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ViniNess's avatar
ViniNess
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2 years ago

EPM3128 5v output

Hi guys, fine? I read on datasheet that the EPM3128 can output 5v, but when i go to pin planner i just can se 2.5v or 3.3v How can i config to 5v output? Thanks
Programmable Logic Device
FvM's avatar
FvM
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2 years ago

Hi,

did the MultiVolt I/O chapter answer your question?

MAX3000A can't drive higher output voltage than 3.3V VCCIO. It's sufficient high level for 5V TTL but possibley not 5V CMOS which requires e.g. 0.7*5 = 3.5 V minimal Vih. You can configure MAX3000A output as open drain and achieve 5V output with pull-up resistor in this case.

  • ViniNess's avatar
    ViniNess
    Icon for New Contributor rankNew Contributor
    2 years ago

    Hi

    "did the MultiVolt I/O chapter answer your question?"
    Not much, i'm kind confused

    So, i want to send a 8-bit dataline to a 5V processor
    How can i config those pins to open drain?

    The restant of the system is 3.3V

    • FvM's avatar
      FvM
      Icon for Super Contributor rankSuper Contributor
      2 years ago
      Hi,
      not sure if there's an open drain output option in assignment editor for MAX3000, too many years since I used this device family. Depending on your design entry method, open drain can be setup in HDL or graphic design.