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Altera_Forum's avatar
Altera_Forum
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14 years ago

2.5V AS serial configuration device?

I'm finising off a spin of a board and trying to move from VCCIO of 3.3V to 2.5V. We're pin constrained so I'm moving the banks with the configuration pins too.

I'm using active serial config and can't find an EPCS16 equivalent that works down to 2.5V.

My friendly apps guy has pointed me to some NXP level translators but space is reasonably tight and I'd prefer to do without these if I can.

I presume Quartus still checks the device ID and balks if it doesn't think it's an EPCSXXX? (Altera, can you stop this?).

Has anyone got a good solution for...

EPCS16 compatible.

2.5V operation.

Thanks for any pointers,

Nial.

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  • Altera_Forum's avatar
    Altera_Forum
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    14 years ago

    the only part i've used is the first one i've mentioned. i always use .jic files

    what's your timeline? next time i buy parts i could try that 16Mbit device
  • Altera_Forum's avatar
    Altera_Forum
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    14 years ago

    The timeline is to get something out ASAP.

    It looks like the spansion EPCS16 equivalent and a small linear regulator is cheaper than the Atmel device so I'm planning to use that but will include 0R links to use the 2.5V rail as an option.

    Thanks for the feedback, it's good to know there are other alternatives if you're using indirect programming!

    Nial
  • Altera_Forum's avatar
    Altera_Forum
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    14 years ago

    yeah i think i'll order the 16Mbit flash next time just to test it. i didn't realize the part i'm using only goes up to 4Mbit