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chaitanya jasti
chaitanya jasti
Associate II
February 28, 2017
Question

X-NUCLEO-IDW01M1 -WHY level shifter is used in the board

  • February 28, 2017
  • 1 reply
  • 526 views
Posted on February 28, 2017 at 16:50

Hi,

In x-NUCLEO-IDW01M1 -WHY level shifter(3.3v to 2.5v ) is used in the board?

RTS and CTS are tolerent to 5v but it is shifted to 2.5v,why?

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    1 reply

    Tesla DeLorean
    Tesla DeLorean
    Guru
    February 28, 2017
    Posted on February 28, 2017 at 19:35

    Being tolerant and having undesirable current flows are two different things. The boards targets low power / low voltage applications. A significant number of pins aren't tolerant, and a robust design will likely need you to work in the 2.5V domain.

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