BQ2083-V1P2 Datasheet, PDF (38/55 Pages) Texas Instruments – SBS-COMPLIANT GAS GAUGE IC FOR USE WITH THE bp29311

bq2083-V1P2
SLUS573 − JULY 2003
www.ti.com
DATA FLASH
General
The bq2083−V1P2 accesses the internal data flash during reset and when storing historical data. The data flash
stores basic configuration information for use by the bq2083−V1P2. The data flash must be programmed correctly
for proper bq2083−V1P2 operation.
Memory Map
Table 13 shows the memory map for the data flash. It shows the default programming for the bq2083−V1P2. The
default programming reflects example data for a 3s2p Li-Ion battery pack with a 0.02-Ω sense resistor. The data
flash must be reprogrammed to meet the requirements of individual applications.
Read
Reading the data flash is a two step process:
1. Using the SMBus write word protocol, use command code 0x51 and let the LSB data byte be the address of
the flash location. The MSB data byte is set to 0.
2. Using the SMBus read word protocol, use command code 0x52 to retrieve the data.
Write
Using the SMBus write word protocol, use command code 0x50. Place the address of the flash location into the
LS byte of the data word. Place the data to be written into the MS byte data word.
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