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are gpio pins 5v tolerant ?

Rob
Rob New Member Posts: 7 ✭
in UP Squared Hardware Specification

cannot find this in the wiki or up2 datasheet.

what is the tolerance on the gpio pins ? can i put 5v on them or max 3.3 volt

regards,
Rob Bothof

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  • Kurt
    Kurt New Member Posts: 146 ✭✭

    I am pretty sure I have read that they are not 5v tolerant, but could be wrong.

    I would assume it is like the RPI and only 3.3v. Also the other special connector I believe is only 1.8v

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  • erenaud
    erenaud New Member Posts: 9 ✭

    I can't believe how hard it is to find a complete datasheet for Up Squared (and no, you can't call this two pages "user manual" a datasheet)... We have litteraly no informations except the wiki, which seems pretty old. Does anyone know more about pins tolerance ?

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  • Kurt
    Kurt New Member Posts: 146 ✭✭

    Again it would be great if some one from UP/Emutex answered. But again I do not believe that the pins will handle 5v.

    That is by the Kickstarter for UP squared as well as the 2 sheet document, it mentions using an Intel Max 10 FPGA for the IO pins.

    And if you look at the documents for the Max 10, such as:
    https://www.altera.com/documentation/luo1479889762304.html

    And again I don't know how it is hooked up to the main board (single power, multiple power), but the highest voltage I see is 3.3v.
    With multiple power in, it mentions things like:

    Table 12. Power Supply Sharing Guidelines for Intel® MAX® 10 (Dual Supply) FPGA – Using the ADC Feature and VCCIO[2..8] Pins are Powered Up at 1.2V/1.35V/1.5V/1.8V/2.5V/3.0V/3.3V. Example Requiring 4 Power Regulators

    But again hopefully some one else has more definitive answers.

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  • elmout
    elmout New Member Posts: 1 ✭

    Hello,
    I reopen this subject as i could not find anything on this forum/wiki and upsquare documentation and i need to build a custom electronic board.
    For all GPIO:
    What is the Vol_max, Voh_min/max, Vilmax, Vih_min/max?
    What is the max Isink/Isource capabilities by pin and over all pins ?
    Regards

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