Texas Instruments bq78350-R1

0x09 Voltage() www.ti.com
126
SLUUBD3D–September 2015–Revised September 2018
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SBS Commands
SBS
Cmd
Name
Access
Proto-
col
Type Min Max Unit
SE US FA
0x08 Temperature() R Word U2 0 65535 0.1°K
17.11 0x09 Voltage()
This read-word function returns the sum of the measured cell voltages and is scaled per
SpecificationInfo().
SBS
Cmd
Name
Access
Proto-
col
Type Min Max Unit
SE US FA
0x09 Voltage() R Word U2 0 65535 mV
17.12 0x0A Current()
This read-word function returns an integer value of the measured current being supplied (or accepted) by
the battery in mA, with a range of –32,768 to 32,767. A positive value indicates charge current and a
negative value indicates discharge. Any current value within Deadband is reported as 0 mA by the
Current() function.
SBS
Cmd
Name
Access
Proto-
col
Type Min Max Unit
SE US FA
0x0A Current() R Word I2 –32767 32768 mA
The value reported is an average of four readings of the CC_HI and CC_LO registers of the companion
AFE taken at 250-ms intervals.
17.13 0x0B AverageCurrent()
This read-word function returns a signed integer value that approximates a one-minute rolling average of
the current being supplied (or accepted) through the battery terminals in mA, with a range of –32,768 to
32,767.
AverageCurrent() is calculated by a rolling IIR filtered average of Current() function data with a period of
14.5 s. During the time after a reset or when switching between charge and discharge currents and before
14.5 s has elapsed, the reported AverageCurrent() = Current() function value.
SBS
Cmd
Name
Access
Proto-
col
Type Min Max Unit
SE US FA
0x0B AverageCurrent() R Word I2 –32767 32768 mA
17.14 0x0C MaxError()
This read-word function returns the expected margin of error, in %, in the state-of-charge calculation with
a range of 1 to 100%.
SBS
Cmd
Name
Access
Protocol Type Min Max
SE US FA
0x0C MaxError() R Word U1 0% 100%
Status Condition Action
Full device reset MaxError() = 100%
FCC updated MaxError() = 2%
FCC Updated but capped by FCC Learn Up or FCC Learn Down MaxError() = 8%