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Theory of Operation
2.4
COMMUNICATION CONNECTIONS
2.4.1
2.4.1.1
Communication Target Connections
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” .
TABLE 2-1:
TARGET CONNECTOR PINOUT
Connector Pin
1
2
3
4
5
6
Microcontroller Pin
MCLR/V PP
V DD
Ground
PDG (ICSPDAT)
PGC (ICSPCLK)
LVP
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.
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” .
FIGURE 2-3:
STANDARD RJ-11 CONNECTION AT TARGET
Target
Connector
PGD
V DD
V PP /MCLR
2 4 6
1 3 5
Vss
LVP
PGC
Target
PC Board
Bottom Side
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.
? 2009 Microchip Technology Inc.
DS51795A-page 17
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