Forum Discussion

SudheerV's avatar
SudheerV
Icon for New Contributor rankNew Contributor
4 years ago
Solved

Cyclone V QSPI AS Configuration timing data

Hi, We are using Cyclone V (5CGXFC7B6M15I7N) in on of our design. We are doing the timing budget analysis for QSPI NOR Flash interface (AS Configuration). FPGA datasheet shows the DATA[] hold time...
  • TravisCovert's avatar
    TravisCovert
    4 years ago

    Hi Sudheer,

    You can use the 1.5nS. That will also protect you if you need to change to EPCQ-A device in the future because the EPCQ device is EOL (https://www.mouser.com/pcn/intel_corporation_pdn1708_rev_1.0.0.pdf).

    There is not much functional difference between the two. I think Intel's supplier for EPCQ shut down so they had to create a new part and called it EPCQ-A.

    Thanks,

    Travis

SudheerV's avatar
SudheerV
Icon for New Contributor rankNew Contributor
4 years ago

Hi Travis,

Looks like the snapshot you have provided is for the EPCQ64A devices with 1.5nS output hold time. We are using EPCQ64SI16N without 'A' suffix.

Can we use 1.5nS output hold time for EPCQ64SI16N as well?

Can you please elaborate what is the difference between EPCQ64A and EPCQ64 devices?

Thanks

Sudheer

TravisCovert's avatar
TravisCovert
Icon for Occasional Contributor rankOccasional Contributor
4 years ago

Hi Sudheer,

You can use the 1.5nS. That will also protect you if you need to change to EPCQ-A device in the future because the EPCQ device is EOL (https://www.mouser.com/pcn/intel_corporation_pdn1708_rev_1.0.0.pdf).

There is not much functional difference between the two. I think Intel's supplier for EPCQ shut down so they had to create a new part and called it EPCQ-A.

Thanks,

Travis

  • SudheerV's avatar
    SudheerV
    Icon for New Contributor rankNew Contributor
    4 years ago

    Thanks Travis for the information.

    This concludes our discussion.