BQ33100_15 Datasheet, PDF (34/67 Pages) Texas Instruments – Super Capacitor Manager

bq33100
SLUS987B – JANUARY 2011 – REVISED DECEMBER 2015
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8.5.2.2.2 Temperature (0x08)
This read-word function returns an unsigned integer value of the temperature in units of 0.1°K, as measured by
the bq33100. It has a range of 0 to 6553.5°K. The source of the measured temperature is configured by the
[TEMP1] and [TEMP0] bits in the Operation Cfg register.
SBS
CMD
0x08
MODE
R
NAME
Temperature
Table 45. Temperature
FORMAT
Unsigned
Integer
SIZE IN
BYTES
2
MIN VALUE
0
MAX VALUE
65535
DEFAULT
VALUE
—
UNIT
0.1°K
8.5.2.2.3 Voltage (0x09)
This read-word function returns an unsigned integer value of the capacitor stack array (voltage at the VC1 input)
in mV with a range of 0 to 20000 mV
SBS
CMD
0x09
MODE
R
NAME
Voltage
FORMAT
Unsigned
Integer
Table 46. Voltage
SIZE IN
BYTES
MIN VALUE
2
0
MAX VALUE
20000
DEFAULT
VALUE
—
UNIT
mV
8.5.2.2.4 Current (0x0a)
This read-word function returns a signed integer value of the measured current being supplied (or accepted) by
the super capacitor pack in mA, with a range of –32768 to 32767. A positive value indicates charge current and a
negative value indicates discharge.
Any current value within the Deadband will be reported as 0 mA by the Current function.
SBS
CMD
0x0a
MODE
R
NAME
Current
FORMAT
Unsigned
Integer
Table 47. Current
SIZE IN
BYTES
MIN VALUE
2
–32768
MAX VALUE
32767
DEFAULT
VALUE
—
UNIT
mA
8.5.2.2.5 ESR (0x0b)
This read-word function returns an unsigned integer value of the Super Capacitor array total ESR in mΩ with a
range of 0 to 65535 mΩ
SBS
CMD
0x0b
MODE
R
NAME
ESR
FORMAT
Unsigned
Integer
Table 48. ESR
SIZE IN
BYTES
MIN VALUE
2
0
MAX VALUE
65535
DEFAULT
VALUE
—
UNIT
mΩ
8.5.2.2.6 RelativeStateofCharge (0x0d)
This read-word function returns an unsigned integer value of the predicted remaining super capacitor
capacitance expressed as a percentage of Capacitance with a range of 0 to 100%, with fractions of % rounded
up.
If the [RSOCL] bit in Operation Cfg is set then RelativeStateofCharge is held at 99% until primary charge
termination occurs and only displays 100% upon entering primary charge termination.
If the [RSOCL] bit inOperation Cfg is cleared then RelativeStateofCharge is not held at 99% until primary
charge termination occurs. Fractions of % greater than 99% are rounded up to display 100%.
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