Microchip Technology PICDEM LCD 2 Demonstration Kit User guide

PICDEM™ LCD 2

Demonstration Kit

User’s Guide

 2010 Microchip Technology Inc. DS51662C

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, dsPIC, K

EELOQ, KEELOQ logo, MPLAB, PIC, PICmicro, PICSTART,

PIC

logo, rfPIC and UNI/O are registered trademarks of Microchip Technology Incorporated in the U.S.A. and other countries.

FilterLab, Hampshire, HI-TECH C, Linear Active Thermistor, MXDEV, MXLAB, SEEVAL 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, HI-TIDE, In-Circuit Serial Programming, ICSP, Mindi, MiWi, MPASM, MPLAB Certified logo, MPLIB, MPLINK, mTouch, Omniscient Code Generation, PICC, PICC-18, PICDEM, PICDEM.net, PICkit, PICtail, REAL ICE, rfLAB, Select Mode, Total Endurance, TSHARC, UniWinDriver, 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.

ISBN: 978-1-60932-686-9

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

DS51662C-page 2  2010 Microchip Technology Inc.

PICDEM™ LCD 2 DEMONSTRATION

KIT USER’S GUIDE

Table of Contents

Preface ...........................................................................................................................5

Chapter 1. Introduction

1.1 Welcome ............. .. .......................................... ............................................. 11

1.2 PICDEM LCD 2 De mo n s tration Board H ar d w a re F e atures ................ ......... 12

1.3 Sample Devices .... ... .. ..................................................................................13

1.4 Sample Pro g ram s ................................................. ........................................ 13

Chapter 2. Getting Started

2.1 PICDEM LCD 2 as a Stand-Alone Board – Preprogrammed Device ...........15

2.2 PICDEM LCD 2 Used with an In-Circuit Emulator or In-Circuit Debugger ... 16

Chapter 3. Using the Demo Software

3.1 Demo Firmware Operation ........................................................................... 17

Appendix A. Board Technical Information

A.1 Processors ............ ........................................................ ............................... 25

A.2 LCD Displa y .................................................................. .. .. ........................... 26

A.3 LED Displa y ........................................................................ .. ... .................... 46

A.4 Charge Pump and VLCAP ...........................................................................46

A.5 Resistive Ladder Versus Charge Pump ......................... .. ............................46

A.6 Oscillato r O p ti on s ............................................................ .. .. ......................... 47

A.7 RS-232 Serial Port .......................................................................................47

A.8 Real-Time Cl o ck .......... .. .. ............................................................................ 47

A.9 Serial EEPROM ...........................................................................................47

A.10 Analog Inpu t ............................................................................................... 47

A.11 Tempera tu r e Sen s o r ....................................................... ........................... 48

A.12 Switches ..................................................................................................... 48

A.13 ICD Connector ...........................................................................................48

A.14 Power Supp ly ........................................................... ... .. ............................. 49

A.15 Board Lay o u t a nd Schematics ................................................................... 52

A.16 PIM Layout and Schematics ......................................................................56

Worldwide Sales and Service ....................................................................................66

 2010 Microchip Technology Inc. DS51662C-page 3

PICDEM™ LCD 2 Demonstration Kit Us e r’ s Gui de

NOTES:

DS51662C-page 4  2010 Microchip Technology Inc.

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 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 online help files.

The VL logo is a registered logo of V aritronix Limited. The illustrations on pages 26, 27, 31, 36, 39 and 45 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 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 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. “Getti ng Started” – Describes how to use the PICDEM LCD 2 Demonstration Board.

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

• Appendix A. “Board T echnical Informa tion” – Shows the schematic and layout diagrams for the PICDEM LCD 2 Demonstration Board.

 2010 Microchip Technology Inc. DS51662C-page 5

PICDEM™ LCD 2 Demonstration Kit Us e r’ s Gui de

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

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

DS51662C-page 6  2010 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.

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, PIC16X9XX, and PIC16X19XX 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 prog r a ms are pro v ided to de mon st rat e th e un iq ue fe at ur es of the supported devi ces.

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-cir cu it de bu gg er ( e.g . , MP LA B

• Sample Programs

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

 2010 Microchip Technology Inc. DS51662C-page 11

PICDEM™ LCD 2 Demonstration Kit Us e r’ s Gui de

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, PIC18F87J90, PIC18F8490, PIC16F914/917, PIC16F946, and PIC16F/LF1946/47 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, PIC18FXX90, PIC16F9XX,

and PIC16X19XX 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 k, 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 k (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.

DS51662C-page 12  2010 Microchip Technology Inc.

FIGURE 1-1: PICDEM™ LCD 2 HARDWARE

18 19 23

21 25 20

Introduction

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, PIC18F85J90, PIC18F87J90 and PIC16F/LF1946/47), demo source code, several C and/or .asm files and compiled code (one HEX file) are provided.

 2010 Microchip Technology Inc. DS51662C-page 13

PICDEM™ LCD 2 Demonstration Kit Us e r’ s Gui de

NOTES:

DS51662C-page 14  2010 Microchip Technology Inc.

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” (DS30177).

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 “Microchip

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”.

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.

 2010 Microchip Technology Inc. DS51662C-page 15

PICDEM™ LCD 2 Demonstration Kit Us e r’ s Gui de

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 T able 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 an d 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.

DS51662C-page 16  2010 Microchip Technology Inc.

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 and PIC18F87J90 families 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 V

and connect I/O and RB0.

 2010 Microchip Technology Inc. DS51662C-page 17

CC and I/O

PICDEM™ LCD 2 Demonstration Kit Us e r’ s Gui de

Power-up

Display the Voltage

Is S1/S2

switch pressed?

Start A/D

Display Microchip Logo

Display Varitronix Logo

Display F1

Conversion on

Sleep

Yes

Wake-up from Sleep

by Pressing either S1 or S2

Wake-up from Sleep

Voltmeter Demo

Channel AN0

on Completion of Conversion

FIGURE 3-1: DEMO PROGRAM FLOWCHART

DS51662C-page 18  2010 Microchip Technology Inc.

Using the Demo Software

Display the Temperature

Is S1/S2

switch pressed?

Display F2

Sleep

Yes

Wake-up from Sleep

on Completion of Conversion

Start A2D

Conversion on

Channel AN1

Thermometer Demo

FIGURE 3-2: DEMO PROGRAM FLOWCHART

 2010 Microchip Technology Inc. DS51662C-page 19

PICDEM™ LCD 2 Demonstration Kit Us e r’ s Gui de

Is S4

switch pressed?

Display F3

Display Time

Increment

Is S1/S2

switch pressed?

Is S3

switch pressed?

Yes

Minute

Yes

Increment

Hour

Yes

Real-Time Clock Demo

Sleep

Wake-up from Sleep

Every Second

FIGURE 3-3: DEMO PROGRAM FLOWCHART

DS51662C-page 20  2010 Microchip Technology Inc.

+ 46 hidden pages

Microchip Technology PICDEM LCD 2 Demonstration Kit User guide

Specifications and Main Features

Frequently Asked Questions

User Manual

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

FIGURE 3-3: DEMO PROGRAM FLOWCHART