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What is the usage of memory library from the PDK?

dogrush

Hi,

I have noticed that there are always memory libraries for the foundry provided PDKs.

I suppose that these memory library are for digital implementations. That is, using synthesis tools, the memory could be utilized.

But I am wondering whether the memory libraries are a must?

I mean, if I have a small design, such as encryption or decryption core.

I have tried that such a small core could be synthesized by using synthesis tools without the memory libraries.

I am wondering how the synthesized circuits realize the memory functional cells without the memory libraries?

And, what is the difference between the synthesized design with and without the memory libraries?

Thanks.

Jerry

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  • Hi Jerry,

    memories are not a must for synthesis but usually more efficient than individual registers at the expense of speed and ability to customize configuration. Memories in synthesis tools normally cannot be inferred and have to be instantiated (hard-coded in RTL)

    hope this helps,

    gh-

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  • Hi Jerry,

    memories are not a must for synthesis but usually more efficient than individual registers at the expense of speed and ability to customize configuration. Memories in synthesis tools normally cannot be inferred and have to be instantiated (hard-coded in RTL)

    hope this helps,

    gh-

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