參數(shù)資料
型號: MB8117800A-70
廠商: Electronic Theatre Controls, Inc.
英文描述: 2 M X 8 BIT FAST PAGE MODE DYNAMIC RAM
中文描述: 2的MX 8位快速頁面模式動態(tài)隨機(jī)存儲器
文件頁數(shù): 19/27頁
文件大?。?/td> 580K
代理商: MB8117800A-70
19
MB8117800A-60/-70
DESCRIPTION
The fast page mode delayed write cycle is executed in the same manner as the fast 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 fast page mode
delayed write cycle, OE must me changed from Low to High before WE goes Low (t
OED
+ t
T
+ t
DS
).
Fig. 11 – FAST PAGE MODE DELAYED WRITE CYCLE
t
ASC
RAS
V
IH
V
IL
CAS
V
IH
V
IL
t
RASP
t
CSH
t
RCD
t
PC
t
RP
t
RSH
t
CAS
t
CAH
t
CWL
t
ASC
t
CAH
t
CAS
t
AR
t
CP
t
RAH
t
RCS
t
CWL
t
OEH
t
WP
t
DS
t
DH
t
DZC
t
ON
t
OED
t
OEH
t
ON
t
OED
t
DS
t
WP
t
RWL
t
DH
t
OEZ
t
OEZ
t
ON
t
DZO
t
ON
t
ASR
“H” or “ L”
Valid Data
t
CPR
ROW
ADD
COL
ADD
COL
ADD
VALID
VALID
WE
V
IH
V
IL
A
0
to A
10
V
IH
V
IL
DQ
(Output)
V
OH
V
OL
DQ
(Input)
V
IH
V
IL
OE
V
IH
V
IL
t
WCH
t
WCH
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