DS51795A Datasheet, PDF (29/98 Pages) Microchip Technology – PICkit™ 3 Programmer/Debugger

FIGURE 3-2:
USING AN ICD HEADER BOARD
Installation
Many Mid-Range PIC microcontrollers and all PIC18 and 16-bit PIC microcontroller
devices do not require an ICD header and can be debugged directly through the ICSP
programming connections.
3.4.4 Powering the Target
These are configuration essentials:
• When using the USB connection, PICkit 3 can be powered from the PC but it can
only provide a limited amount of current, up to 30 mA, at VDD from 1.8-5V to a
small target board.
• The desired method is for the target to provide VDD since it can provide a higher
current. The additional benefit is that plug-and-play target detection facility is
inherited, i.e., MPLAB IDE will let you know in the Output window when it has
detected the target and has detected the device.
Note: The target voltage is only used for powering up the drivers for the ICSP
interface; the target voltage does not power up the PICkit 3. The PICkit 3
power is derived strictly from the USB port.
If you have not already done so, connect the PICkit 3 to the target using the appropriate
cables (see Section 3.3 “Connecting the Target”). Then power the target. If you are
powering the target through the PICkit 3, see Section 9.5.8 “Settings Dialog, Power
Tab” for instructions.
3.5 SETTING UP MPLAB IDE
Once the hardware is connected and powered, MPLAB IDE may be set up for use with
the PICkit 3 programmer/debugger.
On some devices, you must select the communications channel in the Configuration
bits, e.g., PGC1/EMUC1 and PGD1/EMUD1. Make sure the pins selected here are the
same ones physically connected to the device.
For more on setting up a project and getting started with PICkit 3, see Chapter
4. “General Setup”.
© 2009 Microchip Technology Inc.
DS51795A-page 25