Texas Instruments Single Cell Battery Fuel Gauge Evaluation Module BQ27210EVM User Manuals

Table of Contents

• FEATURES

  1
• APPLICATIONS

  1
• DESCRIPTION

  1
• TYPICAL APPLICATION

  2
• ABSOLUTE MAXIMUM RATINGS

  2
• RECOMMENDED OPERATING CONDITIONS

  3
• ELECTRICAL CHARACTERISTICS

  3
• TIMING DIAGRAMS

  5
• DEVICE INFORMATION

  6
• FUNCTIONAL BLOCK DIAGRAMS

  7
• FUNCTIONAL DESCRIPTION

  7
  • Measurements

    8
  • Charge and Discharge Coulometric and Current Measurements

    8
  • Offset Calibration

    9
  • Digital Magnitude Filter

    9
  • Voltage

    9
  • Temperature

    9
  • RBI Input

    9
  • Register Initialization and Data Integrity Checks

    10
  • GPIO

    10
  • Layout Considerations

    10
    • Gas Gauge Operation

      10
  • Register Interface

    12
• APPLICATION INFORMATION

  13
  • Control and MODE Registers (CTRL/MODE) — Address 0x00/0x01

    13
    • Mode Register (MODE) — Address 0x01

      13
  • At-Rate Registers (ARL/ARH) — Address 0x02/0x03

    14
  • At Rate Time-to-Empty Registers (ARTTEL/ARTTEH) — Address 0x04/0x05

    14
  • Reported Temperature Registers (TEMPL/TEMPH) — Address 0x06/0x07

    14
  • Reported Battery Voltage Registers (VOLTL/VOLTH) — Address 0x08/0x09

    15
  • Status Flag Register (FLAGS) — Address 0x0A

    15
  • Relative State-of-Charge (RSOC) — Address 0x0B

    15
  • Nominal Available Capacity Registers (NACL/NACH) — Address 0x0C/0x0D

    16
  • Last Measured Discharge Registers (LMDL/LMDH) – Address 0x0E/0x0F

    16
  • Compensated Available Capacity (CACL/CACH) – Address 0x10/0x11

    16
  • Fully-Charged Compensated Available Capacity (FCACL/FCACH) – Address 0x12/0x13

    16
  • Average Current Registers (AIL/AIH) — Address 0x14/0x15

    16
  • Time-to-Empty Registers (TTEL/TTEH) — Address 0x16/0x17

    16
  • Time-to-Full Registers (TTFL/TTFH) — Address 0x18/0x19

    17
  • Standby Current Registers (SIL/SIH) — Address 0x1A/0x1B

    17
  • Standby Time-to-Empty Registers (STTEL/STTEH) — Address 0x1C/0x1D

    17
  • Compensated End-of-Discharge Registers (CEDVL/CEDVH) – Address 0x20/0x21

    17
  • Time-to-Empty at Constant Power Registers (TTECPL/TTECPH) – Address 0x26/0x27

    17
  • Cycle Count Since Learning Cycle Registers (CYCLL/CYCLH) — Address 0x28/0x29

    17
  • Cycle Count Total Registers (CYCTL/CYCTH) — Address 0x2A/0x2B

    17
  • Compensated State-of-Charge (CSOC) — Address 0x2C

    18
  • Reserved Registers

    18
  • EEPROM Enable Register (EE_EN) — Address 0x6E

    18
  • EEPROM Data Registers (EE_DATA) — Address 0x76 — 0x7F

    18
  • Initial Last Measured Discharge High Byte (ILMD) — Address 0x76

    18
  • Scaled EDVF Threshold (SEDVF) — Address 0x77

    18
  • Scaled EDV1 Threshold (SEDV1) — Address 0x78

    19
  • Initial Standby Load Current and EDV1 Temperature Compensation (ISLC/EDVT) – Address 0x79

    19
  • Digital Magnitude Filter and Self-Discharge Values (DMFSD) — Address 0x7A

    19
  • Taper Current (TAPER) — Address 0x7B

    20
  • Pack Configuration (PKCFG) — Address 0x7C

    20
  • Gain Age Factor and EDV1 Discharge Rate Compensation (GAF/DEDV) – Address 0x7D

    21
  • Discharge Rate Compensation Coefficients (DCOMP) – Address 0x7E

    21
  • Temperature Compensation Coefficients (TCOMP) – Address 0x7F

    22
  • Power Modes

    22
  • Active Mode

    23
  • Sleep Mode

    24
  • Ship Mode (bq27010 only)

    24
  • Hibernate Mode

    24
  • Programming the EEPROM

    24
  • Communicating With the bq27010 (HDQ interface)

    25
  • Command byte

    26
  • Reading 16-bit Registers

    26
  • Communicating with the bq27210 (I2C interface - Product Preview)

    27