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PICkit? 2 User’s Guide
4.3
INSTALLING THE HARDWARE AND SOFTWARE
Install the PICkit 2 hardware as specified in Section 2.2 “Installing the PICkit 2
Hardware” .
Note:
Debug Express requires 4.7k Ohm pull down resistors on ICSPCLK and
ICSPDAT. Newer PICkit 2 units have a Red button and have the pull downs
internally. Older PICkit 2 units have a Black button and require that the pull
downs be added on the target board.
Obtain a copy of the MPLAB IDE software application from the Microchip website or
CD-ROM enclosed with the kit and install it as directed.
Note:
Debug Express requires MPLAB IDE version 7.50 or later.
4.4
USING PICKIT 2 DEBUG EXPRESS
4.4.1
Determining Device Support
For a list of current devices supported by PICkit 2 Debug Express, see the “ Readme
for PICkit 2.htm ” file in the “Readmes” subdirectory of the MPLAB IDE installation
directory.
When selecting a device as discussed in Section 4.5 “Debug Express Tutorial” , the
“Select Device” dialog shown in Figure 4-11 shows the level of support for the selected
device by Debug Express. In the “Debuggers” section of the dialog, the color of the
circle next to “PICkit 2” indicates the support level:
Red – The device is not currently supported by PICkit 2 Debug Express
Yellow – The device has beta support in PICkit 2 Debug Express
Green – The device has full support in PICkit 2 Debug Express
Beta support indicates that the device is supported, but has not yet undergone internal
certification testing by Microchip.
4.4.2
Reserved Resources
Due to the built-in in-circuit debugging capability of ICD devices and the ICSP function
offered by the debugger, the PICkit 2 Debug Express uses some on-chip resources
when debugging. It also uses program memory and file register locations in the target
device during debugging. These locations are not available for use by user code. In
MPLAB IDE, registers marked with an “R” in register displays represent reserved
registers.
For information on device resources that are needed for in-circuit debugging, please
refer to the MPLAB ICD 2 Help, found in the MPLAB IDE under Help>Topics . The
device reserved resource information found under “Resources Used By MPLAB ICD 2”
is the same for the PICkit 2 Debug Express.
4.4.3
Using an ICD Header
All Baseline and some Mid-Range PIC microcontrollers require a special –ICD device
mounted on a debug header circuit board to enable the debugging feature. For a list of
these devices and the required ICD header board part number, please see the “ Header
Board Specification ” (DS51292). The Header Board Specification is included on the
PICkit 2 CD-ROM, and is available online at www.microchip.com.
DS51553E-page 32
? 2008 Microchip Technology Inc.
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