參數(shù)資料
型號(hào): UPD42S18165L
廠商: NEC Corp.
英文描述: 3.3 V OPERATION 16 M-BIT DYNAMIC RAM 1 M-WORD BY 16-BIT, EDO, BYTE READ/WRITE MODE
中文描述: 3.3 V工作16 m位動(dòng)態(tài)隨機(jī)存儲(chǔ)器1個(gè)M字由16位,江戶,字節(jié)讀/寫模式
文件頁數(shù): 36/48頁
文件大小: 319K
代理商: UPD42S18165L
μ
PD42S18165L, 4218165L
36
Hyper Page Mode (EDO) Byte Read Modify Write Cycle
RAS
V
IH–
V
IL–
t
RASP
UCAS
V
IH–
V
IL–
L I/OV
OH–
V
OL–
t
RP
t
HPRWC
t
HCAS
t
RCD
t
CRP
t
CPN
t
HCAS
LCASV
IH–
V
IL–
t
CRP
t
MRH
t
CP
t
HCAS
t
CP
Address
V
IH–
V
IL–
OE
V
IH–
V
IL–
U I/O
V
IH–
V
IL–
in
t
DH
t
OLZ
t
CLZ
t
CAC
t
OEZ
Hi - Z
Hi - Z
out
t
DS
t
OLZ
t
OEH
t
OEH
t
CWD
t
WP
t
RWD
t
AWD
t
CPWD
t
AWD
t
CWD
t
RAC
t
AA
t
CAC
t
RCS
t
ACP
Row
Col.
Col.
Col.
t
CAH
t
CAH
t
ASC
t
RAH
t
ASR
t
RAD
WE
V
IH–
V
IL–
V
IH–
V
IL–
in
out
Hi - Z
Hi - Z
in
t
DH
t
DH
t
DS
t
DS
out
t
OEZ
t
OED
t
OED
t
CLZ
t
OEA
t
CAC
Hi - Z
t
OLZ
t
OEZ
t
OED
t
CLZ
t
OEA
t
OEA
t
AA
t
AA
t
RCS
t
WP
t
RCS
t
OEH
t
CWD
t
CWL
t
CPWD
t
AWD
t
ACP
t
CWL
t
RWL
t
WP
t
ASC
t
CAH
t
ASC
t
RAL
t
CWL
U I/OV
OH–
V
OL–
L I/O
Remarks 1.
In the hyper page mode (EDO), read, write and read modify write cycles are available for each of
the consecutive CAS cycles within the same RAS cycle.
2.
This cycle can be used to control either UCAS or LCAS only. Or, it can be used to control UCAS
or LCAS simultaneously, or at random.
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