Curiosity HPC Dev Brd Users Guide Datasheet by Microchip Technology
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6‘
MICRDCHIP
 
 
 
 2016 Microchip Technology Inc.  DS40001856A
Curiosity High Pin Count (HPC)
Development Board
User’s Guide
 
 
 
YSTEM
 
 
DS40001856A-page 2   2016 Microchip Technology Inc.
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and may be superseded by updates.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 unless otherwise stated.
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.
Microchip received ISO/TS-16949:2009 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.
QUALITY MANAGEMENT  S
YSTEM 
CERTIFIED BY DNV 
== ISO/TS 16949 == 
Trademarks
The Microchip name and logo, the Microchip logo, AnyRate, 
dsPIC, FlashFlex, flexPWR, Heldo, JukeBlox, KeeLoq, 
KeeLoq logo, Kleer, LANCheck, LINK MD, MediaLB, MOST, 
MOST logo, MPLAB, OptoLyzer, PIC, PICSTART, PIC32 logo, 
RightTouch, SpyNIC, SST, SST Logo, SuperFlash and UNI/O 
are registered trademarks of Microchip Technology 
Incorporated in the U.S.A. and other countries.
ClockWorks, The Embedded Control Solutions Company, 
ETHERSYNCH, Hyper Speed Control, HyperLight Load, 
IntelliMOS, mTouch, Precision Edge, and QUIET-WIRE are 
registered trademarks of Microchip Technology Incorporated 
in the U.S.A.
Analog-for-the-Digital Age, Any Capacitor, AnyIn, AnyOut, 
BodyCom, chipKIT, chipKIT logo, CodeGuard, dsPICDEM, 
dsPICDEM.net, Dynamic Average Matching, DAM, ECAN, 
EtherGREEN, In-Circuit Serial Programming, ICSP, Inter-Chip 
Connectivity, JitterBlocker, KleerNet, KleerNet logo, MiWi, 
motorBench, MPASM, MPF, MPLAB Certified logo, MPLIB, 
MPLINK, MultiTRAK, NetDetach, Omniscient Code 
Generation, PICDEM, PICDEM.net, PICkit, PICtail, 
PureSilicon, RightTouch logo, REAL ICE, Ripple Blocker, 
Serial Quad I/O, SQI, SuperSwitcher, SuperSwitcher II, Total 
Endurance, TSHARC, USBCheck, VariSense, ViewSpan, 
WiperLock, Wireless DNA, 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.
Silicon Storage Technology is a registered trademark of 
Microchip Technology Inc. in other countries.
GestIC is a registered trademark of Microchip Technology 
Germany II GmbH & Co. KG, a subsidiary of Microchip 
Technology Inc., in other countries. 
All other trademarks mentioned herein are property of their 
respective companies.
© 2016, Microchip Technology Incorporated, Printed in the 
U.S.A., All Rights Reserved. 
ISBN: 978-1-5224-0824-6
EU Declaration ofConformitv
Manufacturer: Microchip Technology Inc.
2355 W. Chandler Blvd.
Chandler, Arizona, 85224-6199
USA
This declaration of conformity is issued by the manufacturer.
The development/evaluation tool is designed to be used for research and development in a laboratory
environment. This development/evaluation tool is not a Finished Appliance, nor is it intended for
incorporation into Finished Appliances that are made commercially available as single functional units to
end users under EU EMC Directive 2004/108/EC and as supported by the European Commission’s Guide
for the EMC Directive 2004/108/EC (s"‘ February 2010),
This development/evaluation tool complies with EU RoHSZ Directive 2011/65/EU.
This development/evaluation tool, when incorporating wireless and radio-telecom functionality, is in
compliance with the essential requirement and other relevant provisions of the R&Tl'E Directive
1999/5/EC and the FCC rules as stated in the declaration of conformity provided in the module
datasheet and the module product page available at www,microchip.com.
For information regarding the exclusive, limited warranties applicable to Microchip products, please see
Microchip’s standard terms and conditions of sale, which are printed on our sales documentation and
available at www.microchipcom‘
Signed for and on behalf of Microchip Technology Inc. at Chandler, Arizona, USA
( 2 ~
Derek Carlson ' Date
VP Development Tools
 
 2016 Microchip Technology Inc. DS40001856A-page 3
Object of Declaration: Curiosity High Pin Count Development Board

Curiosity High Pin Count Development Board User’s Guide
DS40001856A-page 4  2016 Microchip Technology Inc.
NOTES:
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CURIOSITY HIGH PIN COUNT DEVELOPMENT
BOARD USER’S GUIDE
 2016 Microchip Technology Inc. DS40001856A-page 5
Table of Contents
Preface ........................................................................................................................... 7
Introduction............................................................................................................ 7
Document Layout .................................................................................................. 7
Conventions Used in this Guide ............................................................................ 8
Recommended Reading........................................................................................ 9
The Microchip Website.......................................................................................... 9
Development Systems Customer Change Notification Service ............................ 9
Customer Support ............................................................................................... 10
Revision History .................................................................................................. 10
Chapter 1. Introduction to Curiosity High Pin Count (HPC)
1.1 Curiosity High Pin Count (HPC) Development Board Kit Contents .............. 11
Chapter 2. Getting Started
2.1 Programming the Curiosity HPC Development Board  ................................. 13
2.1.1 Programming Using MPLAB® X ................................................................ 13
2.1.2 Programming using MPLAB® Xpress ........................................................ 17
Chapter 3. Troubleshooting
3.1 The MCU Will Not Program Using The PKOB  ............................................. 23
Appendix A. Schematic
A.1 Curiosity HPC Development Board Schematic ............................................ 25
Appendix B. General Notes
B.1 microBus™ Clicks ........................................................................................ 27
B.2 Solder Blob Jumper  ..................................................................................... 27
Worldwide Sales and Service  ....................................................................................29

Curiosity High Pin Count Development Board User’s Guide
DS40001856A-page 6  2016 Microchip Technology Inc.
NOTES:
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 2016 Microchip Technology Inc. DS40001856A-page 7
CURIOSITY HIGH PIN COUNT DEVELOPMENT
BOARD USER’S GUIDE
Preface
INTRODUCTION
This chapter contains general information that will be useful to know before using the 
Curiosity HPC Development Board. Items discussed in this chapter include:
• Document Layout
• Conventions Used in this Guide
• Recommended Reading
• The Microchip Website
• Development Systems Customer Change Notification Service
• Customer Support
• Revision History
DOCUMENT LAYOUT
This document describes how to use the Curiosity HPC Development Board as a 
development tool to emulate and debug firmware on a target board. The document is 
organized as follows:
•Chapter 1. “Introduction to Curiosity High Pin Count (HPC)” – This chapter 
contains general information regarding the Curiosity HPC Development Board kit 
contents, layout and power source.
•Chapter 2. “Getting Started” – This chapter offers information on how to 
program the Curiosity HPC Development Board.
•Chapter 3. “Troubleshooting” – Consult this chapter for troubleshooting 
information.
•Appendix A. “Schematic” – This appendix lists the Curiosity HPC Development 
Board schematic.
•Appendix B. “General Notes” – Refer to this appendix for general notes on 
using the Click module sockets and the solder blob jumpers.
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 website 
(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 online help. 
Select the Help menu, and then Topics to open a list of available online help files.
 
 
 
 
 
 
 
 
 
 
 
 
FIIe>Sa vs
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Curiosity High Pin Count Development Board User’s Guide
DS40001856A-page 8  2016 Microchip Technology Inc.
CONVENTIONS USED IN THIS GUIDE 
This manual uses the following documentation conventions:
DOCUMENT CONVENTIONS
Description Represents Examples
Arial font:
Italic characters Referenced books MPLAB IDE User’s Guide
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 “Save project before build”
Underlined, italic text with 
right angle bracket A menu path File>Save
Bold characters A dialog button Click OK
A tab Click the Power tab
N‘Rnnnn A number in verilog format, 
where N is the total number of 
digits, R is the radix and n is a 
digit.
4‘b0010, 2‘hF1
Text in angle brackets < > A key on the keyboard Press <Enter>, <F1>
Courier New font:
Plain Courier New Sample source code #define START
Filenames autoexec.bat
File paths c:\mcc18\h
Keywords _asm, _endasm, static
Command-line options -Opa+, -Opa-
Bit values 0, 1
Constants 0xFF, ‘A’
Italic Courier New A variable argument file.o, where file can be 
any valid filename
Square brackets [ ] Optional arguments mcc18 [options] file 
[options]
Curly brackets and pipe 
character: { | } Choice of mutually exclusive 
arguments; an OR selection errorlevel {0|1}
Ellipses... Replaces repeated text var_name [, 
var_name...]
Represents code supplied by 
user void main (void)
{ ...
}

Preface
 2016 Microchip Technology Inc. DS40001856A-page 9
RECOMMENDED READING
This user’s guide describes how to use the Curiosity HPC Development Board. For the 
latest information on using other tools, refer to the MPLAB® X IDE home page: 
www.microchip.com/mplabx/. This resource page contains updated documentation, 
downloads and links to other MPLAB X compatible tools, plug-ins and much more.
THE MICROCHIP WEBSITE
Microchip provides online support via our website at www.microchip.com. This website 
is used as a means to make files and information easily available to customers. 
Accessible by using your favorite Internet browser, the website contains the following 
information:
•Product Support – Data sheets and errata, application notes, sample programs 
and labs, design resources, user’s guides and hardware support documents, 
latest software releases and archived software
Curiosity Development Board-specific product support can be accessed via our 
website at www.microchip.com/curiosity.
•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
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 website 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, assemblers, linkers 
and other language tools. These include all MPLAB C compilers; all MPLAB 
assemblers (including MPASM™ assembler); all MPLAB linkers (including 
MPLINK™ object linker); and all MPLAB librarians (including MPLIB™ object 
librarian).
•Emulators – The latest information on Microchip in-circuit emulators.This 
includes the MPLAB REAL ICE™ and MPLAB ICE 2000 in-circuit emulators.
•In-Circuit Debuggers – The latest information on the Microchip in-circuit 
debuggers. This includes MPLAB ICD 3 in-circuit debuggers and PICkit™ 3 
debug express.
•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 IDE Project Manager, MPLAB Editor and 
MPLAB SIM simulator, as well as general editing and debugging features.
•Programmers – The latest information on Microchip programmers. These include 
production programmers such as MPLAB REAL ICE in-circuit emulator, MPLAB 
ICD 3 in-circuit debugger and MPLAB PM3 device programmers. Also included 
are nonproduction development programmers such as PICSTART® Plus and 
PICkit 2 and 3.

Curiosity High Pin Count Development Board User’s Guide
DS40001856A-page 10  2016 Microchip Technology Inc.
CUSTOMER SUPPORT
Users of Microchip products can receive assistance through several channels:
• Distributor or Representative
• Local Sales Office
• Field Application Engineer (FAE)
• Technical Support
Customers should contact their distributor, representative or field application engineer 
(FAE) for support. Local sales offices are also available to help customers.
Technical support is available through the website at: 
www.microchip.com/support.
REVISION HISTORY
Revision A (July 2016)
Initial release of this document.
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 2016 Microchip Technology Inc. DS40001856A-page 11
CURIOSITY HIGH PIN COUNT DEVELOPMENT
BOARD USER’S GUIDE
Chapter 1.  Introduction to Curiosity High Pin Count (HPC) 
The Curiosity High Pin Count (HPC) Development Board supports Microchip’s 28- and 
40-pin 8-bit PIC® MCUs. Two unique PDIP sockets are surrounded by dual-row 
expansion headers, which allow for connectivity to all pins on the PIC MCUs. 
Programming/debugging is accomplished through the PICkit™ On Board (PKOB), 
eliminating the need for an external programming/debugging tool. The development 
board includes a set of four indication LEDs, a potentiometer, and push-button 
switches. Additionally, the Curiosity HPC Board integrates two MikroElektronika 
microBUS™ sockets, which accommodate a variety of plug-in Click™ Board modules 
that can be used for application development.
1.1 CURIOSITY HIGH PIN COUNT (HPC) DEVELOPMENT BOARD KIT 
CONTENTS
The Curiosity High Pin Count (HPC) Development Board kit contains the following: 
• Curiosity High Pin Count (HPC) Development Board 
• Quick Start Guide
• PIC16F18875 MCU
 
 
 
 
 
 
 
 
DS40001856A-page 12  2016 Microchip Technology Inc.
Curiosity High Pin Count Development Board User’s Guide
FIGURE 1-1: HPC DEVELOPMENT BOARD
1
2
345
4
67
891011
1. USB micro connector
2. 3.3/5V power jumper
3. Master Clear Reset button
4. Dual-row expansion headers
5. PIC MCU socket for 28-pin microcontroller
6. PIC MCU socket for 40-pin microcontroller
7. mikroBUS Click Board socket 1
8. mikroBUS Click Board socket 2
9. Push button SW2
10. Push button SW1
11. Potentiometer
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 2016 Microchip Technology Inc. DS40001856A-page 13
CURIOSITY HIGH PIN COUNT DEVELOPMENT
BOARD USER’S GUIDE
Chapter 2.  Getting Started
The Curiosity HPC Development Board can be used with either MPLAB® X Integrated 
Development Environment (IDE, version 3.0 or higher) or MPLAB® Xpress IDE; both 
IDEs are available for free at www.microchip.com. 
The Curiosity HPC Development Board contains a PICkit On Board (PKOB) which 
allows for both low-voltage programming and low-voltage in-circuit debugging for all 
supported devices. When used with the MPLAB IDE, in-circuit debugging allows the 
user to run, modify, and troubleshoot their custom software and hardware quickly, 
without the need for additional debugging tools.
2.1 PROGRAMMING THE CURIOSITY HPC DEVELOPMENT BOARD
Programming the Curiosity HPC Development Board can be accomplished through 
one of the two following ways: either through MPLAB X (version 3.30 or higher), or 
through MPLAB Xpress.
2.1.1 Programming Using MPLAB® X
1. Connect the Curiosity HPC Board to the computer using the on-board micro-USB 
connector.
2. Open MPLAB X and either create a new project or open an existing one.
3. Click on the Project Properties icon located in the project’s Dashboard window 
(as seen in Figure 2-1). Alternatively, the Project Properties window can be 
opened by clicking on File > Project Properties, or by right-clicking on the project 
name in the Projects window and clicking Properties.
Note: The Curiosity HPC Board must be programmed using Low-Voltage 
Programming (LVP). The LVP bit of the Configuration Word(s) must be set 
(LVP = ON or ‘1’).
 
 
 
 
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DS40001856A-page 14  2016 Microchip Technology Inc.
Curiosity High Pin Count Development Board User’s Guide
FIGURE 2-1: PROJECT PROPERTIES BUTTON
4. The Project Properties window will open. This window allows for the selection of 
the programming tool, compiler, and PIC MCU. MPLAB X refers to the Curiosity 
HPC Board as ‘Starter Kits (PKOB)’, with ‘Curiosity’ listed below in the Hardware 
Tool selection window. Click on Curiosity to select the Curiosity HPC Board, 
then click the Apply button (as seen in Figure 2-2).
 
 
 
 
 
 
 
 
   
   
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Getting Started
 2016 Microchip Technology Inc. DS40001856A-page 15
FIGURE 2-2: SELECTING THE CURIOSITY HPC DEVELOPMENT BOARD 
5. In the upper left-hand corner of the Project Properties window, click on Starter 
Kits (PKOB). The window will now show the configuration options for the PKOB 
programmer, as shown in Figure 2-3.
FIGURE 2-3: PROGRAM OPTIONS FOR THE PICkit™ ON BOARD (PKOB)
 
 
 
 
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DS40001856A-page 16  2016 Microchip Technology Inc.
Curiosity High Pin Count Development Board User’s Guide
6. In the Option categories drop-down menu, select Program Options; ensure that 
the Enable Low Voltage Programming checkbox is checked (Figure 2-4). This 
option should go default to checked, which ensures low-voltage programming. 
Click the OK button. The Curiosity HPC Board is now ready to be programmed.
FIGURE 2-4: ENSURE LOW-VOLTAGE PROGRAMMING IS ENABLED
7. Once the project is ready to be programmed, simply click on the Make and 
Program Device button, and MPLAB will build and compile the code and 
program the PIC device, as displayed in Figure 2-5.
FIGURE 2-5: DEVICE PROGRAMMING
 
 
 
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‘®h"‘efi‘>Getting Started
 2016 Microchip Technology Inc. DS40001856A-page 17
2.1.2 Programming using MPLAB® Xpress
1. Connect the Curiosity HPC Board to the computer using the on-board micro-USB 
connector.
2. Type the link to the MPLAB Xpress IDE (www.mplabxpress.microchip.com) into 
a browser window. 
3. Create a new project or open an existing project.
4. At the very bottom of the MPLAB Xpress window, click on the label USB Bridge 
Disconnected (Figure 2-6); a new Manage USB Bridge window will open.
FIGURE 2-6:  CONNECTING THE USB BRIDGE
 
 
 
 
  
  
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DS40001856A-page 18  2016 Microchip Technology Inc.
Curiosity High Pin Count Development Board User’s Guide
5. The new window configures the USB connection between the computer and the 
Curiosity HPC Board (Figure 2-7). Step 1 indicates that the latest Java Runtime 
Environment must be installed, allowing the user to download and install the 
latest version. Step 2 opens the bridge tool; click on the Download USB Bridge 
Tool button to download the bridge tool. A new window, MPLAB Xpress USB 
Bridge will appear, and may ask for the unique token found in Step 3 in the 
Manage USB Bridge window. Copy and paste the token into the USB Bridge tool. 
Once connected, the Bridge tool will show the connection and the words 
“Everything is looking good.” will appear (Figure 2-8). It is important to note that 
the Bridge Tool window must remain open while working on the project. Click the 
OK button in the Manage USB Bridge window.
FIGURE 2-7:  MANAGE USB BRIDGE WINDOW 
FIGURE 2-8:  MPLAB® Xpress USB BRIDGE WINDOW
 
 
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->Getting Started
 2016 Microchip Technology Inc. DS40001856A-page 19
6. Click on the Project Properties icon located in the project’s Dashboard window 
(Figure 2-9). Alternatively, the Project Properties window can be opened by 
clicking on File > Project Properties, or by right-clicking on the project name in 
the Projects window and clicking Project Properties.
FIGURE 2-9: SELECTING THE CURIOSITY HPC IN MPLAB® Xpress 
7. The Project Properties window will open; this window allows for the selection of 
the programming tool, compiler, and PIC MCU. MPLAB Xpress refers to the 
Curiosity HPC Board as ‘Curiosity’, with the Curiosity HPC serial number listed 
below in the Hardware Tool selection window. Click on the serial number to 
select the Curiosity HPC Board then click the Apply button (Figure 2-10).
 
 
 
 
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Curiosity High Pin Count Development Board User’s Guide
FIGURE 2-10: SELECTING THE CURIOSITY HPC IN MPLAB® Xpress 
8. In the upper left-hand corner of the Project Properties window, click on Starter 
Kit (PKOB). The window will now show the program options for the PKOB. 
Ensure that the Enable Low-Voltage Programming checkbox is checked 
(Figure 2-11) and press the OK button. The Curiosity HPC Board is now ready to 
be programmed.
FIGURE 2-11: ENSURING LOW-VOLTAGE PROGRAMMING IS ENABLED 
 
 
 
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Getting Started
 2016 Microchip Technology Inc. DS40001856A-page 21
9. Once the project is ready to be programmed, simply click on the Make and 
Program Device button and MPLAB Xpress will build and compile the code, and 
program the PIC device (Figure 2-12).
FIGURE 2-12: PIC® DEVICE PROGRAMMING 

DS40001856A-page 22  2016 Microchip Technology Inc.
Curiosity High Pin Count Development Board User’s Guide
NOTES:
Q
MICRDCHIP
 
 
 
 
 2016 Microchip Technology Inc. DS40001856A-page 23
CURIOSITY HIGH PIN COUNT DEVELOPMENT
BOARD USER’S GUIDE
Chapter 3.  Troubleshooting
This chapter discusses common operational issues and methods to resolve them.
3.1 THE MCU WILL NOT PROGRAM USING THE PKOB
The Curiosity HPC Development Board’s PICkit On Board (PKOB) uses low-voltage 
programming. Both MPLAB X and MPLAB Xpress set the Low-Voltage Programming 
(LVP) bit to a ‘1’, allowing low-voltage programming. 
1. When using custom firmware, the LVP bit must be set to ‘1’ in the Configuration 
Word. MPLAB X will not allow programming using the PKOB unless the bit is 
properly configured.
2. When using a PIC microcontroller (one not included with the Curiosity 
Development Board) that has already been programmed using high-voltage 
programming and the LVP bit is cleared (LVP = OFF or ‘0’), the device will not be 
recognized and cannot be programmed using the PKOB. Reprogramming the 
device can be achieved by one of the following two methods:
a) Connect a PICkit™ 3 Programmer to the PIC device dual-row expansion 
headers, ensuring the appropriate ICSP™, GND, and VDD connections are 
made. Configure MPLAB to use the PICkit 3 as the programmer, and ensure 
the LVP bit is set to ‘1’ in the Configuration Word. Reprogram the device.
b) Use an unprogrammed (blank) device and ensure the LVP bit is set to ‘1’ in 
the Configuration Word.

DS40001856A-page 24  2016 Microchip Technology Inc.
Curiosity High Pin Count Development Board User’s Guide
NOTES:
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 2016 Microchip Technology Inc. DS40001856A-page 25
CURIOSITY HIGH PIN COUNT DEVELOPMENT
BOARD USER’S GUIDE
Appendix A. Schematic
A.1 CURIOSITY HPC DEVELOPMENT BOARD SCHEMATIC
FIGURE A-1: CURIOSITY HPC DEVELOPMENT BOARD SCHEMATIC (1 OF 2)
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DS40001856A-page 26  2016 Microchip Technology Inc.
Curiosity High Pin Count Development Board User’s Guide
FIGURE A-2: CURIOSITY HPC DEVELOPMENT BOARD SCHEMATIC (2 OF 2)
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MICRDCHIP
 
 
 
 
 2016 Microchip Technology Inc. DS40001856A-page 27
CURIOSITY HIGH PIN COUNT DEVELOPMENT
BOARD USER’S GUIDE
Appendix B. General Notes
B.1 microBUS™ CLICKS
Module 1 is the main click socket, which is compatible with both 28-pin and 40-pin PIC 
devices. Module 2 is the secondary socket, and is fully compatible with a 40-pin PIC 
device. When using a 28-pin PIC device, Module 2 may be used with some Click 
modules, as long as the application does not use the SPI Chip Select (CS) line, the 
Reset (RST) line, or the PWM line dedicated to Module 2.
B.2 SOLDER BLOB JUMPER
Solder blob jumpers can be found on each Click module, push-button switch, LED, or 
potentiometer connection. This allows the user to utilize those pin connections for other 
applications.

DS40001856A-page 28  2016 Microchip Technology Inc.
Curiosity High Pin Count Development Board User’s Guide
NOTES:
6‘
‘MICRDCHIP
 
 
 
 
 2016 Microchip Technology Inc. DS40001856A-page 29
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