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FEATURES
APPLICATIONS
DESCRIPTION
bq20z90
SLUS662A – DECEMBER 2005 – REVISED JUNE 2006
SBS 1.1-COMPLIANT GAS GAUGE ENABLED WITH IMPEDANCE TRACK™TECHNOLOGY FOR USE WITH THE bq29330
•Optional Pulse Charging Feature forImproved Charge Times•Patented Impedance Track™ TechnologyAccurately Measures Available Charge in •Drives 3-, 4- or 5-Segment LED Display forLi-Ion and Li-Polymer Batteries Remaining Capacity Indication•Better than 1% Error Over Lifetime of the •Supports SHA-1 AuthenticationBattery
•Lifetime Data Logging•Instant Accuracy – No Learning Cycle
•30-Pin TSSOP (DBT)Required
•Automatically adjusts for battery aging,battery self discharge and temperature
•Notebook PCsinefficiencies
•Medical and Test Equipment•Supports the Smart Battery Specification
•Portable InstrumentationSBS V1.1•Works With the TI bq29330 Analog Front-End(AFE) Protection IC to Provide Complete Pack
The bq20z90 SBS-compliant gas gauge IC,Electronics Solution
incorporating patented Impedance Track™•Full Array of Programmable Voltage, Current, technology, is designed for battery-pack or in-systeminstallation. The bq20z90 measures and maintainsand Temperature Protection Features
an accurate record of available charge in Li-ion or•Integrated Time Base Removes Need for
Li-polymer batteries using its integratedExternal Crystal with Optional Crystal Input
high-performance analog peripherals. The bq20z90•Electronics for 7.2-V, 10.8-V or 14.4-V Battery
monitors capacity change, battery impedance,Packs With 50% Fewer External Components
open-circuit voltage, and other critical parameters ofthe battery pack, and reports the information to the•Based on a Powerful Low-Power RISC CPU
system host controller over a serial-communicationCore With High-Performance Peripherals
bus. It is designed to work with the bq29330 analog•Integrated Field Programmable FLASH
front-end (AFE) protection IC to maximizeMemory Eliminates the Need for External
functionality and safety, and minimize componentConfiguration Memory
count and cost in smart battery circuits.•Measures Charge Flow Using a
The Impedance Track technology continuouslyHigh-Resolution, 16-Bit Integrating
analyzes the battery impedance, resulting in superiorDelta-Sigma Converter
gas-gauging accuracy. This enables remainingcapacity to be calculated with discharge rate,– Better Than 0.65 nVh of Resolution
temperature, and cell aging all accounted for during– Self-Calibrating
each stage of every cycle.•Uses 16-Bit Delta-Sigma Converter forAccurate Voltage and Temperature
AVAILABLE OPTIONSMeasurements
PACKAGE•Extensive Data Reporting Options For
T
A
30-PIN TSSOP (DBT) 30-PIN TSSOP (DBT)Improved System Interaction
Tube Tape & Reel
–40 °C to
bq20z90DBT
(1)
bq20z90DBTR
(2)85 °C
(1) A single tube quantity is 50 units.(2) A single reel quantity is 2000 units
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of TexasInstruments semiconductor products and disclaimers thereto appears at the end of this data sheet.IMPEDANCE TRACK is a trademark of Texas Instruments.
PRODUCTION DATA information is current as of publication date.
Copyright © 2005–2006, Texas Instruments IncorporatedProducts conform to specifications per the terms of the TexasInstruments standard warranty. Production processing does notnecessarily include testing of all parameters.
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SYSTEM PARTITIONING DIAGRAM
LDO+
Reset
I2C
SMBus
HDQ
Pack+
Pack-
Discharge/Charge/
Pre-ChargeFETs
2-TierOverCurrent
Protection
2kBytesof
DataFlash
Fuse
Watchdog&
Protection Timing
Cell Balancing Drive
SystemInterface SystemInterface
32.768kHz
16DigGPIO&Peripherals
8DigGPIOor AnalogGPI
2.5V/3.3V(LED) NchFET Drive
(ChargePumps)
RAMConfiguration,Status
andControlRegisters
24kx22Program
Flash
2kBytes
ofRAM
6kx22
MaskROM
Cell, Bat and Pack
Voltage Translation
Precharge
Control
Host Interface & Data
Management
TOUT andLEDOUT
PowerSupport
Reset
AnalogOutputDrive
32kHzOscillatorand8MHzSystemClock
T1
StandardDelta-Sigma A toDConverter
IntegratingDelta-Sigma A toDConverter
1
2
7
6
5
4
3
30
29
28
27
26
25
24
NC
XALERT
SDATA
SCLK
CLKOUT
TS1
VCELL-
VCELL+
NC
RBI
VCC
VSS
MRST
TS2
PRES SRN
PFIN
SAFE
SMBD
NC LED4
LED5
*VSS
SRP
8
9
10
11
12
23
22
21
20
19
13
14
15
18
17
16
SMBC
DISP
NC
LED3
LED2
LED1
NC-Nointernalconnection
bq20z90
SLUS662A – DECEMBER 2005 – REVISED JUNE 2006
TSSOP (DBT)(TOP VIEW)
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bq20z90
SLUS662A – DECEMBER 2005 – REVISED JUNE 2006
TERMINAL FUNCTIONS
TERMINAL
I/O
(1)
DESCRIPTIONNO. NAME
1 NC – Not used— leave floating2 XALERT I Input from bq29330 XALERT output.3 SDATA I/O Data transfer to and from bq293304 SCLK I/O Communication clock to the bq293305 CLKOUT O 32.768-kHz output for the bq29330. This pin should be directly connected to the AFE.6 TS1 I 1
st
Thermistor voltage input connection to monitor temperature7 TS2 I 2
nd
Thermistor voltage input connection to monitor temperature8 PRES I Active low input to sense system insertion and typically requires additional ESD protectionActive low input to detect secondary protector output status and allows the bq20z90 to report the9 PFIN I
status of the 2
nd
level protection output10 SAFE O Active high output to enforce additional level of safety protection; e.g., fuse blow.11 SMBD I/OD SMBus data open-drain bidirectional pin used to transfer address and data to and from the bq20z9012 NC – Not used— leave floating13 SMBC I/OD SMBus clock open-drain bidirectional pin used to clock the data transfer to and from the bq20z90Display control for the LEDs. This pin is typically connected to bq29330 REG via a 100-k Ωresistor14 DISP I
and a push-button switch to VSS.15 NC – Not used— leave floating16 LED1 O LED1 display segment that drives an external LED depending on the firmware configuration17 LED2 O LED2 display segment that drives an external LED depending on the firmware configuration18 LED3 O LED3 display segment that drives an external LED depending on the firmware configuration19 LED4 O LED4 display segment that drives an external LED depending on the firmware configuration20 LED5 O LED5 display segment that drives an external LED depending on the firmware configuration21 VSS – Connected I/O pin to VSSConnections to the top of a small-value sense resistor to monitor the battery charge- and22 SRP IA
discharge-current flowConnections to the bottom of a small-value sense resistor to monitor the battery charge- and23 SRN IA
discharge-current flowMaster reset input that forces the device into reset when held low. Must be held high for normal24 MRST I
operation25 VSS P Negative Supply Voltage26 VCC P Positive Supply VoltageBackup power to the bq20z90 data registers during periods of low operating voltage. RBI accepts a27 RBI P
storage capacitor or a battery input.28 NC – Not used— leave floating29 VCELL+ I Input from bq29330 used to read a scaled value of individual cell voltages30 VCELL- I Input from bq29330 used to read a scaled value of individual cell voltages
(1) I = Input, IA = Analog input, I/O = Input/output, I/OD = Input/Open-drain output, O = Output, OA = Analog output, P = Power
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ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
bq20z90
SLUS662A – DECEMBER 2005 – REVISED JUNE 2006
over operating free-air temperature range (unless otherwise noted)
(1)
RANGE
V
CC
relative to V
SS
Supply voltage range –0.3 V to 2.75 VV
(IOD)
relative to V
SS
Open-drain I/O pins –0.3 V to 6 VV
I
relative to V
SS
Input voltage range to all other pins –0.3 V to V
CC
+ 0.3 VT
A
Operating free-air temperature range –40 °C to 85 °CT
stg
Storage temperature range –65 °C to 150 °C
(1) Stresses beyond those listed under absolute maximum ratings may cause permanent damage to the device. These are stress ratingsonly, and functional operation of the device at these or any other conditions beyond those indicated under recommended operatingconditions is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
V
CC
= 2.4 V to 2.6 V, T
A
= –40 °C to 85 °C (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
V
CC
Supply voltage 2.4 2.5 2.6 VNo flash programming 400
(1)I
CC
Operating mode current µAbq20z90 + bq29330 475Sleep mode 8
(1)I
(SLP)
Low-power storage mode current µAbq20z90 + bq29330 51Output voltage low SMBC, SMBD, SDATA, SCLK, SAFE I
OL
= 0.5 mA 0.4 VV
OL
LED1 – LED5 I
OL
= 10 mA 0.4 VV
OH
Output high voltage, SMBC, SMBD, SDATA, SCLK, SAFE I
OH
= –1 mA V
CC
– 0.5 VV
IL
Input voltage low SMBC, SMBD, SDATA, SCLK, XALERT, –0.3 0.8
VPRES, PFINDISP –0.3 0.8 VV
IH
Input voltage high SMBC, SMBD, SDATA, SCLK, XALERT, 2 6
VPRES, PFINDISP 2 V
CC
+ 0.3 VC
IN
Input capacitance 5 pFV
(AI1)
Input voltage range VCELL+, VCELL-,TS1, TS2 - 0.2 0.8XV
CC
VV
(AI2)
Input voltage range SR1, SR2 – 0.20 0.20Z
(AI2)
Input impedance VCELL+, VCELL-, TS1, TS2 0 V–1 V 8 M ΩZ
(AI1)
Input impedance SR1, SR2 0 V–1 V 2.5 M Ω
(1) This value does not include the bq29330
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POWER-ON RESET
1.76
1.77
1.78
1.79
1.8
1.81
-40 -20 0 20 40 60 80
T -Free-AirTemperature-°C
A
Power-OnResetNegative-GoingVoltage-V
POWERONRESETBEHAVIOR
FREE-AIRTEMPERATURE
VS
INTEGRATING ADC (Coulomb Counter) CHARACTERISTICS
OSCILLATOR
bq20z90
SLUS662A – DECEMBER 2005 – REVISED JUNE 2006
V
CC
= 2.4V to 2.6 V, T
A
= –40 °C to 85 °C (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
V
IT–
Negative-going voltage input 1.7 1.8 1.9 VV
HYS
Power-on reset hysteresis 50 125 200 mV
V
CC
= 2.4V to 2.6 V, T
A
= –40 °C to 85 °C (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
V
(SR)
Input voltage range, V
(SRN)
and V
(SRP)
V
(SR)
= V(SRN) – V(SRP) –0.2 0.2 VV
(SROS)
Input offset 10 µVINL Integral nonlinearity error 0.007% 0.034%
V
CC
= 2.4 V to 2.6 V, T
A
= –40 °C to 85 °C (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
HIGH FREQUENCY OSCILLATOR
f
(OSC)
Operating Frequency 4.194 MHz-3% 0.25% 3%f
(EIO)
Frequency Error
(1) (2)
T
A
= 20 °C to 70 °C -2% 0.25% 2%t
(SXO)
Start-up Time
(3)
2.5 5 ms
LOW FREQUENCY OSCILLATOR
f
(LOSC)
Operating Frequency 32.768 KHz-2.5% 0.25% 2.5%f
(LEIO)
Frequency Error
(2) (4)
T
A
= 20 °C to 70 °C -1.5% 0.25% 1.5%
(1) The frequency error is measured from 4.194 MHz.(2) The frequency drift is included and measured from the trimmed frequency at V
CC
= 2.5 V, T
A
= 25 °C.(3) The start-up time is defined as the time it takes for the oscillator output frequency to be within 1% of the specified frequency.(4) The frequency error is measured from 32.768 kHz.
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DATA FLASH MEMORY CHARACTERISTICS
REGISTER BACKUP
bq20z90
SLUS662A – DECEMBER 2005 – REVISED JUNE 2006
OSCILLATOR (continued)V
CC
= 2.4 V to 2.6 V, T
A
= –40 °C to 85 °C (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
t
(LSXO)
Start-up time
(5)
500 µs
(5) The start-up time is defined as the time it takes for the oscillator output frequency to be ±3%.
V
CC
= 2.4 V to 2.6 V, T
A
= –40 °C to 85 °C (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
t
DR
Data retention See
(1)
10 YearsFlash programming write-cycles See
(1)
20,000 Cyclest
(WORDPROG)
Word programming time See
(1)
2 msI
(DDdPROG)
Flash-write supply current See
(1)
5 10 mA
(1) Assured by design. Not production tested
V
CC
= 2.4 V to 2.6 V, T
A
= –40 °C to 85 °C (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
I
(RB)
RB data-retention input current V
(RB)
> V
(RBMIN)
, V
CC
< V
IT-
1500 nAV
(RB)
> V
(RBMIN)
, V
CC
< V
IT-
, T
A
= 0 °C 40 160to 50 °CV
(RB)
RB data-retention voltage
(1)
1.7 V
(1) Specified by design. Not production tested.
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SMBus TIMING SPECIFICATIONS
bq20z90
SLUS662A – DECEMBER 2005 – REVISED JUNE 2006
V
CC
= 2.4 V to 2.6 V, T
A
= –40 °C to 85 °C (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
f
SMB
SMBus operating frequency Slave mode, SMBC 50% duty cycle 10 100
kHzf
MAS
SMBus master clock frequency Master mode, no clock low slave extend 51.2t
BUF
Bus free time between start and stop 4.7t
HD:STA
Hold time after (repeated) start 4
µst
SU:STA
Repeated start setup time 4.7t
SU:STO
Stop setup time 4Receive mode 0t
HD:DAT
Data hold time
Transmit mode 300 nst
SU:DAT
Data setup time 250t
TIMEOUT
Error signal/detect See
(1)
25 35 mst
LOW
Clock low period 4.7
µst
HIGH
Clock high period See
(2)
4 50t
LOW:SEXT
Cumulative clock low slave extend time See
(3)
25
mst
LOW:MEXT
Cumulative clock low master extend time See
(4)
10t
F
Clock/data fall time (V
ILMAX
– 0.15 V) to (V
IHMIN
+ 0.15 V) 300
nst
R
Clock/data rise time 0.9 VCC to (VILMAX – 0.15 V) 1000
(1) The bq20z90 times out when any clock low exceeds t
TIMEOUT
.(2) t
HIGH:MAX
. is minimum bus idle time. SMBC = 1 for t > 50 µs causes reset of any transaction involving the bq20z90 that is in progress.(3) t
LOW:SEXT
is the cumulative time a slave device is allowed to extend the clock cycles in one message from initial start to the stop.(4) t
LOW:MEXT
is the cumulative time a master device is allowed to extend the clock cycles in one message from initial start to the stop.
SMBus TIMING DIAGRAM
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FEATURE SET
Primary (1st Level) Safety Features
Secondary (2nd Level) Safety Features
Charge Control Features
Gas Gauging
bq20z90
SLUS662A – DECEMBER 2005 – REVISED JUNE 2006
The bq20z90 supports a wide range of battery and system protection features that can easily be configured. Theprimary safety features include:
•Battery cell over/under voltage protection•Battery pack over/under voltage protection•2 independent charge overcurrent protection•3 independent discharge overcurrent protection•Short circuit protection•Over temperature protection•AFE Watchdog
•Host Watchdog
The secondary safety features of the bq20z90 can be used to indicate more serious faults via the SAFE (pin 10)pin. This pin can be used to blow an in-line fuse to permanently disable the battery pack from charging ordischarging. The secondary safety features include:
•Safety over voltage•Battery cell imbalance•2nd level protection IC input•Safety over current•Safety over temperature•Open thermistor•Charge FET and Zero-Volt Charge FET fault•Discharge FET fault•Fuse blow failure detection•AFE Communication error•AFE Verification error•Internal flash data error
The bq20z90 charge control features include:
•Report the appropriate charging current needed for constant current charging and the appropriate chargingvoltage needed for constant voltage charging to a smart charger using SMBus broadcasts.•Determine the chemical state of charge of each battery cell using Impedance Track™. Using cell balancingalgorithm, gradually decrease the differences in the cells' state of charge in a fully charged state. Thisprevents high cells from overcharging, causing excessive degradation and also increases the usable packenergy by preventing early charge termination.•Support Pre-charging/Zero-volt charging•Support Fast charging•Support Pulse charging•Support Charge Inhibit and Charge Suspend modes•Report charging faults and also indicate charging status via charge and discharge alarms.
The bq20z90 uses the Impedance Track™ Technology to measure and calculate the available charge in batterycells. The achievable accuracy is better than 1% error over the lifetime of the battery and there is no fullcharge-discharge learning cycle required.
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LED Display
LifeTime Data Logging Features
Authentication
Power Modes
CONFIGURATION
Oscillator Function
System Present Operation
bq20z90
SLUS662A – DECEMBER 2005 – REVISED JUNE 2006
FEATURE SET (continued)See Theory and Implementation of Impedance Track Battery Fuel-Gauging Algorithm application note(SLUA364) for further details.
The bq20z90 can drive a 3-, 4-, or 5- segment LED display for remaining capacity indication. The LED drivecurrent can be adjusted to 3mA, 4mA and 5mA digitally.
The bq20z90 offers a lifetime data logging array, where all important measurements are stored for warranty andanalysis purposes. The data monitored include:
•Lifetime maximum temperature•Lifetime minimum temperature•Lifetime maximum battery cell voltage•Lifetime minimum battery cell voltage•Lifetime maximum battery pack voltage•Lifetime minimum battery pack voltage•Lifetime maximum charge current•Lifetime maximum discharge current•Lifetime maximum charge power•Lifetime maximum discharge power•Lifetime maximum average discharge current•Lifetime maximum average discharge power•Lifetime average temperature
The bq20z90 supports authentication by the host using SHA-1.
The bq20z90 supports 3 different power modes to reduce power consumption:
•In Normal Mode, the bq20z90 performs measurements, calculations, protection decisions, and data updatesin 1 second intervals. Between these intervals, the bq20z90 is in a reduced power stage.•In Sleep Mode, the bq20z90 performs measurements, calculations, protection decisions, and data updatesin adjustable time intervals. Between these intervals, the bq20z90 is in a reduced power stage.•In Shutdown Mode the bq20z90 is completety disabled.
The bq20z90 fully integrates the system and processor oscillators and, therefore, requires no pins orcomponents for this feature.
The bq20z90 periodically verifies the PRES pin and detects that the battery is present in the system via a lowstate on a PRES input. When this occurs, bq20z90 enters normal operating mode. When the pack is removedfrom the system and the PRES input is high, the bq20z90 enters the battery-removed state, disabling thecharge, discharge and ZVCHG FETs. The PRES input is ignored and can be left floating when non-removalmode is set in the data flash.
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BATTERY PARAMETER MEASUREMENTS
Charge and Discharge Counting
Voltage
Current
Wake Function
Auto Calibration
Temperature
COMMUNICATIONS
SMBus On and Off State
bq20z90
SLUS662A – DECEMBER 2005 – REVISED JUNE 2006
FEATURE SET (continued)
The bq20z90 uses an integrating delta-sigma analog-to-digital converter (ADC) for current measurement, and asecond delta-sigma ADC for individual cell and battery voltage, and temperature measurement.
The integrating delta-sigma ADC measures the charge/discharge flow of the battery by measuring the voltagedrop across a small-value sense resistor between the SRP and SRN pins. The integrating ADC measuresbipolar signals from -0.25 V to 0.25 V. The bq20z90 detects charge activity when V
SR
= V
(SRP)
-V
(SRN)
is positiveand discharge activity when V
SR
= V
(SRP)
-V
(SRN)
is negative. The bq20z90 continuously integrates the signal overtime, using an internal counter. The fundamental rate of the counter is 0.65 nVh.
The bq20z90 updates the individual series cell voltages through the bq29330 at one second intervals. Thebq20z90 configures the bq29330 to connect the selected cell, cell offset, or bq29330 VREF to the CELL pin ofthe bq29330, which is required to be connected to VIN of the bq20z90. The internal ADC of the bq20z90measures the voltage, scales it, and calibrates itself appropriately. This data is also used to calculate theimpedance of the cell for the Impedance Track™ gas-gauging.
The bq20z90 uses the SRP and SRN inputs to measure and calculate the battery charge and discharge currentusing a 5 m Ωto 20 m Ωtyp. sense resistor.
The bq20z90 can exit sleep mode, if enabled, by the presence of a programmable level of current signal acrossSRP and SRN.
The bq20z90 provides an auto-calibration feature to cancel the voltage offset error across SRP and SRN formaximum charge measurement accuracy. The bq20z90 performs auto-calibration when the SMBus lines staylow continuously for a minimum of a programmable amount of time.
The bq20z90 TS1 and TS2 inputs, in conjunction with two identical NTC thermistors (default are Semitec103AT), measure the battery environmental temperature. The bq20z90 can also be configured to use its internaltemperature sensor.
The bq20z90 uses SMBus v1.1 with Master Mode and package error checking (PEC) options per the SBSspecification.
The bq20z90 detects an SMBus off state when SMBC and SMBD are logic-low for ≥2 seconds. Clearing thisstate requires either SMBC or SMBD to transition high. Within 1 ms, the communication bus is available.
Table 1. SBS COMMANDS
SBS Cmd Mode Name Format Size in Min Max Default Value UnitBytes Value Value
0x00 R/W ManufacturerAccess hex 2 0x0000 0xffff —0x01 R/W RemainingCapacityAlarm unsigned int 2 0 65535 300 mAh or10mWh0x02 R/W RemainingTimeAlarm unsigned int 2 0 65535 10 min
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bq20z90
SLUS662A – DECEMBER 2005 – REVISED JUNE 2006
FEATURE SET (continued)Table 1. SBS COMMANDS (continued)
SBS Cmd Mode Name Format Size in Min Max Default Value UnitBytes Value Value
0x03 R/W BatteryMode hex 2 0x0000 0xe383 —0x04 R/W AtRate signed int 2 -32768 32767 — mA or 10mW0x05 R AtRateTimeToFull unsigned int 2 0 65534 — min0x06 R AtRateTimeToEmpty unsigned int 2 0 65534 — min0x07 R AtRateOK unsigned int 2 0 65535 —0x08 R Temperature unsigned int 2 0 65535 — 0.1 °K0x09 R Voltage unsigned int 2 0 65535 — mV0x0a R Current signed int 2 -32768 32767 — mA0x0b R AverageCurrent signed int 2 -32768 32767 — mA0x0c R MaxError unsigned int 1 0 100 — %0x0d R RelativeStateOfCharge unsigned int 1 0 100 — %0x0e R AbsoluteStateOfCharge unsigned int 1 0 100+ — %0x0f R/W RemainingCapacity unsigned int 2 0 65535 — mAh or10mWh0x10 R FullChargeCapacity unsigned int 2 0 65535 — mAh or10mWh0x11 R RunTimeToEmpty unsigned int 2 0 65534 — min0x12 R AverageTimeToEmpty unsigned int 2 0 65534 — min0x13 R AverageTimeToFull unsigned int 2 0 65534 — min0x14 R ChargingCurrent unsigned int 2 0 65534 — mA0x15 R ChargingVoltage unsigned int 2 0 65534 — mV0x16 R BatteryStatus unsigned int 2 0x0000 0xdbff —0x17 R/W CycleCount unsigned int 2 0 65535 —0x18 R/W DesignCapacity unsigned int 2 0 65535 4400 mAh or10mWh0x19 R/W DesignVoltage unsigned int 2 0 65535 14400 mV0x1a R/W SpecificationInfo hex 2 0x0000 0xffff 0x00310x1b R/W ManufactureDate unsigned int 2 — — 01-Jan-1980 ASCII0x1c R/W SerialNumber hex 2 0x0000 0xffff 0x00010x20 R/W ManufacturerName String 11+1 — — Texas Inst. ASCII0x21 R/W DeviceName String 7+1 — — bq20z90 ASCII0x22 R/W DeviceChemistry String 4+1 — — LION ASCII0x23 R/W ManufacturerData String 14+1 — — — ASCII0x2f R/W Authenticate String 20+1 — — — ASCII0x3c R CellVoltage4 unsigned int 2 0 65535 — mV0x3d R CellVoltage3 unsigned int 2 0 65535 — mV0x3e R CellVoltage2 unsigned int 2 0 65535 — mV0x3f R CellVoltage1 unsigned int 2 0 65535 — mV
Table 2. EXTENDED SBS COMMANDS
SBS Mode Name Format Size in Min Value Max Value Default UnitCmd Bytes Value
0x45 R AFEData String 11+1 — — — ASCII0x46 R/W FETControl hex 1 0x00 0x1e —0x4f R StateOfHealth unsigned int 1 0 100 — %0x50 R SafetyAlert hex 2 0x0000 0xffff —
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bq20z90
SLUS662A – DECEMBER 2005 – REVISED JUNE 2006
Table 2. EXTENDED SBS COMMANDS (continued)
SBS Mode Name Format Size in Min Value Max Value Default UnitCmd Bytes Value
0x51 R SafetyStatus hex 2 0x0000 0xffff —0x52 R PFAlert hex 2 0x0000 0x9fff —0x53 R PFStatus hex 2 0x0000 0x9fff —0x54 R OperationStatus hex 2 0x0000 0xf7f7 —0x55 R ChargingStatus hex 2 0x0000 0xffff —0x57 R ResetData hex 2 0x0000 0xffff —0x58 R WDResetData unsigned int 2 0 65535 —0x5a R PackVoltage unsigned int 2 0 65535 --- mV0x5d R AverageVoltage unsigned int 2 0 65535 — mV0x60 R/W UnSealKey hex 4 0x00000000 0xffffffff —0x61 R/W FullAccessKey hex 4 0x00000000 0xffffffff —0x62 R/W PFKey hex 4 0x00000000 0xffffffff —0x63 R/W AuthenKey3 hex 4 0x00000000 0xffffffff —0x64 R/W AuthenKey2 hex 4 0x00000000 0xffffffff —0x65 R/W AuthenKey1 hex 4 0x00000000 0xffffffff —0x66 R/W AuthenKey0 hex 4 0x00000000 0xffffffff —0x70 R/W ManufacturerInfo String 8+1 — — — ASCII0x71 R/W SenseResistor unsigned int 2 0 65535 — µ Ω0x77 R/W DataFlashSubClassID hex 2 0x0000 0xffff —0x78 R/W DataFlashSubClassPage1 hex 32 — — —0x79 R/W DataFlashSubClassPage2 hex 32 — — —0x7a R/W DataFlashSubClassPage3 hex 32 — — —0x7b R/W DataFlashSubClassPage4 hex 32 — — —0x7c R/W DataFlashSubClassPage5 hex 32 — — —0x7d R/W DataFlashSubClassPage6 hex 32 — — —0x7e R/W DataFlashSubClassPage7 hex 32 — — —0x7f R/W DataFlashSubClassPage8 hex 32 — — —
NOTE:
All reserved bits in data flash should be set to zero.
Table 3. DATA FLASH VALUESClass Subclass Subclass Offset Name Data Min Max Value Default UnitsID Type Value Value
1st Level 0 Voltage 0 COV Threshold I2 3700 5000 4300 mVSafety
1st Level 0 Voltage 2 COV Time U1 0 60 2 sSafety
1st Level 0 Voltage 3 COV Recovery I2 0 4400 3900 mVSafety
1st Level 0 Voltage 5 COV Delta U1 0 200 20 mVSafety
1st Level 0 Voltage 6 COV Temp. Hys U1 0 250 100 0.1 °CSafety
1st Level 0 Voltage 7 POV Threshold I2 0 18000 17500 mVSafety
1st Level 0 Voltage 9 POV Time U1 0 60 2 sSafety
1st Level 0 Voltage 10 POV Recovery I2 0 17000 16000 mVSafety
1st Level 0 Voltage 12 CUV Threshold I2 0 3500 2200 mVSafety
12
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Table 3. DATA FLASH VALUES (continued)Class Subclass Subclass Offset Name Data Min Max Value Default UnitsID Type Value Value
1st Level 0 Voltage 14 CUV Time U1 0 60 2 sSafety
1st Level 0 Voltage 15 CUV Recovery I2 0 3600 3000 mVSafety
1st Level 0 Voltage 17 PUV Threshold I2 0 16000 11000 mVSafety
1st Level 0 Voltage 19 PUV Time U1 0 60 2 sSafety
1st Level 0 Voltage 20 PUV Recovery I2 0 16000 12000 mVSafety
1st Level 1 Current 0 OC (1st Tier) Chg I2 0 20000 6000 mASafety
1st Level 1 Current 2 OC (1st Tier) Chg Time U1 0 60 2 sSafety
1st Level 1 Current 3 OC Chg Recovery I2 -1000 1000 200 mASafety
1st Level 1 Current 5 OC (1st Tier) Dsg I2 0 20000 6000 mASafety
1st Level 1 Current 7 OC (1st Tier) Dsg Time U1 0 60 2 sSafety
1st Level 1 Current 8 OC Dsg Recovery I2 0 1000 200 mASafety
1st Level 1 Current 10 OC (2nd Tier) Chg I2 0 20000 8000 mASafety
1st Level 1 Current 12 OC (2nd Tier) Chg Time U1 0 60 2 sSafety
1st Level 1 Current 13 OC (2nd Tier) Dsg I2 0 22000 8000 mASafety
1st Level 1 Current 15 OC (2nd Tier) Dsg Time U1 0 60 2 sSafety
1st Level 1 Current 16 Current Recovery Time U1 0 60 8 sSafety
1st Level 1 Current 17 AFE OC Dsg H1 0x00 0x1f 0x12Safety
1st Level 1 Current 18 AFE OC Dsg Time H1 0x00 0x0f 0x0fSafety
1st Level 1 Current 19 AFE OC Dsg Recovery I2 10 1000 5 mASafety
1st Level 1 Current 21 AFE SC Chg Cfg H1 0x00 0xff 0x77Safety
1st Level 1 Current 22 AFE SC Dsg Cfg H1 0x00 0xff 0x77Safety
1st Level 1 Current 23 AFE SC Recovery I2 0 200 1 mASafety
1st Level 2 Temperature 0 Over Temp Chg I2 0 1200 550 0.1 °CSafety
1st Level 2 Temperature 2 OT Chg Time U1 0 60 2 sSafety
1st Level 2 Temperature 3 OT Chg Recovery I2 0 1200 500 0.1 °CSafety
1st Level 2 Temperature 5 Over Temp Dsg I2 0 1200 600 0.1 °CSafety
1st Level 2 Temperature 7 OT Dsg Time U1 0 60 2 sSafety
1st Level 2 Temperature 8 OT Dsg Recovery I2 0 1200 550 0.1 °CSafety
1st Level 3 Host Comm 0 Host Watchdog Timeout U1 0 255 0 sSafety
2nd Level 16 Voltage 0 SOV Threshold I2 0 20000 18000 mVSafety
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Table 3. DATA FLASH VALUES (continued)Class Subclass Subclass Offset Name Data Min Max Value Default UnitsID Type Value Value
2nd Level 16 Voltage 2 SOV Time U1 0 30 0 sSafety
2nd Level 16 Voltage 3 Cell Imbalance Current I1 0 200 5 mASafety
2nd Level 16 Voltage 4 Cell Imbalance Fail Voltage I2 0 5000 1000 mVSafety
2nd Level 16 Voltage 6 Cell Imbalance Time U1 0 30 0 sSafety
2nd Level 16 Voltage 7 Battery Rest Time U2 0 65535 1800 sSafety
2nd Level 16 Voltage 9 PFIN Detect Time U1 0 30 0 sSafety
2nd Level 17 Current 0 SOC Chg I2 0 30000 10000 mASafety
2nd Level 17 Current 2 SOC Chg Time U1 0 30 0 sSafety
2nd Level 17 Current 3 SOC Dsg I2 0 30000 10000 mASafety
2nd Level 17 Current 5 SOC Dsg Time U1 0 30 0 sSafety
2nd Level 18 Temperature 0 SOT Chg I2 0 1200 650 0.1 °CSafety
2nd Level 18 Temperature 2 SOT Chg Time U1 0 30 0 sSafety
2nd Level 18 Temperature 3 SOT Dsg I2 0 1200 750 0.1 °CSafety
2nd Level 18 Temperature 5 SOT Dsg Time U1 0 30 0 sSafety
2nd Level 18 Temperature 6 Open Thermistor I2 -1000 1200 -333 0.1 °CSafety
2nd Level 18 Temperature 8 Open Time I1 0 30 0 sSafety
2nd Level 19 FET Verification 0 FET Fail Limit I2 0 500 20 mASafety
2nd Level 19 FET Verification 2 FET Fail Time U1 0 30 0 sSafety
2nd Level 20 AFE Verification 0 AFE Check Time U1 0 255 0 sSafety
2nd Level 20 AFE Verification 1 AFE Fail Limit U1 0 255 10Safety
2nd Level 20 AFE Verification 2 AFE Fail Recovery Time U1 0 255 20 sSafety
2nd Level 20 AFE Verification 3 AFE Init Retry Limit U1 0 255 6Safety
2nd Level 20 AFE Verification 4 AFE Init Limit U1 0 255 20Safety
2nd Level 21 Fuse Verification 0 Fuse Fail Limit I2 0 20 2 mASafety
2nd Level 21 Fuse Verification 2 Fuse Fail Time U1 0 30 0 sSafety
Charge Control 32 Charge Inhibit Cfg 0 Chg Inhibit Temp Low I2 -400 1200 0 0.1 °C
Charge Control 32 Charge Inhibit Cfg 2 Chg Inhibit Temp High I2 -400 1200 450 0.1 °C
Charge Control 32 Charge Inhibit Cfg 4 Temp Hys I2 0 100 10 0.1 °C
Charge Control 33 Pre-Charge Cfg 0 Pre-chg Current I2 0 2000 250 mA
Charge Control 33 Pre-Charge Cfg 2 Pre-chg Temp I2 -400 1200 120 0.1 °C
Charge Control 33 Pre-Charge Cfg 4 Pre-chg Voltage I2 0 20000 3000 mV
Charge Control 33 Pre-Charge Cfg 6 Recovery Voltage I2 0 20000 3100 mV
Charge Control 34 Fast Charge Cfg 0 Fast Charge Current I2 0 10000 4000 mA
Charge Control 34 Fast Charge Cfg 2 Charging Voltage I2 0 20000 16800 mV
14
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Table 3. DATA FLASH VALUES (continued)Class Subclass Subclass Offset Name Data Min Max Value Default UnitsID Type Value Value
Charge Control 34 Fast Charge Cfg 4 Delta Temp I2 0 500 50 0.1 °C
Charge Control 34 Fast Charge Cfg 6 Suspend Low Temp I2 -400 1200 -50 0.1 °C
Charge Control 34 Fast Charge Cfg 8 Suspend High Temp I2 -400 1200 550 0.1 °C
Charge Control 35 Pulse Charge Cfg 0 Turn ON Voltage I2 0 5000 4150 mV
Charge Control 35 Pulse Charge Cfg 2 Turn OFF Voltage I2 0 5000 4250 mV
Charge Control 35 Pulse Charge Cfg 4 Max ON Pulse Time U1 0 240 240 Seconds/4
Charge Control 35 Pulse Charge Cfg 5 Min OFF Pulse Time U1 0 240 0 Seconds/4
Charge Control 35 Pulse Charge Cfg 6 Max OFF Voltage I2 0 5000 4270 mV
Charge Control 36 Termination Cfg. 0 Maintenance Current I2 0 1000 0 mA
Charge Control 36 Termination Cfg. 2 Taper Current I2 0 1000 250 mA
Charge Control 36 Termination Cfg. 6 Taper Voltage I2 0 1000 300 mV
Charge Control 36 Termination Cfg. 8 Current Taper Window U1 0 60 40 s
Charge Control 36 Termination Cfg. 9 TCA Set % I1 -1 100 -1 %
Charge Control 36 Termination Cfg. 10 TCA Clear % I1 -1 100 95 %
Charge Control 36 Termination Cfg. 11 FC Set % I1 -1 100 -1 %
Charge Control 36 Termination Cfg. 12 FC Clear % I1 -1 100 98 %
Charge Control 37 Cell Balancing Cfg 0 Min Cell Deviation U2 0 65535 1750 s/mAh
Charge Control 38 Charging Faults 0 Over Charging Voltage I2 0 3000 500 mV
Charge Control 38 Charging Faults 2 Over Charging Volt Time U1 0 60 2 s
Charge Control 38 Charging Faults 3 Over Charging Current I2 0 2000 500 mA
Charge Control 38 Charging Faults 5 Over Charging Curr Time U1 0 60 2 s
Charge Control 38 Charging Faults 6 Over Charging Curr Recov I2 0 2000 100 mA
Charge Control 38 Charging Faults 8 Depleted Voltage I2 0 16000 8000 mV
Charge Control 38 Charging Faults 10 Depleted Voltage Time U1 0 60 2 s
Charge Control 38 Charging Faults 11 Depleted Recovery I2 0 16000 8500 mV
Charge Control 38 Charging Faults 13 Over Charge Capacity I2 0 4000 300 mAh
Charge Control 38 Charging Faults 15 Over Charge Recovery I2 0 100 2 mAh
Charge Control 38 Charging Faults 17 FC-MTO U2 0 65535 10800 s
Charge Control 38 Charging Faults 19 PC-MTO U2 0 65535 3600 s
Charge Control 38 Charging Faults 21 Charge Fault Cfg H1 0x00 0x3f 0x00
SBS 48 Data 0 Rem Cap Alarm I2 0 700 300 mAhConfiguration
SBS 48 Data 2 Rem Energy Alarm I2 0 1000 432 10mWConfiguration
SBS 48 Data 4 Rem Time Alarm U2 0 30 10 minConfiguration
SBS 48 Data 6 Init Battery Mode H2 0x0000 0xffff 0x0081Configuration
SBS 48 Data 8 Design Voltage I2 7000 18000 14400 mVConfiguration
SBS 48 Data 10 Spec Info H2 0x0000 0xffff 0x0031Configuration
SBS 48 Data 12 Manuf Date U2 0 65535 0 Day +Configuration Mo*32 +(Yr
-
1980)*256
SBS 48 Data 14 Ser. Num. H2 0x0000 0xffff 0x0001Configuration
SBS 48 Data 16 Cycle Count U2 0 65535 0 CountConfiguration
SBS 48 Data 18 CC Threshold I2 100 32767 4400 mAhConfiguration
SBS 48 Data 20 CC % U1 0 100 90 %Configuration
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Table 3. DATA FLASH VALUES (continued)Class Subclass Subclass Offset Name Data Min Max Value Default UnitsID Type Value Value
SBS 48 Data 21 CF MaxError Limit U1 0 100 100 %Configuration
SBS 48 Data 22 Design Capacity I2 0 65535 4400 mAhConfiguration
SBS 48 Data 24 Design Energy I2 0 65535 6336 10mWConfiguration
SBS 48 Data 26 Manuf Name S12 - - Texas Inst. ASCIIConfiguration
SBS 48 Data 38 Device Name S8 - - bq20z90 ASCIIConfiguration
SBS 48 Data 46 Device Chemistry S5 - - LION ASCIIConfiguration
SBS 49 Configuration 0 TDA Set % I1 -1 100 6 %Configuration
SBS 49 Configuration 1 TDA Clear % I1 -1 100 8 %Configuration
SBS 49 Configuration 2 FD Set % I1 -1 100 2 %Configuration
SBS 49 Configuration 3 FD Clear % I1 -1 100 5 %Configuration
SBS 49 Configuration 4 TDA Set Volt Threshold I2 0 16800 5000 mVConfiguration
SBS 49 Configuration 6 TDA Set Volt Time U1 0 60 5 sConfiguration
SBS 49 Configuration 7 TDA Clear Volt I2 0 16800 5500 mVConfiguration
SBS 49 Configuration 9 FD Set Volt Threshold I2 0 16800 5000 mVConfiguration
SBS 49 Configuration 11 FD Volt Time U1 0 60 5 sConfiguration
SBS 49 Configuration 12 FD Clear Volt I2 0 16800 5500 mVConfiguration
System Data 56 Manufacturer Data 0 Pack Lot Code H2 0x0000 0xffff 0x0000
System Data 56 Manufacturer Data 2 PCB Lot Code H2 0x0000 0xffff 0x0000
System Data 56 Manufacturer Data 4 Firmware Version H2 0x0000 0xffff 0x0000
System Data 56 Manufacturer Data 6 Hardware Revision H2 0x0000 0xffff 0x0000
System Data 56 Manufacturer Data 8 Cell Revision H2 0x0000 0xffff 0x0000
System Data 58 Manufacturer Info 0 Manuf. Info S9 - - 12345678
System Data 59 Lifetime Data 0 Lifetime Max Temp I2 0 1400 300 0.1 °C
System Data 59 Lifetime Data 2 Lifetime Min Temp I2 -600 1400 200 0.1 °C
System Data 59 Lifetime Data 4 Lifetime Max Cell Voltage I2 0 32767 3500 mV
System Data 59 Lifetime Data 6 Lifetime Min Cell Voltage I2 0 32767 3200 mV
System Data 59 Lifetime Data 8 Lifetime Max Pack Voltage I2 0 32767 14000 mV
System Data 59 Lifetime Data 10 Lifetime Min Pack Voltage I2 0 32767 12800 mV
System Data 59 Lifetime Data 12 Lifetime Max Chg Current I2 -32768 32767 1500 mA
System Data 59 Lifetime Data 14 Lifetime Max Dsg Current I2 -32768 32767 -3000 mA
System Data 59 Lifetime Data 16 Lifetime Max Chg Power I2 -32768 32767 1500 cWatt
System Data 59 Lifetime Data 18 Lifetime Max Dsg Power I2 -32768 32767 -1500 cWatt
System Data 59 Lifetime Data 22 Life Max AvgDsg Cur I2 -32768 32767 -1000 mA
System Data 59 Lifetime Data 26 Life Max AvgDsg Pow I2 -32768 32767 -1500 cW
System Data 59 Lifetime Data 28 Lifetime Avg Temp I2 -40 1400 250 0.1 °C
System Data 60 Lifetime Temp 0 LT Temp Samples I4 0 140000000 0 CountSamples
Configuration 64 Registers 0 Operation Cfg A H2 0x0000 0xffff 0x0f29
Configuration 64 Registers 2 Operation Cfg B H2 0x0000 0xffff 0x6440
Configuration 64 Registers 4 Operation Cfg C H2 0x0000 0xffff 0x0000
16
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Table 3. DATA FLASH VALUES (continued)Class Subclass Subclass Offset Name Data Min Max Value Default UnitsID Type Value Value
Configuration 64 Registers 6 Permanent Fail Cfg H2 0x0000 0xffff 0x0000
Configuration 64 Registers 8 Non-Removable Cfg H2 0x0000 0xffff 0x0000
LED Support 67 LED Cfg 0 LED Flash Rate U2 0 65535 512 500us
LED Support 67 LED Cfg 2 LED Blink Rate U2 0 65535 1024 500us
LED Support 67 LED Cfg 4 LED Delay U2 1 65535 100 500us
LED Support 67 LED Cfg 6 LED Hold Time U1 0 255 4 sec
LED Support 67 LED Cfg 7 CHG Flash Alarm I1 -1 101 10 %
LED Support 67 LED Cfg 8 CHG Thresh 1 I1 -1 101 0 %
LED Support 67 LED Cfg 9 CHG Thresh 2 I1 -1 101 20 %
LED Support 67 LED Cfg 10 CHG Thresh 3 I1 -1 101 40 %
LED Support 67 LED Cfg 11 CHG Thresh 4 I1 -1 101 60 %
LED Support 67 LED Cfg 12 CHG Thresh 5 I1 -1 101 80 %
LED Support 67 LED Cfg 13 DSG Flash Alarm I1 -1 101 10 %
LED Support 67 LED Cfg 14 DSG Thresh 1 I1 -1 101 0 %
LED Support 67 LED Cfg 15 DSG Thresh 2 I1 -1 101 20 %
LED Support 67 LED Cfg 16 DSG Thresh 3 I1 -1 101 40 %
LED Support 67 LED Cfg 17 DSG Thresh 4 I1 -1 101 60 %
LED Support 67 LED Cfg 18 DSG Thresh 5 I1 -1 101 80 %
LED Support 67 LED Cfg 19 Sink Current U1 0 3 3
Power 68 Power 0 Flash Update OK Voltage I2 6000 20000 7500 mV
Power 68 Power 2 Shutdown Voltage I2 5000 20000 7000 mV
Power 68 Power 4 Shutdown Time U1 0 60 10 s
Power 68 Power 5 Charger Present I2 0 23000 3000 mV
Power 68 Power 7 Sleep Current I2 0 100 10 mA
Power 68 Power 9 Bus Low Time U1 0 255 5 s
Power 68 Power 10 Cal Inhibit Temp Low I2 -400 1200 50 0.1 °C
Power 68 Power 12 Cal Inhibit Temp High I2 -400 1200 450 0.1 °C
Power 68 Power 14 Sleep Voltage Time U1 0 100 5 s
Power 68 Power 15 Sleep Current Time U1 0 255 20 s
Power 68 Power 16 Wake Current Reg H1 0x00 0x07 0x00
Gas Gauging 80 IT Cfg 0 Load Select U1 0 255 3
Gas Gauging 80 IT Cfg 1 Load Mode U1 0 255 0
Gas Gauging 80 IT Cfg 45 Term Voltage I2 -32768 32767 12000 mV
Gas Gauging 80 IT Cfg 60 User Rate-mA I2 2000 9000 0 mA
Gas Gauging 80 IT Cfg 62 User Rate-mW I2 3000 14000 0 10mW
Gas Gauging 80 IT Cfg 64 Reserve Cap-mAh I2 0 9000 0 mAh
Gas Gauging 80 IT Cfg 66 Reserve Cap-mWh I2 0 14000 0 10mWh
Gas Gauging 81 Current 0 Dsg Current Threshold I2 0 2000 100 mAThresholds
Gas Gauging 81 Current 2 Chg Current Threshold I2 0 2000 50 mAThresholds
Gas Gauging 81 Current 4 Quit Current I2 0 1000 10 mAThresholds
Gas Gauging 81 Current 6 Dsg Relax Time U1 0 255 1 sThresholds
Gas Gauging 81 Current 7 Chg Relax Time U1 0 255 60 sThresholds
Gas Gauging 82 State 0 Qmax Cell 0 I2 0 32767 4400 mAh
Gas Gauging 82 State 2 Qmax Cell 1 I2 0 32767 4400 mAh
Gas Gauging 82 State 4 Qmax Cell 2 I2 0 32767 4400 mAh
Gas Gauging 82 State 6 Qmax Cell 3 I2 0 32767 4400 mAh
Gas Gauging 82 State 8 Qmax Pack I2 0 32767 4400 mAh
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Table 3. DATA FLASH VALUES (continued)Class Subclass Subclass Offset Name Data Min Max Value Default UnitsID Type Value Value
Gas Gauging 82 State 12 Update Status H1 0x00 0x03 0x00
Gas Gauging 82 State 21 Avg I Last Run I2 -32768 32767 -2000 mA
Gas Gauging 82 State 23 Avg P Last Run I2 -32768 32767 -3022 cWatt
Gas Gauging 82 State 25 Delta Voltage I2 -32768 32767 0 mV
Ra Table 88 R_a0 0 Cell0 R_a flag H2 0x0000 0x0000 0xff55
Ra Table 88 R_a0 2 Cell0 R_a 0 I2 183 183 160 2^-10 Ω
Ra Table 88 R_a0 4 Cell0 R_a 1 I2 181 181 166 2^-10 Ω
Ra Table 88 R_a0 6 Cell0 R_a 2 I2 198 198 153 2^-10 Ω
Ra Table 88 R_a0 8 Cell0 R_a 3 I2 244 244 151 2^-10 Ω
Ra Table 88 R_a0 10 Cell0 R_a 4 I2 254 254 145 2^-10 Ω
Ra Table 88 R_a0 12 Cell0 R_a 5 I2 261 261 152 2^-10 Ω
Ra Table 88 R_a0 14 Cell0 R_a 6 I2 333 333 176 2^-10 Ω
Ra Table 88 R_a0 16 Cell0 R_a 7 I2 338 338 204 2^-10 Ω
Ra Table 88 R_a0 18 Cell0 R_a 8 I2 345 345 222 2^-10 Ω
Ra Table 88 R_a0 20 Cell0 R_a 9 I2 350 350 254 2^-10 Ω
Ra Table 88 R_a0 22 Cell0 R_a 10 I2 382 382 315 2^-10 Ω
Ra Table 88 R_a0 24 Cell0 R_a 11 I2 429 429 437 2^-10 Ω
Ra Table 88 R_a0 26 Cell0 R_a 12 I2 502 502 651 2^-10 Ω
Ra Table 88 R_a0 28 Cell0 R_a 13 I2 545 545 1001 2^-10 Ω
Ra Table 88 R_a0 30 Cell0 R_a 14 I2 366 366 1458 2^-10 Ω
Ra Table 89 R_a1 0 Cell1 R_a flag H2 0x0000 0x0000 0xff55
Ra Table 89 R_a1 2 Cell1 R_a 0 I2 183 183 160 2^-10 Ω
Ra Table 89 R_a1 4 Cell1 R_a 1 I2 181 181 166 2^-10 Ω
Ra Table 89 R_a1 6 Cell1 R_a 2 I2 198 198 153 2^-10 Ω
Ra Table 89 R_a1 8 Cell1 R_a 3 I2 244 244 151 2^-10 Ω
Ra Table 89 R_a1 10 Cell1 R_a 4 I2 254 254 145 2^-10 Ω
Ra Table 89 R_a1 12 Cell1 R_a 5 I2 261 261 152 2^-10 Ω
Ra Table 89 R_a1 14 Cell1 R_a 6 I2 333 333 176 2^-10 Ω
Ra Table 89 R_a1 16 Cell1 R_a 7 I2 338 338 204 2^-10 Ω
Ra Table 89 R_a1 18 Cell1 R_a 8 I2 345 345 222 2^-10 Ω
Ra Table 89 R_a1 20 Cell1 R_a 9 I2 350 350 254 2^-10 Ω
Ra Table 89 R_a1 22 Cell1 R_a 10 I2 382 382 315 2^-10 Ω
Ra Table 89 R_a1 24 Cell1 R_a 11 I2 429 429 437 2^-10 Ω
Ra Table 89 R_a1 26 Cell1 R_a 12 I2 502 502 651 2^-10 Ω
Ra Table 89 R_a1 28 Cell1 R_a 13 I2 545 545 1001 2^-10 Ω
Ra Table 89 R_a1 30 Cell1 R_a 14 I2 366 366 1458 2^-10 Ω
Ra Table 90 R_a2 0 Cell2 R_a flag H2 0x0000 0x0000 0xff55
Ra Table 90 R_a2 2 Cell2 R_a 0 I2 183 183 160 2^-10 Ω
Ra Table 90 R_a2 4 Cell2 R_a 1 I2 181 181 166 2^-10 Ω
Ra Table 90 R_a2 6 Cell2 R_a 2 I2 198 198 153 2^-10 Ω
Ra Table 90 R_a2 8 Cell2 R_a 3 I2 244 244 151 2^-10 Ω
Ra Table 90 R_a2 10 Cell2 R_a 4 I2 254 254 145 2^-10 Ω
Ra Table 90 R_a2 12 Cell2 R_a 5 I2 261 261 152 2^-10 Ω
Ra Table 90 R_a2 14 Cell2 R_a 6 I2 333 333 176 2^-10 Ω
Ra Table 90 R_a2 16 Cell2 R_a 7 I2 338 338 204 2^-10 Ω
Ra Table 90 R_a2 18 Cell2 R_a 8 I2 345 345 222 2^-10 Ω
Ra Table 90 R_a2 20 Cell2 R_a 9 I2 350 350 254 2^-10 Ω
Ra Table 90 R_a2 22 Cell2 R_a 10 I2 382 382 315 2^-10 Ω
Ra Table 90 R_a2 24 Cell2 R_a 11 I2 429 429 437 2^-10 Ω
Ra Table 90 R_a2 26 Cell2 R_a 12 I2 502 502 651 2^-10 Ω
18
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Table 3. DATA FLASH VALUES (continued)Class Subclass Subclass Offset Name Data Min Max Value Default UnitsID Type Value Value
Ra Table 90 R_a2 28 Cell2 R_a 13 I2 545 545 1001 2^-10 Ω
Ra Table 90 R_a2 30 Cell2 R_a 14 I2 366 366 1458 2^-10 Ω
Ra Table 91 R_a3 0 Cell3 R_a flag H2 0x0 0x0 0xff55
Ra Table 91 R_a3 2 Cell3 R_a 0 I2 183 183 160 2^-10 Ω
Ra Table 91 R_a3 4 Cell3 R_a 1 I2 181 181 166 2^-10 Ω
Ra Table 91 R_a3 6 Cell3 R_a 2 I2 198 198 153 2^-10 Ω
Ra Table 91 R_a3 8 Cell3 R_a 3 I2 244 244 151 2^-10 Ω
Ra Table 91 R_a3 10 Cell3 R_a 4 I2 254 254 145 2^-10 Ω
Ra Table 91 R_a3 12 Cell3 R_a 5 I2 261 261 152 2^-10 Ω
Ra Table 91 R_a3 14 Cell3 R_a 6 I2 333 333 176 2^-10 Ω
Ra Table 91 R_a3 16 Cell3 R_a 7 I2 338 338 204 2^-10 Ω
Ra Table 91 R_a3 18 Cell3 R_a 8 I2 345 345 222 2^-10 Ω
Ra Table 91 R_a3 20 Cell3 R_a 9 I2 350 350 254 2^-10 Ω
Ra Table 91 R_a3 22 Cell3 R_a 10 I2 382 382 315 2^-10 Ω
Ra Table 91 R_a3 24 Cell3 R_a 11 I2 429 429 437 2^-10 Ω
Ra Table 91 R_a3 26 Cell3 R_a 12 I2 502 502 651 2^-10 Ω
Ra Table 91 R_a3 28 Cell3 R_a 13 I2 545 545 1001 2^-10 Ω
Ra Table 91 R_a3 30 Cell3 R_a 14 I2 366 366 1458 2^-10 Ω
Ra Table 92 R_a0x 0 xCell0 R_a flag H2 0xffff 0xffff 0xffff
Ra Table 92 R_a0x 2 xCell0 R_a 0 I2 183 183 160 2^-10 Ω
Ra Table 92 R_a0x 4 xCell0 R_a 1 I2 181 181 166 2^-10 Ω
Ra Table 92 R_a0x 6 xCell0 R_a 2 I2 198 198 153 2^-10 Ω
Ra Table 92 R_a0x 8 xCell0 R_a 3 I2 244 244 151 2^-10 Ω
Ra Table 92 R_a0x 10 xCell0 R_a 4 I2 254 254 145 2^-10 Ω
Ra Table 92 R_a0x 12 xCell0 R_a 5 I2 261 261 152 2^-10 Ω
Ra Table 92 R_a0x 14 xCell0 R_a 6 I2 333 333 176 2^-10 Ω
Ra Table 92 R_a0x 16 xCell0 R_a 7 I2 338 338 204 2^-10 Ω
Ra Table 92 R_a0x 18 xCell0 R_a 8 I2 345 345 222 2^-10 Ω
Ra Table 92 R_a0x 20 xCell0 R_a 9 I2 350 350 254 2^-10 Ω
Ra Table 92 R_a0x 22 xCell0 R_a 10 I2 382 382 315 2^-10 Ω
Ra Table 92 R_a0x 24 xCell0 R_a 11 I2 429 429 437 2^-10 Ω
Ra Table 92 R_a0x 26 xCell0 R_a 12 I2 502 502 651 2^-10 Ω
Ra Table 92 R_a0x 28 xCell0 R_a 13 I2 545 545 1001 2^-10 Ω
Ra Table 92 R_a0x 30 xCell0 R_a 14 I2 366 366 1458 2^-10 Ω
Ra Table 93 R_a1x 0 xCell1 R_a flag H2 0xffff 0xffff 0xffff
Ra Table 93 R_a1x 2 xCell1 R_a 0 I2 183 183 160 2^-10 Ω
Ra Table 93 R_a1x 4 xCell1 R_a 1 I2 181 181 166 2^-10 Ω
Ra Table 93 R_a1x 6 xCell1 R_a 2 I2 198 198 153 2^-10 Ω
Ra Table 93 R_a1x 8 xCell1 R_a 3 I2 244 244 151 2^-10 Ω
Ra Table 93 R_a1x 10 xCell1 R_a 4 I2 254 254 145 2^-10 Ω
Ra Table 93 R_a1x 12 xCell1 R_a 5 I2 261 261 152 2^-10 Ω
Ra Table 93 R_a1x 14 xCell1 R_a 6 I2 333 333 176 2^-10 Ω
Ra Table 93 R_a1x 16 xCell1 R_a 7 I2 338 338 204 2^-10 Ω
Ra Table 93 R_a1x 18 xCell1 R_a 8 I2 345 345 222 2^-10 Ω
Ra Table 93 R_a1x 20 xCell1 R_a 9 I2 350 350 254 2^-10 Ω
Ra Table 93 R_a1x 22 xCell1 R_a 10 I2 382 382 315 2^-10 Ω
Ra Table 93 R_a1x 24 xCell1 R_a 11 I2 429 429 437 2^-10 Ω
Ra Table 93 R_a1x 26 xCell1 R_a 12 I2 502 502 651 2^-10 Ω
Ra Table 93 R_a1x 28 xCell1 R_a 13 I2 545 545 1001 2^-10 Ω
Ra Table 93 R_a1x 30 xCell1 R_a 14 I2 366 366 1458 2^-10 Ω
19Submit Documentation Feedback
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bq20z90
SLUS662A – DECEMBER 2005 – REVISED JUNE 2006
Table 3. DATA FLASH VALUES (continued)Class Subclass Subclass Offset Name Data Min Max Value Default UnitsID Type Value Value
Ra Table 94 R_a2x 0 xCell2 R_a flag H2 0xffff 0xffff 0xffff
Ra Table 94 R_a2x 2 xCell2 R_a 0 I2 183 183 160 2^-10 Ω
Ra Table 94 R_a2x 4 xCell2 R_a 1 I2 181 181 166 2^-10 Ω
Ra Table 94 R_a2x 6 xCell2 R_a 2 I2 198 198 153 2^-10 Ω
Ra Table 94 R_a2x 8 xCell2 R_a 3 I2 244 244 151 2^-10 Ω
Ra Table 94 R_a2x 10 xCell2 R_a 4 I2 254 254 145 2^-10 Ω
Ra Table 94 R_a2x 12 xCell2 R_a 5 I2 261 261 152 2^-10 Ω
Ra Table 94 R_a2x 14 xCell2 R_a 6 I2 333 333 176 2^-10 Ω
Ra Table 94 R_a2x 16 xCell2 R_a 7 I2 338 338 204 2^-10 Ω
Ra Table 94 R_a2x 18 xCell2 R_a 8 I2 345 345 222 2^-10 Ω
Ra Table 94 R_a2x 20 xCell2 R_a 9 I2 350 350 254 2^-10 Ω
Ra Table 94 R_a2x 22 xCell2 R_a 10 I2 382 382 315 2^-10 Ω
Ra Table 94 R_a2x 24 xCell2 R_a 11 I2 429 429 437 2^-10 Ω
Ra Table 94 R_a2x 26 xCell2 R_a 12 I2 502 502 651 2^-10 Ω
Ra Table 94 R_a2x 28 xCell2 R_a 13 I2 545 545 1001 2^-10 Ω
Ra Table 94 R_a2x 30 xCell2 R_a 14 I2 366 366 1458 2^-10 Ω
Ra Table 95 R_a3x 0 xCell3 R_a flag H2 0xffff 0xffff 0xffff
Ra Table 95 R_a3x 2 xCell3 R_a 0 I2 183 183 160 2^-10 Ω
Ra Table 95 R_a3x 4 xCell3 R_a 1 I2 181 181 166 2^-10 Ω
Ra Table 95 R_a3x 6 xCell3 R_a 2 I2 198 198 153 2^-10 Ω
Ra Table 95 R_a3x 8 xCell3 R_a 3 I2 244 244 151 2^-10 Ω
Ra Table 95 R_a3x 10 xCell3 R_a 4 I2 254 254 145 2^-10 Ω
Ra Table 95 R_a3x 12 xCell3 R_a 5 I2 261 261 152 2^-10 Ω
Ra Table 95 R_a3x 14 xCell3 R_a 6 I2 333 333 176 2^-10 Ω
Ra Table 95 R_a3x 16 xCell3 R_a 7 I2 338 338 204 2^-10 Ω
Ra Table 95 R_a3x 18 xCell3 R_a 8 I2 345 345 222 2^-10 Ω
Ra Table 95 R_a3x 20 xCell3 R_a 9 I2 350 350 254 2^-10 Ω
Ra Table 95 R_a3x 22 xCell3 R_a 10 I2 382 382 315 2^-10 Ω
Ra Table 95 R_a3x 24 xCell3 R_a 11 I2 429 429 437 2^-10 Ω
Ra Table 95 R_a3x 26 xCell3 R_a 12 I2 502 502 651 2^-10 Ω
Ra Table 95 R_a3x 28 xCell3 R_a 13 I2 545 545 1001 2^-10 Ω
Ra Table 95 R_a3x 30 xCell3 R_a 14 I2 366 366 1458 2^-10 Ω
PF Status 96 Device Status 0 PF Flags 1 H2 0x0000 0x6fff 0x0000Data
PF Status 96 Device Status 2 Fuse Flag H2 0x0000 0xffff 0x0000Data
PF Status 96 Device Status 4 PF Voltage I2 0 32767 0 mVData
PF Status 96 Device Status 6 PF C4 Voltage I2 0 9999 0 mVData
PF Status 96 Device Status 8 PF C3 Voltage I2 0 9999 0 mVData
PF Status 96 Device Status 10 PF C2 Voltage I2 0 9999 0 mVData
PF Status 96 Device Status 12 PF C1 Voltage I2 0 9999 0 mVData
PF Status 96 Device Status 14 PF Current I2 -32768 32767 0 mAData
PF Status 96 Device Status 16 PF Temperature I2 -9999 9999 0 0.1 KData
PF Status 96 Device Status 18 PF Batt Stat H2 0x0000 0xffff 0x0000Data
PF Status 96 Device Status 20 PF RC-mAh I2 0 32767 0 mAhData
20
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SLUS662A – DECEMBER 2005 – REVISED JUNE 2006
Table 3. DATA FLASH VALUES (continued)Class Subclass Subclass Offset Name Data Min Max Value Default UnitsID Type Value Value
PF Status 96 Device Status 22 PF RC-10mWh I2 0 32767 0 cWattHrData
PF Status 96 Device Status 24 PF Chg Status H2 0x0000 0xffff 0x0000Data
PF Status 96 Device Status 26 PF Safety Status H2 0x0000 0xffff 0x0000Data
PF Status 96 Device Status 28 PF Flags 2 H2 0x0000 0x8000 0x0000Data
PF Status 97 AFE Regs 0 AFE Status H1 0x00 0xff 0x00
PF Status 97 AFE Regs 1 AFE Output H1 0x00 0xff 0x00
PF Status 97 AFE Regs 2 AFE State H1 0x00 0xff 0x00
PF Status 97 AFE Regs 3 AFE Function H1 0x00 0xff 0x00
PF Status 97 AFE Regs 4 AFE Cell Select H1 0x00 0xff 0x00
PF Status 97 AFE Regs 5 AFE OLV H1 0x00 0xff 0x00
PF Status 97 AFE Regs 6 AFE OLT H1 0x00 0xff 0x00
PF Status 97 AFE Regs 7 AFE SCC H1 0x00 0xff 0x00
PF Status 97 AFE Regs 8 AFE SCD H1 0x00 0xff 0x00
Calibration 104 Data 0 CC Gain F4 0.1 4 0.9419
Calibration 104 Data 4 CC Delta F4 29826 1193046 280932.6
Calibration 104 Data 8 Ref Voltage I2 0 32767 24500 50 µV
Calibration 104 Data 12 AFE Pack Gain I2 0 32767 22050 µV/cnt
Calibration 104 Data 14 CC Offset I2 -32768 32767 -1667
Calibration 104 Data 16 Board Offset I2 -32767 32767 0
Calibration 104 Data 18 Int Temp Offset I1 -128 127 0
Calibration 104 Data 19 Ext1 Temp Offset I1 -128 127 0
Calibration 104 Data 20 Ext2 Temp Offset I1 -128 127 0
Calibration 105 Config 0 CC Current I2 0 32767 3000 mA
Calibration 105 Config 2 Voltage Signal I2 0 32767 16800 mV
Calibration 105 Config 4 Temp Signal I2 0 32767 2980 0.1 °C
Calibration 105 Config 6 CC Offset Time U2 0 65535 250 ms
Calibration 105 Config 8 ADC Offset Time U2 0 65535 32 ms
Calibration 105 Config 10 CC Gain Time U2 0 65535 250 ms
Calibration 105 Config 12 Voltage Time U2 0 65535 1984 ms
Calibration 105 Config 14 Temperature Time U2 0 65535 32 s
Calibration 105 Config 17 Cal Mode Timeout U2 0 65535 38400 1/128 s
Calibration 106 Temp Model 0 Ext Coef 1 I2 -32768 32767 -28285 s
Calibration 106 Temp Model 2 Ext Coef 2 I2 -32768 32767 20848 s
Calibration 106 Temp Model 4 Ext Coef 3 I2 -32768 32767 -7537 s
Calibration 106 Temp Model 6 Ext Coef 4 I2 -32768 32767 4012 s
Calibration 106 Temp Model 8 Ext Min AD I2 -32768 32767 0 s
Calibration 106 Temp Model 10 Ext Max Temp I2 -32768 32767 4012 s
Calibration 106 Temp Model 12 Int Coef 1 I2 -32768 32767 0 s
Calibration 106 Temp Model 14 Int Coef 2 I2 -32768 32767 0 s
Calibration 106 Temp Model 16 Int Coef 3 I2 -32768 32767 -11136 s
Calibration 106 Temp Model 18 Int Coef 4 I2 -32768 32767 5754 s
Calibration 106 Temp Model 20 Int Min AD I2 -32768 32767 0 s
Calibration 106 Temp Model 22 Int Max Temp I2 -32768 32767 5754 s
Calibration 107 Current 0 Filter U1 0 255 239
Calibration 107 Current 1 Deadband U1 0 255 3 mA
Calibration 107 Current 2 CC Deadband U1 0 255 34 294 nV
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PACKAGING INFORMATION
Orderable Device Status (1) Package
Type Package
Drawing Pins Package
Qty Eco Plan (2) Lead/Ball Finish MSL Peak Temp (3)
BQ20Z90DBT NRND TSSOP DBT 30 60 Green (RoHS &
no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR
BQ20Z90DBTG4 NRND TSSOP DBT 30 60 Green (RoHS &
no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR
BQ20Z90DBTR NRND TSSOP DBT 30 2000 Green (RoHS &
no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR
BQ20Z90DBTRG4 NRND TSSOP DBT 30 2000 Green (RoHS &
no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR
(1) The marketing status values are defined as follows:
ACTIVE: Product device recommended for new designs.
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in
a new design.
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
OBSOLETE: TI has discontinued the production of the device.
(2) Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check
http://www.ti.com/productcontent for the latest availability information and additional product content details.
TBD: The Pb-Free/Green conversion plan has not been defined.
Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements
for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered
at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.
Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and
package, or 2) lead-based die adhesive used between the die and leadframe. The component is otherwise considered Pb-Free (RoHS
compatible) as defined above.
Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame
retardants (Br or Sb do not exceed 0.1% by weight in homogeneous material)
(3) MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder
temperature.
Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is
provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the
accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and continues to take
reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on
incoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited
information may not be available for release.
In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI
to Customer on an annual basis.
PACKAGE OPTION ADDENDUM
www.ti.com 3-Jul-2009
Addendum-Page 1
TAPE AND REEL INFORMATION
*All dimensions are nominal
Device Package
Type Package
Drawing Pins SPQ Reel
Diameter
(mm)
Reel
Width
W1 (mm)
A0
(mm) B0
(mm) K0
(mm) P1
(mm) W
(mm) Pin1
Quadrant
BQ20Z90DBTR TSSOP DBT 30 2000 330.0 16.4 6.95 8.3 1.6 8.0 16.0 Q1
PACKAGE MATERIALS INFORMATION
www.ti.com 14-Jul-2012
Pack Materials-Page 1
*All dimensions are nominal
Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm)
BQ20Z90DBTR TSSOP DBT 30 2000 367.0 367.0 38.0
PACKAGE MATERIALS INFORMATION
www.ti.com 14-Jul-2012
Pack Materials-Page 2
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