參數(shù)資料
型號: MB81V17805A-60L
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): 25/30頁
文件大?。?/td> 604K
代理商: MB81V17805A-60L
25
MB81V17805A-60/-60L/-70/-70L
t
RC
t
RP
t
CHR
t
RC
t
RAS
t
RAS
t
RP
t
OEL
t
RSH
t
RAH
t
ASC
t
AR
t
CAH
t
RCS
t
RRH
t
CAC
t
DZC
t
CDD
t
DZO
t
OEA
t
OED
t
OEZ
t
CRP
t
ASR
t
OH
t
OFF
t
ON
t
RCD
t
RAL
t
AA
t
RAC
t
OFR
t
OH
t
RAD
Fig. 18 – HIDDEN REFRESH CYCLE
ROW
ADDRESS
DESCRIPTION
A hidden refresh cycle may be performed while maintaining the latest valid data at the output by extending the active time of CAS
and cycling RAS. The refresh row address is provided by the on-chip refresh address counter. This eliminates the need for the external
row address that is required by DRAMs that do not have CAS-before-RAS refresh capability.
HIGH-Z
COLUMN
ADDRESS
VALID DATA OUT
RAS
V
IH
V
IL
V
IH
V
IL
V
IH
V
IL
V
IH
V
IL
V
OH
V
OL
CAS
WE
DQ
(Output)
A
0
to A
10
V
IH
V
IL
DQ
(Input)
V
IH
V
IL
OE
HIGH-Z
“H” or “L” level (excluding Address and DQ)
“H” or “L” level, “H”
“L” or “L”
“H” transition (Address and DQ)
相關(guān)PDF資料
PDF描述
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MB81V17805B-60 2M ×8 BIT Hyper Page Mode Dynamic RAM(CMOS 2M ×8位超級頁面存取模式動態(tài)RAM)
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