MICROCHIP PICkit 2 Technical data

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PICkit

Microcontroller Programmer

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 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in this publication regarding device applications and the like is provided only for your convenience and may be superseded by updates.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 Mic rochip’s products as critical components in life support systems is not authorized except with e xpress written a pproval by M icrochip. No licenses are con veyed, implicitly or otherwise, u nder any Microchip 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, PICMASTER, 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, dsPICDEM, dsPICDEM.net, dsPICworks, ECAN, ECONOMONITOR, FanSense, FlexROM, fuzzyLAB, In-Circuit Serial Programming, ICSP, ICEPIC, Linear Active Thermistor, MPASM, MPLIB, MPLIN K, MPSIM, PICkit, PICDEM, PICDEM.net, PICLAB, PICtail, PowerCal, PowerInfo, PowerMate, PowerTool, rfLAB, rfPICDEM, Select Mode, Smart Serial, SmartTel, Total Endurance and WiperLock 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 quality system certification for its worldwide headquarters, design and wafer fabrication facilities in Chandler and Tempe, Arizona and Mountain View, California in October 2003. The Company’s quality system processes and procedures are for its PICmicro 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.

8-bit MCUs, KEELOQ

code hopping

PICkitTM 2 USER’S GUIDE

Table of Contents

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

Chapter 1. PICkit™ 2 Overview

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

1.2 Highlight s ......... .. ............... ................ ............... ................ ............... ................ 5

1.3 PICkit™ 2 Mi cr o c o nt ro ller Programm e r Con te n ts .................... ............... ....... 5

1.4 Introducing the PICkit™ 2 Microcontroller Programmer .................................5

1.5 PICkit™ 2 Mi cr o c o nt ro ller Programme r O v e rv ie w ...... ... ............... ............... ... 6

1.6 Program min g So f tw a re ..... ... ............... ............... ................ ............... ... ........... 8

Chapter 2. Getting Started

2.1 Introduction ................................................................................................... 11

2.2 Installing the PICkit 2 Programming Software .............................................. 11

2.3 Using the PIC kit 2 Programm in g S o ftware .... .. ............................. ............... . 11

Chapter 3. PICkit™ 2 and ICSP™

3.1 Introduction ................................................................................................... 17

3.2 Isolate V

3.3 Isolate ICSPCLK or PGC and ICSPDAT or PGD pins .................................18

3.4 V

DD ............... ....................... ................... ....................... ...................... ......... 19

3.5 V

SS ............................................................................................................... 20

3.6 Other Cons id e ra tions ..... ................ ............... ................ ............... ............... . 20

PP/MCLR/Port Pin ........................................................................... 18

Chapter 4. Updating the PICkit™ 2 Operating System

4.1 Introduction ................................................................................................... 21

4.2 Updating the PICkit 2 Microcontroller Programmer ...................................... 21

Chapter 5. Troubleshooting

5.1 Introduction ................................................................................................... 23

5.2 Frequently Asked Questions ..................................... ...................................23

Appendix 6. Hardware Schematics

6.1 Introduction ................................................................................................... 25

Worldwide Sales and Service ....................................................................................28

PICkitTM 2 User’s Guide

NOTES:

PICkit™ 2 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.

INTRODUCTION

This chapter contains general information about this user’s guide and customer support that will be useful prior to using the PICkit™ 2 Microcontroller Programmer. Items discussed in this chapter include:

• Document Layout

• Conventions Used in this Guide

• Warr anty Registration

• Recommended Reading

• The Microchip Web Site

• Development Systems Customer Change Notification Service

• Customer Support

• Document Revision History

• Troubleshooting

IDE on-line help.

DOCUMENT LAYOUT

This document describes how to use the PICkit™ 2 Microcontroller Programmer. The manual layout is as follows:

• Chapter 1. PICkit™ 2 Overview – An overview of the PICkit™ 2 Microcontroller Programmer.

• Chapter 2. Getting St ar ted – Provides instruction on how to get started using the PICkit™ 2 Microcontroller Programmer to program Flash-based PICmicro microcontroller units (MCU).

• Chapter 3: PICkit™ 2 and ICSP™ – Provides instruction on programming with the PICkit™ 2 Microcontroller Programmer using In-Circuit Serial Programming™ (ICSP™).

• Chapter 4: Up dating the PI Ckit™ 2 O perat ing Sys tem – Provides instruction on how to update your PICkit™ 2 Microcontroller Programmer’s Operating System.

PICkit™ 2 USER’S GUIDE

• Chapter 5: Troubleshooting – Provides resolutions for frequently asked questions that solve common problems when using the PICkit™ 2 Microcontroller Programmer.

• Appendix A: Hardware Schematics – Illustrates the PICkit™ 2 Microcontroller Programmer hardware schematic diagrams.

CONVENTIONS USED IN THIS GUIDE

This manual uses the following docum entatio n conv en tion s

DOCUMENTATION CONVENTIONS

Description Represents Examples

Code (Courier font):

Plain characters Sample code

Filenames and paths Angle brackets: < > Variables <label>, <exp> Square brackets [ ] Optional arguments MPASMWIN [main.asm] Curly brackets and pipe

character: { | } Lowercase characters i n

quotes Ellipses... Used to imply (but not show) addi-

0xnnn A hexadecimal number where n is a

Italic characters A variable argument; it can b e either a

Interface (Arial font):

Underlined, italic text with right arrow

Bold characters A window or dialog button to click OK, Cancel Characters in angle

brackets < >

Documents (Arial font):

Italic characters Referenced books MPLAB

Choice of mutually exclusive argu-

ments; An OR selection

Type of data

tional text that is not relevant to the

example

hexadecimal digit

type of data (in lo wercase ch arac te rs)

or a specific example (in uppercase

characters).

A menu selection from the menu bar File > Save

A key on the keyboard <Tab>, <Ctrl-C>

#define START c:\autoexec.bat

errorlevel {0|1}

"filename"

list

"list_option...,

[

"list_option"]

0xFFFF, 0x007A

char isascii (char, ch);

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. PICkit™ 2 Overview

1.1 INTRODUCTION

This chapter introduces the PICkit™ 2 Microcontroller Programmer and describes the PICkit™ 2 Microcontroller Programmer features and menu functions.

1.2 HIGHLIGHTS

This chapter discusses:

• The PICkit™ 2 Contents

• The PICkit™ 2 Overview

• PICkit™ 2 Programming Software

1.3 PICkit™ 2 MICROCONTROLLER PROGRAMMER CONTENTS

The PICkit™ 2 Microcontroller Programmer Kit contains the following items:

1. The PICkit™ 2 Microcontroller Programmer

2. USB cable

3. PICkit™ 2 Starter Kit CD ROM

1.4 INTRODUCING THE PICkit™ 2 MICROCONTROLLER PROGRAMMER

The PICkit™ 2 Microcontroller Programmer is a low cost development programmer. It is capable of programming most of Microchip’s Flash microcontrollers. For specific products supported, see the README file included on the PICkit™ 2 Starter Kit CD ROM.

The PICkit™ 2 Microcontroller Programmer Operating System (firmware) can be easily upgraded from the programming software. New device support can be added by updating the operating system. The latest firmware is available on Microchip’s web site, www.microchip.com.

Note: The PICkit™ 2 Microcontroller Programmer is intended for development

programming. For production programming, please consider the MPLAB PM3 Programmer or other third party programmers designed for the production environment.

PICkitTM 2 User’s Guide

1.5 PICkit™ 2 MICROCONTROLLER PROGRAMMER OVERVIEW

The PICkit™ 2 Microcontroller Programmer overview is shown in Figure 1-1.

FIGURE 1-1: PICkit™ 2 MICROCONTROLLER PROGRAMMER

Legend:

1 – Status LEDs 3 – Lanyard Connection 5 – Pin 1 Marker 2 – Push Button 4 – USB Port Connection 6 – Programming Connector

1.5.1 USB Port Connection

The USB Port Connection is a USB mini-B connector. Connect the PICkit™ 2 Microcontroller Programmer to the PC using the supplied USB cable.

1.5.2 Status LEDs

The Status LEDs indicate the status of the PICkit™ 2 Microcontroller Programmer.

1. Power (green) – Power is applied to the PICkit™ 2 Microcontroller Programmer via the USB port.

2. Target (yellow) – The PICkit™ 2 Microcontroller Programmer is powering the target device.

3. Busy (red) – The PICkit™ 2 Microcontroller Programmer is busy with a function such as Program mode or is alerting that a function is in progress.

1.5.3 Push Button

The push button is for initiating a function and presently not implemented.

PICkit™ 2 Overview

1.5.4 Programming Connector

The programming connector is a 6-pin connector (0.100" spacing) to connect to the target device. See Figure 1-2 for the pinout specification. Pin 1 is indicated by the triangle.

For more information on how to use the PICkit™ 2 Microcontroller Programmer with In-Circuit Serial Programming™ (ICSP™), refer to Chapter 3. “PICkit™ 2 and

ICSP™”.

FIGURE 1-2: PICkit™ 2 CONNECTOR PINOUT

Pin Descriptions 1 – VPP/MCLR

1 2 3 4 5 6

2 – VDD Target 3 – V

SS (Ground)

4 – ICSPDAT/PGD 5 – ICSPCLK/PGC 6 – Auxiliary

Note: The connector is a 6-pin header with 0.100" spacing and can accept

0.025" square pins.

1.5.5 Lanyard Connection

The lanyard connection is a convenient place to attach a lanyard or line to keep the PICkit™ 2 Microcontroller Programmer from becoming lost.

PICkitTM 2 User’s Guide

1.6 PROGRAMMING SOFTWARE

Start the PICkit™ 2 Programming Software by selecting Start > Programs > PICkit 2 Microcontroller Programmer > PICkit 2. The programming interface appears as shown

in Figure 1-3. For more information on how to use the PICkit™ 2 Programming Software, see

Chapter 2. “Getting Started”.

FIGURE 1-3: PICkit™ 2 Programming Software

Menu Bar

Device Configuration Status Bar

Progress Bar

Program Memory

Data EEPROM Memory

PICkit™ 2 Overview

1.6.1 Menu Bar

The menu bar selects various functions of the PICkit™ 2 Programming Software. A summary of the functions are:

FILE

Import File Export File Exit

– Exit the program (duplicated with the Quit button)

DEVICE FAMILY

Baseline devices

Mid-range Flash devices

PIC18 feature, presently grayed out)

PIC18J (future feature, presently grayed out)

dsPIC feature, presently grayed out)

– Import a hex file for programming – Export a hex file read from a device

(12-bit Core) – Configures the programming software for baseline Flash

(14-bit Core) – Configure the programming software for mid-range

– Configures the programming software for PIC18F Flash devices (future

– Configures the programming software for PIC18FXXJXX Flash devices

– Configures the programming software for dsPIC Flash devices (future

PROGRAMMER

Read Device and configuration bits.

Write Devi ce configuration bits.

Verify

– Verifies program memory, data EEPROM memory, ID locations and configuration bits read from the target MCU against the code stored in the programming software.

Erase

– Performs a bulk erase of the target MCU. OSCCAL and band gap values

are preserved (PIC12F629/675 and PIC16F630/676 only). Blank Check

memory, ID locations and configuration bits. Full Erase (OSCCAL and BG erased)

OSCCAL and Band Gap (BG) values (PIC12F629/675 and PIC16F630/676 only). Regenerate OSCCAL

PIC12F629/675 and PIC16F630/676). The AUX line must be connected to the RA4/T1G pin.

Set Band Gap Calibration Value PIC12F629/675 and PIC16F630/676).

TOOLS

Code-Protect Device future write operations.

Target Power Check Board

Programmer and reads the device ID of the target MCU. Download PICkit 2 Operating System

Microcontroller Programmer firmware operating system.

– Reads program memory, data EEPROM memory, ID locations,

– Writes program memory, data EEPROM memory , ID locations, and

– Performs a blank check of program memory, data EEPROM

– Performs a bulk erase including the

– Regenerates the OSCCAL value (only for

– Sets the band gap value (only for

– Enables code protection features of the microcontroller on

– Power target from PICkit™ 2 Microcontroller Programmer.

– Verifies communication with the PICkit™ 2 Microcontroller

– Performs a download of the PICkit™ 2

ABOUT

This displays a dialog box indicating the version and date.

PICkitTM 2 User’s Guide

1.6.2 Device Configuration

The Device Configuration window displays the PICmicro MCU device, User ID, Configuration Word and Checksum. It also displays OSCCAL and Band Gap, which are available only on PIC12F629/675 and PIC16F630/676 devices.

For mid-range (14-bit core) devices, the PICkit™ 2 Microcontroller Programmer reads the device ID and displays it in the window.

For baseline (12-bit core) devices, the user must select the device from a drop down box.

1.6.3 Status Bar

The status bar displays text status of the operations in progress. If an operation is successful, the status bar will display green background. If an operation fails, the status bar will display red. If an operation alerts a caution, the status bar will display yellow.

1.6.4 Progress Bar

The progress bar displays the progress of an operation.

1.6.5 Program Memory

Program code can be loaded into the PICkit™ 2 Programming Software from File > Import HEX or it can be read from the device by clicking on the Read button. The origin

of the code is displayed in the Source block. The Program Memory window displays the program code in hexadecimal. The code cannot be edited in the window.

The check box next to the Program Memory window controls whether the program memory will be programmed into the device or not. If the box is checked, the code displayed in the Program Memory window will be programmed into and used to verify the device. If the box is not checked, the program memory will not be programmed and it will not be used to verify the device.

1.6.6 Data EEPROM Memory

Similar to Program Memory above, program code can be loaded into the PICkit™ 2 Programming Software from File > Import HEX clicking on the Read button. The origin of the code is displayed in the Source block. The Data EEPROM Memory window displays the program code in hexadecimal. The code cannot be edited in the window.

The check box next to the Data EEPROM Memory window controls whether the data EEPROM memory will be programmed into the device or not. If the box is checked, the code displayed in the Data EEPROM Memory window will be programmed into and used to verify the device. If the box is not checked, the data EEPROM memory will not be programmed and it will not be used to verify the device.

or it can be read from the device by

2.1 INTRODUCTION

PICkitTM 2 USER’S GUIDE

Chapter 2. Getting Started

This chapter gives instruction on how to get started using the PICkit 2 Microcontroller Programmer to program Flash-based PICmicro

For information on how to use the PICkit 2 Microcontroller Programmer with In-Circuit Serial Programming™ (ICSP™), refer to Chapter 3. “PICkit™ 2 and ICSP™”.

For information on how to update the PICkit 2 firmware operating system, refer to Chapter 4. “Updating the PICkit™ 2 Operating System”.

microcontroller units (MCU).

2.2 INSTALLING THE PICkit 2 PROGRAMMING SOFTWARE

Insert the PICkit™ 2 Starter Kit CD ROM into the CD ROM drive. In a few moments, the introductory screen should be displayed. Follow the directions on the screen for installing the PICkit™ 2 Programming Software.

If the introductory screen does not appear, browse to the CD ROM directory and select the AutorunPro.exe program.

2.3 USING THE PICkit 2 PROGRAMMING SOFTWARE

Start the PICkit™ 2 Programming Software by selecting Start > Programs > PICkit 2 Microcontroller Programmer > PICkit 2. The programming interface appears as shown

in Figure 2-1.

FIGURE 2-1: PICkit 2 PROGRAMMING SOFTWARE

PICkitTM 2 User’s Guide

2.3.1 Selecting the Device Family

The PICkit 2 Microcontroller Programmer is capable of programming a variety of Flash-based Microchip PICmicro

The first step in using the PICkit 2 Microcontroller Programmer is to select the device family by clicking on the Device Family menu as shown in Figure 2-2.

FIGURE 2-2: SELECT DEVICE FAMILY

microcontrollers.

2.3.2 Device Identification

If the Mid-range (14-bit core) Flash device family is selected, the PICkit 2 Microcontroller Programmer will automatically read the device ID word from PICmicro MCU and display it in the Configuration window as shown in Figure 2-3.

FIGURE 2-3: IDENTIFY DEVICE

If the Baseline (12-bit core) Flash device family is selected, the user must select the specific device from the device drop down box as shown in Figure 2-4.

CAUTION

Ensure that the correct Baseline Flash device has been selected. These devices do not contain a device ID to confirm device selection. Choosing the wrong Baseline Flash device may cause an erasing of the OSCCAL value stored in the last memory location.

FIGURE 2-4: SELECT BASELINE FLASH DEVICE

Getting Started

2.3.3 Target Power

The PICkit 2 Microcontroller Programmer can supply power to the target. To enable power to the target device, check the Target Power check box as shown in Figure 2-5.

Note: When starting the PICkit 2 Microcontroller Program, target power defaults

to off.

CAUTION

The USB port current limit is set to 100 mA. If the target plus PICkit 2 Microcontroller Programmer exceed this current limit, the USB port will turn off. The target may be powered externally if more power is required.

FIGURE 2-5: ENABLE TARGET POWER

2.3.4 Import HEX File

To import a compiled program (hex file), select File > Import HEX as shown in Figure 2-6. Browse for the hex file and click Open. The code is displayed in the Program Memory and EE Data Memory windows. The name of the hex file is displayed in the Source block.

FIGURE 2-6: IMPORT HEX FILE

PICkitTM 2 User’s Guide

2.3.5 Write

After a device family has been selected and a hex file has been imported, the target PICmicro MCU can be programmed by clicking on the Write button. The PICmicro MCU will be erased and programmed with the hex code previously imported. The status of the Write operation is displayed in the status bar located under the Device Configuration window.

Note: The device will be erased prior to programming. The PICkit 2 Microcontroller

Programmer uses the bulk erase method that requires V

4.5 to 5.5V

If the write is successful, the status bar turns green and displays “Write Successful”, as shown in Figure 2-7.

FIGURE 2-7: WRITE SUCCESSFUL STATUS

DD voltage between

If the write fails, the status bar turns red and displays “Verify failed”, as shown in Figure 2-8. This error indicates that the data was corrupted during the programming sequence. If this error is displayed, try writing the program to the device again. If the error continues, see Chapter 5. “Troubleshooting” for assistance.

FIGURE 2-8: WRITE ERROR STATUS

Getting Started

2.3.6 Automatic File Reload

Prior to each write, the imported hex file time stamp is compared to the version on the disk. If the version on the disk is newer, it is reloaded. This occurs only when a hex file has been read from the disk.

This feature ensures that the latest version built by MPLAB device.

2.3.7 Verify

The Verify function verifies the device program to the imported hex file. It compares all areas of memory including program memory, data EEPROM memory, ID and configuration bits.

To verify the code, import the hex file and click the Verify button. If the code is the same, the status bar turns green and displays “Device Verified”. If a discrepancy is found, the status bar turns red and displays where the error is located: “Error in Program Memory, Data EEPROM Memory, or Configuration Bits”.

2.3.8 Read

To view the code written to the PICmicro MCU, click the Read button. The code is displayed in the Program and Data EEPROM Memory windows for your review. If all zeros are displayed, it is possible that the device is code-protected.

IDE will be written to the

2.3.9 Code-Protect Device

The Code-Protect Device function enables the code protection features of the PICmicro MCU. To protect the code, complete the following steps:

1. Import hex file.

2. Select Tools > Code Protect Device

3. Click Write.

FIGURE 2-9: ENABLE CODE PROTECT

Note: If the device is read after it has been code-protected, Program Memory and

Data EEPROM Memory windows will display all zeros.

, as shown in Figure 2-9.

PICkitTM 2 User’s Guide

2.3.10 Erase

The Erase function erases the program memory, data EEPROM memory, ID and configuration bits. However, this function is not normally needed since the Write function performs an erase operation prior to programming the PICmicro MCU.

To erase the device, click the Erase button.

Note: The PICkit 2 Microcontroller Programmer uses the bulk erase method that

requires V

DD voltage between 4.5 to 5.5V.

Chapter 3. PICkit™ 2 and ICSP™

3.1 INTRODUCTION

The PICkit™ 2 Microcontroller Programmer can program PICmicro® microcontrollers that are installed in an application circuit using In-Circuit Serial Programming™ (ICSP™). In-Circuit Serial Programming (ICSP) requires five signals:

•V

PP – Programming Voltage; when applied, the device goes into Programming

mode.

• ICSPCLK or PGC – Programming Clock; a unidirectional synchronous serial clock line from the programmer to the target.

• ICSPDAT or PGD – Programming Data; a bidirectional synchronous serial data line.

•V

DD – Power Supply positive voltage. SS – Power Supply ground reference.

•V

However, the application circuit must be designed to allow all the programming signals to be connected to the PICmicro device without distorting the programming signals. Figure 3-1 shows a typical circuit as a starting point when designing an application circuit for ICSP. For successful ICSP programming, the precautions in the following sections need to be followed.

PICkitTM 2 USER’S GUIDE

Note: For details on how a specific device is programmed, refer to the device

programming specification available from the Microchip web site at www.microchip.com.

FIGURE 3-1: TYPICAL ICSP™ APPLICATION CIRCUIT

Isolation Circuitry: Resistor or Schottky-type diode

+5V

10k*

470 Ohm*

0.1 μF*

1 2 3 4

VDD RA5 RA4 RA3/MCLR

RA0/ICSPDAT

RA1/ICSPCLK

/VPP

Target Microcontroller

Device

RA2

8 7 6 5

PICkit™ 2

Programming

Header

VPP/MCLR

VDD

VSS ICSPDAT/PGD

ICSPCLK/PGC

AUX

To Application Circuit

* Typical Values

PICkitTM 2 User’s Guide

3.2 ISOLATE VPP/MCLR/PORT PIN

When VPP voltage is applied, the application circuit needs to take into consideration that the typical V

3.2.1 If the VPP pin is used as a MCLR pin.

The application circuit typically is connected to a pull-up resistor/capacitor circuit, as recommended in the device data sheet. Care must be taken so that the V slew rate is not slowed down and exceeds the rise time in the programming specification (typically 1 μs).

If a supervisory circuit or a push button is interfaced to the MCLR recommended that they be isolated from the V diode or limiting resistor as shown in Figure 3-1. For more information about using supervisory circuits with ICSP, see Application Note AN820 “System Supervisors in ICSP™ Architectures” (DS00 8 20).

3.2.2 If the VPP pin is used as an I/O port pin.

The application circuit that connects to the I/O pin may not be able to handle the +12V voltage. It is recommended to use a Schottky-type diode or limiting resistor as shown in Figure 3-1 to isolate the circuitry.

PP voltage is +12V. This may be an issue in the following situations:

PP voltage

pin, it is

PP voltage by using a Schottky-type

3.3 ISOLATE ICSPCLK OR PGC AND ICSPDAT OR PGD PINS

The ICSPCLK or PGC and ICSPDAT or PGD pins need to be isolated from the application circuit to prevent the programming signals from being affected by the application circuitry. ICSPCLK or PGC is a unidirection synchronous serial programming clock line from the programmer to the target. ICSPDAT or PGD is a bidirectional synchr ono us se ri al programming data line.

If the design permits, dedicate these pins for ICSP. However, if the application circuit requires that these pins be used in the application circuit, design the circuitry in a manner that does not alter the signal level and slew rates. Isolation circuitry will vary according to the application. Figure 3-1 shows one possibility by using series resistors to isolate the ICSP signals from the application circuit.

3.4 VDD

PICkit™ 2 and ICSP™

During ICSP programming, the PICmicro MCU needs to be powered in accordance with the device specification. Typically, the PICmicro MCU supply voltage is connected to the application circuit supply voltage. The application circuit can be powered by the PICkit 2 Microcontroller Programmer or externally. There are a few precautions that need to be observed.

3.4.1 The application circuit is powered by the PICkit 2

Microcontroller Programmer.

The PICkit 2 Microcontroller Programmer supply voltage (VDD) is +5V. If the application circuit operates at a different voltage, isolation circuitry may be required so that the two voltage levels do not conflict.

CAUTION

The PICkit 2 Microcontroller Programmer supply voltage (VDD) is +5V.

CAUTION

The USB port current limit is set to 100 mA. If the target plus PICkit 2 Microcontroller Programmer exceeds this current limit, the USB port will turn off. The target may be powered externally if more power is required.

3.4.2 The application circuit is powered externally.

CAUTION

The PICkit 2 Microcontroller Programmer supply voltage (VDD) is +5V.

3.4.3 Bulk Erase is used.

Some PICmicro MCU devices use a bulk erase function to erase program memory, data EEPROM memory, ID locations, and configuration bits. Typically, the bulk erase function requires a supply voltage (V programming specification for device specific requirements).

This voltage range can be a problem if the application circuit is designed to operate at a different supply voltage range. In order to bulk erase the PICmicro MCU, the application circuit needs to take into consideration the bulk erase voltage requirement while protecting any voltage sensitive circuitry.

DD) of 4.5 to 5.5 Volts (refer to the device

PICkitTM 2 User’s Guide

3.5 VSS

The power supply ground reference, Vss, must be at the same potential as the application circuit.

3.6 OTHER CONSIDERATIONS

Minimize the distance the ICSP signals must travel by placing the ICSP connector as close to the application circuit PICmicro MCU as possible. Minimize any cable length between the PICkit 2 Microcontroller Programmer and application circuit PICmicro MCU. The goal is to keep the ICSP signals within the level and slew rate specifications for successful programming.

PICkitTM 2 USER’S GUIDE

Chapter 4. Updating the PICkit™ 2 Operating System

4.1 INTRODUCTION

This chapter describes how to update the PICkit™ 2 Microcontroller Programmer’s operating system.

4.2 UPDATING THE PICkit 2 MICROCONTROLLER PROGRAMMER

To update the PICkit 2 Microcontroller Programmer firmware Operating System, complete the following steps.

Step 1. Download the latest PICkit 2 Operating System from the Microchip web

site at www.microchip.com.

Step 2. From the menu, select Tools > Download PICKit 2 Operating System

shown in Figure 4-1.

FIGURE 4-1: DOWNLOAD PICkit 2 OPERATING SYSTEM

Step 3. Browse to the directory where the latest Operating System code was

saved as shown in Figure 4-2.

Step 4. Select the PK2*.hex file and click on the Open button.

FIGURE 4-2: SELECT PIC k it 2 OPERAT ING SYSTEM

The progress of the OS update will be displayed in the status bar of the programming software and the Busy LED on the PICkit 2 Microcontroller Programmer will flash. When the update completes successfully, the status bar will display “Operating System Verified” and the Busy LED will go out. The operating system update is then complete.

PICkitTM 2 User’s Guide

NOTES:

Chapter 5. Troubleshooting

5.1 INTRODUCTION

This chapter describes questions and answers to common problems associated with using the PICkit™ 2 Microcontroller Programmer and how to resolve them.

5.2 FREQUENTLY ASKED QUESTIONS

Device is not recognized

Question Why am I receiving an “Insert Device” message? Answer Veri fy that the device is supported and that the t arget MCU is connected to the PICkit™2

Microcontroller Programmer in accord ance with Chap ter 3. “PICkit™ 2 and ICSP™”.

Current Limit Exceeded

Question Why am I receiving the error message “USB Hub Current Limit Exceeded” from the

Microsoft Answer Check for sh orts on the circuit board.

Windows® program?

PICkitTM 2 USER’S GUIDE

Microsoft® Windows® Driver

Question After plugging the PICkit™ 2 Microcontroller Programmer into the USB port, Windows®

98 SE asks for a driver. Where is the driver? Answer PICkit™ 2 Microcontroller Programmer uses the drivers included with Windows®.

When Windows device.” Then select the check box next to “ Microsoft Windows Update” and click Ne xt. Windows will automatically install the appropriate driver. Do not use Microchip’s ICD 2 USB driver.

98 SE prompts for a driver, select “Search for the best driver for your

Verify and Read Return all Zeros

Question When the Verify or Read buttons are clicked, the Program Memory window comes up

with all zeros. What is wrong? Answer The device may be code-protected. Ensure code protection has not been selected in

the Configuration Word.

PICkitTM 2 User’s Guide

Microsoft

Question Can I run on Windows Answer No. These operating systems either do not support USB or have drivers that are not

compatible.

Windows® 95/98/NT

95/98/NT?

Appendix 6. Hardware Schematics

6.1 INTRODUCTION

This appendix contains PICkit™ 2 Microcontroller Programmer schematic diagrams.

FIGURE 6-1: PICkit 2 SCHEMATIC DIAGRAM (PAGE 1 OF 2)

PICkitTM 2 USER’S GUIDE

+5V_USB

12345

IRLM6402

MCP6001U

10 KΩ

RC5/D+/VP

RC6/TX/CK

RC7/RX/DT/SDO

+V_TG

R31

100

0.1 μF

+5V_USB

10 KΩ

+5V_USB

10 KΩ

USB

Mini-B

SDA

SCL

KΩ

2.7

KΩ

2.7

VCC

SCL

24LC512

SDA

2^0

C10

0.1 μF

DS2

ICSP

GREEN

POWER

DS3

YELLOW

TARGET

DS1

RED

BUSY

SW1

PROGRAM

VPP FEEDBACK

234

RA0/AN0

PIC18F2550/SO

MCLR TGT

AUX

ICSPDAT

ICSPCLK

VDD TGT FB

567

RA1/AN1

REF-/CVREF

RA3/AN3/VREF+

RA2/AN2/V

RA4/T0CKI/C1OUT/RCV

RA5/AN4/SS/HLVDIN/C2OUT

VDD TGT P

VDD TGT N

R33

33Ω

PP ON

SDA

SCL

2223242526

RB4/AN11/KBI0

RB2/AN8/INT2/VM0

RB3/AN9/CCP2/VP0

RB1/AN10/INT1/SCK/SCL

RB0/AN12/INT0/FLT0/SDI/SDA

+5V_USB

RB6/KBI2/PGC

RB7/KBI3/PGD

RB5/KBI1/PGM

RC0/T1OSO/TI3CKI

16V

10 μF

0.1 μF

0.47 μF

VDD_TGT_ADJ

VPP PUMP

141516

UEB

RC2/CCP1

RC4/D-/VM

RC1/T1OSI/CCP2/UOE

470Ω

SCL

VCC

24LC512

SDA

SCL

SDA

2^1

+5V_USB

0.1 μF

MCLR/VPP/RE3

OSC1/CLKI

20 MHz

22 pF

OSC2/CLKO/RA6

22 pF

VSS

+5V_USB

0.1 μF

+5V_USB

PICkitTM 2 User’s Guide

FIGURE 6-2: PICkit 2 SCHEMATIC DIAGRAM (PAGE 2 OF 2)

33Ω

R11

10Ω

R10

VDD TGT FB

+V_TGT

AUX

MMBT3906

R26

C12

0.1 μF

C11

10 μF

4.7 KΩ

16V

R13

FDC6420C

1 KΩ

Q1(N)

AUX

R23

47 μF

ICSPCLK

ICSPDAT

100 KΩ

25V

DD_TGTVPP

GND

MMBT3906

R25

R28

100Ω

MMBT3904

10 KΩ

MMBT3904

R27

R29

10 KΩ

ICSP

33Ω

R15

MMBT3906

10Ω

R14

R17

ICSPCLK

MMBD4148

BAT54

R30

2.7 KΩ

High turns on N

Q2(P)

R20

10Ω

R19

820Ω

VDD_TGT

Low turns on P

+5V_USB

MMBT3906

ICSPDAT

C15

R12

R16

10 KΩ

VDD TGT N

10 KΩ

VDD TGT P

680 μH

+V_TGT

C14

16V

10 μF

C13

0.1 μF

R22

4.7 KΩ

BAT54

MMBT3904

R21

10 KΩ

VPP PUMP

R24

2.7 KΩ

VPP FEEDBACK

VPP ON

MCLR TGT

NOTES:

PICkit™ 2 USER’S GUIDE

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04/20/05

MICROCHIP PICkit 2 Technical data

Specifications and Main Features

Frequently Asked Questions

User Manual

Trademarks

Preface

Chapter 1. PICkit™ 2 Overview

1.1 INTRODUCTION

1.2 HIGHLIGHTS

1.3 PICkit™ 2 MICROCONTROLLER PROGRAMMER CONTENTS

1.4 INTRODUCING THE PICkit™ 2 MICROCONTROLLER PROGRAMMER

1.5 PICkit™ 2 MICROCONTROLLER PROGRAMMER OVERVIEW

FIGURE 1-1: PICkit™ 2 MICROCONTROLLER PROGRAMMER

FIGURE 1-2: PICkit™ 2 CONNECTOR PINOUT

1.6 PROGRAMMING SOFTWARE

FIGURE 1-3: PICkit™ 2 Programming Software

2.1 INTRODUCTION

Chapter 2. Getting Started

2.2 INSTALLING THE PICkit 2 PROGRAMMING SOFTWARE

2.3 USING THE PICkit 2 PROGRAMMING SOFTWARE

FIGURE 2-1: PICkit 2 PROGRAMMING SOFTWARE

FIGURE 2-2: SELECT DEVICE FAMILY

FIGURE 2-3: IDENTIFY DEVICE

FIGURE 2-4: SELECT BASELINE FLASH DEVICE

FIGURE 2-5: ENABLE TARGET POWER

FIGURE 2-6: IMPORT HEX FILE

FIGURE 2-7: WRITE SUCCESSFUL STATUS

FIGURE 2-8: WRITE ERROR STATUS

FIGURE 2-9: ENABLE CODE PROTECT

Chapter 3. PICkit™ 2 and ICSP™

3.1 INTRODUCTION

FIGURE 3-1: TYPICAL ICSP™ APPLICATION CIRCUIT

3.2 ISOLATE VPP/MCLR/PORT PIN

3.3 ISOLATE ICSPCLK OR PGC AND ICSPDAT OR PGD PINS

3.4 VDD

3.5 VSS

3.6 OTHER CONSIDERATIONS

Chapter 4. Updating the PICkit™ 2 Operating System

4.1 INTRODUCTION

4.2 UPDATING THE PICkit 2 MICROCONTROLLER PROGRAMMER

FIGURE 4-1: DOWNLOAD PICkit 2 OPERATING SYSTEM

FIGURE 4-2: SELECT PIC k it 2 OPERAT ING SYSTEM

Chapter 5. Troubleshooting

5.1 INTRODUCTION

5.2 FREQUENTLY ASKED QUESTIONS

Appendix 6. Hardware Schematics

6.1 INTRODUCTION

FIGURE 6-1: PICkit 2 SCHEMATIC DIAGRAM (PAGE 1 OF 2)

FIGURE 6-2: PICkit 2 SCHEMATIC DIAGRAM (PAGE 2 OF 2)

WORLDWIDE SALES AND SERVICE