Memory access time: What does it mean?

[rlt]

At http://www.mushkin.com/cgi-bin/Mush...fc0bf4098827400a00010205d4+EN/products/990108 Mushkin says that they have a a 256MB CAS-2 ECC chip with 6ns access time and 8ns cycle time. Everyone I talk to is arguing that it's impossible to have 6ns access time.

My questions are: What are they refering to when they say access time? Why does everyone seem to think that this chip has to be either 50ns or 60ns? What are they refering to when they are saying 50 or 60ns?

Can anyone shed some light on this for me? It would be greatly appreciated.

Thanks in advance!

-Rick

 

[Howard]

EDO memory is 60ns...

 

[esung]

access time refers to the time between the data request and the time data actually returns. cycle times refers to the time between successive data reads. 6ns access time and 8ns cycle is about right, although on the fast side. but SDRAM usually rated in Mhz instead of the nanosecond rating on the asynchronous DRAMs.

I don't know who you are talking to have 50ns access time.. like Yucky said, the EDO DRAM has this kind of speed rating. SDRAM were much faster.