MCP212X Developer’s Daughter Board User’s Guide
2.4
MAKING A DEMO SYSTEM
The MCP212X Developer ’s Daughter Board requires a clock source and either a Host
Controller or a UART circuit. To demonstrate the board, the easiest method is to use
one of the compatible PICDEM? Demo Boards. A good choice is the PICDEM? HPC
Explorer Demo Board. This allows the MCP2120 device to interface to either:
? PIC18F8722’s EUSART1
? PIC18F8722’s EUSART2
? PICDEM? HPC Explorer Demo Board’s DB-9 connector (MAX3232C)
Additional instructions for performing a demo using the PICDEM? HPC Explorer
supplies instructions for performing a demo using the PICDEM? FS USB Demo
Board. Appendix F. “Configuring the HyperTerminal? Program” may be useful for
configuring the HyperTerminal program on the PC.
System Requirements
Table 2-3 shows the requirements for a system that can be used to demonstrate the
MCP212X Developer ’s Daughter Board.
System Setup
The system setup requires a PC with two serial communication ports (UARTs) and
HyperTerminal, the system application program. Two PICDEM? HPC Explorer Demo
Boards and two MCP212X Daughter Boards are then needed.
Note:
The MCP2122 may be installed in U4, or the MCP2120 may be installed in
U1. However, these devices should not be installed at the same time.
Figure 2-4 shows a system block diagram.
TABLE 2-3:
SYSTEM HARDWARE REQUIREMENTS
Qty
1
2
Hardware
PC with 2 serial ports
Serial Cables
Purpose
The PC will “talk” to each PICDEM? HPC Explorer Demo Board
(Encoder/Decoder board) via the serial port and an instance of the
HyperTerminal ? program. For consistency, COM 1 will be used to talk to the
“System #1” PICDEM? HPC Explorer Demo Board. Com 2 will be used to
communicate to the “System #2” PICDEM? HPC Explorer Demo Board.
To connect the PC serial ports to each PICDEM? HPC Explorer Demo
Board’s serial port.
2
PICDEM? HPC Explorer Boards The MCP212X Developer ’s Daughter Board will be installed into this board
for testing.
2
2
MCP2120 Daughter Boards
2 PICDEM? HPC Explorer Demo
Board Power Supplies (9V DC)
This board will be used to communicate with the system under test.
Used to power each of the PICDEM? HPC Explorer Demo Boards.
DS51571A-page 16
? 2005 Microchip Technology Inc.
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