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DS92LX1621: PDB pin management

Part Number: DS92LX1621

Hello all,

On component  datasheet is stated that " is required to delay and release the PDB input signal after VDD settling" but I can't found how long I should delay PDB again VDD.

In our application we don't need power down mode; in this case, can we connect it directly to VDDIO ?

Thank in advance

Stefano

  • Hello Stefano,

    Hello thanks for reaching out. Please do not tie PDB to VDDIO directly as it does need to come up after the power supplies have settled. There is no minimum requirement explicitly stated, so our typical suggestion is to use a 10k pullup and a 10uF cap to GND in order to sufficiently delay the PDB signal. 

    Best Regards,

    Casey