Microchip Technology PICkit 3 Starter Kit DV164130 DV164130 User Manual

Product codes
DV164130
Page of 98
Theory of Operation
© 2009 Microchip Technology Inc.
DS51795A-page 17
2.4
COMMUNICATION CONNECTIONS
2.4.1
Communication Target Connections
2.4.1.1
USING SINGLE IN-LINE CONNECTOR
Use the 6-pin in-line connector between the PICkit 3 programmer/debugger and the 
target board connector. See Figure 2-1. Also see Table 2-1 and 
Section 10.6 “Standard Communication Hardware”.
2.4.1.2
USING AN ADAPTER
Use the AC164110 adapter between the PICkit 3 programmer/debugger and the target 
device with the modular interface (six conductor) cable. The pin numbering for the 
connector is shown from the bottom of the target PC board in Figure 2-3. 
FIGURE 2-3:
STANDARD RJ-11 CONNECTION AT TARGET
2.4.2
Target Connection Circuitry
Figure 2-4 shows the interconnections of the PICkit 3 programmer/debugger to the 
connector on the target board. The diagram also shows the wiring from the connector 
to a device on the target PC board. A pull-up resistor (usually around 10 k
Ω) is 
recommended to be connected from the V
PP
/MCLR line to V
DD
 so that the line may be 
strobed low to reset the device.
TABLE 2-1:
TARGET CONNECTOR PINOUT
Connector Pin
Microcontroller Pin
1
MCLR/V
PP
2
V
DD
3
Ground
4
PDG (ICSPDAT)
5
PGC (ICSPCLK)
6
LVP
Note:
Cable connections at the debugger and target are mirror images of each 
other, i.e., pin 1 on one end of the cable is connected to pin 6 on the other 
end of the cable. See Section 10.6.2.3 “Modular Cable Specification”.
1
2
3
4
5
6
Target
Connector
Target
Bottom Side
PC Board
V
PP
/MCLR
Vss
PGC
V
DD
PGD
LVP