MICROCHIP 28-PIN DEMO BOARD Technical data

28-PIN DEMO BOARD

USER’S GUIDE

© 2006 Microchip Technology Inc. DS41301A

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 Digit al Millennium Copyright Act. If suc h a c t s
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
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OTHERWISE, RELATED TO THE INFORMATION,
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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, CodeGuard,
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, SmartT el, Total
Endurance, UNI/O, WiperLock and ZENA are trademarks of
Microchip Technology I ncorporat ed 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.

© 2006, Microchip Technology Incorporated, Pr inted 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
8-bit MCUs, KEELOQ
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.

®

code hopping devices, Serial EEPROMs,

DS41301A-page ii © 2006 Microchip Technology Inc.

®

28-PIN DEMO BOARD

USER’S GUIDE

Table of Contents

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

Introduction............................................................................................................1

Document Layout .................................................................................................. 1

Conventions Used in this Guide............................................................................ 2

Warranty Reg is tration............................................................................................ 3

Recommended Reading............................... .. ................................................. .. .. ..3

The Microchip Web Site....................... ...................... ...................... .....................4

Development Systems Customer Change Notification Servi ce............................4

Customer Support...................................... ................................... .................. ......5

Document Revision History................................................................................... 5

Chapter 1. 28-Pin Demo Board Overview

1.1 Introduction .....................................................................................................7

1.2 Highlight s ......... ............. .. .. ........................... .. .. ........................... .. .. ................ 7

1.3 28-Pin Demo Board Supported Devices ........................................................7

1.4 28-Pin De m o Boa r d O v e rview ... .. ........................... .. ...................................... 8

1.5 Running th e D e fa u l t De mo n stration ....... ........................... .. ........................... 8

Appendix A. Hardware Schematics

A.1 Introduction ....................................................................................................9

Worldwide Sales and Service ....................................................................................12

© 2006 Microchip Technology Inc. DS41301A-page iii

28-Pin Demo Board User’s Guide

NOTES:

DS41301A-page iv © 2006 Microchip Technology Inc.

28-PIN 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.

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
28-Pin Demo 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 28-Pin Demo Board as a development tool to
emulate and debug firmware on a target board. The manual layout is as follows:

• Section Chapter 1. “28-Pin Demo Board Overview” – This chapter provides an
overview of the 28-pin Demo Board for Microchip’s 28-pin PIC
Units (MCU).

• Appendix A. “Hardware Schematics” – Illustrates the 28-Pin Demo Board
hardware schematic diagram, PCB layout and Bill of Materials.

®

Microcontroller

© 2006 Microchip Technology Inc. DS41301A-page 1

28-Pin Demo 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 characters Referenced books “MPLAB

Emphasized text ...is the only comp ile r...

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 Sam ple 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

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 mutually exclusive
arguments; an OR selection

Represents code supplied by
user

®

IDE User’s Guide”

“Save project before build”

4‘b0010, 2‘hF1

any valid filename

[options]
errorlevel {0|1}

var_name...]
void main (void)

{ ...
}

DS41301A-page 2 © 2006 Microchip Technology Inc.

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.

RECOMMENDED READING

This user's guide describes how to use 28-Pin Demo Board. Other useful documents
are listed below. The following Microchip documents are available and recommended
as supplemental reference resources.

PIC16F883/884/886/887 (DS 41 291)

Consult this document for information regarding the PIC16F883/884/886/887
28/40/44-Pin Enhanced Flash-Based, 8-Bit CMOS Microcontroller with nanoWatt
Technology.

PICkit™ 2 Microcontroller Programmer User’s Guide (DS51553)

Consult this document for instructions on how to use the PICkit 2 Microcontroller
Programmer software and hardware.

MPLAB

Consult this document for more information pertaining to the features and functions of
the MPLAB In-Circuit Debugger (ICD) software.

MPLAB

Consult this document for more information pertaining to the installation and features
of the MPLAB Integrated Development Environment (IDE) software.

Readme Files

For the latest information on using other tools, read the tool-specific Readme files in
the Readmes subdirectory of the MPLAB IDE installation directory. The Readme files
contain update information and known issues that may not be included in this user’s
guide.

®

ICD User’s Guide (DS51184)

®

IDE Simulator, Editor User’s Guide (DS51025)

Preface

© 2006 Microchip Technology Inc. DS41301A-page 3

28-Pin Demo Board User’s Guide

THE MICROCH IP WEB SITE

Microchip provides online support via our web site at www.microchip.com. This web
site is used as a means to make files and information easily available to customers.
Accessible by using your favorite Internet browser, the web site contains the following
information:

• Product Support – Data sheets and errata, application notes and sample
programs, design resources, user’s guides and hardware support documents,
latest software releases and archived software

• General Technical Support – Frequently Asked Questions (FAQs), technical
support requests, online discussion groups, Microchip consultant program
member listin g

• Business of Microchip – Product selector and ordering guides, latest Microchip
press releases, listing of seminars and events, listings of Microchip sales offices,
distributors and factory representatives

DEVELOPMENT SYSTEMS CUSTOMER CHANGE NOTIFICATION SERVICE

Microchip’s customer notification service helps keep customers current on Microchip
products. Subscribers will receive e-mail notification whenever there are changes,
updates, revisions or errata related to a specified product family or development tool of
interest.

To register, access the Microchip web site at www.microchip.com, click on Customer
Change Notification and follow the registration instructions.

The Development Systems product group categories are:

• Compilers – The latest information on Microchip C compilers and other language
tools. These include the MPLAB C18 and MPLAB C30 C compilers; MPASM™
and MPLAB ASM30 assemblers; MPLINK™ and MPLAB LINK30 object linkers;
and MPLIB™ and MPLAB LIB30 object librarians.

• Emulators – The latest information on Microchip in-circuit emulators.This
includes the MPLAB ICE 2000 and MPLAB ICE 4000.

• In-Circuit Debuggers – The latest information on the Microchip in-circuit
debugger, MPLAB ICD 2.

• MPLAB
Integrated Development Environment for development systems tools. This list is
focused on the MPLAB IDE, MPLAB SIM simulator, MPLAB IDE Project Manager
and general editing and debugging features.

• Programmers – The latest information on Microchip programmers. These include
the MPLAB PM3 and PRO MATE
Plus and PICkit

®

IDE – The latest information on Microchip MPLAB IDE, the Windows®

®

™

1 development programmers.

II device programmers and the PICSTART®

DS41301A-page 4 © 2006 Microchip Technology Inc.

CUSTOMER SUPPORT

Users of Microchip products can receive assistance through several channels:

• Distributor or Representative

• Local Sales Office

• Field Application Engineer (FAE)

• Technical Support
Customers should contact their distributor, representative or field application engineer

(FAE) for support. Local sales offices are also available to help customers. A listing of
sales offices and locations is included in the back of this document.

Technical support is available through the web site at: http://support.microchip.com

DOCUMENT REVISION HISTORY

Revision A (October 2006)

• Initial Release of this Document.

Preface

© 2006 Microchip Technology Inc. DS41301A-page 5

28-Pin Demo Board User’s Guide

NOTES:

DS41301A-page 6 © 2006 Microchip Technology Inc.

Chapter 1. 28-Pin Demo Board Overview

1.1 INTRODUCTION

28-PIN DEMO BOARD

USER’S GUIDE

The 28-Pin Demo Board is a small and simple demonstration PCB for Microchip’s
28-pin Dual Inline Package (DIP) PIC
a PIC16F886 MCU, four LEDs, push button and potentiometer. The demo board has
several test points to access the I/O pins of the MCU and a generous prototyping area.
The MCU can be programmed with the PICkit™ 2 Microcontroller Programmer or the
MPLAB

®

ICD 2 using the RJ-11 to 6-pin inline adapter (AC164110).

®

Microcontroller Units (MCU). It is populated with

1.2 HIGHLIGHTS

This chapter discusses:

• 28-Pin Demo Board Supported Devices

• The 28-Pin Demo Board Overview

• Running the Default Demonstration

1.3 28-PIN DEMO BOARD SUPPORTED DEVICES

The 28-Pin Demo Board can be used with virtually any 28-pin Dual Inline Package
(DIP) PIC MCU. The assembled 28-Pin Demo Board is populated with a
PIC16F886-I/P microcontroller.

Additional 28-Pin Demo Boards can be ordered from Microchip Technology and distrib­utors. Part number, DM164120-3, comes with one assembled and two blank 28-Pin
Demo Boards. The blank demo board can be used for evaluating or prototyping circuits
using any of the 28-pin devices listed below.

PIC16F57 PIC16CR63 PIC18F2510
PIC16F72 PIC16CR72 PIC18F2520

PIC16F73 PIC16CR73 PIC18F2515
PIC16F737 PIC16CR76 PIC18F2523
PIC16F767 PIC18F2220 PIC18F2525
PIC16F870 PIC18F2221 PIC18F2550
PIC16F872 PIC18F2320 PIC18F2580

PIC16F873A PIC18F2321 PIC18F2585
PIC16F876A PIC18F2331 PIC18F2610

PIC16F913 PIC18F2410 PIC18F2620
PIC16F916 PIC18F2420 PIC18F2680
PIC16C55A PIC18F2423 PIC18F2682
PIC16C62B PIC18F2431 PIC18F2685
PIC16C63A PIC18F2450 PIC18F24J10
PIC16C745 PIC18F2455 PIC18F25J10
PIC16C773 PIC18F2480

© 2006 Microchip Technology Inc. DS41301A-page 7

28-Pin Demo Board User’s Guide

1.4 28-PIN DEMO BOARD OVERVIEW

The 28-Pin Demo Board is populated with a PIC16F886 MCU (U1), four LEDs
(DS1-DS4), push button (SW1), 32 KHz crystal (X2) and potentiometer (RP1). The
board layout is shown in Figure 1-1. The demo board has several test points to access
the I/O pins of the MCU and a generous prototyping area. The MCU can be
programmed with the PICkit™ 2 Microcontroller Programmer from header P1.

FIGURE 1-1: 28-PIN DEMO BOARD

PICkit™ 2

Programming Header

Aux Power
Connector

Crystal

Mounting Pads

32 KHz Crystal

Push Button

SW1

LEDs DS1-DS4

1.5 RUNNING THE DEFAULT DEMONSTRATION

The assembled 28-Pin Demo Board comes preprogrammed with a demonstration
program. To use this program, power the demo board (3.0-5.5 V
Microcontroller Programmer , or a bench power supply connected to header P2. To use
the PICkit™ 2 Microcontroller Programmer , connect it to a PC USB port using the USB
cable. St art the PICkit™ 2 Microcontroller Progr ammer PC app lication and click on the
target power box to apply power to the demo bo ard. The demo board will blink the LEDs
in the Reset pattern. The Reset pattern consists of three different LED blink patterns.
First, the LEDs will “ping pong” (LED1, 2, 3 and 4, then LED 4, 3, 2 and 1). Second, the
LEDs will blink on and off in unison. Third, the LEDs will perform the ADC display where
values 0x0A, 0x0D and 0x0C display in sequence followed by the Most Significant 4
bits of the ADC result measuring channel 1, which is the on-board potentiometer.

PICkit™

Serial Analyzer

Header

Generous

Prototyping

Area

Potentiometer

RP1

DC) using a PICkit™ 2

DS41301A-page 8 © 2006 Microchip Technology Inc.

Appendix A. Hardware Schematics

A.1 INTRODUCTION

This appendix contains the 28-Pin Demo Board schematic, PCB layout and Bill of
Materials.

FIGURE A-1: SCHEMATIC DIAGRAM

28-PIN DEMO BOARD

USER’S GUIDE

© 2006 Microchip Technology Inc. DS41301A-page 9

28-Pin Demo Board User’s Guide

FIGURE A-2: SILKSCREEN

FIGURE A-3: TOP COPPER

DS41301A-page 10 © 2006 Microchip Technology Inc.

FIGURE A-4: BOTTOM COPPER

Hardware Schematics

TABLE A-1: BILL OF MATERIALS

Bill of Materials

Designation Qty Description

C1, C2 2 Capacitor, Ceramic, 0.1 μF, 5%, X7R
C6, C7 2 Capacitor, Ceramic, 122 pF, 50V, C0G
R3-R6 4 Resistor, 470Ω, 5%, 1/8W
R2, R7 2 Resistor, 1 kΩ, 5%, 1/8W
R1 1 Resistor, 10 kΩ, 5%, 1/8W
R8 1 Resistor 200 kΩ, 5%, 1/8W
RP1 1 Potentiometer 10 kΩ, thumbwheel
DS1-DS4 4 LED, Red T1-3/4
SW1 1 Switch, push button, momentary

®

U1 – Microcontroller 1 28-pin PIC
P1, P3 2 Connector, header, right-angle, 6-pin, 0.100” spacing, 0.025”
JP1 1 Connector, header, 2-pin, 0.100” spacing, 0.025” square
Rubber Feet 4 Bumpon square, 0.40 x 0.10, black
X2 1 Crystal, tuning fork, cylinder, 12.5 pF
J1 1 Connector, receptacle 1x14-pin

MCU

© 2006 Microchip Technology Inc. DS41301A-page 11

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10/19/06

DS41301A-page 12 © 2006 Microchip Technology Inc.