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Getting Started
2.5
CONNECTING TO HOST PC FOR RS-232 COMMUNICATION
As shown in Figure 2-9, there are two ways to connect a PC to the PICDEM PIC18
Explorer Demonstration Board.
? Via the USB Port
? Via the DB9 Pin (RS-232 Port)
FIGURE 2-9:
BOARD TO PC CONNECTION
Board
Host
PC
USB
PIC18LF2450
Microcontroller
Tx
Rx
J13
X 1
Tx
Main
PIC ?
MCU
Rx
UART Transceiver
Tx
X 2
DB9
Rx
2.5.1
PC Connection Via DB9 Pin
To connect the PICDEM PIC18 Explorer Demonstration Board to a host PC via the
nine-pin DB9 connector, set jumper J13, as shown in the first illustration in Figure 2-10.
This routes the main microcontroller ’s communications through a transceiver.
FIGURE 2-10:
JUMPER J13 – SETTINGS FOR RS-232 OR USB
? 2008 Microchip Technology Inc.
Connecting to
Nine-Pin RS-232 Port
Connecting to
USB Port
DS51721B-page 19
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