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BQ30Z554-R1: My questionable MPN is Q30Z554DBTR-R1 - Functional Failure

Other Parts Discussed in Thread: BQ30Z554-R1


8pcs with functional testing failure observed, detail as below.  

  • Fail on BQ30Z554-R1 Programming
  • The IC is not able to enter the ROM mode for programming

Further Testing Performed:

1. TI parts have been tested through by A-B-A swap cross check. Confirmed the observed issue is not system related.

2. Check the pin resistance especially pin 13 and 15 -> no abnormality found on pin 13 and pin 15 between bad and good unit (measured 1.4Mohm). 

3. We can not proceed by manual programming, same error pop up.

  • Hello,

    The gauge will not allow entry into ROM mode unless you are in an unsealed and full-access mode. Please ensure you are not sealed during your testing. Besides this there should be nothing blocking entry into ROM mode.


    Wyatt Keller