bq20z80-V101
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SLUS625D–SEPTEMBER 2004–REVISED OCTOBER 2005
0 = SBS.RemainingCapacity( ) is not modified on valid charge termination
1 = SBS.RemainingCapacity( ) is written up to equal SBS.FullChargeCapacity( ) on valid charge
termination .
NRCHG
NCSMB
RESCAP
Enables the charge FET to remain on during sleep when DF:Operation Cfg B [NR] is set
0 = Charge FET turns off in Sleep (default)
1 = Charge FET remains on in Sleep
Enables extended SMBUS tTIMEOUT
0 = Normal SMBUS tTIMEOUT (default)
1 = Extended SMBUS tTIMEOUT
This bit configures the compensation model for the DF:Reserve Cap-mAh and DF:Reserve
Cap-10mWh.
0 = Light Load (C/20) Compensation
1 = SBS.AverageLoad( ) Compensation
PFD1,0
Configure the Permanent Failure LED display (disabled if SBS.Operation Cfg A [SLED] = 1)
PFD1
PFD0
OPERATION
0
0
1
1
0
1
0
1
PF Display not available
PF Display is activated after SOC display if DISP is held low for tLED_HOLD
PF Display not available
PF Display is automatically activated after SOC display
Nonremovable Configuration
NONREMOVABLE
bit7
bit6
bit5
bit4
bit3
bit2
bi1
bit0
CONFIGURATION
High Byte
Low Byte
–
–
–
–
OCD
–
OCC
–
OCD2
–
OCC2
AOCD
–
–
SCC
SCD
The DF:Non-Removable Cfg bits enable the current protection recovery features to be treated differently based
on DF:Operation Cfg A [NR]. The additional recovery features are detailed with the individual features in the 1st
Level Safety section of this data sheet.
SCD
= Short Circuit in Discharge
= Short Circuit in Charge
SCC
AOCD
OCC2
OCD2
OCC
= AFE Overcurrent in Discharge
= Overcurrent in Charge - Tier 2
= Tier-2 Overcurrent, Discharge
= Overcurrent in Charge
OCD
= Overcurrent in Discharge
PF Flags 1
The permanent failure flags 1 register indicates the reason that bq20z80 has entered permanent failure.
PF FLAGS 1
bit7
bit6
bit5
bit4
bit3
bit2
bi1
bit0
High Byte
FBF
–
–
SOPT
SOCD
SOCC
AFE_P
AFE_C
55
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