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Can I access the 0x54(sbs cmd)register,if the device in the sealed mode?

Jerry Zhu3
Intellectual 345 points

Hi,TI experts,

   I have a few questions to ask you. 

   1. Can I access the 0x54(sbs cmd)register (not the 0054 ManufacturerAccess register ),if the device in the sealed mode? 

   2. What scenarios are these 3 modes applied to(sealed,unsealed,full access)? What are the specific differences of them?

   3.Is there any risk if the battery has been used in unsealed mode?

Thanks!

  • 0
    TI__Mastermind 42535 points
    Yes, you can read it.
    sealed, df is not accessible
    unsealed, df is accessible but device is not programmable or put in fw update mode.
    full access, all df and ram portions are accessible. device fw can be programmed.

    risks in unseal mode during production use is that any and all parameters can be changed in df.