a question about SDRAM's BURST LENGTH !

[chrometta]

sdram burst length

Hi.
Now it's a big problem.I thought that a SDRAM's FULL PAGE BURST LENGTH can be very very long,such as 1M or even 2M.But seems that it is just 256. I can not find any exact explanation in those chips' datasheet.Can someone give me an exact answer?
thanks!

 

[placaplaca2]

Depends on the model you use and its structure x8 x16 x32, the typical burst size is 512, 1024, 2048 bytes long.

Refer to ISSI or Micron datasheets.

 

[chrometta]

Thanks a lot!