SLUUCY8 December   2023 BQ77307

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 Protection Subsystem
   1. 5.1  Protections Overview
   2. 5.2  Protection Evaluation and Detection
   3. 5.3  Protection FET Drivers
   4. 5.4  Cell Overvoltage Protection
   5. 5.5  Cell Undervoltage Protection
   6. 5.6  Short Circuit in Discharge Protection
   7. 5.7  Overcurrent in Charge Protection
   8. 5.8  Overcurrent in Discharge 1 and 2 Protections
   9. 5.9  Current Protection Latch
   10. 5.10 CHG Detector
   11. 5.11 Overtemperature in Charge Protection
   12. 5.12 Overtemperature in Discharge Protection
   13. 5.13 Internal Overtemperature Protection
   14. 5.14 Undertemperature in Charge Protection
   15. 5.15 Undertemperature in Discharge Protection
   16. 5.16 Cell Open Wire Detection
   17. 5.17 Voltage Reference Diagnostic Protection
   18. 5.18 VSS Diagnostic Protection
   19. 5.19 REGOUT Diagnostic Protection
   20. 5.20 LFO Oscillator Integrity Diagnostic Protection
   21. 5.21 Internal Factory Trim Diagnostic Protection
8. 6 Device Status and Controls
   1. 6.1 0x00 Control Status() and 0x12 Battery Status() Commands
   2. 6.2 Unused VC Cell Input Pins
   3. 6.3 LDOs
   4. 6.4 ALERT Pin Operation
   5. 6.5 TS Pin Operation
   6. 6.6 Device Event Timing
9. 7 Operational Modes
   1. 7.1 Overview of Operational Modes
   2. 7.2 NORMAL Mode
   3. 7.3 SHUTDOWN Mode
   4. 7.4 CONFIG_UPDATE Mode
10. 8 I2C Serial Communications
    1. 8.1 I2C Serial Communications Interface
11. 9 Commands and Subcommands
    1. 9.1 Direct Commands
    2. 9.2 Bit Field Definitions for Direct Commands
       1. 9.2.1  Safety Alert A Register
       2. 9.2.2  Safety Status A Register
       3. 9.2.3  Safety Alert B Register
       4. 9.2.4  Safety Status B Register
       5. 9.2.5  Battery Status Register
       6. 9.2.6  Alarm Status Register
       7. 9.2.7  Alarm Raw Status Register
       8. 9.2.8  Alarm Enable Register
       9. 9.2.9  FET CONTROL Register
       10. 9.2.10 REGOUT CONTROL Register
    3. 9.3 Command-only Subcommands
    4. 9.4 Subcommands with Data
    5. 9.5 Bitfield Definitions for Subcommands
       1. 9.5.1 DEVICE NUMBER Register
       2. 9.5.2 FW VERSION Register
       3. 9.5.3 HW VERSION Register
       4. 9.5.4 SECURITY KEYS Register
       5. 9.5.5 PROT RECOVERY Register
12. 10Data Memory
    1. 10.1 Settings
       1. 10.1.1 Settings:Configuration
          1. 10.1.1.1  Settings:Configuration:Reserved
          2. 10.1.1.2  Settings:Configuration:Power Config
          3. 10.1.1.3  Settings:Configuration:REGOUT Config
          4. 10.1.1.4  Settings:Configuration:I2C Address
          5. 10.1.1.5  Settings:Configuration:I2C Config
          6. 10.1.1.6  Settings:Configuration:TS Mode
          7. 10.1.1.7  Settings:Configuration:Vcell Mode
          8. 10.1.1.8  Settings:Configuration:Default Alarm Mask
          9. 10.1.1.9  Settings:Configuration:FET Options
          10. 10.1.1.10 Settings:Configuration:Charge Detector Time
       2. 10.1.2 Settings:Protection
          1. 10.1.2.1 Settings:Protection:Enabled Protections A
          2. 10.1.2.2 Settings:Protection:Enabled Protections B
          3. 10.1.2.3 Settings:Protection:DSG FET Protections A
          4. 10.1.2.4 Settings:Protection:CHG FET Protections A
          5. 10.1.2.5 Settings:Protection:Both FET Protections B
          6. 10.1.2.6 Settings:Protection:Cell Open Wire Check Time
    2. 10.2 Protections
       1. 10.2.1 Protections:Cell Voltage
          1. 10.2.1.1 Protections:Cell Voltage:Cell Undervoltage Protection Threshold
          2. 10.2.1.2 Protections:Cell Voltage:Cell Undervoltage Protection Delay
          3. 10.2.1.3 Protections:Cell Voltage:Cell Undervoltage Protection Recovery Hysteresis
          4. 10.2.1.4 Protections:Cell Voltage:Cell Overvoltage Protection Threshold
          5. 10.2.1.5 Protections:Cell Voltage:Cell Overvoltage Protection Delay
          6. 10.2.1.6 Protections:Cell Voltage:Cell Overvoltage Protection Recovery Hysteresis
       2. 10.2.2 Protections:Current
          1. 10.2.2.1  Protections:Current:Overcurrent in Charge Protection Threshold
          2. 10.2.2.2  Protections:Current:Overcurrent in Charge Protection Delay
          3. 10.2.2.3  Protections:Current:Overcurrent in Discharge 1 Protection Threshold
          4. 10.2.2.4  Protections:Current:Overcurrent in Discharge 1 Protection Delay
          5. 10.2.2.5  Protections:Current:Overcurrent in Discharge 2 Protection Threshold
          6. 10.2.2.6  Protections:Current:Overcurrent in Discharge 2 Protection Delay
          7. 10.2.2.7  Protections:Current:Short Circuit in Discharge Protection Threshold
          8. 10.2.2.8  Protections:Current:Short Circuit in Discharge Protection Delay
          9. 10.2.2.9  Protections:Current:Latch Limit
          10. 10.2.2.10 Protections:Current:Recovery Time
       3. 10.2.3 Protections:Temperature
          1. 10.2.3.1  Protections:Temperature:Overtemperature in Charge Protection Threshold
          2. 10.2.3.2  Protections:Temperature:Overtemperature in Charge Protection Delay
          3. 10.2.3.3  Protections:Temperature:Overtemperature in Charge Protection Recovery
          4. 10.2.3.4  Protections:Temperature:Undertemperature in Charge Protection Threshold
          5. 10.2.3.5  Protections:Temperature:Undertemperature in Charge Protection Delay
          6. 10.2.3.6  Protections:Temperature:Undertemperature in Charge Protection Recovery
          7. 10.2.3.7  Protections:Temperature:Overtemperature in Discharge Protection Threshold
          8. 10.2.3.8  Protections:Temperature:Overtemperature in Discharge Protection Delay
          9. 10.2.3.9  Protections:Temperature:Overtemperature in Discharge Protection Recovery
          10. 10.2.3.10 Protections:Temperature:Undertemperature in Discharge Protection Threshold
          11. 10.2.3.11 Protections:Temperature:Undertemperature in Discharge Protection Delay
          12. 10.2.3.12 Protections:Temperature:Undertemperature in Discharge Protection Recovery
          13. 10.2.3.13 Protections:Temperature:Internal Overtemperature Protection Threshold
          14. 10.2.3.14 Protections:Temperature:Internal Overtemperature Protection Delay
          15. 10.2.3.15 Protections:Temperature:Internal Overtemperature Protection Recovery
    3. 10.3 Power
       1. 10.3.1 Power:Configuration
          1. 10.3.1.1 Power:Configuration:Voltage CHECK Time
          2. 10.3.1.2 Power:Configuration:Body Diode Threshold
       2. 10.3.2 Power:Shutdown
          1. 10.3.2.1 Power:Shutdown:Shutdown Cell Voltage
          2. 10.3.2.2 Power:Shutdown:Shutdown Stack Voltage
          3. 10.3.2.3 Power:Shutdown:Shutdown Temperature
    4. 10.4 Security
       1. 10.4.1 Security:Settings
          1. 10.4.1.1 Security:Settings:Security Settings
          2. 10.4.1.2 Security:Settings:Full Access Key Step 1
          3. 10.4.1.3 Security:Settings:Full Access Key Step 2
       2. 10.4.2 Data Memory Summary
13. 11Revision History