Datasheet

Initialization
4-3
Operation
4.2 Initialization
This section describes the settings that must be made before the bq2023 is
evaluated.
4.2.1 Setting the Programmable bq2023 Wake-Up Threshold Option
Select the wake-up threshold with the WOE pulldown tab at location 0x0105.
This designates the potential across the sense resistor below which the
bq2023 goes to sleep, provided that the sleep enable (SLEN) bit is set. To set
the SLEN bit check the sleep enable (SLEN) box.
4.2.2 Register Clearing
Each counter in the bq2023 can be cleared (set to 00) by depressing the adja-
cent Clr button. The All button clears all counting registers in one sequence.
4.3 Reading and Writing Flash Memory
The flash memory on the bq2023 can store battery-pack-specific parameters
used by the host system in its capacity monitoring algorithm.
To read the flash memory, click on the Flash button to select the flash data
screen. Click the Read Flash button to read all six flash pages or click the indi-
vidual page number to read the pages individually.
Each flash location can be modified by clicking on the individual location and
entering the new value in hex.
The flash values can be stored to disk as one data file. To do this, select
File|Save Flash File and enter the file name in the Store Flash File window.
The file can subsequently be opened using the the File|Open Flash File com-
mand from the pulldown menu. Once the flash file is loaded into the program
the Write Flash button can be used to store the data in the bq2023.