參數(shù)資料
型號: MB814265-70
廠商: Fujitsu Limited
英文描述: CMOS 256K ×16 BIT Hyper Page Mode Dynamic RAM(CMOS 256K ×16 位超級頁面存取模式動態(tài)RAM)
中文描述: 的CMOS 256K × 16位的超頁模式動態(tài)RAM的CMOS(256K × 16位超級頁面存取模式動態(tài)內(nèi)存)
文件頁數(shù): 20/28頁
文件大?。?/td> 364K
代理商: MB814265-70
20
MB814265-60/MB814265-70
Fig. 13 – HYPER PAGE MODE DELAYED WRITE CYCLE
DESCRIPTION
The hyper page mode delayed write cycle is executed in the same manner as the hyper page mode early write cycle except for
the states of WE and OE. Input data on the DQ pins are latched on the falling edge of WE and written into memory. In the hyper
page mode delayed write cycle, OE must be changed from Low to High before WE goes Low (t
OED
+ t
T
+ t
DS
).
“H” or “L”
VALID
DATA IN
VALID
DATA IN
COL
ADD
COL
ADD
ROW
ADD
HIGH-Z
Invalid Data
DQ
(Input)
DQ
(Output)
RAS
V
IH
V
IL
V
IH
V
IL
V
IH
V
IL
V
IH
V
IL
V
IH
V
IL
LCAS
or
UCAS
WE
A
0
to A
8
V
OH
V
OL
V
IH
V
IL
OE
t
RASP
t
CRP
t
CSH
t
RCD
t
CAS
t
CP
t
HPC
t
RSH
t
CAS
t
ASR
t
RAH
t
ASC
t
CAH
t
ASC
t
CAH
t
CWL
t
AR
t
RCS
t
WCH
t
CWL
t
WP
t
WCH
t
WP
t
RWL
t
DS
t
DZC
t
DS
t
DH
t
DH
t
DZO
t
OED
t
ON
t
OEH
t
ON
t
OEZ
t
ON
t
OEH
t
OEZ
t
OED
t
ON
t
RP
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