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Operation
The bq28400 data flash is configured per the default settings detailed in the bq28400 data sheet
(
). Ensure that the settings are correctly changed to match the pack and application for the
bq28400 solution being evaluated.
Use the Data Flash screen (
) to configure the settings.
Figure 11. Data Flash Screen, 1st Level Safety Class
To read all of the data from the bq28400 data flash, click on menu option | Data Flash | Read All |.
To write to a data flash location, click on the desired location, enter the data and click Enter, which writes
the entire tab of flash data, or select the menu option | Data Flash | Write All |. The data flash must be
read before any writes are performed to avoid any incorrect data being written to the device.
The | File | Special Export | menu options allow the data flash to be exported, but it configures the
exported data flash to a learned state ready for mass production use.
The data flash configuration can be saved to a file by selecting | File | Export | and entering a file name. A
data flash file also can be retrieved in this way, imported, and written to the bq28400 using the | Write All
| button.
15
SLUU494 – February 2011
bq28400EVM-001 SBS 1.1 Compliant Tablet PC and Netbook 2-Series Cell
Li-Ion Battery Gas Gauge and Protection
© 2011, Texas Instruments Incorporated