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December 6, 2022
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What's the difference between Direct Commands C0 & C1 on the ST25R3916?

  • December 6, 2022
  • 1 reply
  • 725 views

C0 and C1 are both stated as "Set Default". Do I need to send both or can it be either, and if it either, why are there 2? The same question can be asked about C2 & C3 as well.

And does any know what RFU means in the ST3916 datasheet?

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

    Hi,

    you can send either one. You could look at it as one command with LSB being "don't care".

    RFU: Reserved for Future Use. Please don't set or clear those bits. Best doing Read-modify-write operations leaving the RFU bits at the read value.

    BR, Ulrich

    1 reply

    U
    Ulysses HERNIOSUSAnswer
    Technical Moderator
    December 7, 2022

    Hi,

    you can send either one. You could look at it as one command with LSB being "don't care".

    RFU: Reserved for Future Use. Please don't set or clear those bits. Best doing Read-modify-write operations leaving the RFU bits at the read value.

    BR, Ulrich

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