Datasheet bq20z90D Datasheet (Texas Instruments)

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SLUS662A – DECEMBER 2005 – REVISED JUNE 2006

SBS 1.1-COMPLIANT GAS GAUGE ENABLED WITH IMPEDANCE TRACK™

TECHNOLOGY FOR USE WITH THE bq29330

bq20z90

FEATURES

• Patented Impedance Track™ Technology

• Optional Pulse Charging Feature for

Improved Charge Times

Accurately Measures Available Charge in • Drives 3-, 4- or 5-Segment LED Display for
Li-Ion and Li-Polymer Batteries Remaining Capacity Indication

• Better than 1% Error Over Lifetime of the • Supports SHA-1 Authentication

Battery

• Instant Accuracy – No Learning Cycle

• Lifetime Data Logging

• 30-Pin TSSOP (DBT)

Required

• Automatically adjusts for battery aging,

battery self discharge and temperature
inefficiencies

• Supports the Smart Battery Specification

APPLICATIONS

• Notebook PCs

• Medical and Test Equipment

• Portable Instrumentation

SBS V1.1

• Works With the TI bq29330 Analog Front-End

(AFE) Protection IC to Provide Complete Pack
Electronics Solution

DESCRIPTION

The bq20z90 SBS-compliant gas gauge IC,
incorporating patented Impedance Track™

• Full Array of Programmable Voltage, Current, technology, is designed for battery-pack or in-system

and Temperature Protection Features

• Integrated Time Base Removes Need for

External Crystal with Optional Crystal Input

• Electronics for 7.2-V, 10.8-V or 14.4-V Battery

Packs With 50% Fewer External Components

• Based on a Powerful Low-Power RISC CPU

Core With High-Performance Peripherals

• Integrated Field Programmable FLASH

Memory Eliminates the Need for External
Configuration Memory

• Measures Charge Flow Using a

High-Resolution, 16-Bit Integrating
Delta-Sigma Converter

– Better Than 0.65 nVh of Resolution
– Self-Calibrating

• Uses 16-Bit Delta-Sigma Converter for

Accurate Voltage and Temperature
Measurements

• Extensive Data Reporting Options For

Improved System Interaction

installation. The bq20z90 measures and maintains
an accurate record of available charge in Li-ion or
Li-polymer batteries using its integrated
high-performance analog peripherals. The bq20z90
monitors capacity change, battery impedance,
open-circuit voltage, and other critical parameters of
the battery pack, and reports the information to the
system host controller over a serial-communication
bus. It is designed to work with the bq29330 analog
front-end (AFE) protection IC to maximize
functionality and safety, and minimize component
count and cost in smart battery circuits.

The Impedance Track technology continuously
analyzes the battery impedance, resulting in superior
gas-gauging accuracy. This enables remaining
capacity to be calculated with discharge rate,
temperature, and cell aging all accounted for during
each stage of every cycle.

AVAILABLE OPTIONS

PACKAGE

T

A

–40 ° C to

85 ° C

30-PIN TSSOP (DBT) 30-PIN TSSOP (DBT)

Tube Tape & Reel

bq20z90DBT

(1)

bq20z90DBTR

(2)

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments 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.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.

(1) A single tube quantity is 50 units.
(2) A single reel quantity is 2000 units

Copyright © 2005–2006, Texas Instruments Incorporated

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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 Balancin g 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, Ba t and Pack

Voltage Tran slation

Precharge

Control

Host Inte rface & Data

Mana gement

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

SYSTEM PARTITIONING DIAGRAM

2

TSSOP (DBT)

(TOP VIEW)

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SLUS662A – DECEMBER 2005 – REVISED JUNE 2006

TERMINAL FUNCTIONS

TERMINAL

NO. NAME

1 NC – Not used— leave floating
2 XALERT I Input from bq29330 XALERT output.
3 SDATA I/O Data transfer to and from bq29330
4 SCLK I/O Communication clock to the bq29330
5 CLKOUT O 32.768-kHz output for the bq29330. This pin should be directly connected to the AFE.
6 TS1 I 1stThermistor voltage input connection to monitor temperature
7 TS2 I 2ndThermistor voltage input connection to monitor temperature
8 PRES I Active low input to sense system insertion and typically requires additional ESD protection

9 PFIN I

10 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 bq20z90
12 NC – Not used— leave floating
13 SMBC I/OD SMBus clock open-drain bidirectional pin used to clock the data transfer to and from the bq20z90

14 DISP I
15 NC – Not used— leave floating

16 LED1 O LED1 display segment that drives an external LED depending on the firmware configuration
17 LED2 O LED2 display segment that drives an external LED depending on the firmware configuration
18 LED3 O LED3 display segment that drives an external LED depending on the firmware configuration
19 LED4 O LED4 display segment that drives an external LED depending on the firmware configuration
20 LED5 O LED5 display segment that drives an external LED depending on the firmware configuration
21 VSS – Connected I/O pin to VSS

22 SRP IA

23 SRN IA

24 MRST I
25 VSS P Negative Supply Voltage

26 VCC P Positive Supply Voltage
27 RBI P
28 NC – Not used— leave floating

29 VCELL+ I Input from bq29330 used to read a scaled value of individual cell voltages
30 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

(1)

I/O

Active low input to detect secondary protector output status and allows the bq20z90 to report the
status of the 2ndlevel protection output

Display control for the LEDs. This pin is typically connected to bq29330 REG via a 100-k Ω resistor
and a push-button switch to VSS.

Connections to the top of a small-value sense resistor to monitor the battery charge- and
discharge-current flow

Connections to the bottom of a small-value sense resistor to monitor the battery charge- and
discharge-current flow

Master reset input that forces the device into reset when held low. Must be held high for normal
operation

Backup power to the bq20z90 data registers during periods of low operating voltage. RBI accepts a
storage capacitor or a battery input.

DESCRIPTION

bq20z90

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bq20z90

SLUS662A – DECEMBER 2005 – REVISED JUNE 2006

ABSOLUTE MAXIMUM RATINGS

over operating free-air temperature range (unless otherwise noted)

V

relative to V

CC

V

relative to V

(IOD)

VIrelative to V
T

A

T

stg

SS

SS

SS

Supply voltage range –0.3 V to 2.75 V
Open-drain I/O pins –0.3 V to 6 V
Input voltage range to all other pins –0.3 V to V
Operating free-air temperature range –40 ° C to 85 ° C
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 ratings

only, and functional operation of the device at these or any other conditions beyond those indicated under recommended operating
conditions is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

ELECTRICAL CHARACTERISTICS

V

= 2.4 V to 2.6 V, TA= –40 ° C to 85 ° C (unless otherwise noted)

CC

PARAMETER TEST CONDITIONS MIN TYP MAX UNIT

V

Supply voltage 2.4 2.5 2.6 V

CC

I

Operating mode current µ A

CC

I

Low-power storage mode current µ A

(SLP)

Output voltage low SMBC, SMBD, SDATA, SCLK, SAFE IOL= 0.5 mA 0.4 V

V

OL

LED1 – LED5 IOL= 10 mA 0.4 V

V

Output high voltage, SMBC, SMBD, SDATA, SCLK, SAFE IOH= –1 mA VCC– 0.5 V

OH

V

Input voltage low SMBC, SMBD, SDATA, SCLK, XALERT, –0.3 0.8

IL

PRES, PFIN
DISP –0.3 0.8 V

V

Input voltage high SMBC, SMBD, SDATA, SCLK, XALERT, 2 6

IH

PRES, PFIN
DISP 2 V

C

Input capacitance 5 pF

IN

V

Input voltage range VCELL+, VCELL-,TS1, TS2 - 0.2 0.8XV

(AI1)

V

Input voltage range SR1, SR2 – 0.20 0.20

(AI2)

Z

Input impedance VCELL+, VCELL-, TS1, TS2 0 V–1 V 8 M Ω

(AI2)

Z

Input impedance SR1, SR2 0 V–1 V 2.5 M Ω

(AI1)

(1) This value does not include the bq29330

(1)

No flash programming 400
bq20z90 + bq29330 475
Sleep mode 8
bq20z90 + bq29330 51

RANGE

(1)

(1)

CC

+ 0.3 V

CC

+ 0.3 V

CC

V

V

V

4

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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V

oltage-V

POWERONRESETBEHAVIOR

FREE-AIRTEMPERATURE

VS

V

= 2.4V to 2.6 V, TA= –40 ° C to 85 ° C (unless otherwise noted)

CC

PARAMETER TEST CONDITIONS MIN TYP MAX UNIT

V
V

Negative-going voltage input 1.7 1.8 1.9 V

IT–

Power-on reset hysteresis 50 125 200 mV

HYS

bq20z90

SLUS662A – DECEMBER 2005 – REVISED JUNE 2006

INTEGRATING ADC (Coulomb Counter) CHARACTERISTICS

V

= 2.4V to 2.6 V, TA= –40 ° C to 85 ° C (unless otherwise noted)

CC

PARAMETER TEST CONDITIONS MIN TYP MAX UNIT

V

(SR)

V

(SROS)

Input voltage range, V
Input offset 10 µ V

INL Integral nonlinearity error 0.007% 0.034%

OSCILLATOR

V

= 2.4 V to 2.6 V, TA= –40 ° C to 85 ° C (unless otherwise noted)

CC

HIGH FREQUENCY OSCILLATOR

f

Operating Frequency 4.194 MHz

(OSC)

f

Frequency Error

(EIO)

t

Start-up Time

(SXO)

LOW FREQUENCY OSCILLATOR

f

(LOSC)

f

(LEIO)

(1) The frequency error is measured from 4.194 MHz.
(2) The frequency drift is included and measured from the trimmed frequency at V
(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.

PARAMETER TEST CONDITIONS MIN TYP MAX UNIT

(1) (2)

(3)

Operating Frequency 32.768 KHz

Frequency Error

(2) (4)

and V

(SRN)

(SRP)

V

= V(SRN) – V(SRP) –0.2 0.2 V

(SR)

-3% 0.25% 3%

TA= 20 ° C to 70 ° C -2% 0.25% 2%

2.5 5 ms

-2.5% 0.25% 2.5%

TA= 20 ° C to 70 ° C -1.5% 0.25% 1.5%

= 2.5 V, TA= 25 ° C.

CC

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bq20z90

SLUS662A – DECEMBER 2005 – REVISED JUNE 2006

OSCILLATOR (continued)

V

= 2.4 V to 2.6 V, TA= –40 ° C to 85 ° C (unless otherwise noted)

CC

PARAMETER TEST CONDITIONS MIN TYP MAX UNIT

t

Start-up time

(LSXO)

(5) The start-up time is defined as the time it takes for the oscillator output frequency to be ± 3%.

DATA FLASH MEMORY CHARACTERISTICS

V

= 2.4 V to 2.6 V, TA= –40 ° C to 85 ° C (unless otherwise noted)

CC

t

DR

t

(WORDPROG)

I

(DDdPROG)

(1) Assured by design. Not production tested

REGISTER BACKUP

V

= 2.4 V to 2.6 V, TA= –40 ° C to 85 ° C (unless otherwise noted)

CC

I

V

(1) Specified by design. Not production tested.

RB data-retention input current V

(RB)

RB data-retention voltage

(RB)

(5)

PARAMETER TEST CONDITIONS MIN TYP MAX UNIT

Data retention See
Flash programming write-cycles See
Word programming time See
Flash-write supply current See

PARAMETER TEST CONDITIONS MIN TYP MAX UNIT

(1)

(RB)

V

(RB)

to 50 ° C

(1)
(1)
(1)
(1)

> V
> V

, V

(RBMIN)
(RBMIN)

CC

, V

CC

20,000 Cycles

< V

IT-

< V

, TA= 0 ° C 40 160

IT-

500 µ s

10 Years

2 ms

5 10 mA

1500 nA

1.7 V

6

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SMBus TIMING SPECIFICATIONS

V

= 2.4 V to 2.6 V, TA= –40 ° C to 85 ° C (unless otherwise noted)

CC

PARAMETER TEST CONDITIONS MIN TYP MAX UNIT

f

SMB

f

MAS

t

BUF

t

HD:STA

t

SU:STA

t

SU:STO

t

HD:DAT

t

SU:DAT

t

TIMEOUT

t

LOW

t

HIGH

t

LOW:SEXT

t

LOW:MEXT

t

F

t

R

(1) The bq20z90 times out when any clock low exceeds t
(2) t
(3) t
(4) t

SMBus operating frequency Slave mode, SMBC 50% duty cycle 10 100
SMBus master clock frequency Master mode, no clock low slave extend 51.2
Bus free time between start and stop 4.7
Hold time after (repeated) start 4
Repeated start setup time 4.7
Stop setup time 4

Data hold time

Data setup time 250
Error signal/detect See
Clock low period 4.7
Clock high period See
Cumulative clock low slave extend time See
Cumulative clock low master extend time See
Clock/data fall time (V
Clock/data rise time 0.9 VCC to (VILMAX – 0.15 V) 1000

. is minimum bus idle time. SMBC = 1 for t > 50 µ s causes reset of any transaction involving the bq20z90 that is in progress.

HIGH:MAX
LOW:SEXT
LOW:MEXT

is the cumulative time a slave device is allowed to extend the clock cycles in one message from initial start to the stop.

is the cumulative time a master device is allowed to extend the clock cycles in one message from initial start to the stop.

SLUS662A – DECEMBER 2005 – REVISED JUNE 2006

Receive mode 0
Transmit mode 300 ns

(1)

(2)
(3)
(4)

– 0.15 V) to (V

ILMAX

.

TIMEOUT

+ 0.15 V) 300

IHMIN

25 35 ms

4 50

bq20z90

kHz

µ s

µ s

25

ms

10

ns

SMBus TIMING DIAGRAM

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bq20z90

SLUS662A – DECEMBER 2005 – REVISED JUNE 2006

FEATURE SET

Primary (1st Level) Safety Features

The bq20z90 supports a wide range of battery and system protection features that can easily be configured. The
primary 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

Secondary (2nd Level) Safety Features

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 or
discharging. 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

Charge Control Features

The bq20z90 charge control features include:

• Report the appropriate charging current needed for constant current charging and the appropriate charging
voltage 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 balancing
algorithm, gradually decrease the differences in the cells' state of charge in a fully charged state. This
prevents high cells from overcharging, causing excessive degradation and also increases the usable pack
energy 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.

Gas Gauging

The bq20z90 uses the Impedance Track™ Technology to measure and calculate the available charge in battery
cells. The achievable accuracy is better than 1% error over the lifetime of the battery and there is no full
charge-discharge learning cycle required.

8

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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.

LED Display

The bq20z90 can drive a 3-, 4-, or 5- segment LED display for remaining capacity indication. The LED drive
current can be adjusted to 3mA, 4mA and 5mA digitally.

LifeTime Data Logging Features

The bq20z90 offers a lifetime data logging array, where all important measurements are stored for warranty and
analysis 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

Authentication

The bq20z90 supports authentication by the host using SHA-1.

Power Modes

The bq20z90 supports 3 different power modes to reduce power consumption:

• In Normal Mode, the bq20z90 performs measurements, calculations, protection decisions, and data updates
in 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 updates
in adjustable time intervals. Between these intervals, the bq20z90 is in a reduced power stage.

• In Shutdown Mode the bq20z90 is completety disabled.

CONFIGURATION

Oscillator Function

The bq20z90 fully integrates the system and processor oscillators and, therefore, requires no pins or
components for this feature.

System Present Operation

The bq20z90 periodically verifies the PRES pin and detects that the battery is present in the system via a low
state on a PRES input. When this occurs, bq20z90 enters normal operating mode. When the pack is removed
from the system and the PRES input is high, the bq20z90 enters the battery-removed state, disabling the
charge, discharge and ZVCHG FETs. The PRES input is ignored and can be left floating when non-removal
mode is set in the data flash.

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bq20z90

SLUS662A – DECEMBER 2005 – REVISED JUNE 2006

FEATURE SET (continued)

BATTERY PARAMETER MEASUREMENTS

The bq20z90 uses an integrating delta-sigma analog-to-digital converter (ADC) for current measurement, and a
second delta-sigma ADC for individual cell and battery voltage, and temperature measurement.

Charge and Discharge Counting

The integrating delta-sigma ADC measures the charge/discharge flow of the battery by measuring the voltage
drop across a small-value sense resistor between the SRP and SRN pins. The integrating ADC measures
bipolar signals from -0.25 V to 0.25 V. The bq20z90 detects charge activity when V
and discharge activity when V

= V

SR

-V

(SRP)

is negative. The bq20z90 continuously integrates the signal over

(SRN)

time, using an internal counter. The fundamental rate of the counter is 0.65 nVh.

Voltage

The bq20z90 updates the individual series cell voltages through the bq29330 at one second intervals. The
bq20z90 configures the bq29330 to connect the selected cell, cell offset, or bq29330 VREF to the CELL pin of
the bq29330, which is required to be connected to VIN of the bq20z90. The internal ADC of the bq20z90
measures the voltage, scales it, and calibrates itself appropriately. This data is also used to calculate the
impedance of the cell for the Impedance Track™ gas-gauging.

Current

The bq20z90 uses the SRP and SRN inputs to measure and calculate the battery charge and discharge current
using a 5 m Ω to 20 m Ω typ. sense resistor.

= V

SR

-V

(SRP)

is positive

(SRN)

Wake Function

The bq20z90 can exit sleep mode, if enabled, by the presence of a programmable level of current signal across
SRP and SRN.

Auto Calibration

The bq20z90 provides an auto-calibration feature to cancel the voltage offset error across SRP and SRN for
maximum charge measurement accuracy. The bq20z90 performs auto-calibration when the SMBus lines stay
low continuously for a minimum of a programmable amount of time.

Temperature

The bq20z90 TS1 and TS2 inputs, in conjunction with two identical NTC thermistors (default are Semitec
103AT), measure the battery environmental temperature. The bq20z90 can also be configured to use its internal
temperature sensor.

COMMUNICATIONS

The bq20z90 uses SMBus v1.1 with Master Mode and package error checking (PEC) options per the SBS
specification.

SMBus On and Off State

The bq20z90 detects an SMBus off state when SMBC and SMBD are logic-low for ≥ 2 seconds. Clearing this
state 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 Unit

0x00 R/W ManufacturerAccess hex 2 0x0000 0xffff —
0x01 R/W RemainingCapacityAlarm unsigned int 2 0 65535 300 mAh or

0x02 R/W RemainingTimeAlarm unsigned int 2 0 65535 10 min

Bytes Value Value

10mWh

10

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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 Unit

Bytes Value Value

0x03 R/W BatteryMode hex 2 0x0000 0xe383 —
0x04 R/W AtRate signed int 2 -32768 32767 — mA or 10mW
0x05 R AtRateTimeToFull unsigned int 2 0 65534 — min
0x06 R AtRateTimeToEmpty unsigned int 2 0 65534 — min
0x07 R AtRateOK unsigned int 2 0 65535 —
0x08 R Temperature unsigned int 2 0 65535 — 0.1 ° K
0x09 R Voltage unsigned int 2 0 65535 — mV
0x0a R Current signed int 2 -32768 32767 — mA
0x0b R AverageCurrent signed int 2 -32768 32767 — mA
0x0c 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 or

10mWh

0x10 R FullChargeCapacity unsigned int 2 0 65535 — mAh or

10mWh
0x11 R RunTimeToEmpty unsigned int 2 0 65534 — min
0x12 R AverageTimeToEmpty unsigned int 2 0 65534 — min
0x13 R AverageTimeToFull unsigned int 2 0 65534 — min
0x14 R ChargingCurrent unsigned int 2 0 65534 — mA
0x15 R ChargingVoltage unsigned int 2 0 65534 — mV
0x16 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 or

10mWh
0x19 R/W DesignVoltage unsigned int 2 0 65535 14400 mV
0x1a R/W SpecificationInfo hex 2 0x0000 0xffff 0x0031
0x1b R/W ManufactureDate unsigned int 2 — — 01-Jan-1980 ASCII
0x1c R/W SerialNumber hex 2 0x0000 0xffff 0x0001
0x20 R/W ManufacturerName String 11+1 — — Texas Inst. ASCII
0x21 R/W DeviceName String 7+1 — — bq20z90 ASCII
0x22 R/W DeviceChemistry String 4+1 — — LION ASCII
0x23 R/W ManufacturerData String 14+1 — — — ASCII
0x2f R/W Authenticate String 20+1 — — — ASCII
0x3c R CellVoltage4 unsigned int 2 0 65535 — mV
0x3d R CellVoltage3 unsigned int 2 0 65535 — mV
0x3e R CellVoltage2 unsigned int 2 0 65535 — mV
0x3f R CellVoltage1 unsigned int 2 0 65535 — mV

bq20z90

Table 2. EXTENDED SBS COMMANDS

SBS Mode Name Format Size in Min Value Max Value Default Unit
Cmd Bytes Value

0x45 R AFEData String 11+1 — — — ASCII
0x46 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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Table 2. EXTENDED SBS COMMANDS (continued)

SBS Mode Name Format Size in Min Value Max Value Default Unit
Cmd 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 --- mV
0x5d R AverageVoltage unsigned int 2 0 65535 — mV
0x60 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 — — — ASCII
0x71 R/W SenseResistor unsigned int 2 0 65535 — µ Ω
0x77 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 VALUES

Class Subclass Subclass Offset Name Data Min Max Value Default Units

1st Level 0 Voltage 0 COV Threshold I2 3700 5000 4300 mV
Safety

1st Level 0 Voltage 2 COV Time U1 0 60 2 s
Safety

1st Level 0 Voltage 3 COV Recovery I2 0 4400 3900 mV
Safety

1st Level 0 Voltage 5 COV Delta U1 0 200 20 mV
Safety

1st Level 0 Voltage 6 COV Temp. Hys U1 0 250 100 0.1 ° C
Safety

1st Level 0 Voltage 7 POV Threshold I2 0 18000 17500 mV
Safety

1st Level 0 Voltage 9 POV Time U1 0 60 2 s
Safety

1st Level 0 Voltage 10 POV Recovery I2 0 17000 16000 mV
Safety

1st Level 0 Voltage 12 CUV Threshold I2 0 3500 2200 mV
Safety

12

ID Type Value Value

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Table 3. DATA FLASH VALUES (continued)

Class Subclass Subclass Offset Name Data Min Max Value Default Units

1st Level 0 Voltage 14 CUV Time U1 0 60 2 s
Safety

1st Level 0 Voltage 15 CUV Recovery I2 0 3600 3000 mV
Safety

1st Level 0 Voltage 17 PUV Threshold I2 0 16000 11000 mV
Safety

1st Level 0 Voltage 19 PUV Time U1 0 60 2 s
Safety

1st Level 0 Voltage 20 PUV Recovery I2 0 16000 12000 mV
Safety

1st Level 1 Current 0 OC (1st Tier) Chg I2 0 20000 6000 mA
Safety

1st Level 1 Current 2 OC (1st Tier) Chg Time U1 0 60 2 s
Safety

1st Level 1 Current 3 OC Chg Recovery I2 -1000 1000 200 mA
Safety

1st Level 1 Current 5 OC (1st Tier) Dsg I2 0 20000 6000 mA
Safety

1st Level 1 Current 7 OC (1st Tier) Dsg Time U1 0 60 2 s
Safety

1st Level 1 Current 8 OC Dsg Recovery I2 0 1000 200 mA
Safety

1st Level 1 Current 10 OC (2nd Tier) Chg I2 0 20000 8000 mA
Safety

1st Level 1 Current 12 OC (2nd Tier) Chg Time U1 0 60 2 s
Safety

1st Level 1 Current 13 OC (2nd Tier) Dsg I2 0 22000 8000 mA
Safety

1st Level 1 Current 15 OC (2nd Tier) Dsg Time U1 0 60 2 s
Safety

1st Level 1 Current 16 Current Recovery Time U1 0 60 8 s
Safety

1st Level 1 Current 17 AFE OC Dsg H1 0x00 0x1f 0x12
Safety

1st Level 1 Current 18 AFE OC Dsg Time H1 0x00 0x0f 0x0f
Safety

1st Level 1 Current 19 AFE OC Dsg Recovery I2 10 1000 5 mA
Safety

1st Level 1 Current 21 AFE SC Chg Cfg H1 0x00 0xff 0x77
Safety

1st Level 1 Current 22 AFE SC Dsg Cfg H1 0x00 0xff 0x77
Safety

1st Level 1 Current 23 AFE SC Recovery I2 0 200 1 mA
Safety

1st Level 2 Temperature 0 Over Temp Chg I2 0 1200 550 0.1 ° C
Safety

1st Level 2 Temperature 2 OT Chg Time U1 0 60 2 s
Safety

1st Level 2 Temperature 3 OT Chg Recovery I2 0 1200 500 0.1 ° C
Safety

1st Level 2 Temperature 5 Over Temp Dsg I2 0 1200 600 0.1 ° C
Safety

1st Level 2 Temperature 7 OT Dsg Time U1 0 60 2 s
Safety

1st Level 2 Temperature 8 OT Dsg Recovery I2 0 1200 550 0.1 ° C
Safety

1st Level 3 Host Comm 0 Host Watchdog Timeout U1 0 255 0 s
Safety

2nd Level 16 Voltage 0 SOV Threshold I2 0 20000 18000 mV
Safety

ID Type Value Value

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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 Units

2nd Level 16 Voltage 2 SOV Time U1 0 30 0 s
Safety

2nd Level 16 Voltage 3 Cell Imbalance Current I1 0 200 5 mA
Safety

2nd Level 16 Voltage 4 Cell Imbalance Fail Voltage I2 0 5000 1000 mV
Safety

2nd Level 16 Voltage 6 Cell Imbalance Time U1 0 30 0 s
Safety

2nd Level 16 Voltage 7 Battery Rest Time U2 0 65535 1800 s
Safety

2nd Level 16 Voltage 9 PFIN Detect Time U1 0 30 0 s
Safety

2nd Level 17 Current 0 SOC Chg I2 0 30000 10000 mA
Safety

2nd Level 17 Current 2 SOC Chg Time U1 0 30 0 s
Safety

2nd Level 17 Current 3 SOC Dsg I2 0 30000 10000 mA
Safety

2nd Level 17 Current 5 SOC Dsg Time U1 0 30 0 s
Safety

2nd Level 18 Temperature 0 SOT Chg I2 0 1200 650 0.1 ° C
Safety

2nd Level 18 Temperature 2 SOT Chg Time U1 0 30 0 s
Safety

2nd Level 18 Temperature 3 SOT Dsg I2 0 1200 750 0.1 ° C
Safety

2nd Level 18 Temperature 5 SOT Dsg Time U1 0 30 0 s
Safety

2nd Level 18 Temperature 6 Open Thermistor I2 -1000 1200 -333 0.1 ° C
Safety

2nd Level 18 Temperature 8 Open Time I1 0 30 0 s
Safety

2nd Level 19 FET Verification 0 FET Fail Limit I2 0 500 20 mA
Safety

2nd Level 19 FET Verification 2 FET Fail Time U1 0 30 0 s
Safety

2nd Level 20 AFE Verification 0 AFE Check Time U1 0 255 0 s
Safety

2nd Level 20 AFE Verification 1 AFE Fail Limit U1 0 255 10
Safety

2nd Level 20 AFE Verification 2 AFE Fail Recovery Time U1 0 255 20 s
Safety

2nd Level 20 AFE Verification 3 AFE Init Retry Limit U1 0 255 6
Safety

2nd Level 20 AFE Verification 4 AFE Init Limit U1 0 255 20
Safety

2nd Level 21 Fuse Verification 0 Fuse Fail Limit I2 0 20 2 mA
Safety

2nd Level 21 Fuse Verification 2 Fuse Fail Time U1 0 30 0 s
Safety

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

ID Type Value Value

14

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Table 3. DATA FLASH VALUES (continued)

Class Subclass Subclass Offset Name Data Min Max Value Default Units

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 mAh

Configuration
SBS 48 Data 2 Rem Energy Alarm I2 0 1000 432 10mW

Configuration
SBS 48 Data 4 Rem Time Alarm U2 0 30 10 min

Configuration
SBS 48 Data 6 Init Battery Mode H2 0x0000 0xffff 0x0081

Configuration
SBS 48 Data 8 Design Voltage I2 7000 18000 14400 mV

Configuration
SBS 48 Data 10 Spec Info H2 0x0000 0xffff 0x0031

Configuration
SBS 48 Data 12 Manuf Date U2 0 65535 0 Day +

Configuration Mo*32 +

SBS 48 Data 14 Ser. Num. H2 0x0000 0xffff 0x0001
Configuration

SBS 48 Data 16 Cycle Count U2 0 65535 0 Count
Configuration

SBS 48 Data 18 CC Threshold I2 100 32767 4400 mAh
Configuration

SBS 48 Data 20 CC % U1 0 100 90 %
Configuration

ID Type Value Value

(Yr

-

1980)*256

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Table 3. DATA FLASH VALUES (continued)

Class Subclass Subclass Offset Name Data Min Max Value Default Units

SBS 48 Data 21 CF MaxError Limit U1 0 100 100 %
Configuration

SBS 48 Data 22 Design Capacity I2 0 65535 4400 mAh
Configuration

SBS 48 Data 24 Design Energy I2 0 65535 6336 10mW
Configuration

SBS 48 Data 26 Manuf Name S12 - - Texas Inst. ASCII
Configuration

SBS 48 Data 38 Device Name S8 - - bq20z90 ASCII
Configuration

SBS 48 Data 46 Device Chemistry S5 - - LION ASCII
Configuration

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 mV
Configuration

SBS 49 Configuration 6 TDA Set Volt Time U1 0 60 5 s
Configuration

SBS 49 Configuration 7 TDA Clear Volt I2 0 16800 5500 mV
Configuration

SBS 49 Configuration 9 FD Set Volt Threshold I2 0 16800 5000 mV
Configuration

SBS 49 Configuration 11 FD Volt Time U1 0 60 5 s
Configuration

SBS 49 Configuration 12 FD Clear Volt I2 0 16800 5500 mV
Configuration

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 Count

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

ID Type Value Value

Samples

16

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Table 3. DATA FLASH VALUES (continued)

Class Subclass Subclass Offset Name Data Min Max Value Default Units

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 mA

Gas Gauging 81 Current 2 Chg Current Threshold I2 0 2000 50 mA

Gas Gauging 81 Current 4 Quit Current I2 0 1000 10 mA

Gas Gauging 81 Current 6 Dsg Relax Time U1 0 255 1 s

Gas Gauging 81 Current 7 Chg Relax Time U1 0 255 60 s

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

ID Type Value Value

Thresholds

Thresholds

Thresholds

Thresholds

Thresholds

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Table 3. DATA FLASH VALUES (continued)

Class Subclass Subclass Offset Name Data Min Max Value Default Units

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

ID Type Value Value

18

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Table 3. DATA FLASH VALUES (continued)

Class Subclass Subclass Offset Name Data Min Max Value Default Units

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

ID Type Value Value

Submit Documentation Feedback

19

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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 Units

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 0x0000

PF Status 96 Device Status 2 Fuse Flag H2 0x0000 0xffff 0x0000

PF Status 96 Device Status 4 PF Voltage I2 0 32767 0 mV

PF Status 96 Device Status 6 PF C4 Voltage I2 0 9999 0 mV

PF Status 96 Device Status 8 PF C3 Voltage I2 0 9999 0 mV

PF Status 96 Device Status 10 PF C2 Voltage I2 0 9999 0 mV

PF Status 96 Device Status 12 PF C1 Voltage I2 0 9999 0 mV

PF Status 96 Device Status 14 PF Current I2 -32768 32767 0 mA

PF Status 96 Device Status 16 PF Temperature I2 -9999 9999 0 0.1 K

PF Status 96 Device Status 18 PF Batt Stat H2 0x0000 0xffff 0x0000

PF Status 96 Device Status 20 PF RC-mAh I2 0 32767 0 mAh

ID Type Value Value

Data

Data

Data

Data

Data

Data

Data

Data

Data

Data

Data

20

Submit 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 Units

PF Status 96 Device Status 22 PF RC-10mWh I2 0 32767 0 cWattHr

PF Status 96 Device Status 24 PF Chg Status H2 0x0000 0xffff 0x0000

PF Status 96 Device Status 26 PF Safety Status H2 0x0000 0xffff 0x0000

PF Status 96 Device Status 28 PF Flags 2 H2 0x0000 0x8000 0x0000

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 µ V
Calibration 104 Data 12 AFE Pack Gain I2 0 32767 22050 µ V/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

ID Type Value Value

Data

Data

Data

Data

Submit Documentation Feedback

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PACKAGE OPTION ADDENDUM

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10-Jul-2006

PACKAGING INFORMATION

Orderable Device Status

(1)

Package

Type

Package
Drawing

Pins Package

Qty

Eco Plan

BQ20Z90DBT ACTIVE SM8 DBT 30 60 Green (RoHS &

no Sb/Br)

BQ20Z90DBTG4 ACTIVE SM8 DBT 30 60 Green (RoHS &

no Sb/Br)

BQ20Z90DBTR ACTIVE SM8 DBT 30 2000 Green (RoHS &

no Sb/Br)

BQ20Z90DBTRG4 ACTIVE SM8 DBT 30 2000 Green (RoHS &

no Sb/Br)

(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,andalifetime-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)

(2)

Lead/Ball Finish MSL Peak Temp

CU NIPDAU Level-2-260C-1 YEAR

CU NIPDAU Level-2-260C-1 YEAR

CU NIPDAU Level-2-260C-1 YEAR

CU NIPDAU Level-2-260C-1 YEAR

(3)

(3)

MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder

temperature.

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