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Combinational or Sequential Multipliers ?????????

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natg9

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sequential multipliers

Hi all

i have this doubt , as to which of the two is better in terms of area, timing ??

Combinational or Sequential Multipliers

please list out the various methods and advantages


thanks to all
 

combinational and sequential multiplier

Combinational multipliers are slow and take a lot of area.
Sequential multipliers are fast and take less area.
Sequential multipliers may take a number of clock cycles to produce a result. So even they can work on high frequency clock, but the latency in terms of absolute time go get an output may be more or equal to that of a combinational multiplier.
Hope it helps
Kr,
Avi
 

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    natg9

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Hi Avimit

Now I am aware of the fact that inc combinational multipliers area is more and speed is slower then do we never use combinational multipliers i want to know this ?

i am in a project that demands higher speed so i have opted for a seq multiplier but i am not able to decide which seq multiplier will give me optimum speed

please reply pal


regards
natg
 

As I said the sequential mutliplier can use a number of clock cycles, it may not be the best solution always. If the numbers you want to multiply are small, then a combi multipiler is ok, as it is very easy to code, and can be written as a * sign anywhere in the code. You will hardly see a seq multiplier if 2 small numbers are being multiplied.
Kr,
avi
 

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    natg9

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Hi Avi

ok to be specific for my case i will be building a 8X8 multiplier

so is combinational better here

thanks for the earlier replies
 

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