参数资料
型号: MB81N643289
厂商: Fujitsu Limited
英文描述: DRILL BIT HIGH SPEED STEEL .021,1
中文描述: 8 × 256K × 32位的双倍数据速率FCRAMTM
文件页数: 37/64页
文件大小: 1732K
代理商: MB81N643289
37
MB81N643289-50/-60
Preliminary (AE1E)
I
AC CHARACTERISTICS (continued)
Note:
Reference level for AC timings of clock are the cross point of CLK and CLK as specified in V
X
.
Fig. 8 – AC TIMING of CLK & CLK
t
CL
t
CK
t
OH
CLK
V
SWING(AC)
V
X
CLK
t
IS
t
IH
Input
(Controls &
Addresses)
Fig. 9 – AC TIMING of Command Input & Address
V
REF
Input Valid
V
IH (AC)
V
IL (AC)
t
CK
V
X
CLK
Note:
The cross point of CLK and CLK (V
X
) is used for command and address input.
The reference level of single ended input is V
REF
.
CLK
Input
(Data&DM)
Fig. 10 – AC TIMING of Write Mode (Data Strobe, Write Data and Data Mask Input)
t
DS
t
DH
t
DS
t
DH
V
REF
V
IL
DQS Input
(@BL=4)
Input Valid
Input Valid
t
CK
t
CK
CLK
CLK
t
IS
t
IH
Input
(Controls &
Addresses)
V
REF
Write Command
V
IH (AC)
V
IL (AC)
t
DQSS
t
DIPW
V
REF
t
DS
t
DH
t
DS
t
DH
Input Valid
Input Valid
t
DSPST
t
DSPRES
t
DSPREH
t
DQSS
t
DSPRE
t
DSS
t
DSH
t
DIPW
t
DIPW
t
DIPW
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