PICDEM™ Lab Development Board User's Guide

1 picdem Lab Development Board User's Guide 2009 Microchip Technology Inc. DS41369A. 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.

2 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.

3 Information contained in this publication regarding device Trademarks applications and the like is provided only for your convenience The Microchip name and logo, the Microchip logo, Accuron, and may be superseded by updates. It is your responsibility to dsPIC, KEELOQ, KEELOQ logo, MPLAB, PIC, PICmicro, ensure that your application meets with your specifications. PICSTART, rfPIC, SmartShunt and UNI/O are registered MICROCHIP MAKES NO REPRESENTATIONS OR. trademarks of Microchip Technology Incorporated in the WARRANTIES OF ANY KIND WHETHER EXPRESS OR. and other countries. IMPLIED, WRITTEN OR ORAL, STATUTORY OR. OTHERWISE, RELATED TO THE INFORMATION, FilterLab, Linear Active Thermistor, MXDEV, MXLAB, INCLUDING BUT NOT LIMITED TO ITS CONDITION, SEEVAL, SmartSensor and The Embedded Control Solutions QUALITY, PERFORMANCE, MERCHANTABILITY OR Company are registered trademarks of Microchip Technology FITNESS FOR PURPOSE.

4 Microchip disclaims all liability Incorporated in the arising from this information and its use. Use of Microchip Analog-for-the-Digital Age, Application Maestro, CodeGuard, devices in life support and/or safety applications is entirely at dsPICDEM, , dsPICworks, dsSPEAK, ECAN, the buyer's risk, and the buyer agrees to defend, indemnify and ECONOMONITOR, FanSense, In-Circuit Serial hold harmless Microchip from any and all damages, claims, Programming, ICSP, ICEPIC, Mindi, MiWi, MPASM, MPLAB. suits, or expenses resulting from such use. No licenses are Certified logo, MPLIB, MPLINK, mTouch, PICkit, picdem , conveyed, implicitly or otherwise, under any Microchip , PICtail, PIC32 logo, PowerCal, PowerInfo, intellectual property rights.

5 PowerMate, PowerTool, REAL ICE, rfLAB, Select Mode, Total Endurance, WiperLock and ZENA are trademarks of Microchip Technology Incorporated in the and other countries. SQTP is a service mark of Microchip Technology Incorporated in the All other trademarks mentioned herein are property of their respective companies. 2009, Microchip Technology Incorporated, Printed in the , 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 design centers in California and India.

6 The Company's quality system processes and procedures are for its PIC MCUs and dsPIC DSCs, KEELOQ 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. DS41369A-page ii 2009 Microchip Technology Inc. picdem LAB Development . Board User's Guide . Table of Contents Chapter 1. Overview Introduction .. 5. Highlights .. 5. picdem Lab Development Kit Contents .. 5. picdem Lab Development Board Construction and Layout .. 6. Target Power .. 7. Connecting the PICkit 2 Programmer/Debugger.

7 8. Solderless Prototyping Area Strip Configuration .. 9. Chapter 2. Getting Started Introduction .. 11. Prerequisites .. 11. The Software Control Loop .. 11. MPLAB IDE Download Instructions .. 12. Installing the Included Lab Files .. 16. Chapter 3. General Purpose Input/Output Labs Introduction .. 17. General Purpose Input/Output Labs .. 17. GPIO Output Labs .. 18. Reference Documentation .. 18. Equipment Required for GPIO Output Labs .. 18. picdem Lab Development Board Setup for GPIO Output Labs .. 18. Lab 1: Light LEDs .. 19. Lab 2: Flash LEDs (Delay Loop) .. 25. Lab 3: Simple Delays Using Timer0 .. 29. Lab 4: Rotate LEDs .. 34.

8 GPIO Input Labs .. 38. Reference Documentation .. 38. Equipment Required for GPIO Input Labs .. 38. picdem Lab Development Board Setup for GPIO Input Labs .. 38. Lab 5: Adding a Push Button .. 39. Lab 6: Push Button Interrupt .. 48. Lab 7: Push Button Interrupt-on-Change .. 53. Lab 8: Using Weak Pull-Ups .. 58. 2009 Microchip Technology Inc. DS41369A-page iii picdem Lab Development Board User's Guide Chapter 4. Comparator Peripheral Labs Introduction .. 61. Comparator Labs .. 61. Reference Documentation ..61. Comparator Labs ..61. Equipment Required ..61. Lab 1: Simple Compare ..62. Lab 2: Using the Comparator Voltage Reference.

9 64. Lab 3: Higher Resolution Sensor Readings Using a Single Comparator ..68. Chapter 5. Analog-to-Digital Converter Peripheral Labs Introduction .. 75. ADC Labs .. 75. Reference Documentation ..75. Equipment Required ..75. Lab 1: Simple ADC ..76. Lab 2: Audible Temperature Sensor ..85. Appendix A. Schematic picdem Lab Development Kit Schematic .. 91. DS41369A-page iv 2009 Microchip Technology Inc. PICDEMTM LAB Development . 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.

10 Please refer to our web site ( ) 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 TMLab Development Board .