參數(shù)資料
型號(hào): MB81V4265S-70
廠商: Fujitsu Limited
英文描述: CMOS 256K ×16 BIT Hyper Page Mode Dynamic RAM(CMOS 256K ×16位超級(jí)頁(yè)面存取模式動(dòng)態(tài)RAM)
中文描述: 的CMOS 256K × 16位的超頁(yè)模式動(dòng)態(tài)RAM的CMOS(256K × 16位超級(jí)頁(yè)面存取模式動(dòng)態(tài)內(nèi)存)
文件頁(yè)數(shù): 18/29頁(yè)
文件大?。?/td> 377K
代理商: MB81V4265S-70
18
MB81V4265S-60/-70
COL
ADD
LCAS
or
UCAS
Fig. 11 – HYPER PAGE MODE READ CYCLE (WE = “H” or “L”)
V
IH
V
IL
RAS
V
IH
V
IL
V
IH
V
IL
V
IH
V
IL
V
IH
V
IL
A
0
to A
8
WE
DQ
(Input)
V
OH
V
OL
DQ
(Output)
DESCRIPTION
The hyper page mode of operation permits faster successive memory operations at multiple column locations of the same row ad-
dress.
This operation is performed by strobing in the row address and maintaining RAS at a Low level and WE at a High level during all
successive memory cycles in which the row address is latched. The access time is determined by t
CAC
, t
AA
, t
CPA
, or t
OEA
, whichever
one is the latest in occurring.
V
IH
V
IL
OE
t
RASP
t
CRP
t
ASR
t
ASC
t
RCS
t
RHCP
“H” or “L”
t
RP
t
CAS
t
RSH
t
HPC
t
CAS
t
CAS
t
DZC
t
CSH
t
CAH
t
RAH
t
CSH
t
ASC
t
RCH
Valid Data
t
CAC
t
AA
t
CSH
t
RAL
HIGH-Z
t
OFF
t
OH
t
OEZ
t
OED
During one cycle is achieved, the input/output timing apply the same manner as the former cycle.
t
OH
t
OH
t
AA
t
CAC
t
AA
t
OEA
t
DZO
t
ON
t
RAC
t
RCD
t
OFR
t
RCS
t
RCH
t
WPZ
t
RCS
t
RCH
t
CAL
t
WEZ
t
CAC
t
ON
t
WPZ
t
ON
t
WEZ
t
WPZ
t
CDD
t
WED
t
WEZ
t
ON
t
ASC
t
RDD
HIGH-Z
HIGH-Z
t
RAD
t
AR
ROW
ADD
COL
ADD
COL
ADD
相關(guān)PDF資料
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