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Original question:

TPS65680: Can't write data to OTP memory

TPS65680: An question of OTP memory program times

NObody
Expert 1100 points
Part Number: TPS65680

Hi, All：

I find a describe as below form datasheet

Prior to initiating the programming sequence, a check is performed to ensure enough memory is available to hold the new settings, and the device has been programmed less than 9 times.

It means we can't program OTP memory over 9 times, right?? (I think this is a possible cause of OTP can't programed issue.)


If the answer is no, provide how many times of programable please.

  • 0
    TI__Mastermind 18550 points

    Hello,

    Yes it is correct that the device can not be programmed more than nine times.

    Kind Regards,

    Liaqat

  • 0 in reply to Liaqat Khan
    Expert 1100 points
    Hi, Liaqat：

    Thanks for your reply, another question, may I got programmed times form register 0xF2 ~ 0xFA?

    If yes, what change in these register after programmed?
  • 0 in reply to NObody
    TI__Mastermind 18550 points
    Hello,
    I was reviewing the threads that I had responded to and realized that this thread is still open.
    You can figure out how many times the device has been programmed by reading register 0xF2 through 0xFA and see how many of these registers have a byte count that is greater than zero. For example, say only register 0xF2 and 0xF3 have a byte count greater than zero and all other registers have byte count of zero. That would mean that the device has only been programmed two times.
    I hope this answers you questions.
    I will close this thread but if you have any other questions, please open another thread and someone will respond.
    Kind Regards,
    Liaqat