Pull Down resistor for RTS and DTR

5 thoughts on “Pull Down resistor for RTS and DTR

  1. Hi all.

    I want add Pull Down resistor to DTR RTS.. I try put big value (390k) and it’s too big.. What is internal pull up resistor value??

     

    1. Hi Sevc,

       

      we don’t declare internal pull up but if you need to tie to 0 the input 390K is really to big resistor. The minimum drift current can rise up the level.

      Please try tenths of K , 10 or 16K