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Binoyjohnson's avatar
Binoyjohnson
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2 years ago
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Cyclone V GPI Maximum Input limit - 5CSEBA4U23I7N

Hi We are using the GPI pins in the Cyclone V processor. Our DDR voltage is 1.35V. What is the maximum input voltage these pins can tolerate? pins are listed below. In our design we have connected...
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  • mabdrahi's avatar
    mabdrahi
    2 years ago

    Hi Binoy


    From the De1-SOC-Schematics you can see, that all banks have vcio=3.3V

    vcio=3.3v (except the HPS-banks which use 1.5V

    1.5v). Pins on these banks will correctly detect 2.5V CMOS input , but they will not be able to generate 2.5V output.



    Thank you,

    Aliff


Binoyjohnson's avatar
Binoyjohnson
Icon for New Contributor rankNew Contributor
2 years ago

Thanks for clearing the doubt.

We had a confusion regarding the following pins.

HPS_GPI13 - V24

HPS_GPI12 - AC27

HPS_GPI9 - Y26

HPS_GPI6 - T17

Since these pins are belongs to BANK 6B and our 6B bank voltage is connected to VDDR = 1.35V.

If you can mention the datasheet location it would be great.

Thanks Regards

Binoy Johnson