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about the usage of sram and register file

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suituse

suituse

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Register file compiler can produce small memory as sram compiler does. And I have compared two memory generated by the regfile compiler (regfile) and sram copiler (sram) respectively with the the same parameters and found that the regfile got smaller area and the sram have moer driving capability. Is it the main difference between the regfile (compiler) and the sram (compiler) ? Will you give me more information.

Thanks
 

You haven't mensioned the parameters which you set to generate regfile
and memory. I guess you have generated regfile and memory for smaller
depths.
Generally for large storages more than 2k we use memory (size efficient )and for
smaller upto 2k or less we use register file.
 

I think that the size is based on your design. There is not one value to set this threshold one. You have to check with your memory designer. But the principle is not changed.
 

nand-gate is right,
most register-file compiler could not generate memory more than 2k words.
 

I also found that when I use the Artisan 0.18um memory compiler to generate a 16x68 memory. The sram compiler can't do it but regfile compiler can. The sram compiler report that the min words it can generate is 64. I think it is one of the main difference between them.
 

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