TC1047A Temperature-to-Voltage
Converter PICtail™ Demo Board
User’s Guide
© 2006 Microchip Technology Inc.
DS51483B
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DS51483B-page ii
© 2006 Microchip Technology Inc.
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
TC1047A Temperature-to-Voltage Converter PICtail™ Demo Board User’s Guide
NOTES:
DS51483B-page iv
© 2006 Microchip Technology Inc.
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
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
Arial font:
Italic characters
Represents
Examples
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
File>Save
Press <Enter>, <F1>
var_name [,
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.
Preface
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
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
TC1047A Temperature-to-Voltage Converter PICtail™ Demo Board User’s Guide
NOTES:
DS51483B-page 4
© 2006 Microchip Technology Inc.
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® microcontroller using the PICkit™ 1
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.
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
TC1047A Temperature-to-Voltage Converter PICtail™ Demo Board User’s Guide
NOTES:
DS51483B-page 6
© 2006 Microchip Technology Inc.
TC1047A TEMPERATURE-TO-VOLTAGE
CONVERTER PICtail™ DEMO BOARD
USER’S GUIDE
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
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® Microcontroller” (DS00938), for
detailed information on the TC1047A Temperature-to-Voltage Converter PICtail™
Demo Board and the TC1047A PICtail.HEX firmware.
PICkit™ 1 FLASH Starter Kit
TC1047A
Temperature
Sensor
PICmicro®
FLASH
MCU
PC
USB
J3
P1
VOUT
ADC
VDD
GND
+5V
TC1047A PICtail™
Demo Board
LED Array
D7 D6 D5 D4
D3 D2 D1 D0
FIGURE 2-1:
TC1047A Temperature-to-Voltage Converter PICtail™ Demo Board Block Diagram.
© 2006 Microchip Technology Inc.
DS51483B-page 7
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
TC1047A PICtail™ Demo Board
LED D0
LED D7
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
J3
13
TC1047A PICtail™ Demo Board
(SOT23-3)
P1
13
C
1
1
VDD
To ADC RC0
GND
FIGURE 2-3:
DS51483B-page 8
10
10
14
14
2
0.1 µF
U1
VOUT
VSS
3
Simplified TC1047A PICtail™ Daughter Board Schematic.
© 2006 Microchip Technology Inc.
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
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
BCD
Number
D7
D3
D6
D2
D5
D1
D4
D0
0000
0
OFF
OFF
OFF
OFF
0001
1
OFF
OFF
OFF
ON
0010
2
OFF
OFF
ON
OFF
0011
3
OFF
OFF
ON
ON
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
8
ON
OFF
OFF
OFF
1001
9
ON
OFF
OFF
ON
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.
Installation and Operation
D7
D6
D5
D4
D3
D2
D1
D0
7
5
POWER BUSY
Temperature
Displayed in
BCD
J3
TC1047A Temp Converter
Demo Board
FIGURE 2-5:
PICkit™ FLASH
Starter Kit Board
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
TC1047A Temperature-to-Voltage Converter PICtail™ Demo Board User’s Guide
NOTES:
DS51483B-page 12
© 2006 Microchip Technology Inc.
TC1047A TEMPERATURE-TO-VOLTAGE
CONVERTER PICtail™ DEMO BOARD
USER’S GUIDE
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
© 2006 Microchip Technology Inc.
DS51483B-page 13
TC1047A Temperature-to-Voltage Converter PICtail™ Demo Board User’s Guide
A.2
BOARD SCHEMATIC
PICkit™ 1 Flash Starter Kit
Expansion Header J3
A.3
BOARD - TOP LAYER
DS51483B-page 14
© 2006 Microchip Technology Inc.
Schematic and Layouts
A.4
BOARD - SILK SCREEN LAYER
A.5
BOARD - BOTTOM LAYER
© 2006 Microchip Technology Inc.
DS51483B-page 15
TC1047A Temperature-to-Voltage Converter PICtail™ Demo Board User’s Guide
NOTES:
DS51483B-page 16
© 2006 Microchip Technology Inc.
TC1047A TEMPERATURE-TO-VOLTAGE
CONVERTER PICtail™ DEMO BOARD
USER’S GUIDE
Appendix B. Bill Of Materials (BOM)
TABLE B-1:
Qty
1
BILL OF MATERIALS
Designator
C1
Description
Cap., 0.1 µF, 25V, Ceramic, X7R 0805
1
P1
Conn Hdr Brkway .100 40pos RT/A
1
U1
TC1047A Precision Temperature To Voltage
Converter
Note 1:
Manufacturer
Panasonic®
Part Number
-ECG
ECJ-2VB1E104K
®
AMP /Tyco
Electronics
4-103765-0
Microchip
Technology Inc.
TC1047AVNB
®
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.
© 2006 Microchip Technology Inc.
DS51483B-page 17
WORLDWIDE SALES AND SERVICE
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EUROPE
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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
Singapore
Tel: 65-6334-8870
Fax: 65-6334-8850
Taiwan - Hsin Chu
Tel: 886-3-572-9526
Fax: 886-3-572-6459
Taiwan - Kaohsiung
Tel: 886-7-536-4818
Fax: 886-7-536-4803
Taiwan - Taipei
Tel: 886-2-2500-6610
Fax: 886-2-2508-0102
Thailand - Bangkok
Tel: 66-2-694-1351
Fax: 66-2-694-1350
San Jose
Mountain View, CA
Tel: 650-215-1444
Fax: 650-961-0286
Toronto
Mississauga, Ontario,
Canada
Tel: 905-673-0699
Fax: 905-673-6509
DS51483B-page 18
06/08/06
© 2006 Microchip Technology Inc.