Datasheet

MCP3424 Evaluation Board User’s Guide

FIGURE 1-1: Front View of the MCP3424 Evaluation Board.

1.3 GETTING STARTED WITH PICKIT SERIAL ANALYZER

Figure 1-1 shows the MCP3424 Evaluation Board, and Figure 1-2 shows the

MCP3424 and PICkit Serial Analyzer.

The following describes how to use them together:

1. Connect the MCP3424 Evaluation Board’s 6-pin socket to the PICkit Serial Ana-

lyzer as shown in Figure 1-2.

2. Connect the oscilloscope probes to the SCL and SDA test pins (optional).

3. V

Selection: You can use the V

from the PICkit Serial Analyzer or use your

own external V

. The JP1 connector selects the V

path.

(a) Connect JP1, if using V

from PICkit Serial Analyzer,

(b) Disconnect JP1 and apply V

at V

1 pin, if you are using an external V

4. Address bit selection using JP2 and JP3 connectors.

The I

C device code and address bits of the MCP3424 device are:

• MCP3424 I

C device code: ‘1101’

• A2, A1, A0 Address Bits: determined by the JP2 (Adr1 pin) and JP3 (Adr0 pin)

• The JP2 and JP3 connectors are external address bit selections. Connect these

pins to V

, V

, float, or connect any arbitrary voltage

• See Table 1-1 for the I

C Device Address bits and JP2 and JP3 connections

5. Connecting V

: LED D1 turns on when V

is applied. The PICkit Serial Ana-

lyzer will provide V

automatically, if it is connected to the PC. Make sure LED

D1 turns on, when you execute the command using the PICkit Serial Analyzer.

6. Connecting the analog inputs: If you need to measure a single-ended input,

connect the unused pin (example, CHX-) to V

• Connecting the inputs: The MCP3424 Evaluation Board has input pads for ana-

log 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

7. Use the PICkit Serial Analyzer PC GUI to send I

C write and read commands.