SLUUCI8 November   2023 BQ76905

 

  1.   1
  2.   Read This First
    1.     About This Manual
    2.     Battery Notational Conventions
    3.     Trademarks
    4.     Glossary
  3. 1 Introduction
  4. 2 Device Description
    1. 2.1 Overview
    2. 2.2 Functional Block Diagram
  5. 3 Device Configuration
    1. 3.1 Direct Commands and Subcommands
    2. 3.2 Configuration Using OTP or Registers
    3. 3.3 Data Formats
      1. 3.3.1 Unsigned Integer
      2. 3.3.2 Integer
      3. 3.3.3 Hex
  6. 4 Device Security
  7. 5 Measurement Subsystem
    1. 5.1 Voltage Measurement
      1. 5.1.1 Voltage Measurement Schedule
      2. 5.1.2 Unused VC Cell Input Pins
      3. 5.1.3 General Purpose ADCIN Functionality
    2. 5.2 Coulomb Counter and Digital Filters
    3. 5.3 Internal Temperature Measurement
    4. 5.4 Thermistor Temperature Measurement
    5. 5.5 Measurement Calibration
  8. 6 Protection Subsystem
    1. 6.1  Protections Overview
    2. 6.2  Protection FET Drivers
    3. 6.3  Cell Overvoltage Protection
    4. 6.4  Cell Undervoltage Protection
    5. 6.5  Short Circuit in Discharge Protection
    6. 6.6  Overcurrent in Charge Protection
    7. 6.7  Overcurrent in Discharge 1 and 2 Protections
    8. 6.8  Current Protection Latch
    9. 6.9  CHG Detector
    10. 6.10 Overtemperature in Charge Protection
    11. 6.11 Overtemperature in Discharge Protection
    12. 6.12 Internal Overtemperature Protection
    13. 6.13 Undertemperature in Charge Protection
    14. 6.14 Undertemperature in Discharge Protection
    15. 6.15 Host Watchdog Protection
    16. 6.16 Cell Open Wire Detection
    17. 6.17 Voltage Reference Measurement Diagnostic Protection
    18. 6.18 VSS Measurement Diagnostic Protection
    19. 6.19 REGOUT Diagnostic Protection
    20. 6.20 LFO Oscillator Integrity Diagnostic Protection
    21. 6.21 Internal Factory Trim Diagnostic Protection
  9. 7 Device Status and Controls
    1. 7.1 0x00 Control Status() and 0x12 Battery Status() Commands
    2. 7.2 LDOs
    3. 7.3 ALERT Pin Operation
    4. 7.4 TS Pin Operation
    5. 7.5 Programmable Timer
    6. 7.6 Device Event Timing
  10. 8 Operational Modes
    1. 8.1 Overview of Operational Modes
    2. 8.2 NORMAL Mode
    3. 8.3 SLEEP Mode
    4. 8.4 DEEPSLEEP Mode
    5. 8.5 SHUTDOWN Mode
    6. 8.6 CONFIG_UPDATE Mode
  11. 9 I2C Serial Communications
    1. 9.1 I2C Serial Communications Interface
  12. 10Cell Balancing
    1. 10.1 Cell Balancing
  13. 11Commands and Subcommands
    1. 11.1 Direct Commands
    2. 11.2 Bit field Definitions for Direct Commands
      1. 11.2.1  Safety Alert A Register
      2. 11.2.2  Safety Status A Register
      3. 11.2.3  Safety Alert B Register
      4. 11.2.4  Safety Status B Register
      5. 11.2.5  Battery Status Register
      6. 11.2.6  Alarm Status Register
      7. 11.2.7  Alarm Raw Status Register
      8. 11.2.8  Alarm Enable Register
      9. 11.2.9  FET CONTROL Register
      10. 11.2.10 REGOUT CONTROL Register
      11. 11.2.11 DSG FET Driver PWM Control Register
      12. 11.2.12 CHG FET Driver PWM Control Register
    3. 11.3 Command-only Subcommands
    4. 11.4 Subcommands with Data
    5. 11.5 Bit field Definitions for Subcommands
      1. 11.5.1 DEVICE NUMBER Register
      2. 11.5.2 FW VERSION Register
      3. 11.5.3 HW VERSION Register
      4. 11.5.4 SECURITY KEYS Register
      5. 11.5.5 CB ACTIVE CELLS Register
      6. 11.5.6 PROG TIMER Register
      7. 11.5.7 PROT RECOVERY Register
  14. 12Data Memory
    1. 12.1 Calibration
      1. 12.1.1 Calibration:Voltage
        1. 12.1.1.1 Calibration:Voltage:Cell 1 Gain
        2. 12.1.1.2 Calibration:Voltage:Cell 2 Gain Delta
        3. 12.1.1.3 Calibration:Voltage:Cell 3 Gain Delta
        4. 12.1.1.4 Calibration:Voltage:Cell 4 Gain Delta
        5. 12.1.1.5 Calibration:Voltage:Cell 5 Gain Delta
        6. 12.1.1.6 Calibration:Voltage:Stack Gain
      2. 12.1.2 Calibration:Current
        1. 12.1.2.1 Calibration:Current:Curr Gain
        2. 12.1.2.2 Calibration:Current:Curr Offset
        3. 12.1.2.3 Calibration:Current:CC1 Gain
        4. 12.1.2.4 Calibration:Current:CC1 Offset
      3. 12.1.3 Calibration:Temperature
        1. 12.1.3.1 Calibration:Temperature:TS Offset
        2. 12.1.3.2 Calibration:Temperature:Int Temp Gain
        3. 12.1.3.3 Calibration:Temperature:Int Temp Offset
    2. 12.2 Settings
      1. 12.2.1 Settings:Configuration
        1. 12.2.1.1 Settings:Configuration:Power Config
        2. 12.2.1.2 Settings:Configuration:REGOUT Config
        3. 12.2.1.3 Settings:Configuration:I2C Address
        4. 12.2.1.4 Settings:Configuration:I2C Config
        5. 12.2.1.5 Settings:Configuration:DA Config
        6. 12.2.1.6 Settings:Configuration:Vcell Mode
        7. 12.2.1.7 Settings:Configuration:Default Alarm Mask
        8. 12.2.1.8 Settings:Configuration:FET Options
        9. 12.2.1.9 Settings:Configuration:Charge Detector Time
      2. 12.2.2 Settings:Cell Balancing
        1. 12.2.2.1 Settings:Cell Balancing:Balancing Configuration
        2. 12.2.2.2 Settings:Cell Balancing:Min Temp Threshold
        3. 12.2.2.3 Settings:Cell Balancing:Max Temp Threshold
        4. 12.2.2.4 Settings:Cell Balancing:Max Internal Temp
      3. 12.2.3 Settings:Protection
        1. 12.2.3.1 Settings:Protection:Enabled Protections A
        2. 12.2.3.2 Settings:Protection:Enabled Protections B
        3. 12.2.3.3 Settings:Protection:DSG FET Protections A
        4. 12.2.3.4 Settings:Protection:CHG FET Protections A
        5. 12.2.3.5 Settings:Protection:Both FET Protections B
        6. 12.2.3.6 Settings:Protection:Body Diode Threshold
        7. 12.2.3.7 Settings:Protection:Cell Open Wire NORMAL Check Time
        8. 12.2.3.8 Settings:Protection:Cell Open Wire SLEEP Check Time
        9. 12.2.3.9 Settings:Protection:Host Watchdog Timeout
    3. 12.3 Protections
      1. 12.3.1 Protections:Cell Voltage
        1. 12.3.1.1 Protections:Cell Voltage:Cell Undervoltage Protection Threshold
        2. 12.3.1.2 Protections:Cell Voltage:Cell Undervoltage Protection Delay
        3. 12.3.1.3 Protections:Cell Voltage:Cell Undervoltage Protection Recovery Hysteresis
        4. 12.3.1.4 Protections:Cell Voltage:Cell Overvoltage Protection Threshold
        5. 12.3.1.5 Protections:Cell Voltage:Cell Overvoltage Protection Delay
        6. 12.3.1.6 Protections:Cell Voltage:Cell Overvoltage Protection Recovery Hysteresis
      2. 12.3.2 Protections:Current
        1. 12.3.2.1  Protections:Current:Overcurrent in Charge Protection Threshold
        2. 12.3.2.2  Protections:Current:Overcurrent in Charge Protection Delay
        3. 12.3.2.3  Protections:Current:Overcurrent in Discharge 1 Protection Threshold
        4. 12.3.2.4  Protections:Current:Overcurrent in Discharge 1 Protection Delay
        5. 12.3.2.5  Protections:Current:Overcurrent in Discharge 2 Protection Threshold
        6. 12.3.2.6  Protections:Current:Overcurrent in Discharge 2 Protection Delay
        7. 12.3.2.7  Protections:Current:Short Circuit in Discharge Protection Threshold
        8. 12.3.2.8  Protections:Current:Short Circuit in Discharge Protection Delay
        9. 12.3.2.9  Protections:Current:Latch Limit
        10. 12.3.2.10 Protections:Current:Recovery Time
      3. 12.3.3 Protections:Temperature
        1. 12.3.3.1  Protections:Temperature:Overtemperature in Charge Protection Threshold
        2. 12.3.3.2  Protections:Temperature:Overtemperature in Charge Protection Delay
        3. 12.3.3.3  Protections:Temperature:Overtemperature in Charge Protection Recovery
        4. 12.3.3.4  Protections:Temperature:Undertemperature in Charge Protection Threshold
        5. 12.3.3.5  Protections:Temperature:Undertemperature in Charge Protection Delay
        6. 12.3.3.6  Protections:Temperature:Undertemperature in Charge Protection Recovery
        7. 12.3.3.7  Protections:Temperature:Overtemperature in Discharge Protection Threshold
        8. 12.3.3.8  Protections:Temperature:Overtemperature in Discharge Protection Delay
        9. 12.3.3.9  Protections:Temperature:Overtemperature in Discharge Protection Recovery
        10. 12.3.3.10 Protections:Temperature:Undertemperature in Discharge Protection Threshold
        11. 12.3.3.11 Protections:Temperature:Undertemperature in Discharge Protection Delay
        12. 12.3.3.12 Protections:Temperature:Undertemperature in Discharge Protection Recovery
        13. 12.3.3.13 Protections:Temperature:Internal Overtemperature Protection Threshold
        14. 12.3.3.14 Protections:Temperature:Internal Overtemperature Protection Delay
        15. 12.3.3.15 Protections:Temperature:Internal Overtemperature Protection Recovery
    4. 12.4 Power
      1. 12.4.1 Power:Sleep
        1. 12.4.1.1 Power:Sleep:Sleep Current
        2. 12.4.1.2 Power:Sleep:Voltage Time
        3. 12.4.1.3 Power:Sleep:Wake Comparator Current
      2. 12.4.2 Power:Shutdown
        1. 12.4.2.1 Power:Shutdown:Shutdown Cell Voltage
        2. 12.4.2.2 Power:Shutdown:Shutdown Stack Voltage
        3. 12.4.2.3 Power:Shutdown:Shutdown Temperature
        4. 12.4.2.4 Power:Shutdown:Auto Shutdown Time
    5. 12.5 Security
      1. 12.5.1 Security:Settings
        1. 12.5.1.1 Security:Settings:Security Settings
        2. 12.5.1.2 Security:Settings:Full Access Key Step 1
        3. 12.5.1.3 Security:Settings:Full Access Key Step 2
    6. 12.6 Data Memory Summary
  15. 13Revision History

12.6 Data Memory Summary

Data Memory Table

ClassSubclassAddressNameTypeMin ValueMax ValueDefaultUnits
CalibrationVoltage0x9000Cell 1 GainU20655350x0—
CalibrationVoltage0x9002Stack GainU20655350x0—
CalibrationVoltage0x9004Cell 2 Gain DeltaI1–1281270x0—
Calibration Voltage 0x9005 Cell 3 Gain Delta I1 –128 127 0x0 —
Calibration Voltage 0x9071 Cell 4 Gain Delta I1 –128 127 0x0 —
Calibration Voltage 0x9072 Cell 5 Gain Delta I1 –128 127 0x0 —
CalibrationCurrent0x9006Curr GainU20655350x0—
CalibrationCurrent0x9008Curr OffsetI2–32768327670x0—
CalibrationCurrent0x900ACC1 GainU20655350x0—
CalibrationCurrent0x900CCC1 OffsetI2–32768327670x0—
CalibrationTemperature0x900ETS OffsetI2–32768327670x0—
CalibrationTemperature0x9010Int Temp GainU20655350x0—
CalibrationTemperature0x9012Int Temp OffsetI2–32768327670x0—
SettingsConfiguration0x9014Power ConfigH10x000xFF0x01Hex
SettingsConfiguration0x9015REGOUT ConfigH10x000xFF0x08Hex
SettingsConfiguration0x9016I2C AddressH10x000x7F0x08Hex
SettingsConfiguration0x9017I2C ConfigH20x00000xFFFF0x3400Hex
SettingsConfiguration0x9019DA ConfigH20x00000xFFFF0x0000Hex
SettingsConfiguration0x901BVcell ModeH10x000x050x0Hex
SettingsConfiguration0x901CDefault Alarm MaskH20x00000xFFFF0xC200Hex
SettingsConfiguration0x901EFET OptionsH10x000xFF0x18Hex
SettingsConfiguration0x901FCharge Detector TimeU102551100ms
SettingsCell Balancing0x9020Balancing ConfigurationH10x000xFF0x02Hex
SettingsCell Balancing0x9021Min Temp ThresholdU10255255256-LSBs
SettingsCell Balancing0x9022Max Temp ThresholdU102550256 LSBs
SettingsCell Balancing0x9023Max Internal TempI1–12812785°C
SettingsProtection0x9024Enabled Protections AH10x000xFF0xA1Hex
SettingsProtection0x9025Enabled Protections BH10x000xFF0x00Hex
SettingsProtection0x9026DSG FET Protections AH10x000xFF0xFFHex
SettingsProtection0x9027CHG FET Protections AH10x000xFF0xEFHex
SettingsProtection0x9028Both FET Protections BH10x000xFF0x06Hex
SettingsProtection0x9029Body Diode ThresholdI203276764userA
SettingsProtection0x902BCell Open Wire NORMAL Check TimeU102550x0FULLSCAN intervals
SettingsProtection0x902CCell Open Wire SLEEP Check TimeH10x000xFF0x10Hex
SettingsProtection0x902DHost Watchdog TimeoutU102550x0Varying
ProtectionsCell Voltage0x902ECell Undervoltage Protection ThresholdI2055002500mV
ProtectionsCell Voltage0x9030Cell Undervoltage Protection DelayU1025510ADSCAN intervals
ProtectionsCell Voltage0x9031Cell Undervoltage Protection Recovery HysteresisH10x000x030x02Hex
ProtectionsCell Voltage0x9032Cell Overvoltage Protection ThresholdI2055004200mV
ProtectionsCell Voltage0x9034Cell Overvoltage Protection DelayU1025510ADSCAN intervals
ProtectionsCell Voltage0x9035Cell Overvoltage Protection Recovery HysteresisH10x000x030x02Hex
ProtectionsCurrent0x9036Overcurrent in Charge Protection ThresholdU126222mV
ProtectionsCurrent0x9037Overcurrent in Charge Protection DelayU1025558Varying
ProtectionsCurrent0x9038Overcurrent in Discharge 1 Protection ThresholdU1210042mV
ProtectionsCurrent0x9039Overcurrent in Discharge 1 Protection DelayU102556—
ProtectionsCurrent0x903AOvercurrent in Discharge 2 Protection ThresholdU1210032mV
ProtectionsCurrent0x903BOvercurrent in Discharge 2 Protection DelayU1025519—
ProtectionsCurrent0x903CShort Circuit in Discharge Protection ThresholdH10x000xFF0x0Varying
ProtectionsCurrent0x903DShort Circuit in Discharge Protection DelayH10x000x0A0x01Varying
ProtectionsCurrent0x903ELatch LimitH10x000x070x0Varying
ProtectionsCurrent0x903FRecovery TimeU102555Seconds
ProtectionsTemperature0x9040Overtemperature in Charge Protection ThresholdU102555554-LSBs
ProtectionsTemperature0x9041Overtemperature in Charge Protection DelayU1025515Measurements
ProtectionsTemperature0x9042Overtemperature in Charge Protection RecoveryU102556354-LSBs
ProtectionsTemperature0x9043Undertemperature in Charge Protection ThresholdU1025514777-LSBs
ProtectionsTemperature0x9044Undertemperature in Charge Protection DelayU1025515Measurements
ProtectionsTemperature0x9045Undertemperature in Charge Protection RecoveryU1025513477-LSBs
ProtectionsTemperature0x9046Overtemperature in Discharge Protection ThresholdU102554854-LSBs
ProtectionsTemperature0x9047Overtemperature in Discharge Protection DelayU1025515Measurements
ProtectionsTemperature0x9048Overtemperature in Discharge Protection RecoveryU102555554-LSBs
ProtectionsTemperature0x9049Undertemperature in Discharge Protection ThresholdU1025514777-LSBs
ProtectionsTemperature0x904AUndertemperature in Discharge Protection DelayU1025515Measurements
ProtectionsTemperature0x904BUndertemperature in Discharge Protection RecoveryU1025513477-LSBs
ProtectionsTemperature0x904CInternal Overtemperature Protection ThresholdU125150105°C
ProtectionsTemperature0x904DInternal Overtemperature Protection DelayU1025515Measurements
ProtectionsTemperature0x904EInternal Overtemperature Protection RecoveryU125150100°C
PowerSleep0x904FSleep CurrentI203276764userA
PowerSleep0x9051Voltage TimeU102555Seconds
PowerSleep0x9052Wake Comparator CurrentU11101500uV
PowerShutdown0x9053Shutdown Cell VoltageI2055000x0mV
PowerShutdown0x9055Shutdown Stack VoltageU20655350x0mV
PowerShutdown0x9057Shutdown TemperatureU101500x0°C
PowerShutdown0x9058Auto Shutdown TimeU102550x0Minutes
SecuritySettings0x9059Security SettingsH10x000x070x0Hex
SecuritySettings0x905AFull Access Key Step 1H20x00000xFFFF0x0414Hex
SecuritySettings0x905CFull Access Key Step 2H20x00000xFFFF0x3672Hex