CHAPTER 1 PRODUCT SPECIFCATIONS
User's Manual A19069EJ2V0UM
26
(2) SDRAM access timing
Table 1-13. SDRAM Access Timing
Parameter Symbol
MIN.
MAX.
Unit
Address delay time (from BUSCLK
↑
) t
DKA
1.5
11.0
ns
BCYSTZ delay time (from BUSCLK
↑
) t
DKBC
1.5
9.0
ns
CSZn
Note
delay time (from BUSCLK
↑
) t
DKCS
1.5
11.0
ns
SDRASZ delay time (from BUSCLK
↑
) t
DKRAS
1.5
11.0
ns
SDCASZ delay time (from BUSCLK
↑
) t
DKCAS
1.5
11.0
ns
SDWEZ delay time (from BUSCLK
↑
)
t
DKWE
1.5
11.0
ns
DQM0-DQM3 delay time (fro
m BUSCLK
↑
)
t
DKDQM
1.5
11.0
ns
SDCKE delay time (from BUSCLK
↑
) t
DKCKE
1.5
11.0
ns
Data input setup time (SDRAM read, from BUSCLK
↑
) t
SKDRM
3.8
−
ns
Data input hold time (SDRAM read, from BUSCLK
↑
) t
HKDRM
1.0
−
ns
t
DKDT1
1.5
11.0
ns
Data output delay time (from BU
SCLK
↑
)
t
DKDT2
1.5
11.0
ns
Data float delay time (from BUSCLK
↑
) t
HZKDT
1.5
11.0
ns
REFRQZ time (from BUSCLK
↑
) t
DKREF
1.5
11.0
ns
Note
n = 1, 3, 4, 6
