參數(shù)資料
型號(hào): 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(jí)頁面存取模式動(dòng)態(tài)RAM)
中文描述: 的CMOS 256K × 16位的超頁模式動(dòng)態(tài)RAM的CMOS(256K × 16位超級(jí)頁面存取模式動(dòng)態(tài)內(nèi)存)
文件頁數(shù): 18/28頁
文件大?。?/td> 364K
代理商: MB814265-70
18
MB814265-60/MB814265-70
Fig. 11 – HYPER PAGE MODE READ CYCLE (WE = “H” or “L”)
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
DQ
(Input)
A
0
to A
8
V
OH
V
OL
DQ
(Output)
V
IH
V
IL
OE
DESCRIPTION
The hyper page mode of operation permits faster successive memory operations at multiple column locations of the same row
address. 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.
t
RASP
t
CRP
t
ASR
t
ASC
t
RCS
t
RHCP
“H” or ”L”
t
RP
ROW
ADD
COL
ADD
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
AA
COL
ADD
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
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
ON
t
WPZ
t
ON
t
WEZ
t
WPZ
t
CDD
t
WED
t
WEZ
t
ON
t
AR
t
ASC
t
RDD
HIGH-Z
HIGH-Z
t
RAD
COL
ADD
t
CAC
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