參數(shù)資料
型號: HYB18T512160AF
廠商: INFINEON TECHNOLOGIES AG
英文描述: 512-Mbit DDR2 SDRAM
中文描述: 512兆位DDR2 SDRAM的
文件頁數(shù): 71/117頁
文件大?。?/td> 2102K
代理商: HYB18T512160AF
Data Sheet
71
Rev. 1.3, 2005-01
09112003-SDM9-IQ3P
HYB18T512[40/80/16]0AF–[3/3S/3.7/5]
512-Mbit DDR2 SDRAM
Functional Description
Figure 56
Active Power-Down Mode Entry and Exit Example after a Read Command
R-EE
Note:Active Power-Down mode exit timing t
XARD
(“fast exit”) or t
XARDS
(“slow exit”) depends on the programmed
state in the MR, address bit A12.
Figure 57
Active Power-Down Mode Entry and Exit Example after a Write Command
WL = 2,
t
WTR
= 2, BL = 4
Note:Active Power-Down mode exit timing
t
XARD
(“fast exit”) or
t
XARDS
(“slow exit”) depends on the programmed
state in the MR, address bit A12.
NOP
NOP
READ
READ w/AP
T0
T2
T1
T3
T4
T5
T6
T7
T8
Dout A0
Dout A1
Dout A2
Dout A3
RL = 4
CL = 3
CMD
DQ
DQS,
DQS
NOP
NOP
NOP
NOP
NOP
NOP
Tn
Tn+1
CKE
AL = 1
Active
Power-Down
Entry
RL + BL/2
NOP
NOP
Act.PD 1
tIS
Tn+2
tIS
Active
Power-Down
Exit
Valid
Comm and
tXARD or
tXARDS *)
CK, CK
tXP
NOP
NOP
Precharge
*)
T0
T2
T1
CMD
NOP
NOP
Tn
Tn+1
CKE
Precharge
Power-Down
Entry
NOP
NOP
tIS
Tn+2
tIS
Power-Down
Exit
Valid
Com mand
tRP
NOP
T3
CK, CK
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