BQ76PL536APAPT Datasheet, PDF (46/60 Pages) Texas Instruments – 3 to 6 Series Cell Lithium-Ion Battery Monitor and Secondary Protection IC for Applications

bq76PL536A
SLUSAD3A – JUNE 2011 – REVISED AUGUST 2012
CONFIG_CUVT REGISTER (0x45)
7
6
5
µs/ms
–
–
4
CUVD[4]
3
CUVD[3]
2
CUVD[2]
The CONFIG_CUVT register determines cell overvoltage detection delay time.
1
CUVD[1]
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0
CUVD[0]
[7] (µs/ms):
[4..0] CUVD:
Determines the units of the delay time, microseconds or milliseconds
0 = Microseconds
1 = Milliseconds
0x01 = 100; each binary increment adds 100 until 0x1f = 3100.
Note:
When this register is programmed to 0x00, the delay becomes 0s AND the CUV state
is NOT latched in the CUV_FAULT[] register. In this operating mode, the overvoltage
state for a cell is virtually instantaneous in the CUV_FAULT[] register. This mode may
cause system firmware to miss a dangerous cell undervoltage condition.
CONFIG_OT REGISTER (0x46)
7
OT2[3]
6
OT2[2]
5
OT2[1]
4
OT2[0]
3
OT1[3]
2
OT1[2]
1
OT1[1]
0
OT1[0]
The CONFIG_OT register holds the configuration of the overtemperature thresholds for the two TS inputs.
For each respective nibble (OT1 or OT2), the value 0x0 disables this function. Other settings program a trip
threshold. See the Ratiometric Sensing section for details of setting this register. Values above 0x0b are illegal
and should not be used.
CONFIG_OTT REGISTER (0x47)
7
COTD[7]
6
COTD[6]
5
COTD[5]
4
COTD[4]
3
COTD[3]
2
COTD[2]
The CONFIG_OTT register determines cell overtemperature detection delay time.
0x01 = 10 ms; each binary increment adds 10 ms until 0xff = 2.55 seconds.
1
COTD[1]
0
COTD[0]
Note: When this register is programmed to 0x00, the delay becomes 0s AND the OT state is NOT
latched in the ALERT_STATUS[] register. In this operating mode, the overtemperature state
for a TSn input is virtually instantaneous in the register. This mode may cause system
firmware to miss a dangerous overtemperature condition.
USERx REGISTER (0x48–0x4b) (USER1–4)
7
USER[7]
6
USER[6]
5
USER[5]
4
USER[4]
3
USER[3]
2
USER[2]
1
USER[1]
0
USER[0]
The four USER registers can be used to store user data. The part does not use these registers for any internal
function. They are provided as convenient storage for user S/N, date of manufacture, etc.
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