PAC1921 datasheet(37/56 Pages) MICROCHIP

37 / 56 page

Software Description

 2015 Microchip Technology Inc.

DS50002376A-page 37

The power calculation using the VPOWER Result registers value from Figure 4-15 is

shown in Equation 4-2.

EQUATION 4-2:

POWER CALCULATION

4.3.3.1

CONFIGURATION SAVE AND LOAD

The Calculations/File IO tab contains controls, as shown in Figure 4-16, which save the

settings currently configured in the PAC1921 to allow quick reconfiguration at any time.

FIGURE 4-16:

Save/Load Section.

To save configuration settings, configure the PAC1921 as desired, then display the

Calculations/File IO tab. The “FF Reg File Path” box defaults to where the GUI soft-

ware is installed. To change the location, type in a path, or click the folder icon to use

a Windows® system-based navigation aid to select the folder where the configuration

file will be saved. The file should be named with the.txt extension or similar text file

format. Once a file name and location have been chosen, click the Save switch, and

the file is saved.

The data is saved in two columns, separated by tabs. The first column is the register

address and the second column is the register data.

Once a file is saved, it can be recalled at any time by selecting the file in the “FF Reg

File Path” box and clicking the Load switch.

Click the Chip Defaults switch or press the <F6> function key on the keyboard to

reload register defaults on the PAC1921.

0.1V

 1



-----------------

32V

----------



1023

----------------------------------42



0.13138W



Where:

0.1V

Maximum VSENSE voltage



Value of RSENSE resistor

Digital current gain

32V/1

Maximum voltage

1023

10-bit FSR

Decimal value of VPOWER Result Registers 1Dh and 1Eh

Note: If a file with the same name already exists, the file will be overwritten

without warning and old data will be lost.

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