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Altera_Forum
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18 years ago

Cyclone II Serial Config

I'm having a rather odd problem and I was wondering whether anyone else has experienced it. I'm using an M25P40 serial prom with an EP2C20. Standard setup, in fact we reused the schematics fro...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
18 years ago

Hi stephenzhou,

it really doesn't matter. The pullups are just, i would say, nice to have. :cool: You can bypass them an connect those pins directly to VCC if you want to. (When you don't have the place or its to expensive).

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so did you use M25P10? M25P80? M25P16 for EPCS1?

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I always used the M25P40 as replacement for the EPCS4 because there was no need for smaller parts. I'm not really sure, but i would say the M25P10 is comparable to EPCS1.

I would advise you to compare the datasheets of the M25Pxx devices with the datsheets of EPCSx devices, then you will see what you need. (I hope so!)

Christian