參數(shù)資料
型號: MB8117805B-50
廠商: Fujitsu Limited
英文描述: CMOS 2M ×8 BIT Hyper Page Mode Dynamic RAM(CMOS 2M ×8 位超級頁面存取模式動態(tài)RAM)
中文描述: 的CMOS 200萬× 8位超頁模式動態(tài)RAM的CMOS(200萬× 8位超級頁面存取模式動態(tài)內(nèi)存)
文件頁數(shù): 14/29頁
文件大?。?/td> 574K
代理商: MB8117805B-50
14
MB8117805B-50/-60
CAS
DESCRIPTION
A write cycle is similar to a read cycle except WE is set to a Low state and OE is a “H” or “L” signal. A write cycle can be
implemented in either of three ways – early write, delayed write, or read-modify-write. During all write cycles, timing
parameters t
RWL
, t
CWL
, t
RAL
and t
CAL
must be satisfied. In the early write cycle shown above t
WCS
satisfied, data on the DQ
pins are latched with the falling edge of CAS and written into memory.
Fig. 6 – EARLY WRITE CYCLE
RAS
A
0
to A
10
WE
DQ
(Input)
V
IH
V
IL
V
IH
V
IL
V
IH
V
IL
V
IH
V
IL
V
IH
V
IL
V
OH
V
OL
DQ
(Output)
t
RC
t
RAS
t
RP
t
CSH
t
RCD
t
CRP
t
CAS
t
ASR
t
RAH
t
ASC
t
CAH
t
WCR
t
WCS
t
WCH
t
DH
t
DS
t
RSH
t
AR
t
DHR
HIGH-Z
ROW ADD
COLUMN ADD
VALID DATA IN
“H” or “L” level (excluding Address and DQ)
“H” or “L” level, “H”
“L” or “L”
“H” transition
(Address and DQ)
相關PDF資料
PDF描述
MB8117805B-60 CMOS 2M ×8 BIT Hyper Page Mode Dynamic RAM(CMOS 2M ×8 位超級頁面存取模式動態(tài)RAM)
MB8118160A-60 CMOS 1M×16 BIT Fast Page Mode Dynamic RAM(CMOS 1M×16 位快速頁面存取模式動態(tài)RAM)
MB8118160A-70 CMOS 1M×16 BIT Fast Page Mode Dynamic RAM(CMOS 1M×16 位快速頁面存取模式動態(tài)RAM)
MB8118165B-50 CMOS 1M ×16 BIT Hyper Page Mode Dynamic RAM(CMOS 1M ×16 位超級頁面存取模式動態(tài)RAM)
MB8118165B-60 CMOS 1M ×16 BIT Hyper Page Mode Dynamic RAM(CMOS 1M ×16 位超級頁面存取模式動態(tài)RAM)
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