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Visitor II
March 4, 2025
Solved

ST25R3918 I2C Question regarding BSS

  • March 4, 2025
  • 1 reply
  • 568 views

hello, im designing an RFID board, using the ST25R3918, no where in the datasheet have i been able to find what to do with BSS/MOSI (float, pull up or down). I saw that BSS is used with I2C regarding transparent mode, but that's not needed for my project
thank you

    This topic has been closed for replies.
    Best answer by Ulysses HERNIOSUS

    Hi,

    with my current view it is also a don't care whether you tie BSS to GND or VDD_IO. 

    BR, Ulysses

    1 reply

    Technical Moderator
    March 5, 2025

    Hi danyavin,

    Better to tie BSS and MOSI to defined values to avoid additional current. I am investigating whether one or the other level for BSS would be preferred. For MOSI it is really a don't care if GND or VDD_IO.

    BR, Ulysses

    danyavinAuthor
    Visitor II
    March 12, 2025

    thank you very much, would love an update

    Technical Moderator
    March 12, 2025

    Hi,

    with my current view it is also a don't care whether you tie BSS to GND or VDD_IO. 

    BR, Ulysses