Microchip Technology PICkit 3 Starter Kit DV164130 DV164130 User Manual

© 2009 Microchip Technology Inc.

DS51795A-page 61

For standard debugger communication with a target (Section 2.3 “Debugger to 
Target Communication”, “Standard ICSP Device Communication“), use an adapter 
with an RJ-11 connector.

To use this type of communication with a header board, you may need a device-specific 
Processor Pak, which includes an 8-pin connector header board containing the desired 
ICE/ICD device and a standard adapter board.

For more on available header boards, see the “Header Board Specification” 
(DS51292).

The standard communication is the main interface to the target processor. It contains 
the connections to the high voltage (V

PP

), V

DD

 sense lines, and clock and data 

connections required for programming and connecting with the target devices.

The V

PP

 high-voltage lines can produce a variable voltage that can swing from 1.8 to 

14 volts to satisfy the voltage requirements for the specific emulation processor. 

The V

DD

 sense connection draws current from the target processor. 

The clock and data connections are interfaces with the following characteristics:

• Clock and data signals are in high-impedance mode (even when no power is 

applied to the PICkit 3 programmer/debugger system)

• Clock and data signals are protected from high voltages caused by faulty targets 

systems, or improper connections

• Clock and data signals are protected from high current caused from electrical 

shorts in prototype or target systems

Older header boards used a 6-pin (RJ-11) connector instead of an 8-pin 
connector, so these headers may be connected directly to the debugger.

1

MCLR/V

PP

Power

2

V

DD

_TGT

Power on target

3

GND

Ground

4

PGD (ICSPDAT) Standard Com Data

5

PGC (ICSPCLK) Standard Com Clock

6

LVP

Low Voltage Programming

Bottom of
Target Board

Standard Socket

T

a

rget

 Devic

e

or PI

M