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BQ34Z100-G1: Chem ID programming

Evan Beeton
Prodigy 120 points
Part Number: BQ34Z100-G1
Other Parts Discussed in Thread: BQ34Z100, BQ34Z100EVM, , EV2400, BQSTUDIO

Based on the documentation offered:

1. SLUSBZ5D

2. SLUIBW5A

3. SLUA664

4. SLUA665

It seems to be possible to configure the Data Flash of the BQ34Z100 without using Battery Management Studio.  However, there is no documentation that I've found that covers the programming of the Chem ID other than through Battery Management Studio.  So, what fields in the Data Flash does Battery Management Studio program during this operation?

This leads to another question, is there a way to connect Battery Management Studio to the BQ34Z100-G1 on our hardware platform?  It would seem that the Battery Management Studio, the interface EV 2400 and the BQ34Z100EVM are made to work together in an exclusive fashion.  Which implies that Golden Image Files are not sensitive to the actual hardware used "around" the BQ34Z100-G1.  In other words, a Golden Image File generated via the aforementioned eval / demo kit setup, would be the same golden image file generated on the actual hardware.

  • 0
    TI__Guru 57697 points

    Hello Evan,

    It is possible to configure data flash of the bq34z100 without using Battery Management Studio. The data flash access section of the TRM covers the commands used to write data flash. Chemistry ID is not just a single location and the data format is not published. This must be programmed from Battery Management Studio.

    The golden image contains the chemistry data, therefore it is not necessary to know how to program chemistry ID.

  • 0 in reply to Shirish
    TI__Guru 57697 points

    Hello Evan,

    The answer to the second question is yes. You can connect the communication lines from the EV2400 to your production board. Just make sure that the micro controller on your system is not doing anything that causes interference in communication. Then you can use Battery Management studio

  • 0 in reply to Shirish
    Prodigy 120 points

    I can successfully program the BQ34Z100-G1 using our hardware.  But as you noted, information related to chemistry is not documented, as such I can not program the chemistry section of the BQ34Z100-G1.  This is puzzling as everything else is well documented.

    I do appreciate the fact that I can connect the EV2400 to our hardware, but this requires the SDA and SCL lines to be exposed.

    Seems like I am in a catch-22.

  • 0 in reply to Evan Beeton
    TI__Guru 57697 points

    Hello Evan,

    Chemistry data information is not published by TI because it is not in a user readable format. That data is only understood by the algorithm. If the intent is to reprogram the golden image, then you can create a bq.fs file from bqStudio and use that to program from your own hardware.

  • 0 in reply to Shirish
    Prodigy 120 points

    I understand.