DS51795A Datasheet, PDF (65/98 Pages) Microchip Technology – PICkit™ 3 Programmer/Debugger

Hardware Specification
10.6 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.
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.
For more on available header boards, see the “Header Board Specification”
(DS51292).
10.6.1 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 10-1:
6-PIN STANDARD PINOUT
Standard Socket
246
1 35
Bottom of
Target Board
Pin
Name
Function
1 MCLR/VPP
Power
2 VDD_TGT
Power on target
3 GND
Ground
4 PGD (ICSPDAT) Standard Com Data
5 PGC (ICSPCLK) Standard Com Clock
6 LVP
Low Voltage Programming
© 2009 Microchip Technology Inc.
DS51795A-page 61