Two port vs dual port memories

[fragnen]

What are all the differences between a two port memory and advantages of a dual port memory? What are the advantages and disadvantages of two port and also of dual port memories? In what circumstances in reality we go for a two port memory instead of a dual port memory? In what circumstances in reality we go for a dual port memory instead of a two port memory?

 

[FvM]

You find answers in the "similar threads" below. Personally, I doubt that the answers are hitting the point. The two terms are at least overlapping, often used as synonyms. You better ask for specific features of multiport RAM designs instead of interpreting words.

 

[fragnen]

FvM,
Those posts were seen. In those posts it is mentioned that any port of a dual port memory can be read/write out of the two ports but for two port memory one port will be read only and another port will be write only. If this is correct then read and write can be done using both the ports at same time for two port memories also. How those threads then mention that read and write at the same time cannot be done for a two port memory but can be done for a dual port memory?

Regards

 

[ThisIsNotSam]

It probably has to do with how the memory is implemented internally. 6T vs 8T.

 

[fragnen]

It probably has to do with how the memory is implemented internally. 6T vs 8T.

Can you please elaborate little more? Do you want to mean that dual port and two port differs in the implementation of bit cell with respect to number of cells?

 

[ThisIsNotSam]

number of transistors, not number of cells. see:

 

[fragnen]

number of transistors, not number of cells. see: View attachment 171861

Do you want to mean that dual port and two port differs in the implementation of bit cell with respect to number of transistors?

 

[ThisIsNotSam]

they might. I cannot be certain though, as other have mentioned, the terminology is not used consistently.