SLUUC54C February   2020  – March 2024 BQ27Z558 , BQ27Z561 , BQ27Z561-R2

1.   1
2. 1 Preface
   1. 1.1 Read this First
   2. 1.2 Notational Conventions
   3. 1.3 Trademarks
3.   Introduction
4. 2 Basic Measurement System
   1. 2.1 Introduction
   2. 2.2 Current and Coulomb Counting
   3. 2.3 Voltage
   4. 2.4 Temperature
      1. 2.4.1 Internal Temperature
      2. 2.4.2 Cell Temperature
      3. 2.4.3 Temperature Configuration
5. 3 Power Modes
   1. 3.1 Introduction
   2. 3.2 NORMAL Mode
   3. 3.3 SLEEP Mode
      1. 3.3.1 Device Sleep
   4. 3.4 DEEP SLEEP Mode
   5. 3.5 HIBERNATE Mode
   6. 3.6 Power Modes Configuration
6. 4 Gauging
   1. 4.1  Impedance Track (IT) Model
   2. 4.2  Thermal Model
   3. 4.3  Gauging Capacities
   4. 4.4  Learning Cycles
   5. 4.5  Impedance Track Configuration
   6. 4.6  Gas Gauge Modes
   7. 4.7  QMax and Ra
      1. 4.7.1 QMax Initial Values
      2. 4.7.2 QMax Update Conditions
         1. 4.7.2.1 Base Required Conditions
         2. 4.7.2.2 Tracking QMax Updates
         3. 4.7.2.3 Relaxed Cell OCV
         4. 4.7.2.4 OCV Prediction
         5. 4.7.2.5 Cycle Count Based QMax Degradation
         6. 4.7.2.6 38
         7. 4.7.2.7 Fast QMax Update Conditions
         8. 4.7.2.8 QMax and Fast QMax Update Boundary Check
      3. 4.7.3 Ra Table Initial Values
         1. 4.7.3.1 R_a0 Table
         2. 4.7.3.2 R_a0x Table
      4. 4.7.4 Ra Table Update Conditions
      5. 4.7.5 Fast Resistance Scaling
         1. 4.7.5.1 Calculation of Resistance Scale
         2. 4.7.5.2 Negative Resistance Scale
         3. 4.7.5.3 Reset of Resistance Scale
         4. 4.7.5.4 Application of Resistance Scale
         5. 4.7.5.5 Fast Resistance Scaling Configuration
   8. 4.8  FullChargeCapacity (FCC), RemainingCapacity (RemCap), and RelativeStateOfCharge (RSOC)
      1. 4.8.1 Smoothing Engine
         1. 4.8.1.1 Smoothing to 0% in DISCHARGE Mode
         2. 4.8.1.2 Smoothing to 100% in CHARGE Mode
         3. 4.8.1.3 Smoothing in RELAX Mode
   9. 4.9  Impedance Track (IT) Configuration Options
   10. 4.10 State-Of-Health (SOH)
   11. 4.11 TURBO Mode 3.0
   12. 4.12 Battery Trip Point (BTP)
7. 5 Lifetime Data Collection
   1. 5.1 Description
   2. 5.2 Reset
8. 6 Host Interrupts
   1. 6.1 Description
   2. 6.2 Voltage and Temperature Interrupts
   3. 6.3 RSOC Interrupts
   4. 6.4 Host Interrupts Configuration
9. 7 Programmable Pulse Width
   1. 7.1 Description
   2. 7.2 Programmable Pulse Width Configuration
10. 8 Device Security
    1. 8.1 Description
    2. 8.2 SHA-256 Authentication
       1. 8.2.1 Secure Key
       2. 8.2.2 Authentication Flow
    3. 8.3 Security Modes
       1. 8.3.1 SEALING and UNSEALING Data Flash
       2. 8.3.2 SEALED to UNSEALED
       3. 8.3.3 UNSEALED to FULL ACCESS
11. 9 Advanced Charge Algorithm
    1. 9.1  Introduction
    2. 9.2  Charge Temperature Ranges
    3. 9.3  Voltage Range
       1. 9.3.1 RelativeStateofCharge() Range
    4. 9.4  Charging Current
    5. 9.5  Charging Voltage
       1. 9.5.1 Charge Voltage Compensation for System Impedance
    6. 9.6  Charging Degradation Modes
    7. 9.7  Cell Swelling Control (via Charging Voltage Degradation)
    8. 9.8  Valid Charge Termination
    9. 9.9  Charge and Discharge Alarms
    10. 9.10 Terminate Charge and Discharge Alarms
    11. 9.11 Precharge
    12. 9.12 Maintenance Charge
    13. 9.13 Charge Inhibit
12. 10Communications
    1. 10.1 HDQ Single-Pin Serial Interface
    2. 10.2 I2C Interface
       1. 10.2.1 I2C Clock Frequency
       2. 10.2.2 I2C Time Out
       3. 10.2.3 I2C Command Waiting Time
       4. 10.2.4 I2C Clock Stretching
13. 11Manufacture Production
    1. 11.1 Manufacture Testing
       1. 11.1.1 Manufacturing Status Configuration
    2. 11.2 I2C Configuration
    3. 11.3 Manufacturer Information Blocks
    4. 11.4 Verification of Data Flash
    5. 11.5 Calibration
14.   Calibration
    1. 12.1 Cell (BAT) Voltage Calibration
       1. 12.1.1 Voltage Calibration Data Flash
    2. 12.2 Current Calibration
       1. 12.2.1 CC Gain/Capacity Gain Calibration
       2. 12.2.2 Deadbands
          1. 12.2.2.1 Current Deadband
          2. 12.2.2.2 Coulomb Counter Deadband
       3. 12.2.3 Current Calibration Data Flash
    3. 12.3 Temperature Calibration
       1. 12.3.1 Internal Temperature Sensor Calibration
       2. 12.3.2 TS Calibration
       3. 12.3.3 Temperature Calibration Data Flash
       4. 12.3.4 Cell Temp Model
       5. 12.3.5 Internal Temp Model
15. 12Data Commands
    1. 12.1 Standard Data Commands
       1. 12.1.1  0x00/01 ManufacturerAccess()/ControlStatus()
       2. 12.1.2  0x02/03 AtRate()
       3. 12.1.3  0x04/05 AtRateTimeToEmpty()
       4. 12.1.4  0x06/07 Temperature()
       5. 12.1.5  0x08/09 Voltage()
       6. 12.1.6  0x0A/0B BatteryStatus()
       7. 12.1.7  0x0C/0D Current()
       8. 12.1.8  0x10/11 RemainingCapacity()
       9. 12.1.9  0x12/13 FullChargeCapacity()
       10. 12.1.10 0x14/15 AverageCurrent()
       11. 12.1.11 0x16/17 AverageTimeToEmpty()
       12. 12.1.12 0x18/19 AverageTimeToFull()
       13. 12.1.13 0x1E/1F MaxLoadCurrent()
       14. 12.1.14 0x20/21 MaxLoadTimeToEmpty()
       15. 12.1.15 0x22/23 AveragePower()
       16. 12.1.16 0x28/29 InternalTemperature()
       17. 12.1.17 0x2A/2B CycleCount()
       18. 12.1.18 0x2C/2D RelativeStateOfCharge()—RSOC
       19. 12.1.19 0x2E/2F StateOfHealth()
       20. 12.1.20 0x30/31 ChargingVoltage()
       21. 12.1.21 0x32/33 ChargingCurrent()
       22. 12.1.22 0x34/35 TerminateVoltage()
       23. 12.1.23 0x36/0x37/0x38/0x39 Timestamp()
       24. 12.1.24 QMax Cycles() 0x3A/3B
       25. 12.1.25 0x3C/3D DesignCapacity()
       26. 12.1.26 0x3E/3F AltManufacturerAccess()
       27. 12.1.27 0x40/0x5F MACData()
       28. 12.1.28 0x60 MACDataChecksum()
       29. 12.1.29 0x61 MACDataLength()
       30. 12.1.30 0x62/63 VoltHiSetThreshold
       31. 12.1.31 0x64/65 VoltHiClearThreshold
       32. 12.1.32 0x66/67 VoltLoSetThreshold
       33. 12.1.33 0x68/69 VoltLoClearThreshold
       34. 12.1.34 0x6A TempHiSetThreshold
       35. 12.1.35 0x6B TempHiClearThreshold
       36. 12.1.36 0X6C TempLoSetThreshold
       37. 12.1.37 0x6D TempLoClearThreshold
       38. 12.1.38 0x6E InterruptStatus()
       39. 12.1.39 0x6F SOCSetDeltaThreshold
    2. 12.2 0x70, 0x71 SusTurboPwr()
    3. 12.3 0x72, 0x73 MaxTurboPwr()
    4. 12.4 0x74, 0x75 SusTurboCurr()
    5. 12.5 0x76, 0x77 MaxTurboCurr()
    6. 12.6 0x78, 0x79 TurboSysR()
    7. 12.7 0x7A, 0x7B TurboEdv()
    8. 12.8 0x00, 0x01 ManufacturerAccess() and 0x3E, 0x3F AltManufacturerAccess()
       1. 12.8.1  AltManufacturerAccess() 0x0001 Device Type
       2. 12.8.2  AltManufacturerAccess() 0x0002 Firmware Version
       3. 12.8.3  AltManufacturerAccess() 0x0003 Hardware Version
       4. 12.8.4  AltManufacturerAccess() 0x0004 Instruction Flash Signature
       5. 12.8.5  AltManufacturerAccess() 0x0005 Static DF Signature
       6. 12.8.6  AltManufacturerAccess() 0x0006 Chemical ID
       7. 12.8.7  AltManufacturerAccess() 0x0007 Pre_MACWrite
       8. 12.8.8  AltManufacturerAccess() 0x0008 Static Chem DF Signature
       9. 12.8.9  AltManufacturerAccess() 0x0009 All DF Signature
       10. 12.8.10 AltManufacturerAccess() 0x0012 Device Reset
       11. 12.8.11 AltManufacturerAccess() 0x0017 QMax Day
       12. 12.8.12 AltManufacturerAccess() 0x0021 Gauging
       13. 12.8.13 AltManufacturerAccess() 0x0023 Lifetime Data Collection
       14. 12.8.14 AltManufacturerAccess() 0x0028 Lifetime Data Reset
       15. 12.8.15 AltManufacturerAccess() 0x002D CALIBRATION Mode
       16. 12.8.16 ManufacturerAccess() 0x002E Lifetime Data Flush
       17. 12.8.17 ManufacturerAccess() 0x002F Lifetime Data SPEED UP Mode
       18. 12.8.18 AltManufacturerAccess() 0x0030 Seal Device
       19. 12.8.19 AltManufacturerAccess() 0x0035 Security Keys
       20. 12.8.20 AltManufacturerAccess() 0x0037 Authentication Key
       21. 12.8.21 AltManufacturerAccess() 0x0041 Device Reset
       22. 12.8.22 AltManufacturerAccess() 0x0044 Set Deep Sleep
       23. 12.8.23 AltManufacturerAccess() 0x0045 Clear Deep Sleep
       24. 12.8.24 AltManufacturerAccess() 0x0046 Pulse GPIO
       25. 12.8.25 AltManufacturerAccess() 0x0047 Tambient Sync
       26. 12.8.26 AltManufacturerAccess() 0x0047 Clear GPIO
       27. 12.8.27 AltManufacturerAccess() 0x0047 Set GPIO
       28. 12.8.28 AltManufacturerAccess() 0x004A Device Name
       29. 12.8.29 AltManufacturerAccess() 0x004B Device Chem
       30. 12.8.30 AltManufacturerAccess() 0x004C Manufacturer Name
       31. 12.8.31 AltManufacturerAccess() 0x004D Manufacture Date
       32. 12.8.32 AltManufacturerAccess() 0x004E Serial Number
       33. 12.8.33 AltManufacturerAccess() 0x0054 OperationStatus
           1. 12.8.33.1 Operation Status A
           2. 12.8.33.2 Operation Status B
       34. 12.8.34 AltManufacturerAccess() 0x0055 ChargingStatus
           1. 12.8.34.1 Temp Range
           2. 12.8.34.2 Charging Status
       35. 12.8.35 AltManufacturerAccess() 0x0056 GaugingStatus
       36. 12.8.36 AltManufacturerAccess() 0x0057 ManufacturingStatus
       37. 12.8.37 AltManufacturerAccess() 0x0060 Lifetime Data Block 1
       38. 12.8.38 AltManufacturerAccess() 0x0062 Lifetime Data Block 3
       39. 12.8.39 ManufacturerAccess() 0x0063 Lifetime Data Block 4
       40. 12.8.40 ManufacturerAccess() 0x0065-0x006B Lifetime SOC Range Table Data Blocks
       41. 12.8.41 AltManufacturerAccess() 0x0070 ManufacturerInfo
       42. 12.8.42 AltManufacturerAccess() 0x0071 DAStatus1
       43. 12.8.43 AltManufacturerAccess() 0x0072 DAStatus2
       44. 12.8.44 AltManufacturerAccess() 0x0073 ITStatus1
       45. 12.8.45 AltManufacturerAccess() 0x0074 ITStatus2
       46. 12.8.46 AltManufacturerAccess() 0x0075 ITStatus3
       47. 12.8.47 AltManufacturerAccess() 0x0077 FCC_SOH
       48. 12.8.48 AltManufacturerAccess() 0x0078 Filtered Capacity
       49. 12.8.49 AltManufacturerAccess() 0x007A ManufacturerInfoB
       50. 12.8.50 AltManufacturerAccess() 0x007B ManufacturerInfoC
       51. 12.8.51 ManufacturerAccess() 0x00B0 ChargingVoltageOverride
       52. 12.8.52 AltManufacturerAccess() 0x0F00 ROM Mode
       53. 12.8.53 Data Flash Access() 0x4000–0x5FFF
       54. 12.8.54 AltManufacturerAccess() 0x7C40 Switch to HDQ
       55. 12.8.55 AltManufacturerAccess() 0xF080 Exit Calibration Output Mode
       56. 12.8.56 AltManufacturerAccess() 0xF081 Output CC and ADC for Calibration
16. 13Data Flash Access and Format
    1. 13.1 Data Flash Access
       1. 13.1.1 Minimum Voltage
    2. 13.2 Data Formats
       1. 13.2.1 Unsigned Integer
       2. 13.2.2 Integer
       3. 13.2.3 Floating Point
       4. 13.2.4 Hex
       5. 13.2.5 String
17. 14Data Flash Summary
    1. 14.1 Data Flash Table
18. 15Revision History