51795B datasheet(71/100 Pages) MICROCHIP

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Hardware Specification

 2010 Microchip Technology Inc.

DS51795B-page 71

A.6

STANDARD COMMUNICATION HARDWARE

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).

A.6.1

Standard Communication

The standard communication is the main interface to the target processor. It contains

the connections to the high voltage (VPP), VDD sense lines, and clock and data

connections required for programming and connecting with the target devices.

The VPP 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 VDD 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

FIGURE A-1:

6-PIN STANDARD PINOUT

Note: 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.

Name

Function

1MCLR/VPP

Power

2VDD_TGT

Power on target

GND

Ground

PGD (ICSPDAT) Standard Com Data

PGC (ICSPCLK) Standard Com Clock

PGM (LVP)

Low Voltage Programming

Bottom of

Target Board

Standard Socket

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