Microchip Technology TC1047A User Manual

Page 1
TC1047A Temperature-to-Voltage
Converter PICtail™ Demo Board
User’s Guide
© 2006 Microchip Technology Inc. DS51483B
Page 2
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in this publication regarding device applications and the like is provided only for your convenience and may be superseded by updates.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, K
EELOQ, microID, MPLAB, PIC, PICmicro, PICSTART,
PRO MATE, PowerSmart, rfPIC and SmartShunt are registered trademarks of Microchip Technology Incorporated in the U.S.A. and other countries.
AmpLab, FilterLab, Migratable Memory, 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, dsPICDEM, dsPICDEM.net, dsPICworks, ECAN, ECONOMONITOR, FanSense, FlexROM, fuzzyLAB, In-Circuit Serial Programming, ICSP, ICEPIC, Linear Active Thermistor, Mindi, MiWi, MPASM, MPLIB, MPLINK, PICkit, PICDEM, PICDEM.net, PICLAB, PICtail, PowerCal, PowerInfo, PowerMate, PowerTool, REAL ICE, rfLAB, rfPICDEM, Select Mode, Smart Serial, SmartTel, 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.
© 2006, 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 Mountain View, California. The Company’s quality system processes and procedures are for its PICmicro 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.
®
8-bit MCUs, KEELOQ
®
code hopping devices, Serial
DS51483B-page ii © 2006 Microchip Technology Inc.
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TC1047A TEMPERATURE-TO-VOLTAGE
CONVERTER PICtail™ DEMO BOARD
USER’S GUIDE
Table of Contents
Preface ........................................................................................................................... 1
Chapter 1. Product Overview
1.1 Introduction ..................................................................................................... 5
1.2 What is the TC1047A Temperature-to-Voltage Converter PICtail™ Demo
Board? ............................................................................................................ 5
1.3 What the TC1047A Temperature-to-Voltage Converter PICtail™ Demo
Board Kit includes ........................................................................................... 5
Chapter 2. Installation and Operation
2.1 Introduction ..................................................................................................... 7
2.2 Features ......................................................................................................... 7
2.3 Getting Started ............................................................................................... 7
Appendix A. Schematic and Layouts
A.1 Introduction .................................................................................................. 13
A.2 Board SchemAtic ....................................................................................... 14
A.3 Board - Top Layer ...................................................................................... 14
A.4 Board - Silk screen Layer ........................................................................... 15
A.5 Board - Bottom Layer ................................................................................. 15
Appendix B. Bill Of Materials (BOM)
Worldwide Sales and Service .................................................................................... 18
© 2006 Microchip Technology Inc. DS51483B-page iii
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TC1047A Temperature-to-Voltage Converter PICtail™ Demo Board User’s Guide
NOTES:
DS51483B-page iv © 2006 Microchip Technology Inc.
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TC1047A TEMPERATURE-TO-VOLTAGE
CONVERTER PICtail™ DEMO 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.
INTRODUCTION
This chapter contains general information that will be useful to know before using the TC1047A Temperature-to-Voltage Converter PICtail™ Demo Board. 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 TC1047A Temperature-to-Voltage Converter PICtail™ Demo Board as a development tool. The manual layout is as follows:
Chapter 1. “Product Overview” – Important information about the TC1047A
Temperature-to-Voltage Converter PICtail™ Demo Board.
Chapter 2. “Installation and Operation” – This chapter includes instructions on
how to get started, with a detailed description of each of the board’s functions.
Appendix A. “Schematic and Layouts” – Shows the schematic and layout
diagrams for the TC1047A Temperature-to-Voltage Converter PICtail™ Demo Board.
Appendix B. “Bill Of Materials (BOM)” – Lists the parts used to build the
TC1047A Temperature-to-Voltage Converter PICtail™ Demo Board.
© 2006 Microchip Technology Inc. DS51483B-page 1
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TC1047A Temperature-to-Voltage Converter PICtail™ Demo Board User’s Guide
CONVENTIONS USED IN THIS GUIDE
This manual uses the following documentation conventions:
DOCUMENTATION CONVENTIONS
Description Represents Examples
Arial font:
Italic characters Referenced books MPLAB® IDE User’s Guide
Emphasized text ...is the only compiler...
Initial caps A window the Output window
A dialog the Settings dialog A menu selection select Enable Programmer
Quotes A field name in a window or
dialog
Underlined, italic text with right angle bracket
Bold characters A dialog button Click OK
N‘Rnnnn A number in verilog format,
Text in angle brackets < > A key on the keyboard Press <Enter>, <F1>
Courier New font:
Plain Courier New Sample source code #define START
Italic Courier New A variable argument file.o, where file can be
Square brackets [ ] Optional arguments mcc18 [options] file
Curly brackets and pipe character: { | }
Ellipses... Replaces repeated text var_name [,
A menu path File>Save
A tab Click the Power tab
where N is the total number of digits, R is the radix and n is a digit.
Filenames autoexec.bat File paths c:\mcc18\h Keywords _asm, _endasm, static Command-line options -Opa+, -Opa- Bit values 0, 1 Constants 0xFF, ‘A’
Choice of mutually exclusive arguments; an OR selection
Represents code supplied by user
“Save project before build”
4‘b0010, 2‘hF1
any valid filename
[options]
errorlevel {0|1}
var_name...]
void main (void) { ... }
RECOMMENDED READING
This user's guide describes how to use TC1047A Temperature-to-Voltage Converter PICtail™ Demo Board. The following Microchip documents are available and recommended as supplemental reference resources.
TC1047A Data Sheet, “Precision Temperature-to-Voltage Converter” (DS21498)
This data sheet provides detailed information regarding the TC1047A device.
DS51483B-page 2 © 2006 Microchip Technology Inc.
Page 7
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
• Development Systems Information Line
Customers should contact their distributor, representative or field application engineer 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
Preface
DOCUMENT REVISION HISTORY
Revision B (July 2006)
• Add disclaimer to Bill of Materials regarding RoHS-Compliant part numbers.
Revision A (June 2004)
• Initial Release of this Document.
© 2006 Microchip Technology Inc. DS51483B-page 3
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TC1047A Temperature-to-Voltage Converter PICtail™ Demo Board User’s Guide
NOTES:
DS51483B-page 4 © 2006 Microchip Technology Inc.
Page 9
TC1047A TEMPERATURE-TO-VOLTAGE
CONVERTER PICtail™ DEMO BOARD
USER’S GUIDE

Chapter 1. Product Overview

1.1 INTRODUCTION

This chapter provides an overview of the TC1047A Temperature-to-Voltage Converter PICtail™ Demo Board. and covers the following topics:
• What is the TC1047A Temperature-to-Voltage Converter PICtail™ Demo Board?
• What the TC1047A Temperature-to-Voltage Converter PICtail™ Demo Board Kit
includes

1.2 WHAT IS THE TC1047A TEMPERATURE-TO-VOLTAGE CONVERTER PICTAIL™ DEMO BOARD?

The TC1047A Temperature-to-Voltage Converter PICtail™ Demo Board demonstrates how to interface the TC1047A to a PICmicro Flash Starter Kit as a platform. A PIC16F676 14-pin Flash-based 8-bit CMOS microcontoller device is included with the Demo Board that can be used with PICkit 1 Flash Starter Kit, along with firmware that provides the interface to the TC1047A and the voltage-to-temperature conversion routines.
The TC1047A Temperature-to-Voltage Converter PICtail™ Demo Board can also be used as a “stand-alone” module to quickly add thermal sensing capablity to any existing application. This basic sensor functionality is implemented on a small Printed Circuit Board (PCB) and an interface via a standard 100 mil header.
®
microcontroller using the PICkit™ 1

1.3 WHAT THE TC1047A TEMPERATURE-TO-VOLTAGE CONVERTER PICTAIL™ DEMO BOARD KIT INCLUDES

This TC1047A Temperature-to-Voltage Converter PICtail™ Demo Board Kit includes:
• The TC1047A Temperature-to-Voltage Converter PICtail™ Demo Board
• TC1047A Temperature-to-Voltage Converter PICtail™ Demo Board User’s Guide (DS51483)
• AN938, “Interfacing a TC1047A Analog Output Temperature Sensor to a PICmicro Microcontroller”, DS00938
• PIC16F676 14-pin Flash-based 8-bit CMOS Microcontroller
• PIC16F676 Firmware (TC1047A PICtail.HEX)
© 2006 Microchip Technology Inc. DS51483B-page 5
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TC1047A Temperature-to-Voltage Converter PICtail™ Demo Board User’s Guide
NOTES:
DS51483B-page 6 © 2006 Microchip Technology Inc.
Page 11

Chapter 2. Installation and Operation

2.1 INTRODUCTION

The TC1047A Temperature-to-Voltage Converter PICtail™ Demo Board demonstrates how to interface the TC1047A device to a microcontroller for use by the system designer as an example of how to integrate an analog temperature sensor into their system.

2.2 FEATURES

The TC1047A Temperature-to-Voltage Converter PICtail™ Demo Board has the following features:
• Small PCB layout
• Standard 100 mil 14-pin header (P1) for easy interface to PICkit™ 1 Flash Starter Kit or custom application

2.3 GETTING STARTED

TC1047A TEMPERATURE-TO-VOLTAGE
CONVERTER PICtail™ DEMO BOARD
USER’S GUIDE
PC
This section describes how to quickly set up the TC1047A Temperature-to-Voltage Converter PICtail™ Demo Board and PICkit 1 Flash Starter Kit. A block diagram of the setup is presented in Figure 2-1. Refer to Application Note 938, “Interfacing a TC1047A Analog Output Temperature Sensor to a PICmicro detailed information on the TC1047A Temperature-to-Voltage Converter PICtail™ Demo Board and the TC1047A PICtail.HEX firmware.
PICkit™ 1 FLASH Starter Kit
PICmicro
FLASH
MCU
USB
LED Array
®
ADC
V
DD
GND
J3
®
Microcontroller” (DS00938), for
TC1047A
Temp erat ure
Sensor
P1
V
OUT
+5V
TC1047A PICtail™
Demo Board
D4D5D6D7
D0D1D2D3
FIGURE 2-1: TC1047A Temperature-to-Voltage Converter PICtail™ Demo Board Block Diagram.
© 2006 Microchip Technology Inc. DS51483B-page 7
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TC1047A Temperature-to-Voltage Converter PICtail™ Demo Board User’s Guide
2.3.1 Hardware Setup
1. Connect the P1 header of the TC1047A Temperature-to-Voltage Converter PICtail™ Demo Board to the J3 connector on the PICkit 1 Flash Starter Kit board. Refer to Figure 2-2 for proper orientation of the TC1047A Temperature-to-Voltage Converter PICtail™ Demo Board and Figure 2-3 for the simplified board schematic.
2. Insert the PIC16F676 into the Evaluation socket of the PICkit 1 Flash Starter Kit board.
3. Connect the PICkit 1 Flash Starter Kit USB cable from the USB port of the PC to the USB port (J1) on the PICkit 1 Flash Starter Kit board. +5V power is supplied to the PICkit 1 Flash Starter Kit board via the USB cable. The green POWER LED and the red BUSY LED will turn on, indicating that power is being supplied to the board.
Expansion Header (J3)
USB Cable
LED D7
TC1047A PICtail™ Demo Board
LED D0
Insert PIC16F676
PICkit™ 1 FLASH Starter Kit
FIGURE 2-2: TC1047A PICtail™ Daughter Board and PICkit™ 1 Flash Starter Kit.
PICkit™ 1
FLASH Starter Kit
+5V
To A D C
RC0
J3 13
10
TC1047A PICtail™ Demo Board
(SOT23-3)
P1
13
10
1
V
DD
U1
2
V
OUT
C
1
0.1 µF
V
SS
3
GND
14
14
FIGURE 2-3: Simplified TC1047A PICtail™ Daughter Board Schematic.
DS51483B-page 8 © 2006 Microchip Technology Inc.
Page 13
Installation and Operation
2.3.2 Programming the PIC16F676
1. Download and install the PICkit 1 Flash Starter Kit software to your PC.
2. Copy the TC1047A PICtail.HEX file, supplied on the CD that came with this
kit, to your PC.
3. When the PICkit 1 Flash Starter Kit is started, the main window will be displayed
on the PC, as indicated in Figure 2-4.
FIGURE 2-4: PICkit™ 1 Flash Starter Kit GUI Window on the PC.
4. Toggle device power to off by unchecking the Device Power box under Board
Controls in the PICkit 1 Flash Starter Kit window (Figure 2-4). The BUSY LED
on the PICkit 1 Flash Starter Kit board will turn off once the device power is turned off.
5. Click on the Erase button in the window to ensure that the PIC16F676 device has
been erased.
6. From the File pull down menu, select Import HEX. A file window will appear.
Select and open “TC1047A PICtail.HEX”.
7. Click on the Write Device button in the PICkit 1 Flash Starter Kit window. The
PIC16F676 device will be written to with the TC1047A PICtail.HEX firmware. When completed, the status bar at the bottom of the window will indicate Write Successful.
8. Toggle the device power on by checking the Device Power box under Board
Controls in the PICkit 1 Flash Starter Kit window. The BUSY LED on the PICkit 1 Flash Starter Kit board will turn on when device power is turned on. Some of the red LEDs (D7-D0) will turn on as well.
© 2006 Microchip Technology Inc. DS51483B-page 9
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TC1047A Temperature-to-Voltage Converter PICtail™ Demo Board User’s Guide
At this point, the PIC16F676 device is reading the temperature data from the TC1047A and displaying the temperature on the eight red LEDs (D7-D0) on the PICkit 1 Flash Starter Kit board. The ten’s digit of the temperature data is represented by bits D7-D4, with D7 being defined as the Most Significant bit (MSb). The one’s digit is defined by bits D3-D0, with D3 serving as the MSb.
The temperature can be displayed in degrees Fahrenheit or Celsius. The board defaults to the temperature being displayed in Fahrenheit. To display the temperature in Celsius, depress the SW1 push button switch on the PICkit 1 Flash Starter Kit board. The display will change back to Fahrenheit once the SW1 push button switch is released.
Table 2-1 provides a list of the LED patterns that correspond to the BCD coding representation of the temperature measurement.
TABLE 2-1: BCD CODE REPRESENTATION ON PICkit™ 1 FLASH STARTER
KIT LEDS
Binary
0000 0OFFOFFOFFOFF
0001 1 OFF OFF OFF ON
0010 2OFFOFFONOFF
0011 3OFFOFFONON
0100 4 OFF ON OFF OFF
0101 5 OFF ON OFF ON
0110 6 OFF ON ON OFF
0111 7 OFF ON ON ON
1000 8ONOFFOFFOFF
1001 9ONOFFOFFON
BCD
Number
D7 D3
D6 D2
D5 D1
D4 D0
For example, a temperature reading of 75°F will be displayed by turning on LEDs D6, D5, D4, D2 and D0 (LEDs D7, D3 and D1 will be turned off), as indicated in Figure 2-5.
DS51483B-page 10 © 2006 Microchip Technology Inc.
Page 15
Installation and Operation
TC1047A Temp Converter
Demo Board
Temperature
Displayed in
BCD
J3
D7 D6 D5 D4
7
D3 D2 D1 D0
5
BUSY
POWER
PICkit™ FLASH Starter Kit Board
FIGURE 2-5: PICkit™ 1 Flash Starter Kit LED Display of 75°F.
The temperature display will change when the temperature of the TC1047A is varied. A simple example of this can be seen by pressing your finger on the TC1047A device (U1) on the TC1047A Temperature-to-Voltage Converter PICtail™ Demo Board. More dramatic changes can be seen by applying heat to the TC1047A with a hair dryer or hot air gun, or by cooling the device down.
Refer to the TC1047A Data Sheet, “Precision Temperature-to-Voltage Converter” (DS21498), for more information on the TC1047A, and Application Note 938, “Interfacing a TC1047A Analog Output Temperature Sensor to a PICmicro
®
Microcontroller”, for more information on the TC1047A Temperature-to-Voltage Con­verter PICtail™ Demo Board and the TC1047A PICtail.HEX firmware.
© 2006 Microchip Technology Inc. DS51483B-page 11
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TC1047A Temperature-to-Voltage Converter PICtail™ Demo Board User’s Guide
NOTES:
DS51483B-page 12 © 2006 Microchip Technology Inc.
Page 17
Appendix A. Schematic and Layouts

A.1 INTRODUCTION

This appendix contains the following schematics and layouts for the TC1047A Temper­ature-to-Voltage Converter PICtail™ Demo Board User’s Guide:
• Board Schematic
• Board - Top Layer
• Board - Silk Screen Layer
• Board - Bottom Layer
TC1047A TEMPERATURE-TO-VOLTAGE
CONVERTER PICtail™ DEMO BOARD
USER’S GUIDE
© 2006 Microchip Technology Inc. DS51483B-page 13
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TC1047A Temperature-to-Voltage Converter PICtail™ Demo Board User’s Guide
A.2 BOARD SCHEMATIC
A.3 BOARD - TOP LAYER
PICkit™ 1 Flash Starter Kit Expansion Header J3
DS51483B-page 14 © 2006 Microchip Technology Inc.
Page 19
A.4 BOARD - SILK SCREEN LAYER
Schematic and Layouts
A.5 BOARD - BOTTOM LAYER
© 2006 Microchip Technology Inc. DS51483B-page 15
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TC1047A Temperature-to-Voltage Converter PICtail™ Demo Board User’s Guide
NOTES:
DS51483B-page 16 © 2006 Microchip Technology Inc.
Page 21
TC1047A TEMPERATURE-TO-VOLTAGE
CONVERTER PICtail™ DEMO BOARD
USER’S GUIDE
Appendix B. Bill Of Materials (BOM)
TABLE B-1: BILL OF MATERIALS
Qty Designator Description Manufacturer Part Number
1 C1 Cap., 0.1 µF, 25V, Ceramic, X7R 0805 Panasonic
1 P1 Conn Hdr Brkway .100 40pos RT/A AMP®/Tyco®
1 U1 TC1047A Precision Temperature To Voltage
Converter
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.
Technology Inc.
®
-ECG ECJ-2VB1E104K
Electronics
Microchip
4-103765-0
TC1047AVNB
© 2006 Microchip Technology Inc. DS51483B-page 17
Page 22

WORLDWIDE SALES AND SERVICE

AMERICAS
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
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ASIA/PACIFIC
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Tel: 61-2-9868-6733 Fax: 61-2-9868-6755
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Tel: 86-10-8528-2100 Fax: 86-10-8528-2104
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06/08/06
DS51483B-page 18 © 2006 Microchip Technology Inc.
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