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UCC5870-Q1: Volatile or non-volatile memory

Danilo A.
Mastermind 27530 points
Part Number: UCC5870-Q1

Hi Team,

According to our customer, the E2E thread below stated that the registers are all volatile.

https://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1004211/ucc5870-q1-are-the-registers-non-volatile-and-can-the-chip-be-used-without-using-spi-after-configuration?tisearch=e2e-sitesearch&keymatch=UCC5870-Q1 

However, Section 7.3.5.15 stated "and the internal non-volatile memory that store the trim information " and  Section 7.3.5.18 also mentioned "After each power up, the device performs a TRIM CRC check on the internal non-volatile memory" 

Our customer would like to clarify if the UCC5870-Q1 has non-volatile memory.

Regards,

Danilo

  • +1
    TI__Expert 5921 points

    Hi Danilo,

    All user configurable registers are volatile, meaning that after power up all user configurable registers must be rewritten. This includes all registers listed in the datasheet register map. 

    The non-volatile trim registers mentioned in section 7.3.5.18 are not user accessible and should never change.

    I hope this answers your question, if not please let us know how we can further help. 

    Regards,

    Daniel