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DAC43401-Q1: Can I set a power on reset value and store in NVM?

Ashiful Khurashi
Prodigy 40 points
Part Number: DAC43401-Q1

Hi. I'm looking to put the 

DAC43401-Q1 into a design but I would like to confirm that I can set the power on reset value and store in NVM, such that during power up the device will output a pre-defined value. For our application we need the DAC to start up at 2.5V, although it would be nice to be able to power up to a different value.

  • 0
    TI__Mastermind 25503 points

    Hi Ashiful,

    You are correct. After writing the code for 2.5V to the DAC_DATA register and then writing a 1 to the NVM_PROG field of the TRIGGER register, the device will power up to 2.5V. If this value needs to be changed later, you can write a new value to the data register and reprogram the NVM. 

    By default, the device is in power down (HiZ) mode. You will also need to write 0b00 to the DAC-PDN field in the GENERAL_CONFIG register to power up the output before programming the NVM. 

    Best,

    Katlynne Jones