Resistive Temperature Detector (RTD)
Reference Design
2010 Microchip Technology Inc.
DS51891A
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and may be superseded by updates.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
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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, 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.
© 2010, Microchip Technology Incorporated, Printed in the
U.S.A., All Rights Reserved.
Printed on recycled paper.
ISBN: 978-1-63276-347-1
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.
DS51891A-page 2
2010 Microchip Technology Inc.
RTD REFERENCE DESIGN
Table of Contents
Preface ........................................................................................................................... 5
Introduction............................................................................................................ 5
Document Layout .................................................................................................. 5
Conventions Used in this Guide ............................................................................ 6
Recommended Reading........................................................................................ 7
The Microchip Web Site ........................................................................................ 7
Customer Support ................................................................................................. 7
Document Revision History ................................................................................... 7
Chapter 1. Product Overview
1.1 Introduction ..................................................................................................... 9
1.2 What is the RTD Reference Design? ............................................................. 9
1.3 What the RTD Reference Design kit includes ................................................ 9
Chapter 2. Installation and Operation
2.1 Introduction ................................................................................................... 11
2.2 Features ....................................................................................................... 11
2.3 Getting Started ............................................................................................. 12
Appendix A. Schematic and Layouts
A.1 Introduction .................................................................................................. 17
A.2 Board - Schematic ...................................................................................... 18
A.3 Board - Top Silk and Pads ........................................................................... 19
A.4 Board - Top Layer ........................................................................................ 19
A.5 Board - Bottom Silk and Pads ...................................................................... 20
A.6 Board - Bottom Layer ................................................................................... 20
Appendix B. Bill of Materials
Worldwide Sales and Service .................................................................................... 22
2010 Microchip Technology Inc.
DS51891A-page 3
RTD Reference Design
NOTES:
DS51891A-page 4
2010 Microchip Technology Inc.
RTD REFERENCE DESIGN
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 online help files.
INTRODUCTION
This chapter contains general information that will be useful to know before using the
RTD Reference Design. 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 RTD Reference Design 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 RTD
Reference Design.
• Chapter 2. “Installation and Operation” – This chapter includes a detailed
description of each function of the demo board and instructions for how to begin
using the board.
• Appendix A. “Schematic and Layouts” – Shows the schematic and layout
diagrams for the RTD Reference Design.
• Appendix B. “Bill of Materials” – Lists the parts used to build the RTD
Reference Design.
2010 Microchip Technology Inc.
DS51891A-page 5
RTD Reference Design
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
DS51891A-page 6
Examples
File>Save
Press ,
#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)
{ ...
}
2010 Microchip Technology Inc.
Preface
RECOMMENDED READING
This user's guide describes how to use the RTD Reference Design. Other useful
documents are listed below. The following Microchip documents are available and
recommended as supplemental reference resources.
MCP3551 Data Sheet, “Low-Power, Single-Channel 22-Bit Delta-Sigma ADCs”
(DS21950)
This data sheet provides detailed information regarding the MCP3551 device.
AN1154 - “Precision RTD Instrumentation for Temperature Sensing” (DS01154)
This application note provides information on the RTD Instrumentation technique for
high performance thermal management applications.
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 2010)
• Initial Release of this Document.
2010 Microchip Technology Inc.
DS51891A-page 7
RTD Reference Design
NOTES:
DS51891A-page 8
2010 Microchip Technology Inc.
RTD REFERENCE DESIGN
Chapter 1. Product Overview
1.1
INTRODUCTION
The following name and assembly number are found on the RTD Reference Design’s
Printed Circuit Board (PCB):
• 102-00115
1.2
WHAT IS THE RTD REFERENCE DESIGN?
The RTD Reference Design demonstrates how to implement a Resistive Temperature
Detector (RTD) and accurately measure temperature. This solution uses the MCP3551
22-Bit Analog-to-Digital Converter (ADC) to measure voltage across the RTD. The
ADC and the RTD are referenced using an on-board reference voltage, and the ADC
inputs are directly connected to the RTD terminals. This provides a ratio metric temperature measurement. The solution uses a current limiting resistor to bias the RTD. It provides a reliable and accurate RTD instrumentation without the need for extensive circuit
compensation and calibration routines.
In addition, this reference design includes a silicon temperature sensor, MCP9804.
This sensor is used for comparison only, it is not needed for the RTD instrumentation
circuit. The MCP3551 and MCP9804 outputs are read using a USB PIC® MCU. This
controller is also connected to a PC using USB interface. The Thermal Management
software is used to plot the RTD temperature data in strip chart format.
1.3
WHAT THE RTD REFERENCE DESIGN KIT INCLUDES
This RTD Reference Design Kit includes:
• RTD Reference Design, 102-00115
• USB cable
• Important Information Sheet
2010 Microchip Technology Inc.
DS51891A-page 9
RTD Reference Design
NOTES:
DS51891A-page 10
2010 Microchip Technology Inc.
RTD REFERENCE DESIGN
Chapter 2. Installation and Operation
2.1
INTRODUCTION
The RTD Reference Design demonstrates Microchip’s solution to accurately measure
temperature using a 22-bit ADC, MCP3551. This solution eliminates the need for the
traditional analog instrumentation system calibration or gain and offset trimming
techniques. In addition, the effect of self-heat can be minimized by limiting the RTD
biasing current using a single resistor.
This reference design uses the technique described in Application Note AN1154 “Precision RTD Instrumentation for Temperature Sensing” (DS01154). The RTD
Reference Design allows users to evaluate Microchip’s solution to accurately measure
temperature using an RTD. RTD resistance availability typically ranges from 100 to
5000. When biasing an RTD to measure temperature, self-heat due to power
dissipation has to be considered. In order to output measurable voltage across the RTD
for wide temperature range, the biasing current has to be relatively high. This causes
higher power dissipation through heat and skews the temperature reading. This
solution uses a ratiometric technique between the RTD resistance and the ADC
resolution to achieve high accuracy throughout the entire sensor range.
This solution uses an on-board (local) surface mount RTD and an external RTD. The
local and external RTDs are selected using JP2. The MCP9804 temperature sensor is
also used to measure local temperature.
The MCP3551 and the MCP9804 serial output lines are connected to a PIC MCU. RTD
linearization is computed with the microcontroller. This controller communicates with a
PC via the USB interface. The temperature data is then displayed on the PC using the
Thermal Management software in strip chart format.
2.2
FEATURES
The RTD Reference Design has the following features:
•
•
•
•
•
•
•
Surface mount PT100 RTD
External RTD connector (not included)
Thermal Management GUI
22-Bit ADC MCP3551
±1°C Maximum accuracy temperature sensor MCP9804
PIC18F2550 microcontroller
USB interface to PC
2010 Microchip Technology Inc.
DS51891A-page 11
RTD Reference Design
2.3
GETTING STARTED
This section describes how to quickly configure the RTD Reference Design. A
simplified block diagram of the configuration is provided in Figure 2-1.
VDD
VLDO
LDO
C
C
RB 5%
VREF
1 µf
VDD
PIC®
MCU
FIGURE 2-1:
2.3.1
3
SPI
RA 1%
VREF
+
RTD
MCP3551
-
RTD Reference Design Simplified Block Diagram.
Hardware Setup
1. Connect the USB cable to PC
2. Select JP2 for Local/External RTD
3. Start the Thermal Management software
2.3.2
Software Setup
Once the USB interface is secured, start the Thermal Management Software. When the
software starts, if the hardware is successfully detected, the GUI will be displayed
(Figure 2-2).
FIGURE 2-2:
DS51891A-page 12
RTD Reference Design GUI.
2010 Microchip Technology Inc.
Installation and Operation
This configuration window allows the user to set some parameters, such as
measurement unit and calibration temperature.
The Play, Stop, and Reset icons (Figure 2-3) can be used to perform a continuous
data-log. The Record icon enables the user to data-log to an external file. The logging
interval can be adjusted using the Interval Scroll bar from 100 ms to 30s.
Stop Recording Real-Time acquisition
Start/Record Real-Time acquisition
Reset Real-Time acquisition
Stop Real-Time acquisition
Start Real-Time acquisition
FIGURE 2-3:
Real-Time Acquisition.
The RTD temperature is linearized using ASTM specification #E 1137. The
linearization is implemented in the PIC MCU.
The Data Acquisition charting tool can be customized by double-clicking the chart, as
shown in Figure 2-4. Additional options are available by right-clicking the chart. The
user can also zoom into a specific plot range by clicking and dragging the section. The
data in the chart can also be exported using the Export button.
Export Data
FIGURE 2-4:
2010 Microchip Technology Inc.
Chart Setup Options.
DS51891A-page 13
RTD Reference Design
2.3.3
Sensor Calibration
2.3.3.1
RTD SETUP
The RTD sensor can be calibrated using the GUI. Once the RTD is exposed to the
dies calibration temperature, simply type in the temperature in the Calibration
Temperature field and click the Calibrate button. When the temperature is
calibrated and the calibration offset is stored in the PIC MCU EEPROM, the
calibration offset is displayed in the RTD Calibration Offset text box. The Reset
button resets the calibration offset to “0”.
FIGURE 2-5:
Sensor Calibration.
The GUI also enables users to set the RTD biasing resistor value, R9. If a resistor other
than a 100 RTD resistor is connected, then replace R9 (for operation and details refer
to the AN1154). The Reset button sets R9 to the default value of 6800.
FIGURE 2-6:
DS51891A-page 14
Setting RTD Biasing Resistor.
2010 Microchip Technology Inc.
Installation and Operation
2.3.3.2
MCP9804 SETUP
The MCP9804 is a silicon temperature sensor which measures temperature with
±0.25°C nominal and ±1°C maximum accuracy from -40°C to +125°C. This sensor has
multiple user programmable features such as Alert Output limits, output hysteresis and
mode (see Figure 2-7). The output mode can be set up as either comparator or
interrupt output with an active-high or active-low levels. The temperature measurement
resolution can also be set up.
.
FIGURE 2-7:
2010 Microchip Technology Inc.
MCP9804 Setup.
DS51891A-page 15
RTD Reference Design
NOTES:
DS51891A-page 16
2010 Microchip Technology Inc.
RTD REFERENCE DESIGN
Appendix A. Schematic and Layouts
A.1
INTRODUCTION
This appendix contains the following schematics and layouts for the RTD Reference
Design:
•
•
•
•
•
Board – Schematic
Board – Top Silk and Pads
Board – Top Layer
Board – Bottom Silk and Pads
Board – Bottom Layer
2010 Microchip Technology Inc.
DS51891A-page 17
RTD Reference Design
A.2
BOARD - SCHEMATIC
DS51891A-page 18
2010 Microchip Technology Inc.
Schematic and Layouts
A.3
BOARD - TOP SILK AND PADS
A.4
BOARD - TOP LAYER
2010 Microchip Technology Inc.
DS51891A-page 19
RTD Reference Design
A.5
BOARD - BOTTOM SILK AND PADS
A.6
BOARD - BOTTOM LAYER
DS51891A-page 20
2010 Microchip Technology Inc.
RTD REFERENCE DESIGN
Appendix B. Bill of Materials
TABLE B-1:
Qty
BILL OF MATERIALS
Referenc
e
Description
Manufacturer
Part Number
4
C1, C6,
CAP .1UF 25V CERAMIC X7R 0805
C11, C17
Panasonic® - ECG
ECJ-2VB1E104K
2
C2, C7
CAP 1.0UF 16V CERAMIC X7R 0805
Kemet® Electronics
C0805C105K4RACTU
2
C3, C4
CAP 10UF 10V CERAMIC F 0805
Panasonic - ECG
ECJ-2FF1A106Z
1
C10
CAP .47UF 16V CERAMIC X7R 0805
Panasonic - ECG
ECJ-2YB1C474K
2
C13, C14 CAP 22PF 50V CERM CHIP 0805 SMD
Panasonic - ECG
ECJ-2VC1H220J
1
J2
Phoenix Contact
1725672
CONN TERM BLOCK 2.54MM 4POS
1
J3
CONN MINI USB RCPT RA TYPE B SMD Tyco Electronics
1734035-2
1
J5
DO NOT POPULATE
HEADER 1X6
—
—
1
JP1
DO NOT POPULATE
SHUNT ECONOMY 2POS .100 TIN
Tyco® Electronics/Amp
2-382811-1
1
JP1
DO NOT POPULATE
CONN HEADER VERT 2POS .100 TIN
Tyco Electronics/Amp
3-644695-2
1
JP2
CONN HEADER VERT 2POS .100 TIN
Tyco Electronics/Amp
3-644695-2
3 POS Jumper Switch
ITW® Pancon
JSC416G0
1/16 2 JP2
Electronics®
1
L1
INDUCTOR 10UH 100MA 0805
Murata
1
PCB
RoHS Compliant Bare PCB,
RTD Reference Board
Microchip Technology Inc.
104-000115
3
R1, R2,
R6
RES 10.0K OHM 1/8W 1% 0805 SMD
Panasonic - ECG
ERJ-6ENF1002V
1
R4
RES 1.0 OHM 1/8W 1% 0805 SMD
Panasonic - ECG
ERJ-6RQF1R0V
2
R9, R12
RES 6.8K OHM 1/10W .1% 0805 SMD
Panasonic - ECG
ERA-6YEB682V
1
R10
RES 0.0 OHM 1/8W 5% 0805 SMD
Panasonic - ECG
ERJ-6GEY0R00V
1
R11
PLATINUM RTD CHIP TEMPERATURE
SENSOR SMD (RTD)
ENERCORP Instruments
Ltd.
PCS 1.1503.1
8
TP1-TP8
TEST POINT PC COMPACT SMT
Keystone Electronics®
5016
1
U1
28/40/44-Pin, High-Performance,
Enhanced Flash, USB Microcontrollers
with nanoWatt Technology
Microchip Technology Inc.
PIC18F2550-I/SO
1
U2
IC ADC 22 BIT 2.7V 1 CH SPI 8SOIC
Microchip Technology Inc.
MCP3551-E/SN
1
U3
Low Dropout Positive Voltage Regulator
Microchip Technology Inc.
MCP1701T-5002I/CB
1
U4
2-Wire High-Accuracy Temperature
Sensor
Microchip Technology Inc.
MCP9804T-E/MC
1
Y1
CRYSTAL 20.0000 MHZ SERIES SMT
CTS® Electronic
Components
ATS200SM
Note 1:
2:
LQM21FN100M70L
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.
Jumper switch comes in strips of 16 switches. Cut individual jumper switch as needed.
2010 Microchip Technology Inc.
DS51891A-page 21
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: 91-80-3090-4444
Fax: 91-80-3090-4123
India - New Delhi
Tel: 91-11-4160-8631
Fax: 91-11-4160-8632
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Tel: 43-7242-2244-39
Fax: 43-7242-2244-393
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Tel: 45-4450-2828
Fax: 45-4485-2829
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Fax: 949-462-9608
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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 - Chongqing
Tel: 86-23-8980-9588
Fax: 86-23-8980-9500
Korea - Seoul
Tel: 82-2-554-7200
Fax: 82-2-558-5932 or
82-2-558-5934
China - Hong Kong SAR
Tel: 852-2401-1200
Fax: 852-2401-3431
Malaysia - Kuala Lumpur
Tel: 60-3-6201-9857
Fax: 60-3-6201-9859
China - Nanjing
Tel: 86-25-8473-2460
Fax: 86-25-8473-2470
Malaysia - Penang
Tel: 60-4-227-8870
Fax: 60-4-227-4068
China - Qingdao
Tel: 86-532-8502-7355
Fax: 86-532-8502-7205
Philippines - Manila
Tel: 63-2-634-9065
Fax: 63-2-634-9069
China - Shanghai
Tel: 86-21-5407-5533
Fax: 86-21-5407-5066
Singapore
Tel: 65-6334-8870
Fax: 65-6334-8850
China - Shenyang
Tel: 86-24-2334-2829
Fax: 86-24-2334-2393
Taiwan - Hsin Chu
Tel: 886-3-6578-300
Fax: 886-3-6578-370
China - Shenzhen
Tel: 86-755-8203-2660
Fax: 86-755-8203-1760
Taiwan - Kaohsiung
Tel: 886-7-213-7830
Fax: 886-7-330-9305
China - Wuhan
Tel: 86-27-5980-5300
Fax: 86-27-5980-5118
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 - Xiamen
Tel: 86-592-2388138
Fax: 86-592-2388130
China - Zhuhai
Tel: 86-756-3210040
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08/04/10
DS51891A-page 22
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