-Volatile Wiper1
Explorer 16 Development Board (DV164033).
© 2008 Microchip Technology Inc.
Installation and Operation
2.4.1.3
DEMO STEPS
The PIC24 Board firmware contains two programs. The program selected is determined after a reset (including the Power-on reset) by the state of the S3 switch. The
programs are:
1. Wiper 1 Saw Wave (Switch S3 not depressed).
2. Increment / Decrement with High Voltage Write to Non-Volatile Wiper 1 Register
(Switch S3 depressed).
Table 2-2 shows the sequence of steps to demo the MCP42XXDM-PTPLS board with
the Explorer 16 Developer’s Board.
Figure 2-6 shows the expected output waveform for Program #1 (Wiper 1 Saw Wave)
as well as the voltage levels and ranges of the four signals. Figure 2-7 shows an example waveforms for the High Voltage Write Command for the SDI, SDO, SCK, and CS
signals.
TABLE 2-2:
Step
DEMO STEPS USING THE PICDEM HPC EXPLORER DEMO
BOARD
Action
Result
1a
Turn on oscilloscope and configure as follows:
• Channel 1, 2, 3, and 4 @ 5V/Division
• Channel 1 to 4 have same ground
reference point
—
1b
Configure oscilloscope as follows:
• Time-base = 100 ms/Division
(see Figure 2-6 for scope details)
—
2
Configure the MCP42XXDM-PTPLS to the
jumper settings shown in Figure 2-4.
—
3
Insert the MCP42XXDM-PTPLS board into the
Explorer 16 Developers Board J5 header (see
Figure 2-5). Ensure proper orientation of
Daughter Board to J5 Header.
—
4
Connect the oscilloscope probes as follows:
• Channel 1 to the CS Pin of Header J1
• Channel 2 to the SDI Pin of Header J1
• Channel 3 to the SCK Pin of Header J1
• Channel 4 to the VW1 Pad
—
5
Power up the programmed Explorer 16 Devel- Program 1 is now selected.
oper Board and depress and release the MCLR Output waveform should look similar
push button
to Figure 2-6. Ensure to verify voltage levels/ranges of the four signals.
(Note 1)
6
Depress the Explorer 16 Developer Board’s S3 —
push button
7
Depress and release the Explorer 16 Developer —
Board’s MCLR push button
8
Release the Explorer 16 Developer Board’s S3 Program 2 is now selected.
push button
9
Configure oscilloscope as follows:
• Time-base = 50 µs/Division
(see Figure 2-7 for scope details)
Note 1:
© 2008 Microchip Technology Inc.
—
The SDI and SCK signals go from VSS to approximately 3.3V due to the PIC24
operating at 3.3V. The VW1 signals go from VSS to approximately 5V.
DS51759A-page 17
MCP42XX PICtail™ Plus Daughter Board User’s Guide
TABLE 2-2:
Step
Action
Result
10
Depress the Explorer 16 Developer Board’s S6 While S6 is depressed, the voltage
push button
on Wiper 1 (VW1) increases
11
Depress the Explorer 16 Developer Board’s S4 While S4 is depressed, the voltage
push button
on Wiper 1 (VW1) decreases
12
Use the S4 and S6 push buttons to configure
—
the volatile wiper 1 register to either near VDD
or near VSS. Take note of Wiper Voltage value.
13
Move Channel 4 scope probe (VW1) to SDO
signal on J1 (see Figure 2-4)
—
14
Configure Scope to Capture on Channel 1 (CS
pin) on the rising edge at about 7V.
—
15
Depress the Explorer 16 Developer Board’s S5 While S5 is depressed, the volatile
push button
Wiper 1 register is read, this value is
written to the Non-Volatile Wiper 1
register, and then approximately a
10ms delay occurs while the NV write
cycle occurs. Capture will look similar
to Figure 2-7 (Note 1)
16
Unplug Power from the Explorer 16 Developer
Board
17
Depress the Explorer 16 Developer Board’s S3 —
push button
18
Power up the programmed Explorer 16 Devel- —
oper Board and depress and release the MCLR
push button
19
Release the Explorer 16 Developer Board’s S3 The voltage on the Wiper 1 pad
push button
(VW1) should be the same voltage
level as when completed with Step
12.
20
Unplug Power from the Explorer 16 Developer
Board and remove the MCP42XXDM-PTPLS
board
Note 1:
DS51759A-page 18
DEMO STEPS USING THE PICDEM HPC EXPLORER DEMO
BOARD (CONTINUED)
—
—
The SDI and SCK signals go from VSS to approximately 3.3V due to the PIC24
operating at 3.3V. The VW1 signals go from VSS to approximately 5V.
© 2008 Microchip Technology Inc.
Installation and Operation
FIGURE 2-6:
Screen Capture of Program 1 Output Waveforms.
FIGURE 2-7:
Screen Capture of Program 2 Non-Volatile Write Waveform.
© 2008 Microchip Technology Inc.
DS51759A-page 19
MCP42XX PICtail™ Plus Daughter Board User’s Guide
2.4.2
Demo with the PICkit Serial Analyzer
Note:
For information on how to use the PICkit Serial Analyzer, or any other
aspect of the PIC® Development tool platform, please refer to the
appropriate documentation.
This demo requires that you have previously installed the PICkit Serial Analyzer
(DV164122) on your computer. Ensure that the device has properly been installed
before using the Supplied GUI for the MCP41XX/42XX devices.
Note 1:
The GUI is supplied “As Is”, and the source code is supplied to allow
developers a starting point for any GUI development.
The GUI will be updated to include the selection of I2C devices
(MCP45XX/46XX).
2:
The GUI requires two files, these are:
• DigipotControl.exe
• PICkitS.dll
The “PICkitS.dll” file must be in the same directory as the application executable file.
Table 2-3 shows the required hardware to operate the demo.
TABLE 2-3:
DEMO HARDWARE REQUIREMENTS
Item # Description
1
PC with USB port running Windows XP
2
PICkit Serial Analyzer Adapter (DV164122)
3
MCP42XXDM-PTPLS
4
Oscilloscope
Note 1:
DS51759A-page 20
Comment
Note 1
A Digital Multi-Meter (DMM) may be used to measure the W pins voltage.
© 2008 Microchip Technology Inc.
Installation and Operation
2.4.2.1
THE GUI SCREENS AND GUI CONFIGURATION
Figure 2-8 shows the GUI when the application is first started.
FIGURE 2-8:
1st Screen of GUI.
Figure 2-9 shows the GUI box where the SPI Baud Rate is specified. Clicking on the
“Set Baud” button results in an actual Baud Rate of 9.62 kHz, as shown in Figure 2-10.
This reflects the actual Baud Rate based on the PICkit Serial Analyzer’s clock frequency.
FIGURE 2-9:
© 2008 Microchip Technology Inc.
Configuring the Baud Rate - Desired Baud Rate.
DS51759A-page 21
MCP42XX PICtail™ Plus Daughter Board User’s Guide
FIGURE 2-10:
Configuring the Baud Rate - Actual Baud Rate.
To display the data values in hexidecimal, click on the Hex radial button. To Chip Select
the MCP42XX device, click on the “Disable CS” button. The GUI window will now look
like Figure 2-11. To have access to more control of the MCP42XX memory, click on the
Advanced tab, and the GUI will display Figure 2-12.
FIGURE 2-11:
DS51759A-page 22
Enabling The MCP42XX Chip Select.
© 2008 Microchip Technology Inc.
Installation and Operation
FIGURE 2-12:
Advance Screen.
Clicking on the Read Button should display the register values shown in Figure 2-13.
The volatile wiper value should match the Non-volatile wiper value.
Note:
The Volatile/Non-Volatile wiper values may not be the device’s expected
Mid-scale value due to board production testing.
To write to a desired register, in the desired data entry box and click on the Write button.
Figure 2-14 shows an example of writing to the Volatile Wiper 0 register.
FIGURE 2-13:
© 2008 Microchip Technology Inc.
Advance Screen - Read Register.
DS51759A-page 23
MCP42XX PICtail™ Plus Daughter Board User’s Guide
FIGURE 2-14:
DS51759A-page 24
Advance Screen - Write Register.
© 2008 Microchip Technology Inc.
Installation and Operation
Figure 2-15 shows the connections for the Demo using the PICkit Serial Analyzer.
Insert PICkit Serial
Analyzer into
this Header
Channel 1
FIGURE 2-15:
PICkit Serial Analyzer Demo Jumper Configuration and Oscilloscope Test Points.
© 2008 Microchip Technology Inc.
DS51759A-page 25
MCP42XX PICtail™ Plus Daughter Board User’s Guide
2.4.2.2
DEMO STEPS
The use of the PICkit Serial Analyzer means that wiper pin’s voltage is under direct
control from the PC’s GUI interface and more user experimentation is possible.
TABLE 2-4:
Step
DEMO STEPS USING THE PICDEM HPC EXPLORER DEMO
BOARD
Action
Result
1a
Turn on oscilloscope and configure as follows:
• Channel 1 @ 1V/Division (Note 1)
—
1b
Configure oscilloscope as follows:
• Time-base = 100 µs/Division (Note 1)
—
2
Configure the MCP42XXDM-PTPLS to the
jumper settings shown in Figure 2-15.
—
3
Insert the PICkit Serial Analyzer into the
MCP42XXDM-PTPLS board’s J1 header.
Ensure proper orientation of the PICkit Serial
Analyzer to the J1 Header.
—
4
Connect the oscilloscope probes as follows:
• Channel 1 to the VW1 Pad
—
5
Plug the PICkit Serial into the PC’s USB port
—
6
Plug the PICkit Serial into the
MCP42XXDM-PTPLS board’s J1 connector
The MCP42XXDM-PTPLS board is
now powered
7
Start the GUI application
See Figure 2-8 and
8
Select a Baud rate of 9600
See Figure 2-9 and Figure 2-10
9
Under Additional Features, select the “Hex”
See Figure 2-11. The button’s text
radial button and then Click on the “Enable CS” changes to “Disable CS”
button. This drives the CS signal low. This
Enables the MCP42XX to receive serial commands.
10
Click on the “Advanced” tab
The Advanced screen appears, see
11
Click on all 6 “Read” buttons
See Figure 2-13
12
In the Volatile Wiper 1 register text box, type a See Figure 2-14
value that is significantly different then the current value. Such as, if the value was 1FFh, type
20h.
13
Click on the associated “Write” button
The VW1 voltage (on the oscilloscope) changes.
14
Type other values and then click on the “Write”
button to see how the VW1 voltage changes
Look on the oscilloscope to monitor
the Wiper 1 voltage after each click of
the “Write” button.
15
In the Wiper 1 text box, type 080h (mid-scale)
The VW1 pin should go to AVDD / 2
Figure 2-12
Note 1:
DS51759A-page 26
A Digital Multi-Meter (DMM) configured to measure voltage may be used instead of
an oscill0scope.
© 2008 Microchip Technology Inc.
Installation and Operation
TABLE 2-4:
Step
16
17
DEMO STEPS USING THE PICDEM HPC EXPLORER DEMO
BOARD (CONTINUED)
Action
Now write values to the TCON register (bit 7 to
bit 4) and monitor the effects on the VW1 pin.
Result
The different Potentiometer terminals (A1, W1, and B1), will be either
connected or disconnected depending on the value.
TCON =
Result
‘x 1110 xxxx’b
B1 open,
W1 pulled high
‘x 1011 xxxx’b
A1 open,
W1 pulled low
‘x 1101 xxxx’b
W1 floating
‘x 0111 xxxx’b
A1 open,
W1 connected to
B1 (Zero-Scale)
‘x 1111 xxxx’b
All terminals connected to their
respective pin
Write assorted values to the devices memory
locations and then read the values to see what
is present. If the write is to Non-Volatile memory, power down (unplug) the MCP42XX PICtail
Plus Daughter Board and then power up to
evaluate if the non-volatile memory value is
retained.
Note 1:
© 2008 Microchip Technology Inc.
A Digital Multi-Meter (DMM) configured to measure voltage may be used instead of
an oscill0scope.
DS51759A-page 27
MCP42XX PICtail™ Plus Daughter Board User’s Guide
NOTES:
DS51759A-page 28
© 2008 Microchip Technology Inc.
MCP42XX PICTAIL™ PLUS
DAUGHTER BOARD USER’S GUIDE
Appendix A. Schematic and Layouts
A.1
INTRODUCTION
This appendix contains the schematics and layouts for the MCP42XX PICtail Plus
Daughter Board. Diagrams included in this appendix:
•
•
•
•
•
•
A.2
Board - Schematic
Board - Top Silk-screen Layer
Board - Top Component Plus Silk-screen
Board - Ground Layer
Board - Power Layer
Board - Bottom Layer
SCHEMATICS AND PCB LAYOUT
Figure A.3 shows the schematic of the MCP42XX PICtail Plus Daughter Board.
Figure A.4 shows the layout for the top layer of the MCP42XX PICtail Plus Daughter
Board. The layer order is shown in Figure A-1.
FIGURE A-1:
LAYER ORDER
Top Layer
Ground Layer
Power Layer
Bottom Layer
© 2008 Microchip Technology Inc.
DS51759A-page 29
MCP42XX PICtail™ Plus Daughter Board User’s Guide
BOARD - SCHEMATIC
M
A.3
DS51759A-page 30
© 2008 Microchip Technology Inc.
Schematic and Layouts
A.4
BOARD – TOP SILK-SCREEN LAYER
© 2008 Microchip Technology Inc.
DS51759A-page 31
MCP42XX PICtail™ Plus Daughter Board User’s Guide
A.5
BOARD – TOP COMPONENTS + SILK-SCREEN
DS51759A-page 32
© 2008 Microchip Technology Inc.
Schematic and Layouts
A.6
BOARD – GROUND LAYER
© 2008 Microchip Technology Inc.
DS51759A-page 33
MCP42XX PICtail™ Plus Daughter Board User’s Guide
A.7
BOARD – POWER LAYER
DS51759A-page 34
© 2008 Microchip Technology Inc.
Schematic and Layouts
A.8
BOARD – BOTTOM LAYER
© 2008 Microchip Technology Inc.
DS51759A-page 35
MCP42XX PICtail™ Plus Daughter Board User’s Guide
NOTES:
DS51759A-page 36
© 2008 Microchip Technology Inc.
MCP42XX PICTAIL™ PLUS
DAUGHTER BOARD USER’S GUIDE
Appendix B. Bill Of Materials (BOM)
TABLE B-1:
Qty
BILL OF MATERIALS (BOM)
Reference
Description
Manufacturer
Part Number
1
C1
CAP .1UF 25V CERAMIC X7R 0805
Panasonic® - ECG
ECJ-2VB1E104K
1
C2
CAP 1.0UF 16V CERAMIC X7R 0805
Kemet® Electronics
C0805C105K4RACTU
1
J1
CONN HEADER 6POS .100 VERT TIN
Molex/Waldom®
Electronics Corp
22-28-4060
3
JP1, JP2, JP3
CONN HEADER 2POS .100 VERT TIN
Molex/Waldom
Electronics
22-03-2021
4
JMP1, JMP2,
JMP3, JMP4
CONN HEADER 3POS .100" STR TIN
Molex/Waldom
Electronics Corp
90120-0123
1
PCB
RoHS Compliant Bare PCB,
MCP4XXX PICTail Plus Daughter Board
Microchip Technology 104-00182
Inc.
1
R1
RES 100 OHM 1/8W 1% 0805 SMD
Panasonic - ECG
ERJ-6ENF1000V
10
R2, R3, R4, R5, RES 10.0K OHM 1/8W 1% 0805 SMD
R6, R7, R8, R9,
R11, R16
Panasonic - ECG
ERJ-6ENF1002V
3
R14, R15, R18
RES 0.0 OHM 1/8W 5% 0805 SMD
Rohm
MCR10EZPJ000
1
U1
C,ANALOG MUX,DUAL,4-CHANNEL,CMOS,SSOP,16PIN,PLASTIC
16-QSOP
Maxim
MAX4582LEEE
1
U2
MCP414X/416X/424, 7/8-Bit Single/Dual
SPI Digital POT with Non-Volatile Memory
Microchip Technology MCP4261T-103E/ST
Inc.
12
VA0, VW0, VB0, PC TEST POINT COMPACT SMT
VA1, VW1, VB1,
VSS, AVDD
Note 1:
5016
The components listed in this Bill of Materials are representative of the PCB assembly. The released BOM
used in manufacturing uses all RoHS-compliant components.
TABLE B-2:
Qty
Keystone
Electronics®
BILL OF MATERIALS — COMPONENTS NOT INSTALLED
Reference
Description
Manufacturer
Part Number
0
J2
DO NOT POPULATE
CONN HEADER 6POS .100 VERT TIN
—
—
0
R10, R12, R13,
R17
DO NOT POPULATE
—
—
Note 1:
The components listed in this Bill of Materials are representative of the PCB assembly. The released BOM
used in manufacturing uses all RoHS-compliant components.
© 2008 Microchip Technology Inc.
DS51759A-page 37
MCP42XX PICtail™ Plus Daughter Board User’s Guide
NOTES:
DS51759A-page 38
© 2008 Microchip Technology Inc.
MCP42XX PICTAIL™ PLUS
DAUGHTER BOARD USER’S GUIDE
Appendix C. Board Testing
C.1
INTRODUCTION
The MCP42XX PICtail Plus Daughter Board can be used in multiple configurations.
Only a subset of these configurations are tested. The tests were performed with the
configuration shown in Figure C-1. The tested nodes are Channel 1 through Channel 4.
Other configurations, Pad connections, and circuit performance are not tested.
Channel 1
Channel 4
(Program 2 SDO Signal)
Channel 4
Channel 3
Channel 2
FIGURE C-1:
Tested Jumper Configuration and Test Points.
© 2008 Microchip Technology Inc.
DS51759A-page 39
MCP42XX PICtail™ Plus Daughter Board User’s Guide
C.2
WHAT IS TESTED
The following portions of the board are tested:
• MCP4261 (U2)
- U2 MCP4261 Pot 1 is tested in Potentiometer configuration.
• JMP3 (P1 – P2) - AVDD to P1A
• JMP4 (P1 – P2) - AVSS to P1B
• MAX4582 (U1)
- Y0 (5.0V), Y3 (9.0V), and Y2 (VSS) switching.
• Pads: VW1
C.3
WHAT IS NOT TESTED
The following portions of the board are NOT tested:
•
•
•
•
•
•
•
•
•
•
•
DS51759A-page 40
JMP1
JMP2
JMP3 (P2 – P3) - VA1 to P1A
JMP4 (P2 – P3) - VB1 to P1B
Jumpers: JP1, JP2, and JP3
MAX4582 (U1)
- Y1 (3.3V) switching.
J1: PICkit Serial Analyzer Interface (SPI)
J2: PICkit Serial Analyzer Interface (I2C)
Pads: VA0, VB0, VW0, VA1, VB1, AVDD, and VSS
Test Points: A0, B0, A1, and B1
Connections to unpopulated components
© 2008 Microchip Technology Inc.
Board Testing
NOTES:
© 2008 Microchip Technology Inc.
DS51759A-page 41
WORLDWIDE SALES AND SERVICE
AMERICAS
ASIA/PACIFIC
ASIA/PACIFIC
EUROPE
Corporate Office
2355 West Chandler Blvd.
Chandler, AZ 85224-6199
Tel: 480-792-7200
Fax: 480-792-7277
Technical Support:
http://support.microchip.com
Web Address:
www.microchip.com
Asia Pacific Office
Suites 3707-14, 37th Floor
Tower 6, The Gateway
Harbour City, Kowloon
Hong Kong
Tel: 852-2401-1200
Fax: 852-2401-3431
India - Bangalore
Tel: 91-80-4182-8400
Fax: 91-80-4182-8422
India - New Delhi
Tel: 91-11-4160-8631
Fax: 91-11-4160-8632
Austria - Wels
Tel: 43-7242-2244-39
Fax: 43-7242-2244-393
Denmark - Copenhagen
Tel: 45-4450-2828
Fax: 45-4485-2829
India - Pune
Tel: 91-20-2566-1512
Fax: 91-20-2566-1513
France - Paris
Tel: 33-1-69-53-63-20
Fax: 33-1-69-30-90-79
Japan - Yokohama
Tel: 81-45-471- 6166
Fax: 81-45-471-6122
Germany - Munich
Tel: 49-89-627-144-0
Fax: 49-89-627-144-44
Atlanta
Duluth, GA
Tel: 678-957-9614
Fax: 678-957-1455
Boston
Westborough, MA
Tel: 774-760-0087
Fax: 774-760-0088
Chicago
Itasca, IL
Tel: 630-285-0071
Fax: 630-285-0075
Dallas
Addison, TX
Tel: 972-818-7423
Fax: 972-818-2924
Detroit
Farmington Hills, MI
Tel: 248-538-2250
Fax: 248-538-2260
Kokomo
Kokomo, IN
Tel: 765-864-8360
Fax: 765-864-8387
Los Angeles
Mission Viejo, CA
Tel: 949-462-9523
Fax: 949-462-9608
Santa Clara
Santa Clara, CA
Tel: 408-961-6444
Fax: 408-961-6445
Toronto
Mississauga, Ontario,
Canada
Tel: 905-673-0699
Fax: 905-673-6509
Australia - Sydney
Tel: 61-2-9868-6733
Fax: 61-2-9868-6755
China - Beijing
Tel: 86-10-8528-2100
Fax: 86-10-8528-2104
China - Chengdu
Tel: 86-28-8665-5511
Fax: 86-28-8665-7889
Korea - Daegu
Tel: 82-53-744-4301
Fax: 82-53-744-4302
China - Hong Kong SAR
Tel: 852-2401-1200
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: 86-755-8203-2660
Fax: 86-755-8203-1760
Taiwan - Hsin Chu
Tel: 886-3-572-9526
Fax: 886-3-572-6459
China - Wuhan
Tel: 86-27-5980-5300
Fax: 86-27-5980-5118
Taiwan - Kaohsiung
Tel: 886-7-536-4818
Fax: 886-7-536-4803
China - Xiamen
Tel: 86-592-2388138
Fax: 86-592-2388130
Taiwan - Taipei
Tel: 886-2-2500-6610
Fax: 886-2-2508-0102
China - Xian
Tel: 86-29-8833-7252
Fax: 86-29-8833-7256
Thailand - Bangkok
Tel: 66-2-694-1351
Fax: 66-2-694-1350
Italy - Milan
Tel: 39-0331-742611
Fax: 39-0331-466781
Netherlands - Drunen
Tel: 31-416-690399
Fax: 31-416-690340
Spain - Madrid
Tel: 34-91-708-08-90
Fax: 34-91-708-08-91
UK - Wokingham
Tel: 44-118-921-5869
Fax: 44-118-921-5820
China - Zhuhai
Tel: 86-756-3210040
Fax: 86-756-3210049
01/02/08
DS51759A-page 42
© 2008 Microchip Technology Inc.