Microchip Technology MCP3422EV User Manual
MCP3422 Evaluation Board for PICkit™ Serial User’s Guide
DS51781A-page 6
© 2008 Microchip Technology Inc.
FIGURE 1-1:
Front View of the MCP3422 Evaluation Board.
1.3
GETTING STARTED WITH THE PICKIT SERIAL ANALYZER
Figure 1-1 shows the MCP3422 Evaluation Board and Figure 1-2 shows the MCP3422
Evaluation Board and PICkit Serial Analyzer.
Evaluation Board and PICkit Serial Analyzer.
The following instructions describe how to use them together:
1.
Connect the MCP3422 Evaluation Board’s 6-pin socket to the PICkit Serial
Analyzer, as shown in Figure 1-2.
Analyzer, as shown in Figure 1-2.
2.
Connect the oscilloscope probes to the SCL and SDA test pins (optional).
3.
V
DD
Selection: You can use the V
DD
from the PICkit Serial Analyzer or you can
use your own external V
DD
. The JP1 connector selects the V
DD
path.
(a) Connect JP1, if using V
DD
from PICkit Serial Analyzer.
(b) Disconnect JP1 and apply V
DD
at VDD1 pin, if you are using an external V
DD
.
4.
Connecting V
DD
: LED D1 turns on when V
DD
is applied. The PICkit Serial
Analyzer will provide V
DD
automatically, if it is connected to the PC. Make sure
LED D1 turns on, when you execute the command using the PICkit Serial
Analyzer.
Analyzer.
5.
Connecting the analog inputs: If you need to measure a single-ended input,
connect the unused pin (example, CHX-) to V
connect the unused pin (example, CHX-) to V
SS
.
• Connecting the inputs: The MCP3422 Evaluation Board has input pads for
analog inputs for each input channel. You can connect all inputs at the same time
and multiplex the input channel using configuration register settings. You can also
leave the unused channel inputs floating.
and multiplex the input channel using configuration register settings. You can also
leave the unused channel inputs floating.