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參數資料
型號: MB81N643289
廠商: Fujitsu Limited
英文描述: DRILL BIT HIGH SPEED STEEL .021,1
中文描述: 8 × 256K × 32位的雙倍數據速率FCRAMTM
文件頁數: 38/64頁
文件大小: 1732K
代理商: MB81N643289
38
MB81N643289-50/-60
Preliminary (AE1E)
I
AC CHARACTERISTICS (continued)
Note:
DQS Access time (t
QSCK
) is measured from the cross point of clock (V
X
) and V
REF
.
The end of t
QSPST
and t
QSHZ
specification is defined at where output buffer is no longer driven.
Fig. 11 – AC TIMING of Read Mode (Clock to DQS Output Delay Time)
V
IL
DQS Output
(@BL=4)
t
CKQS
(min)
t
CK
V
X
CLK
CLK
t
QSPRE
t
CKQS
(max)
t
QSPST
t
CKQS
(min)
t
CKQS
(max)
t
CKQS
(min)
t
CKQS
(max)
t
CKQS
(min)
t
CKQS
(max)
t
CK
Hi-Z
t
QSLZ
(min)
t
QSHZ
t
QSP
t
QSP
t
QSP
DQ Data
Output
(@BL=4)
Note:
Access time (t
AC
) is measured from the cross point of clock (V
X
) and V
REF
.
The end of t
HZ
specification is defined at where output buffer is no longer driven.
Fig. 12 – AC TIMING of Read Mode (Clock to Data Output Delay Time)
V
IH
V
IL
t
CK
V
X
CLK
CLK
t
AC
(min)
t
LZ
(min)
t
AC
(max)
t
CK
t
AC
(min)
t
AC
(max)
t
AC
(min)
t
AC
(max)
t
AC
(min)
t
AC
(max)
t
OH
(max)
t
HZ
(max)
t
OH
(min)
Hi-Z
DQ Data
Output
(@BL=4)
Note:
DQS Output Edge to Data Output Edge Skew Time (t
QSQ
) is measured from V
DDQ
/2 to V
DDQ
/2.
Fig. 13 – AC TIMING of Read Mode (DQS Output to Data Output Delay Time)
V
IH
V
IL
V
REF
DQS Output
(@BL=4)
t
QSQ
(min)
t
QSQV
t
QSQV
t
QSQ
(max)
t
QSQV
t
QSQV
t
QSQ
(min)
t
QSQ
(max)
t
QSQ
(min)
t
QSQ
(max)
t
QSQ
(min)
t
QSQ
(max)
Hi-Z
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