MCP4728 datasheet(18/50 Pages) MICROCHIP

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MCP4728 Evaluation Board User’s Guide

DS51837A-page 14

1.3.2.1

CREATING SCRIPT FILE FOR CONFIGURATION BYTE WRITING

Click on WriteBlockAddrA8 in “Example I2C Scripts” column.

This will result in filling in the spaces under the Script Detail column.

You can now modify the Script Detail column parameters by clicking with the

right mouse button.

How to modify the parameters box in Script Details:

Under the Script Detail box, select the item in the parameter box.

Right click the mouse button. An option box will appear to the right of your

selection. These are the options available for the parameter selected.

Select the desired option and delete or insert the parameter box.

Keep the parameters in order as shown in the next examples.

1.3.2.2

EXAMPLE 1: SELECTING VOLTAGE REFERENCE OF EACH DAC

CHANNEL

You can select the voltage reference of each channel individually. The choices are:

external (VDD) or internal reference voltage (VREF = 2.048V). Figure 1-10 shows an

example of writing a script file on the PICkit Serial PC GUI.

FIGURE 1-10:

Creating a new Script file to select VREF of each DAC channel. In this example,

external VREF (VREF =VDD) is selected for all DAC channels.

Note:

The following examples need knowledge on the MCP4728 Registers and

Command protocols. Please refer to the Appendix C. “MCP4728

Read/Write Commands” and the MCP4728 Data Sheet for more details.

To change value:

•

Click this box and

type a new value

To delete or Insert box:

•

Select the box and

right click the mouse

button for options

available

Make sure the listed

parameters in “script

Detail” are in the exact

order as shown here.

MCP4728 Datasheet(PDF) 18 Page - Microchip Technology