Humidity Sensor
PICtail™ Demo Board
User’s Guide
©
2005 Microchip Technology Inc.
DS51594A
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and may be superseded by updates.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 WAR-
RANTIES 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’s products as critical components in
life support systems is not authorized except with express
written approval by Microchip. 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
EE
L
OQ
, 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,
PICMASTER, 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,
MPASM, MPLIB, MPLINK, MPSIM, 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.
© 2005, Microchip Technology Incorporated, Printed in the
U.S.A., All Rights Reserved.
Printed on recycled paper.
Microchip received ISO/TS-16949:2002 quality system certification for
its worldwide headquarters, design and wafer fabrication facilities in
Chandler and Tempe, Arizona and Mountain View, California in
October 2003. The Company’s quality system processes and
procedures are for its PICmicro
®
8-bit MCUs, K
EE
L
OQ
®
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.
DS51594A-page ii
©
2005 Microchip Technology Inc.
HUMIDITY SENSOR PICTAIL™
DEMO 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 ........................................................................................ 4
Customer Support ................................................................................................. 4
Document Revision History ................................................................................... 4
Chapter 1. Product Overview
1.1 Introduction ..................................................................................................... 5
1.2 Kit Contents .................................................................................................... 5
1.3 Humidity Sensor PICtail™ Demo Board ......................................................... 5
1.4 Associated Tools ............................................................................................ 7
1.5 Assembly Code Modules ................................................................................ 8
Chapter 2. Setup and Installation
2.1 Introduction ..................................................................................................... 9
2.2 Required Tools ............................................................................................... 9
2.3 Setting up the Humidity Sensor PICtail™ Demo Board ................................. 9
2.4 Connecting to Alternate Tools ...................................................................... 11
Chapter 3. Operation
3.1 Introduction ................................................................................................... 13
3.2 Configuring the Humidity Sensor PICtail™ Demo Board ............................. 13
3.3 Using the Humidity Sensor PC Program ...................................................... 13
3.4 Humidity Sensor Calibration ......................................................................... 15
Chapter 4. Modified Circuit
4.1 Introduction ................................................................................................... 17
4.2 The “Reduced Current” Circuit ..................................................................... 17
©
2005 Microchip Technology Inc.
DS51594A-page iii
Humidity Sensor PICtail™ Demo Board User’s Guide
Appendix A. Schematic and Layouts
A.1 Introduction .................................................................................................. 19
A.2 Highlights ..................................................................................................... 19
A.3 Demonstration Board Description ................................................................ 19
A.4 The “Reduced Current” Modification ............................................................ 20
A.5 Additional Comments ................................................................................... 20
Appendix B. Bill Of Materials (BOM)
B.1 Humidity Sensor PICtail™ Demo Board BOM ............................................. 25
B.2 BOM for Humidity Sensor and Other Capacitors in Box .............................. 26
B.3 BOM for “Reduced Current” Modifications ................................................... 26
Worldwide Sales and Service .....................................................................................28
DS51594A-page iv
©
2005 Microchip Technology Inc.
HUMIDITY SENSOR 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
Humidity Sensor 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 Humidity Sensor PICtail™ Demo Board as a
development tool to emulate and debug firmware on a target board. The manual layout
is as follows:
•
Chapter 1. “Product Overview”
– This is an introduction to the Humidity Sensor
PICtail™ Demo Board. It covers the kit contents, associated tools and how they
work together.
•
Chapter 2. “Setup and Installation”
– Covers the initial set-up of the Humidity
Sensor PICtail™ Demo Board. It lists the required tools, shows how to connect
this board and demonstates how to verify the set-up.
•
Chapter 3. “Operation”
– This chapter discusses using the humidity sensor on
the PCB and using the software PC Application.
• Chapter 4. “Modified Circuit”
– Gives the modifications necessary to increase
measurement resolution by a factor of 100 (see AN1016 for details)
•
Appendix A. “Schematic and Layouts”
– Gives detailed information on the
Humidity Sensor PICtail™ Demo Board. Includes detailed circuit explanation,
schematic and board layouts.
•
Appendix B. “Bill Of Materials (BOM)”
– Gives detailed information on the
Humidity Sensor PICtail™ Demo Board’s firmware.
©
2005 Microchip Technology Inc.
DS51594A-page 1
