PIC18F4XK20 Starter Kit
User’s Guide
© 2009 Microchip Technology Inc.
DS41344C
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and may be superseded by updates.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, KEELOQ, KEELOQ logo, MPLAB, PIC, PICmicro,
PICSTART, rfPIC, SmartShunt and UNI/O are registered
trademarks of Microchip Technology Incorporated in the
U.S.A. and other countries.
FilterLab, Hampshire, Linear Active Thermistor, MXDEV,
MXLAB, SEEVAL, SmartSensor and The Embedded Control
Solutions Company are registered trademarks of Microchip
Technology Incorporated in the U.S.A.
Analog-for-the-Digital Age, Application Maestro, CodeGuard,
dsPICDEM, dsPICDEM.net, dsPICworks, dsSPEAK, ECAN,
ECONOMONITOR, FanSense, In-Circuit Serial
Programming, ICSP, ICEPIC, Mindi, MiWi, MPASM, MPLAB
Certified logo, MPLIB, MPLINK, mTouch, nanoWatt XLP,
PICkit, PICDEM, PICDEM.net, PICtail, PIC32 logo, PowerCal,
PowerInfo, PowerMate, PowerTool, REAL ICE, rfLAB, Select
Mode, Total Endurance, TSHARC, 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.
© 2009, Microchip Technology Incorporated, Printed 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 design centers in California
and India. The Company’s quality system processes and procedures
are for its PIC® MCUs and dsPIC® DSCs, KEELOQ® code hopping
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.
DS41344C-page ii
© 2009 Microchip Technology Inc.
PIC18F4XK20 STARTER KIT
USER’S GUIDE
Table of Contents
Chapter 1. PIC18F4XK20 Starter Kit Overview
1.1 Overview ..................................................................................................................... 5
1.2 Highlights ..................................................................................................................... 5
1.3 PIC18F4XK20 Starter Kit Contents ............................................................................. 5
1.4 PIC18F4XK20 Starter Kit Layout ................................................................................. 6
1.4.1 Analog Input Filtering Circuit ....................................................................... 7
1.4.2 PWM Filtering from RC2 .............................................................................. 7
1.4.3 PICtail™ Daughter Board Interface ............................................................. 7
1.4.4 PICkit™ Serial Analyzer Connector ............................................................. 7
1.4.5 ICSP™ (In-Circuit Serial Programmer™) Connector .................................. 7
1.4.6 Temperature Sensor ................................................................................... 8
1.4.7 25LC1024 Serial EEPROM ......................................................................... 8
1.4.8 32.768 kHz Crystal ...................................................................................... 8
1.4.9 128x64 OLED .............................................................................................. 8
1.5 Powering the Demo Board .......................................................................................... 8
1.6 Quick Start Guide ........................................................................................................ 8
1.6.1 Downloading Demonstration Software ........................................................ 8
1.7 Programming Lessons .............................................................................................. 10
Chapter 2. Troubleshooting
2.1 Introduction ................................................................................................................ 11
2.1.1 The board does not power up. .................................................................. 11
2.1.2 Microcontroller is not executing code. ....................................................... 11
2.1.3 The microcontroller will not program. ........................................................ 11
Appendix A. Board Schematics
A.1 Introduction ............................................................................................................... 13
© 2009 Microchip Technology Inc.
DS41344C-page iii
PIC18F4XK20 Starter Kit User’s Guide
NOTES:
DS41344C-page iv
© 2009 Microchip Technology Inc.
PIC18F4XK20 Starter 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® IDE on-line help.
Select the Help menu, and then Topics to open a list of available on-line help files.
INTRODUCTION
This chapter contains general information that will be useful to know before using the
PIC18F4XK20 Starter Kit. Items discussed in this chapter include:
•
•
•
•
•
•
•
Document Layout
Conventions Used in this Guide
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 PIC18F4XK20 Starter Kit as a development
tool to emulate and debug firmware on a target board. The manual layout is as follows:
• Chapter 1. PIC18F4XK20 Starter Kit Overview – Introduces the PIC18F4XK20
Starter Kit and provides a brief description of the hardware and the new features.
• Chapter 2. Troubleshooting – Describes the common problems of the
PIC18F4XK20 Demonstration Board and their solutions.
• Appendix A. Board Schematics – Provides schematic diagrams for the
PIC18F4XK20 Demonstration Board.
© 2009 Microchip Technology Inc.
DS41344C-page 1
PIC18F4XK20 Starter Kit User’s Guide
CONVENTIONS USED IN THIS GUIDE
This manual uses the following documentation conventions:
DOCUMENTATION CONVENTIONS
Description
Arial font:
Italic characters
Initial caps
Quotes
Underlined, italic text with
right angle bracket
Bold characters
N‘Rnnnn
Text in angle brackets < >
Courier New font:
Plain Courier New
Represents
Referenced books
Emphasized text
A window
A dialog
A menu selection
A field name in a window or
dialog
A menu path
MPLAB® IDE User’s Guide
...is the only compiler...
the Output window
the Settings dialog
select Enable Programmer
“Save project before build”
A dialog button
A tab
A number in verilog format,
where N is the total number of
digits, R is the radix and n is a
digit.
A key on the keyboard
Click OK
Click the Power tab
4‘b0010, 2‘hF1
Italic Courier New
Sample source code
Filenames
File paths
Keywords
Command-line options
Bit values
Constants
A variable argument
Square brackets [ ]
Optional arguments
Curly brackets and pipe
character: { | }
Ellipses...
Choice of mutually exclusive
arguments; an OR selection
Replaces repeated text
Represents code supplied by
user
DS41344C-page 2
Examples
File>Save
Press <Enter>, <F1>
#define START
autoexec.bat
c:\mcc18\h
_asm, _endasm, static
-Opa+, -Opa0, 1
0xFF, ‘A’
file.o, where file can be
any valid filename
mcc18 [options] file
[options]
errorlevel {0|1}
var_name [,
var_name...]
void main (void)
{ ...
}
© 2009 Microchip Technology Inc.
Preface
RECOMMENDED READING
This user's guide describes how to use the PIC18F4XK20 Starter Kit. Other useful documents are listed below. The following Microchip documents are available and recommended as supplemental reference resources.
PIC18F46K20 Data Sheet (DS41303)
This data sheet summarizes the features of the PIC18F46K20. It provides essential
information needed to develop software for this device.
MCP9700/9700A and MCP9701/9701A Data Sheet (DS21942)
This data sheet summarizes the features of the MCP9700/9700A and
MCP9701/9701A. It provides essential information needed to develop software for
these devices.
MCP6001/2/4 Data Sheet (DS21733)
This data sheet summarizes the features of the MCP6001/2/4. It provides essential
information needed to develop software for these devices. The data sheet can be found
at http://ww1.microchip.com/downloads/en/DeviceDoc/21733h.pdf.
25LC1024 Data Sheet (DS22064)
This data sheet summarizes the features of the 25LC1024. It provides essential
information needed to develop software for this device.
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
© 2009 Microchip Technology Inc.
DS41344C-page 3
PIC18F4XK20 Starter Kit User’s Guide
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® IDE – The latest information on Microchip MPLAB IDE, the Windows®
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® II device programmers and the PICSTART®
Plus and PICkit™ 1 development programmers.
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 (March 2008)
• Initial Release of this Document.
Revision B (April 2008)
• Removed reference to OLED Data Sheet
Revision C (March 2009)
• Corrected reference to MCP6001/2/4 Data Sheet (DS21733) in the
Section “Recommended Reading”. Added Microchip web site link for this data
sheet.
DS41344C-page 4
© 2009 Microchip Technology Inc.
PIC18F4XK20 STARTER KIT
USER’S GUIDE
Chapter 1. PIC18F4XK20 Starter Kit Overview
The PIC18F4XK20 Starter Kit is a demonstration and development tool designed for
those getting started with microcontrollers or those looking to migrate to the new
PIC18F4XK20/2XK20 family. The board is designed for general purpose applications
and includes a variety of hardware to exercise microcontroller peripherals.
1.1
OVERVIEW
The PIC18F4XK20/2XK20 is a new family of microcontrollers that take advantage of
Microchip’s latest process technology. Among the most notable of the new features are:
• lower power consumption
• high-performance operation and
• low-cost
Several firmware demos that showcase some of the features are included, as well as
a PICkit™ 2 Development Programmer, which can be used to download the demos
onto the development board.
The hardware included on the board allows for development as well. The microcontroller
that is populated on the board, the PIC18F46K20, is the superset of the PIC18F4XK20/2XK20
family. Included on the board are various analog and digital circuitry used in
microcontroller applications, in addition to a header which breaks out all signal lines for
analysis or interfacing to external devices.
1.2
HIGHLIGHTS
This chapter discusses the features of the PIC18F4XK20 Starter Kit. Topics discussed
include:
•
•
•
•
•
1.3
PIC18F4XK20 Starter Kit Contents
PIC18F4XK20 System Management Layout
Powering the Demo Board
Quick Start Guide
Programming Lessons
PIC18F4XK20 STARTER KIT CONTENTS
The PIC18F4XK20 Starter Kit includes the following items:
• PIC18F4XK20 Starter Kit Board
• PIC18F4XK20 CD-ROM, which includes:
- PIC18F4XK20 Starter Kit User’s Guide
- PIC18F4XK20 Schematics and Layout
- Labs and Demo Software Source Code
- PIC18F4XK20/2XK20 Data Sheets
- 25LC1024 Data Sheet
• PICkit 2 Development Programmer
• Programming Lessons
© 2009 Microchip Technology Inc.
DS41344C-page 5
PIC18F4XK20 Starter Kit User’s Guide
If you are missing any part of the kit, please contact your nearest Microchip sales office
listed on the back of this publication.
1.4
PIC18F4XK20 STARTER KIT LAYOUT
The PIC18F4XK20 Starter Kit Board is populated with a PIC18F46K20 microcontroller.
In addition, the board is also populated with the following features/components:
•
•
•
•
•
•
•
•
•
•
•
•
•
•
128x64 Organic LED Display (SPI)
32.768 kHz External Oscillator (Timer1)
Analog Input Filtering and Gain Control into RE1 (1.4.1)
PWM Output Filtering from RC2 (1.4.2)
4 Push Buttons for User Interfacing
1 MCLR switch
8 LEDs mapped to PORTD
Potentiometer
1024 KB Serial EEPROM
PICtail™ daughter board header (breaks out all pins)
6-Pin ICSP™ programming capability header
6-Pin PICkit serial analyzer interface
Current measurement jumper
RJ-11 ICSP programming header
FIGURE 1-1:
STARTER KIT LAYOUT
PICkitTM 2 Interface
+5-12V Power
ICD2 Interface
PICkitTM Serial
Interface
PICtailTM Header
32 kHz xTAL
Audio/Analog IN with
Adjustable Gain
Audio/Analog
OUT
MCP9700
Temperature
Sensor
DS41344C-page 6
Serial EEPROM
O-LED
Display
Push Buttons and POT
© 2009 Microchip Technology Inc.
PIC18F4XK20 Starter Kit Overview
1.4.1
Analog Input Filtering Circuit
The analog filtering circuit is designed for use with an electret microphone. Electret
microphones typically require biasing, which is provided by MIC bias jumper, JP3. The
analog signal generated by a typical electret microphone has a peak to peak voltage in
the single millivolts range. The analog filtering circuit has a maximum gain of 300 which
can be controlled with the potentiometer labeled GAIN and is a 2nd order low-pass filter
with a cut-off frequency of 5 kHz. Jumper JP3 needs to be removed if the analog input
is provided by input test point.
1.4.2
PWM Filtering from RC2
The microcontroller output RC2 provides an active low pass filter that can be used to
generate analog signals. A high frequency PWM output from RC2 can be pulse width
modulated to vary the amplitude of the output signal.
1.4.3
PICtail™ Daughter Board Interface
The PICtail daughter board interface breaks out each pin of the microcontroller in
addition to providing +VDD and ground. The header is designed to be compatible with
existing PICtail daughter boards. Visit the Microchip web site to find more details on
PICtail daughter boards.
1.4.4
PICkit™ Serial Analyzer Connector
The PICkit serial analyzer connector provides pins for serial communication. The serial
communications lines are designed to be used with the PICkit serial analyzer, but are
also provided for general purpose communications as well. The Serial Communications
pinout is shown below:
FIGURE 1-2:
1.4.5
SERIAL COMMUNICATIONS PIN-OUT
1
2
3
4
5
6
TX
+5V
GND
SDA
SCL
RX
ICSP™ (In-Circuit Serial Programmer™) Connector
A 6-pin ICSP programming capability and RJ-11 connectors are provided for
programming the microcontroller. The PIC18F46K20 can be programmed through
these connectors using the PICkit 2 programmer in the MPLAB ICD 2.
Note:
© 2009 Microchip Technology Inc.
The programming voltage on the microcontroller VPP pin must be below 9V
according to the programming specification. Protection circuitry (8.2V
Zener with 820 Ohm series resistor) is in place to ensure that VPP does not
exceed programming specifications.
DS41344C-page 7
PIC18F4XK20 Starter Kit User’s Guide
1.4.6
Temperature Sensor
An MCP9700 temperature sensor is located on the board. The MCP9700 is an analog
temperature sensor that provides a linear voltage output versus temperature. The
voltage output of the temperature sensor is connected to the RE1 pin of the microcontroller.
1.4.7
25LC1024 Serial EEPROM
A Microchip 1024 Kbit serial reprogrammable Flash memory with both Flash and
byte-level serial EEPROM functions is provided.
The memory is accessed via a simple Serial Peripheral Interface (SPI) compatible
serial bus. The bus signals are a clock input plus separate data in and data out lines.
Access to the device is controlled by a Chip Select (CS) input on the microcontroller pin
RA6.
1.4.8
32.768 kHz Crystal
The 32.768 kHz tuning fork crystal is interfaced to the RC0/T1OSO and RC1/T1OSI
pins for use with the Timer1 peripheral.
1.4.9
128x64 OLED
The display provided on the development board is a 128x64 organic LED display. It
interfaces to the microcontroller via Serial Peripheral Interface (SPI). The controller on
the OLED is the SH1101A.
1.5
POWERING THE DEMO BOARD
The demonstration board can be powered in the following ways:
1. The board accepts a 2.5mm coaxial power connector in J3. Acceptable voltages
range from +5-12 VDC.
2. The PICkit 2 Development programmer can be used to provide power at connector P1. Do not exceed current of 100 mA on the board if the PICkit 2 is being used
to power the board.
3. The PICkit Serial Analyzer can be used to provide power at connector P2. Do not
exceed a current of 100 mA on the board if the PICkit Serial Analyzer is being
used to power the board.
1.6
QUICK START GUIDE
The PIC18F4XK20 Starter Kit is preloaded with demonstration firmware. The board
must be configured as described in this section in order to use the demonstration programs.
Board Setup
1. Close jumper JP1 labeled Current Jumper, JP3 labeled Mic Bias and JP2.
2. Connect a +5-12V power supply to connector J3 in the upper left portion of the
board.
1.6.1
Downloading Demonstration Software
The PIC18F4XK20 Starter Kit CD-ROM comes with 3 demonstration programs and 12
hands-on programming lessons. Using the PICkit 2 Development Programmer, demonstration firmware can be downloaded onto the demo board and the board can be
powered.
DS41344C-page 8
© 2009 Microchip Technology Inc.
PIC18F4XK20 Starter Kit Overview
1. Insert the included PIC18F4XK20 Demonstration Board CD into the CD-ROM
Drive.
2. Run the installation setup for MPLAB IDE.
3. Connect the PICkit 2 programmer to the Starter Kit board and computer.
4. Start the MPLAB IDE software.
5. Click File > Import.
FIGURE 1-3:
IMPORT
6. Browse to the CD-ROM drive directory Demos.
7. Select one of the several demos available (readme.txt in the Demos directory
will describe each demo) and click Open:
© 2009 Microchip Technology Inc.
DS41344C-page 9
PIC18F4XK20 Starter Kit User’s Guide
FIGURE 1-4:
DEMOS AVAILABLE
8. Click Programmer > Select Programmer > PICkit 2:
FIGURE 1-5:
9. To program, click Programmer > Program.
10. Click Programmer > Release from Reset to release the MCLR to run the
program.
1.7
PROGRAMMING LESSONS
The PIC18F4XK20 CD-ROM includes a variety of programming lessons designed for
use with the demonstration board. Insert the PIC18F4XK20 CD-ROM and browse to
the Lessons directory of the CD-ROM.
DS41344C-page 10
© 2009 Microchip Technology Inc.
PIC18F4XK20 STARTER KIT
USER’S GUIDE
Chapter 2. Troubleshooting
2.1
INTRODUCTION
This chapter describes common problems when using the PIC18F4XK20
Demonstration Board and their solutions.
2.1.1
The board does not power up.
Make sure that the green POWER LED has turned on. If the LED is not on, check to
see that the +9V power supply is properly connected.
2.1.2
Microcontroller is not executing code.
First check to make sure that the microcontroller has been programmed with the firmware that is intended to run. If the part is programmed, ensure that the current jumper
JP1 is in place.
2.1.3
The microcontroller will not program.
Check to make sure that the programmer/debugger is properly connected to the PC
and powered. Make sure that the board is also powered with the +9V power supply.
Programming can only occur when the current jumper JP1 is connected.
© 2009 Microchip Technology Inc.
DS41344C-page 11
PIC18F4XK20 Starter Kit User’s Guide
NOTES:
DS41344C-page 12
© 2009 Microchip Technology Inc.
PIC18F4XK20 STARTER KIT
USER’S GUIDE
Appendix A. Board Schematics
A.1
INTRODUCTION
This appendix contains the PIC18F4XK20 demonstration board schematics, broken
down into 5 sheets, as follows:
PIC18F4XK20 DEMO BOARD SCHEMATIC DIAGRAM (SHEET 1 OF 5)
+3.3V
RD0
RC3/SCK
RC1
RC2
RC5/MOSI
RD3
C3
12 pF
X1
32 kHz
R4
220K
RC6
RC5
RC4
RD3
RD2
RD1
RD0
RC3
RC2
RC1
NC
44
43
42
41
40
39
38
37
36
35
34
RC4/MISO
C4
12 pF
1
2
3
4
5
6
RC7/RX
RD4
RD5
RD6
RD7
RC7
RD4
RD5
RD6
RD7
VSS
VDD
RB0
RB1
RB2
RB3
NC
RC0
OSCO/RA3
OSCI/RA2
VSS
VDD
RE2
RE1
RE0
RA5
U1
PIC18F46K20-I/PT
RA4
VPP
VDD
GND
ICSPDAT
ICSPCLK
T1G
RC6/TX
USRT
P2
RX
+V
GND
NC
NC
TX
D1
3.9V
J1
1
3
5
7
9
11
13
15
17
19
21
23
25
27
RE2
RE3
RA7/OLED_NCS
RA6/SEE_NCS
RC7/RX
RC6/TX
RB7
RB6
RB5
RB4
RB3
RB2
RB1
RB0
D2
8.2
RA6/SEE_NCS
RA7/OLED_NCS
RE2
RE1
RE0
RA5/ND/C
RA4/NRES
RA5/ND/C
RA4/NRES
RA3
RC5/MOSI
RC4/MISO
RC3/SCK
RA0
RA1
RA2
RC0
RC1
RC2
+3.3V
+3.3V
J2
RD1
RD3
RD5
RD7
RE1
2
4
6
8
10
12
14
16
18
20
22
24
26
28
RD0
RD2
RD4
RD6
RE0
C5
1 uF
C6
1 uF
RA3
RA0
RA1
RA2
33
32
31
30
29
28
27
26
25
24
23
TM
1
2
3
4
5
6
TP2 GND
© 2009 Microchip Technology Inc.
RB7
RE3
TP1 +V
RB5
+3.3V
RB4
12
13
14
15
16
17
18
19
20
21
22
NC
NC
RB4
RB5
RB6
RB7
MCLR
RA0
RA1
RA2
RA3
RB0
RB1
RB2
RB3
1
2
3
4
5
6
7
8
9
10
11
RC0
ICSP
P1
RC7/RX
R2
820
BZX84B8V2LT1
A
K
C2
0.1 uF
RC6/TX
C1
0.1 uF
Current Sense
RD2
RD1
JP1
+3.3V
R1
820
BZX84B8V2LT1
A
K
FIGURE A-1:
DS41344C-page 13
PIC18F4XK20 Starter Kit User’s Guide
FIGURE A-2:
PIC18F4XK20 DEMO BOARD SCHEMATIC DIAGRAM (SHEET 2 OF 5)
MCP9700-I/LT
DS41344C-page 14
© 2009 Microchip Technology Inc.
Board Schematics
FIGURE A-3:
PIC18F4XK20 DEMO BOARD SCHEMATIC DIAGRAM (SHEET 3 OF 5)
6
2
3
7
A
1
5
MCP6022
MCP6022
pF
VDC
© 2009 Microchip Technology Inc.
DS41344C-page 15
PIC18F4XK20 Starter Kit User’s Guide
FIGURE A-4:
PIC18F4XK20 DEMO BOARD SCHEMATIC DIAGRAM (SHEET 4 OF 5)
2
3
A
1
MCP6022
6
7
5
MCP6022
DS41344C-page 16
© 2009 Microchip Technology Inc.
Board Schematics
FIGURE A-5:
PIC18F4XK20 DEMO BOARD SCHEMATIC DIAGRAM (SHEET 5 OF 5)
G1
S1
D1
© 2009 Microchip Technology Inc.
DS41344C-page 17
PIC18F4XK20 Starter Kit User’s Guide
NOTES:
DS41344C-page 18
© 2009 Microchip Technology Inc.
PIC18F4XK20 Starter Kit User’s Guide
NOTES:
© 2009 Microchip Technology Inc.
DS41344C-page 19
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DS41344C-page 20
© 2009 Microchip Technology Inc.