Microchip Technology TC1047A User Manual

Download

Page 1

TC1047A Temperature-to-Voltage

Converter PICtail™ Demo Board

User’s Guide

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in this publication regarding device applications and the like is provided only for your convenience and may be superseded by updates.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.

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

Page 3

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

Page 4

TC1047A Temperature-to-Voltage Converter PICtail™ Demo Board User’s Guide

NOTES:

Page 5

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.

Page 6

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) { ... }

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)

Page 10

TC1047A Temperature-to-Voltage Converter PICtail™ Demo Board User’s Guide

NOTES:

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

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

GND

Microcontroller” (DS00938), for

TC1047A

Temp erat ure

Sensor

OUT

+5V

TC1047A PICtail™

Demo Board

D4D5D6D7

D0D1D2D3

FIGURE 2-1: TC1047A Temperature-to-Voltage Converter PICtail™ Demo Board Block Diagram.

Page 12

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

TC1047A PICtail™ Demo Board

(SOT23-3)

OUT

0.1 µF

GND

FIGURE 2-3: Simplified TC1047A PICtail™ Daughter Board Schematic.

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.

Page 14

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.

Page 15

Installation and Operation

TC1047A Temp Converter

Demo Board

Temperature

Displayed in

BCD

D7 D6 D5 D4

D3 D2 D1 D0

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.

Page 16

TC1047A Temperature-to-Voltage Converter PICtail™ Demo Board User’s Guide

NOTES:

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

Page 18

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

Page 19

A.4 BOARD - SILK SCREEN LAYER

Schematic and Layouts

A.5 BOARD - BOTTOM LAYER

Page 20

TC1047A Temperature-to-Voltage Converter PICtail™ Demo Board User’s Guide

NOTES:

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

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

Asia Pacific Office

Suites 3707-14, 37th Floor Tower 6, The Gateway Habour City, Kowloon Hong Kong Tel: 852-2401-1200 Fax: 852-2401-3431

Atlanta

Alpharetta, GA Tel: 770-640-0034 Fax: 770-640-0307

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

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

ASIA/PACIFIC

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: 86-28-8676-6200 Fax: 86-28-8676-6599

China - Fuzhou

Tel: 86-591-8750-3506 Fax: 86-591-8750-3521

China - Hong Kong SAR

Tel: 852-2401-1200 Fax: 852-2401-3431

China - Qingdao

Tel: 86-532-8502-7355 Fax: 86-532-8502-7205

China - Shanghai

Tel: 86-21-5407-5533 Fax: 86-21-5407-5066

China - Shenyang

Tel: 86-24-2334-2829 Fax: 86-24-2334-2393

China - Shenzhen

Tel: 86-755-8203-2660 Fax: 86-755-8203-1760

China - Shunde

Tel: 86-757-2839-5507 Fax: 86-757-2839-5571

China - Wuhan

Tel: 86-27-5980-5300 Fax: 86-27-5980-5118

China - Xian

Tel: 86-29-8833-7250 Fax: 86-29-8833-7256

ASIA/PACIFIC

India - Bangalore

Tel: 91-80-4182-8400 Fax: 91-80-4182-8422

India - New Delhi

Tel: 91-11-5160-8631 Fax: 91-11-5160-8632

India - Pune

Tel: 91-20-2566-1512 Fax: 91-20-2566-1513

Japan - Yokohama

Tel: 81-45-471- 6166 Fax: 81-45-471-6122

Korea - Gumi

Tel: 82-54-473-4301 Fax: 82-54-473-4302

Korea - Seoul

Tel: 82-2-554-7200 Fax: 82-2-558-5932 or 82-2-558-5934

Malaysia - Penang

Tel: 60-4-646-8870 Fax: 60-4-646-5086

Philippines - Manila

Tel: 63-2-634-9065 Fax: 63-2-634-9069

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

EUROPE

Austria - Wels

Tel: 43-7242-2244-3910 Fax: 43-7242-2244-393

Denmark - Copenhagen

Tel: 45-4450-2828 Fax: 45-4485-2829

France - Paris

Tel: 33-1-69-53-63-20 Fax: 33-1-69-30-90-79

Germany - Munich

Tel: 49-89-627-144-0 Fax: 49-89-627-144-44

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

06/08/06