BQ27541 Datasheet, PDF (11/38 Pages) Texas Instruments – Single Cell Li-Ion Battery Fuel Gauge for Battery Pack Integration

bq27541
www.ti.com ........................................................................................................................................................................................... SLUS861 – DECEMBER 2008
CONTROL_STATUS: 0X0000
Instructs the fuel gauge to return status information to Control addresses 0x00/0x01. The status word includes
the following information.
High Byte
Low Byte
bit7
SE
SHUTDOWN
Table 3. CONTROL_STATUS Bit Definitions
bit6
FAS
HIBERNATE
bit5
SS
FULLSLEEP
bit4
CSV
SLEEP
bit3
CCA
LDMD
bit2
BCA
RUP_DIS
bit1
–
VOK
bit0
–
QEN
SE = Status bit indicating the SE pin is active. True when set (i.e. SE pin is low) . Default is 0.
FAS = Status bit indicating the bq27541 is in FULL ACCESS SEALED state. Active when set.
SS = Status bit indicating the bq27541 is in the SEALED State. Active when set.
CSV = Status bit indicating a valid data flash checksum has been generated. Active when set.
CCA = Status bit indicating the bq27541 Coulomb Counter Calibration routine is active. Active when set.
BCA = Status bit indicating the bq27541 Board Calibration routine is active. Active when set.
SHUTDOWN = Control bit indicating the fuel gauge can force its SE pin low to signal an external shutdown. True when set.
Default is 0.
HIBERNATE = Status bit indicating a request for entry into HIBERNATE from SLEEP mode has been issued. True when set. Default is
0.
Control bit when set will put the bq27541 into the lower power state of SLEEP mode. It is not possible to monitor this bit
FULLSLEEP = because any communication will automatically clear it. The state can be detected by monitoring the power used by the
bq27541.
SLEEP = Status bit indicating the bq27541 is in SLEEP mode. True when set
LDMD = Status bit indicating the bq27541 Impedance Track™ algorithm using constant-power mode. True when set. Default is 0
(constant-current mode).
RUP_DIS = Status bit indicating the bq27541 Ra table updates are disabled. True when set.
VOK = Status bit indicating cell voltages are OK for Qmax updates. True when set.
QEN = Status bit indicating the bq27541 Qmax updates are enabled. True when set.
Copyright © 2008, Texas Instruments Incorporated
Product Folder Link(s): bq27541
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