PICDEM SYSTEM MANAGEMENT
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and may be superseded by updates.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
EE
L
OQ
, K
EE
L
OQ
logo, 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, Linear Active Thermistor, Migratable
Memory, MXDEV, MXLAB, PS logo, 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, CodeGuard,
dsPICDEM, dsPICDEM.net, dsPICworks, ECAN,
ECONOMONITOR, FanSense, FlexROM, fuzzyLAB,
In-Circuit Serial Programming, ICSP, ICEPIC, Mindi, MiWi,
MPASM, MPLAB Certified logo, 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.
© 2007, 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 PIC
®
MCUs and dsPIC
®
DSCs, 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.
DS41304B-page ii
©
2007 Microchip Technology Inc.
PICDEM™ SYSTEM MANAGEMENT
USER’S GUIDE
Table of Contents
Preface ........................................................................................................................... 1
Chapter 1. PICDEM™ System Management
1.1 Introduction ..................................................................................................... 7
1.2 Highlights ........................................................................................................ 7
1.3 PICDEM™ System Management Kit Contents .............................................. 7
1.4 PICDEM System Management Layout ........................................................... 8
1.4.1 Board Features ............................................................................................ 8
1.4.2 Board Connections ...................................................................................... 8
1.4.3 Heating Element ........................................................................................ 10
1.4.4 Board Options ........................................................................................... 10
1.5 Quick Start Guide ......................................................................................... 10
1.5.1 Demonstration Program ............................................................................ 10
1.5.2 Real-Time Clock: Address 0xA2 ................................................................ 11
1.5.3 Analog-to-Digital Converter (ADC): Address 0xA4 .................................... 11
1.5.4 Serial EEPROM: Address 0xA8 ................................................................ 12
1.5.5 Thermal Management: Address 0xA6 ....................................................... 12
1.5.6 General I
2
C™ ............................................................................................ 13
Chapter 2. Background
2.1 Introduction ................................................................................................... 15
2.2 Highlights ...................................................................................................... 15
2.3 PICDEM™ System Management and PICkit™ Serial Analyzer .................. 15
2.4 Fan Speed Control ....................................................................................... 15
2.4.1 Two-wire Fan ............................................................................................. 15
2.4.2 Three-wire Fan .......................................................................................... 16
2.4.3 Measuring the Speed of a Two and Three-wire Fan ................................. 16
2.4.4 Four-wire Fan Control ............................................................................... 17
Chapter 3. Troubleshooting
3.1 Introduction ................................................................................................... 19
3.2 Common Problems ....................................................................................... 19
3.2.1 Serial Communications does not appear to be working ............................ 19
3.2.2 Microcontroller does not run after programming using the
MPLAB
®
ICD 2 ...................................................................................... 19
3.2.3 The fan is not providing proper feedback .................................................. 19
3.2.4 Heating element is not heating .................................................................. 19
3.2.5 Temperature is not changing ..................................................................... 19
©
2007 Microchip Technology Inc.
DS41304B-page iii
PICDEM™ SYSTEM MANAGEMENT
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.
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 on-line help files.
INTRODUCTION
This chapter contains general information that will be useful to know before using the
PICDEM
™
System Management Board. Items discussed in this chapter include:
•
•
•
•
•
•
•
•
Document Layout
Conventions Used in this Guide
Warranty Registration
Recommended Reading
The Microchip Web Site
Development Systems Customer Change Notification Service
Customer Support
Document Revision History
DOCUMENT LAYOUT
This document describes how to use the PICDEM
™
System Management Board as a
demonstration and training platform tool. The manual layout is as follows:
•
Chapter 1. “PICDEM™ System Management”
– This chapter provides an over-
view of the PICDEM System Management Board and system integration.
•
Chapter 2. “Background”
– This chapter provides background information on
the System Management application and the PICDEM System Management
Board.
•
Chapter 3. “Troubleshooting”
– This chapter provides resolutions for solving
common problems associated with using the PICDEM System Management
Board.
•
Appendix A. “Hardware Schematics”
– Illustrates the PICDEM System
Management Board hardware schematic diagram.
©
2007 Microchip Technology Inc.
DS41304B-page 1
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