MICROCHIP PICDEM LCD 2 User Guide

PICDEM™ LCD 2

Demonstration Kit

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in this publication regarding device applications and the like is provided only for your convenience and may be superseded by updates.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

EELOQ, KEELOQ 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.

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, KEEL 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.

code hopping devices, Serial

PICDEM™ LCD 2 DEMONSTRATION

KIT USER’S GUIDE

Table of Contents

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

Chapter 1. Introduction

1.1 Welcome ........................................................................................................ 5

1.2 PICDEM LCD 2 Demonstration Board Hardware Features ........................... 6

1.3 Sample Devices ............................................................................................. 7

1.4 Sample Programs ........................................................................................... 7

Chapter 2. Getting Started

2.1 PICDEM LCD 2 as a Stand-Alone Board – Preprogrammed Device ............. 9

2.2 PICDEM LCD 2 Used with an In-Circuit Emulator or In-Circuit Debugger .... 10

Chapter 3. Using the Demo Software

3.1 Demo Firmware Operation ........................................................................... 11

Appendix A. Board Technical Information

A.1 Processors ................................................................................................... 19

A.2 LCD Display ................................................................................................. 20

A.3 LED Display ................................................................................................. 34

A.4 Charge Pump and V

A.5 Resistive Ladder Versus Charge Pump ....................................................... 34

A.6 Oscillator Options ......................................................................................... 35

A.7 RS-232 Serial Port ....................................................................................... 35

A.8 Real-Time Clock .......................................................................................... 35

A.9 Serial EEPROM ........................................................................................... 35

A.10 Analog Input ............................................................................................... 35

A.11 Temperature Sensor .................................................................................. 36

A.12 Switches ..................................................................................................... 36

A.13 ICD Connector ........................................................................................... 36

A.14 Power Supply ............................................................................................. 37

A.15 Board Layout and Schematics ................................................................... 40

A.16 PIM Layout and Schematics ...................................................................... 44

LCAP ............................................................................. 34

Worldwide Sales and Service .................................................................................... 52

PICDEM™ LCD 2 Demonstration Kit User’s Guide

NOTES:

PICDEM™ LCD 2 DEMONSTRATION

KIT 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.

The VL logo is a registered logo of Varitronix Limited. The illustrations on pages 20, 21, 25, 27, 30 and 33 are copyrighted materials of Varitronix and VL Electronics. Reprinted with permission.

IDE on-line help.

INTRODUCTION

This chapter contains general information that will be useful to know before using the PICDEM™ LCD 2 Demonstration Kit User’s Guide. Items discussed in this chapter include:

• About this Guide

• Conventions Used in this Guide

• Recommended Reading

• The Microchip Web Site

• Development Systems Customer Change Notification Service

• Customer Support

ABOUT THIS GUIDE

Document Layout

This document describes how to use the PICDEM LCD 2 as a development tool to emulate and debug firmware on a target board. The manual layout is as follows:

• Chapter 1. Introduction – Describes the hardware of the PICDEM LCD 2 Demonstration Board.

• Chapter 2. Getting Started – Describes how to use the PICDEM LCD 2 Demonstration Board.

• Chapter 3. Using the Demo Software – Describes how to use the application in Demo mode and also how it can be customized.

• Appendix A. Board Technical Information – Shows the schematic and layout diagrams for the PICDEM LCD 2 Demonstration Board.

CONVENTIONS USED IN THIS GUIDE

This manual uses the following documentation conventions:

DOCUMENTATION CONVENTIONS

Description Represents Examples

Arial font:

Italic characters Referenced books

Initial caps A window the Output window

Quotes A field name in a window or

Underlined, italic text with right angle bracket

Bold characters A dialog button Click OK

Text in angle brackets < > A key on the keyboard Press <Enter>, <F1>

Courier font:

Plain Courier New Sample source code #define START

Italic Courier New A variable argument file.o, where file can be

0xnnnn A hexadecimal number where

Square brackets [ ] Optional arguments mcc18 [options] file

Curly brackets and pipe character: { | }

Ellipses... Replaces repeated text var_name [,

Preface

PICDEM LCD 2 User’s Guide

Emphasized text ...is the

A dialog the Settings dialog A menu selection select Enable Programmer

“Save project before build”

dialog A menu path

A tab Click the Power tab

Filenames autoexec.bat

File paths c:\mcc18\h Keywords _asm, _endasm, static

Command-line options -Opa+, -Opa-

Bit values 0, 1 A binary number ‘b00100, ‘b10

n is a hexadecimal digit

Choice of mutually exclusive arguments; an OR selection

Represents code supplied by user

File>Save

any valid filename 0xFFFF, 0x007A

[options]

errorlevel {0|1}

var_name...]

void main (void) {... }

only

compiler...

PICDEM™ LCD 2 Demonstration Kit User’s Guide

THE MICROCHIP 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 listing

• 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

(DS30444)

(DS39544)

IDE installation directory. The Readme files

(DS39770)

(DS39629)

(DS41250)

Preface

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 C17, 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 IDE – The latest information on Microchip MPLAB IDE, the Windows operating system Integrated Development Environment for development systems tools. This list is focused on the MPLAB IDE, MPLAB SIM and MPLAB SIM30 simulators, 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 PICSTART

Plus development programmer.

II device programmers and the

CUSTOMER SUPPORT

Users of Microchip products can receive assistance through several channels:

• Distributor or Representative

• Local Sales Office

• Field Application Engineer (FAE)

• Technical Support

• Development Systems Information Line

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

In addition, there is a Development Systems Information Line which lists the latest versions of Microchip’s development systems software products. This line also provides information on how customers can receive currently available upgrade kits.

The Development Systems Information Line numbers are:

1-800-755-2345 – United States and most of Canada

1-480-792-7302 – Other International Locations

1.1 WELCOME

Thank you for purchasing the PICDEM LCD 2 Demonstration Kit from Microchip Technology Incorporated. The PICDEM LCD 2 demonstrates the capabilities of the PIC18FXXJ90, PIC18FXX90 and PIC16X9XX families of devices.

The PICDEM LCD 2 can be used stand-alone with a preprogrammed part, with an in-circuit emulator (e.g., MPLAB ICD 2). Sample programs are provided to demonstrate the unique features of the supported devices.

The PICDEM LCD 2 Demonstration Kit comes with the following:

1. PICDEM LCD 2 Demonstration Board (Figure 1-1)

2. Sample Plug-in Module (PIM)

3. CD-ROM which contains:

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

PICDEM™ LCD 2 DEMONSTRATION

KIT USER’S GUIDE

Chapter 1. Introduction

ICE) or with an in-circuit debugger (e.g., MPLAB

• Sample Programs

•

“PICDEM™ LCD 2 Demonstration Kit User’s Guide”

1.2 PICDEM LCD 2 DEMONSTRATION BOARD HARDWARE FEATURES

The PICDEM LCD 2 Demonstration Board has the following hardware features; each feature’s number corresponding to the number in Figure 1-1:

1. The demonstration board provides a daughter board option for the

PIC18F85J90, PIC18F8490, PIC16F914/917 and PIC16F946 families of devices and MPLAB ICE. The board is also supplied with a PIM populated with a PIC18F85J90 device.

Note: Optional PIMs populated with PIC18FXX90 and PIC16F9XX devices are

available for purchase from Microchip Direct (www.microchipdirect.com).

The MPLAB ICE can be plugged onto the board without any transition socket for PIC18FXX90 devices. For other devices, a transition socket may be needed.

2. On-board adjustable voltage regulator for direct input from 9V, 100 mA AC/DC

wall adapter or 3V button cell battery.

3. Jumper J15 to select different power options.

4. Green power-on indicator LED for direct input from 9V.

5. Varitronix custom segmented LCD display.

6. Jumpers, COM0, COM1, COM2 and COM3, to disconnect COM pins from

on-board LCD and allow the usage of any customized LCD glass.

7. RS-232 connection and associated hardware for direct connection to RS-232

interface.

8. Jumpers, JP13 and JP14, to disconnect TX and RX.

9. In-Circuit Debugger (ICD) connector.

10. R44, 10 kΩ, potentiometer for devices with analog inputs.

11. Five push button switches (S1 through S5) for external stimulus and Reset.

12. Jumpers, JP19, JP18, JP1 and JP2, to disconnect switches from RB6, RB7, RA6

and RA7 input pins.

13. Jumper, J11, to select either 10 kΩ (POT R44) or the S1-S4 switches to AN0

(RA0).

14. Two green LEDs connected to RC3 and RC4 (device dependent).

15. Jumpers in J14 to disconnect LEDs from RC3 and RC4.

16. A slide switch (S6) to select either the resistor ladder or the charge pump option

for generating the bias values for the LCD pins.

17. Jumper, JP21, to physically tie the resistor ladder to ground.

18. Unpopulated holes provided for crystal connection.

19. Jumpers, JP11 and JP12, to disconnect crystal from OSC1 and OSC2.

20. 32.768 kHz crystal with Timer1 for Real-Time Clock (RTC) operation.

21. A Microwire EEPROM 93AA46C provided on a socket.

22. Jumpers, JP15 and JP16, to disconnect EEPROM from CK and DT. Jumper, J6,

to connect CS to GND or to RC4 (device dependent). Jumper, J13, to select either 128 x 8 or 64 x 16 memory organization.

23. Thermistor for sensing temperature.

24. Jumper, JP5, to connect thermistor to AN1 (RA1) (device dependent).

25. Jumper, JP17, to select either V

26. Unpopulated option for TC77 temperature sensor.

27. Prototype area for user hardware.

28. PICtail™ daughter board connection. (The pin names on the board are valid only

for the PIC18F8490 device. For other devices, the PICtail daughter board pin connections may be different or not connected.)

CC or I/O to power the peripherals.

PICDEM™ LCD 2 Demonstration Kit User’s Guide

FIGURE 1-1: PICDEM™ LCD 2 HARDWARE

18 19 23

21 25 20

1.3 SAMPLE DEVICES

A PIM, populated with the PIC18F85J90, is included.

1.4 SAMPLE PROGRAMS

The PICDEM LCD 2 Demonstration Kit includes a CD-ROM with sample demonstration programs. Depending on the device, these programs may be used with some of the included sample devices with an In-Circuit Emulator (ICE) or with an In-Circuit Debugger (ICD). For each type of device (PIC16F946, PIC16F917, PIC18F8490 and PIC18F85J90), demo source code, several C and/or .asm files and compiled code (one HEX file) are provided.

NOTES:

PICDEM™ LCD 2 DEMONSTRATION

KIT USER’S GUIDE

Chapter 2. Getting Started

The PICDEM LCD 2 may be used as a stand-alone board with a preprogrammed device, with an In-Circuit Emulator (ICE) or with an In-Circuit Debugger (ICD). For a list

of PIC

Development Systems Ordering Guide”

2.1 PICDEM LCD 2 AS A STAND-ALONE BOARD – PREPROGRAMMED DEVICE

The PICDEM LCD 2 may be demonstrated immediately by following the steps listed below:

• Apply power to the PICDEM LCD 2. For information on acceptable power

microcontroller compatible ICEs or ICDs, please refer to the

(DS30177)

sources, see Appendix A. “Board Technical Information”.

Note: In the event that the preprogrammed PICDEM LCD 2 Demonstration Board

with the PIC18F85J90 PIM does not operate, check the following conditions:

- The jumper, J15, is configured as per the power supply used. The slide switch, S6, is switched to C.

- JP1, JP2, JP6, JP18 and JP19 are connected.

- The middle two jumpers of J14 are connected.

- JP9 and JP10 are connected.

- J11 connecting POT to AN0 and JP17 connecting V

The status of all other jumpers will not affect the preprogrammed demonstration.

Refer to Figure A-1 in Appendix A. “Board Technical Information”.

“Microchip

CC to I/O.

To reprogram the sample device, the following will be necessary:

1. User source code may be programmed to the device or the sample program may be restored from the file on the included CD-ROM.

2. An assembler, such as the MPASM™ Assembler (available with MPLAB IDE), or a compiler, such as MPLAB C18 C Compiler (PIC18XXXX/18XXJXX devices only) must be used.

Source code must be assembled or compiled into a HEX file before it can be programmed into the device. Microchip Technology’s MPASM Assembler or MPLAB C18 C Compiler may be used. Both are compatible with MPLAB IDE; however, other assemblers/compilers may be used.

3. Once the sample program is in the HEX file format, it can be programmed to a Flash device using an MPLAB ICD 2 or PM3 with an ICSP™ module. Microchip Technology’s MPLAB ICD 2 is compatible with MPLAB IDE.

If the code protection bit(s) have not been programmed, the on-chip program memory can be read out for verification purposes.

2.2 PICDEM LCD 2 USED WITH AN IN-CIRCUIT EMULATOR OR IN-CIRCUIT DEBUGGER

To use the PICDEM LCD 2 with an In-Circuit Emulator (ICE) or In-Circuit Debugger (ICD), refer to the tool’s user’s guide for instructions on how to power-up and configure the ICE/ICD, as well as how to connect to target boards.

Configure the PICDEM LCD 2 for the desired oscillator as described in Table 2-1. Refer to the ICE/ICD user’s guide for any oscillator configuration requirements.

TABLE 2-1: OSCILLATOR SELECTION

Oscillator Selection on

PICDEM™ LCD 2

Crystal JP9 and JP10 not connected. No canned oscillator on board,

crystal in Y2, JP11 and JP12 connected, caps in C16 and C17.

Canned Oscillator Put canned oscillator on socket Y3. Y2 empty, JP9, JP11 and

JP12 not connected.

Device Internal Oscillator JP11 and JP12 not connected. No canned oscillator on board. Ceramic Resonator – no

internal caps

Ceramic Resonator – with internal caps

JP9 and JP10 not connected. No canned oscillator on board, resonator in Y2, JP11 and JP12 connected, caps in C16 and C17.

JP9 and JP10 not connected. No canned oscillator on board, resonator in Y2, JP11 and JP12 connected, C16 and C17 empty.

Modification on PICDEM™ LCD 2

Note: The MPLAB ICE can be plugged onto the board without any transition

socket for PIC18FXX90 devices. For other devices, a transition socket may be needed.

PICDEM™ LCD 2 DEMONSTRATION

Chapter 3. Using the Demo Software

The demo programs are preprogrammed into the sample devices. Also, this program is included on the CD-ROM program disk for user reference. This demo program uses the functions or macros provided by the firmware LCD driver module to display the required characters, strings or icons on the LCD.

3.1 DEMO FIRMWARE OPERATION

The demo firmware is made up of four components, which are individually displayed on the LCD. The PIC microcontroller’s internal RC oscillator is used as the system clock source.

1. Voltmeter (F1) This mode uses the A/D module to measure the voltage of the R44 pot through analog channel AN0, and displays a voltage between 0.00V and 3.30V on the LCD using the LCD module. Voltage is continually updated until the mode is exited by pressing either the S1 or S2 switch.

2. Thermometer (F2)

This mode uses the A/D module to measure the voltage of the thermistor R11 through analog channel AN1, and converts to temperature both in Celsius and Fahrenheit and displays the temperature on the LCD using the LCD module. Temperature is continually updated until the mode is exited by pressing either the S1 or S2 switch.

3. Clock (F3)

This mode uses the Timer1 module and a 32 kHz clock crystal. Once this mode is entered from the main menu, the Real-Time Clock will start counting from 00:00:00. The S3 switch is used to increment minutes and the S4 switch is used to increment hours. To perform the increment operations, press and hold the switches. The clock keeps running continuously until the mode is exited by pressing either the S1 or S2 switch.

4. Charge Pump and Software Contrast (F4) This mode is available only for the PIC18F85J90 family of devices and uses the on-board charge pump and LCD voltage regulator. The LCD module is configured in Charge Pump mode and software contrast is achieved by either pressing S3 to increase the contrast or S4 to decrease the contrast until the mode is exited by pressing either the S1 or S2 switch. By exiting this mode, the Voltmeter mode is entered and retains the contrast level.

(1)

KIT USER’S GUIDE

(1)

Note 1: For low-power battery operation in JP17, remove jumper on Vcc and I/O

and connect I/O and RB0.

FIGURE 3-1: DEMO PROGRAM FLOWCHART

Power-up

Display Microchip Logo

Display Varitronix Logo

Sleep

Voltmeter Demo

Display F1

Start A/D

Conversion on

Channel AN0

Wake-up from Sleep

by Pressing either S1 or S2

Sleep

Display the Voltage

Is S1/S2

switch pressed?

Wake-up from Sleep

on Completion of Conversion

Yes

PICDEM™ LCD 2 Demonstration Kit User’s Guide

FIGURE 3-2: DEMO PROGRAM FLOWCHART

Thermometer Demo

Display F2

Start A2D

Conversion on

Channel AN1

Sleep

Display the Temperature

Is S1/S2

switch pressed?

Wake-up from Sleep

on Completion of Conversion

Yes

+ 39 hidden pages

MICROCHIP PICDEM LCD 2 User Guide

Preface

INTRODUCTION

ABOUT THIS GUIDE

Document Layout

CONVENTIONS USED IN THIS GUIDE

DOCUMENTATION CONVENTIONS

RECOMMENDED READING

THE MICROCHIP WEB SITE

DEVELOPMENT SYSTEMS CUSTOMER CHANGE NOTIFICATION SERVICE

CUSTOMER SUPPORT

1.1 WELCOME

Chapter 1. Introduction

1.2 PICDEM LCD 2 DEMONSTRATION BOARD HARDWARE FEATURES

FIGURE 1-1: PICDEM™ LCD 2 HARDWARE

1.3 SAMPLE DEVICES

1.4 SAMPLE PROGRAMS

Chapter 2. Getting Started

2.1 PICDEM LCD 2 AS A STAND-ALONE BOARD – PREPROGRAMMED DEVICE

2.2 PICDEM LCD 2 USED WITH AN IN-CIRCUIT EMULATOR OR IN-CIRCUIT DEBUGGER

TABLE 2-1: OSCILLATOR SELECTION

Chapter 3. Using the Demo Software

3.1 DEMO FIRMWARE OPERATION

FIGURE 3-1: DEMO PROGRAM FLOWCHART

FIGURE 3-2: DEMO PROGRAM FLOWCHART