MCP212X Developer’s Daughter Board User’s Guide
DS51571B-page 16
©
2006 Microchip Technology Inc.
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
Demo Board are shown in
Appendix D. “Using the MCP212X Developer’s Daughter
Board with the PICDEM™ HPC Explorer Demo Board”
MCP212X Developer’s Daughter Board with the PICDEM™ FS USB Demo Board”
supplies instructions for performing a demo using the PICDEM™ FS USB Demo
Board.
Appendix F. “Configuring the HyperTerminal
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.
Figure 2-4 shows a system block diagram.
TABLE 2-3:
SYSTEM HARDWARE REQUIREMENTS
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.
Qty
Hardware
Purpose
1
PC with 2 serial ports
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.
2
Serial Cables
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
MCP2120 Daughter Boards This
board
will
be used to communicate with the system under test.
2
2 PICDEM™ HPC Explorer Demo
Board Power Supplies (9V DC)
Used to power each of the PICDEM™ HPC Explorer Demo Boards.
