DV164121 Microchip Technology, DV164121 Datasheet - Page 56

• Manufacturer Part Number: DV164121
• Description: KIT PICKIT 2 DEBUG EXPRESS
• Manufacturer: Microchip Technology
• Series: PICkit™ 2r
• Type: Microcontrollerr

Specifications of DV164121

• Contents: Board, PICkit™ 2 Programmer, Cable, CD
• Processor To Be Evaluated: PIC family
• Data Bus Width: 8 bit, 16 bit, 32 bit
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With/related Products: PIC Micro® MCU
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

PICkit™ 2 User’s Guide
There are a few USB controller chipsets that appear to cause lockup problems with the
PICkit 2, which seem to be more common in laptops. This can usually be worked
around by connecting a USB hub between the PC and the PICkit 2 unit, or using a USB
Cardbus adapter. Using a USB hub with an external power supply is recommended.
Low Pin Count Demo Board Push Button Not Working
Question
When I run the Low Pin Count Demo Board Lessons, why doesn’t the push button
work?
Answer
When programming the lessons from within MPLAB IDE, the IDE always maintains an
output voltage on the PICkit 2 MCLR-V
pin. On the Low Pin Count and 28-pin Demo
PP
Boards, the push button signal is connected to the MCLR signal. The PICkit 2 output
interferes with the push button signal.
Use the PICkit 2 Programmer software application to program and run the Low Pin
Count Demo Board Lessons.
Additionally, future versions of the MPLAB IDE will optionally allow the MCLR-V
pin
PP
to be tri-stated when the device is “Released from Reset”. Check
Programmer>Settings for this option. Note that this option would not apply during
debugging.
Using the Demo Board Lessons
Question
Where are the included lessons? Is there any documentation on them?
Answer
The Starter Kit and Debug Express kit lessons may be installed from the included PICkit
2 CD-ROM. The lessons will be installed to the local hard drive under
C:\Pk2 Lessons\.
The documentation for the lesson projects is in the user’s guide for the included demo
Board. For the Starter Kit, see the “Low Pin Count Demo Board User’s Guide”
(DS51556). For the Debug Express Kit, see the “44-Pin Demo Board User’s Guide”
(DS41296). Both of these documents may be opened from the PICkit 2 Programmer
Help menu.
Programming Fails on Configuration
Question
Why does programming a device always fail on the Configuration Word(s), after which
PICkit 2 won’t recognize the device?
Answer
This may be caused by a Configuration setting or program code that affects the ICSP
PGD and PGC pins. This interference can prevent the target PIC MCU from entering
programming mode.
Check the menu option Tools>Use VPP First Program Entry when attempting a pro-
gramming operation on these devices. This program mode entry will usually get around
the problem, but it requires that the target device be powered from the PICkit 2 unit V
DD
pin.
© 2008 Microchip Technology Inc.
DS51553E-page 52