CHAPTER 1 PRODUCT SPECIFCATIONS
User's Manual A19069EJ2V0UM
29
(c) Refresh Timing (SDRAM access
)
Figure 1-11. Refresh Timing (SDRAM Access)
TRPW ALLPRE REFW
REFW
TREF
REFW
< t
DKCS
>
< t
DKCS
>
< t
DKRAS
> < t
DKRAS
>
< t
DKCAS
>
< t
DKWE
>
< t
DKCS
>
< t
DKCS
>
< t
DKRAS
> < t
DKRAS
>
< t
DKCAS
>
< t
DKWE
>
< t
DKREF
>
< t
DKREF
>
REFW
TRPW TRPW TRPW
H
BUSCLK
(output)
A0-A25
(output)
REFRQZ
(output)
CSZn
Note
(output)
SDRASZ
(output)
SDCASZ
(output)
SDWEZ
(output)
DQM0-DQM3
(output)
SDCKE
(output)
< t
DKA
>
< t
DKA
>
H
Note
n = 1, 3, 4, 6