Microchip Technology PICDEM™ PIC18 Explorer Demonstration Board User’s Guide

PICDEM™ PIC18 Explorer

Demonstration Board

User’s Guide

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 t he lik e is provided only for your convenience and may be su perseded by upda t es . It is y our 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 supp ort and/or safety ap plications is entir ely at the buyer’s risk, and the buyer agrees to defend, indemnify and hold harmless M icrochip from any and all dama ges, claims, suits, or expenses re sulting from such use. No licens es are conveyed, implicitly or otherwise, under any Microchip intellectual property rights.

Trademarks

The Microchip name and logo, the Microchip logo, Accuron, dsPIC, K

EELOQ, KEELOQ logo, MPLAB, PIC, PICmicro,

PICSTART, PRO MA TE, rfPIC and SmartShunt are registered trademarks of Microchip Technology Incorporated in the U.S.A. and other countries.

FilterLab, Linear Active Thermistor, 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, CodeGuard, dsPICDEM, dsPICDEM.net, dsPICworks, dsSPEAK, ECAN, ECONOMONITOR, FanSense, In-Circuit Serial Programmin g , IC SP, ICEPIC, Mindi, MiW i , MPASM, MPLAB Certified logo, MPLIB, MPLINK, mTouch, PICkit, PICDEM, PICDEM.net, PICtail, PIC

logo, PowerCal, PowerInfo, PowerMate, PowerT ool, REAL ICE, rfLAB, Select Mode, 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 design centers in California and India. The Company’s quality system processes and procedures are for its PIC 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.

MCUs and dsPIC® DSCs, KEELOQ

code hopping

PICDEM™ PIC18 EXPLORER

DEMONSTRATION BOARD

USER’S GUIDE

Table of Contents

Preface ...........................................................................................................................1

Chapter 1. Introduction

1.1 Introduction .....................................................................................................5

1.2 Developm e nt Ki t C o n te n ts ......... ........................................ .. .. ......................... 5

1.3 PICDEM™ P IC1 8 E xp l orer Demonstr a tio n B o ard ..... ........................... .. .. ..... 6

1.4 Sample Devices .... ... .. .................................................................................... 7

1.5 Sample Pro g ram s ................................................. .......................................... 7

Chapter 2. Getting Started

2.1 Board as Stand-Alone Device ...................... ...................... .. ...................... ....9

2.2 Board with In-Circuit Debugger ....................................................................11

2.3 Board with PIM Attached Devices ................................................................12

2.4 Programming the Microcontrollers ............................................................... 16

2.5 Connecting to Host PC for RS-232 Communication ....................................19

Chapter 3. PICDEM™ PIC18 Explorer Demonstration Board Tutorial Program

3.1 Tutorial Pr o g ra m O p e ra tion ... .. ..................................................... .. .. ............ 23

3.2 Source Code and Data Sheets .............................. .......................... .. ...........25

Appendix A. Hardware Details

A.1 Hardware E le ments . .. .......................... .. ... ................................................... 27

A.2 Board Layo u t an d S c h e ma tic s ..................................................................... 30

Worldwide Sales and Service ....................................................................................34

PICDEM™ PIC18 Explorer Demonstration Board User’s Guide

NOTES:

PICDEM™ PIC18 EXPLORER

DEMONSTRATION 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 p age 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 Select the Help menu, and then Topics to open a list of available on-line help files.

IDE on-line help.

INTRODUCTION

This chapter contains general information that will be useful to know before using the PICDEM™ PIC18 Explorer Demonstration 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 PIC18 Explorer Demonstration Board as a development tool to emulate and debug firmware on a target board. The manual layout is as follows:

• Chapter 1. “Introduction” – Overview of the development board and kit

• Chapter 2. “Getting Started” – Description of the different ways to use the board

• Chapter 3. “PICDEM™ PIC18 Explorer Demonstration Board Tutorial Program” – Explanation of t he tu to ri al prep r ogra mme d o n the sa mpl e d evice s

• Appendix A. “Hardware Details” – Description of the board’s hardware elements, including layout and schematic drawings

PICDEM™ PIC18 Explorer Demonstration Board User’s Guide

CONVENTIONS USED IN THIS GUIDE

This manual uses the following docum entat io n conven tion s:

DOCUMENTATION CONVENTIONS

Description Represents Examples

Arial font:

Italic chara c ters Referenced books MPLAB

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 brac kets < > 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 r epeated text var_name [,

A menu path File>Save

A tab Click the Power tab A button on board Press RB0.

where N is the tota l number of digits, R is th e radi x 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 mut ually exclus ive 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)

{ ... }

IDE User’s Guide

WARRANTY REGISTRATION

Please complete the enclosed Warranty Registration Card and mail it promptly. Sending in the Warranty Registration Card entitles users to receive new product updates. Interim software releases are available at the Microchip web site.

Chapter 1. Introduction

1.1 INTRODUCTION

The PICDEM™ PIC18 Explorer Demonstration Board is the latest demonstration board for evaluating Microchip Technology’s PIC18FXXXX and PIC18FXXJXX families of devices.

The board can be used as a stand-alone device or with an in-circuit debugger, such as the MPLAB

Sample programs are provided to demonstrate the unique features of the supported devices. Free software development tools are available for application development and debugging.

1.2 DEVELOPMENT KI T CON TEN TS

The PICDEM PIC18 Explorer Demonstration Board Kit comes with the following:

• PICDEM™ PIC18 Explorer Demonstration Board (Figure 1-1)

• Board-mounted PIC18F8722 and an alternate PIC18F87J11 mounted on a Plug-In Module (PIM)

• CD-ROM that contains:

- Sample programs, source code and Hex files

- “PICDEM™ PIC18 Explorer Demonstration Board User’s Guide”

- Other referenced documents

If you are missing any part of the kit, contact your nearest Microchip sales office listed in the back of this publication.

The MPLAB software tool set for application development and debugging. Compilers and other board-compatible software and hardware tools can be purchased.

To download the MPLAB IDE software and documentation, or get information on the other tools, visit http://microchip.com

ICD 2, and host PC.

Integrated Development Environment (IDE) is a free, integrated

PICDEM™ PIC18 EXPLORER

DEMONSTRATION BOARD

USER’S GUIDE

PICDEM™ PIC18 Explorer Demonstration Board User’s Guide

1.3 PICDEM™ PIC18 EXPLORER DEMONSTRATION BOARD

The PICDEM PIC18 Explorer Demonstration Board has the following hardware features with each feature’s number corresponding to the number in Figure 1-1 that shows the feature’s location on the board:

1. PIC18F8722 microcontroller – The sample, primary microcontroller mounted on the board.

2. Male header pins for connecting Plug-In Modules (PIMs). A PIM enables an alternate PIC18 device to be connected to the board, as the primary microcontroller.

3. In-Circuit Debugger (ICD) connector.

4. Six-pin, PICkit™ 2 connector.

5. 10 kΩ potentiometer for analog inputs.

6. Push button switch – For external Reset.

7. USB connector – For RS-232 communication.

8. PIC18LF2450 microcontroller – For converting RS-232 communication to USB protocol for attachment of a host PC.

9. 12 MHz crystal – For the PIC18LF2450 microcontroller.

10. RS-232 DB9 socket and associated hardware – For direct connection to an RS-232 int erface.

11. Jumper J13 for routing RS-232 communication through either the USB port or the RS-232 socket.

12. Jumper J4 – For selecting between programming the main PIC PIC18LF2450, used for USB to RS-232 communication.

13. Switch S4 – For designating the main microcontroller as either the board-mounted PIC18F8722 or a PIM-mounted microcontroller.

14. LED – For power-on indication.

15. JP1 – For disconnecting the eight display LEDs.

16. Eight LEDs.

17. 32.768 kHz crystal – For Timer1 clock operation.

18. Two push button switches – For external stimulus.

19. Analog temperature sensor, MPC9701A.

20. 25LC256 SPI EEPROM.

21. JP2 – To enable/disable EEPROM.

22. JP3 – To enable/disable LCD.

23. 10 MHz crystal – For the main microcontroller.

24. PICtail™ daughter board connector socket.

25. SPI I/O expander – For LCD display, MCP23S17.

26. Prototype area – For user hardware.

27. LCD display.

28. J2 three-pin, male header – For selecting between a voltage of 3.3V or 5V.

29. J14 four-pin, male header – For use with a PIM, if required, to connect 3.3V or 5V, V

IN and ICE MCLR.

device or the

FIGURE 1-1: PICDEM™ PIC18 EXPLORER DEMONSTRATION BOARD

8 9

14 15

Introduction

1.4 SAMPLE DEVICES

The PICDEM PIC18 Explorer Demonstration Board comes with two sample devices that alternately can be used as the main microcontroller:

• An 18-pin, 5V PIC microcontroller (the PIC18F8722) mounted on the board

• A 3.3V PIC18 device (PIC18F87J11) mounted on an 80-pin PIM that connects to

the demo board via an 80-pin male

1.5 SAMPLE PROGRAMS

The PICDEM PIC18 Explorer Demonstration Board Kit includes a CD-ROM with sample demonstration programs. These programs may be used with the included sample devices and with an In-Circuit Debugger (ICD).

Also provided on the disc is demonstration source code that includes several assembly source code (ASM) files and one Hex compiled code file.

PICDEM™ PIC18 Explorer Demonstration Board User’s Guide

NOTES:

+ 26 hidden pages

Microchip Technology PICDEM™ PIC18 Explorer Demonstration Board User’s Guide

Specifications and Main Features

Frequently Asked Questions

User Manual

Chapter 1. Introduction

1.1 INTRODUCTION

1.2 DEVELOPMENT KI T CON TEN TS

1.3 PICDEM™ PIC18 EXPLORER DEMONSTRATION BOARD

FIGURE 1-1: PICDEM™ PIC18 EXPLORER DEMONSTRATION BOARD

1.4 SAMPLE DEVICES

1.5 SAMPLE PROGRAMS