SLUAAM4 December   2023 BQ76905 , BQ76907

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Direct Commands
    1. 1.1 Alarm Enable - 0x66
    2. 1.2 Cell 1 Voltage - 0x14
    3. 1.3 Internal Temperature - 0x28
    4. 1.4 CC2 Current - 0x3A
    5. 1.5 Direct Command Summary
      1. 1.5.1 Disabling Auto Refresh
  5. 2Subcommands
    1. 2.1 DEVICE_NUMBER - 0x0001
    2. 2.2 FET_ENABLE - 0x0022
    3. 2.3 RESET - 0x0012
    4. 2.4 CB_ACTIVE_CELLS - 0x0083
    5. 2.5 Subcommand Summary
  6. 3Reading and Writing RAM Registers
    1. 3.1 Read Enabled Protections A
    2. 3.2 Enter CONFIG_UPDATE Mode
    3. 3.3 Write Enabled Protections A
    4. 3.4 Write VCell Mode
    5. 3.5 Exit CONFIG_UPDATE Mode
    6. 3.6 Reading and Writing RAM Registers Summary
  7. 4I2C With CRC
  8. 5Simple Code Examples
  9. 6References

1.2 Cell 1 Voltage - 0x14

Table 1-2 shows how to read the voltage for Cell 1. The Cell 1 Voltage command is 0x14 and is a read only command. The Cell 1 voltage is read by writing the I2C command 0x14 followed by a 2-byte read. The data is returned in little endian format. In Figure 1-2, the 16-bit Cell 1 voltage reads 0x0C0C, which corresponds to 3,084 mV.

Table 1-2 Cell 1 Voltage Command Description
CommandNameUnitsTypeDescription
0x14Cell 1 VoltagemVI216-bit voltage on cell 1
GUID-20220822-SS0I-VJHN-WWLP-74RQQLCLNXSP-low.png Figure 1-2 Captured I2C Waveform for Cell 1 Voltage Reading