shield with 3V controller

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This topic contains 1 reply, has 2 voices, and was last updated by  Gra Afch 5 years, 1 month ago.

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  • 13.11.2019 at 08:20 #25428

    hamish-graafch
    Participant

    Is it possible to use the shield (NCS312 specifically) with a controller with 3V logic?

    I see in the schematic that the SCK, MOSI and LE pins go through the CD4504BM level converter. The SCL/SDA pins don’t though, but if I don’t want to access the RTC chip I could remove the SCL/SDA pullups and that shouldn’t matter. Anything else?

    18.11.2019 at 15:11 #25445

    Gra Afch
    Keymaster

    Hello.

    I must say that we have not been testing it with 3 V logic controller.
    And most likely it will not work.
    You can try it out.
    Remove as you said the SCL/SDA pullups and two resistors from DS3231SN (RTC).
    Write back then on your findings.

    Regards.

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