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bq34z100-G1

Richard Griph
Intellectual 530 points
Other Parts Discussed in Thread: BQ34Z110, BQ34Z100-G1, BQSTUDIO

Hello all,

In looking into the bq34z100-G1 as a replacement for bq34z110 since I found a forum posting that advised it would be best to switch to it if not too far along in a design.  In doing that I found that unlike the bq34z110 part, after turning the impedance tracking on the bq34z100-G1 acts much like its sealed and does not allow any flash value to be changed.  Relative to the bq34z110 I saw a forum posting saying setting the status update flash register back to zero unblocked some blocked flash locations that get blocked when turning the IT algorithm on.  However that does not work with the bq34z100-G1 either.

I have been re-flashing the golden file to work around that but I was wondering if there is any way short of that to update the flash?  I was also wondering if there is any documentation as to how to program the golden file outside of bqstudio too?  I have a test setup where I can run the TI provided tools but was intending originally to use the bq34z110 and set its parameters with I2C commands through an embedded processor in production.  To update boards that have bq34z110 chips to the bq34z100-G1 requires the flash update step and I would like to add that to the embedded processor's FW so I can automate the process.

  • 0
    TI__Guru 73830 points
    You can check a couple of things that will prevent flash updates. If you have a 6S PbA pack, then you can set the Flash Update OK voltage to 1000mV. You can also try sending the CALEN command. You can use bqStudio to export a df.fs file. this file contains the commands and data to update the data flash. You should be able to use this to program the device with your uC.
  • 0 in reply to ThomasCosby
    Intellectual 530 points

    Thanks, that seems to have fixed it.

    Using the df.fs file worked well and reset the impedance tracking which allowed me to change flash parameters and turn the IT back on.  Short of doing that, it seems like once the Impedance tracking is turned on for the BQ34z100-G1 the flash becomes read only and your other suggestions did not work.

    I was wondering if a bq34z110 can be converted with the .fs files to the bq34z100-G1 FW?

  • 0 in reply to Richard Griph
    TI__Guru 73830 points
    The bq34z110 data flash cannot be imported into the bq34z100-G1 device. The parameters will need to be updated manually. Fortunately, there are not too many of them.