參數(shù)資料
型號: 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位動態(tài)隨機存儲器1個M字由16位,江戶,字節(jié)讀/寫模式
文件頁數(shù): 25/48頁
文件大?。?/td> 319K
代理商: UPD42S18165L
μ
PD42S18165L, 4218165L
25
Upper Byte Read Modify Write Cycle
V
IH
V
IL
RAS
V
IH
V
IL
UCAS
LCAS
V
IH
V
IL
Address
V
IH
V
IL
WE
V
IH
V
IL
U I/O
V
IH
V
IL
OE
U I/O
V
IH
V
IL
V
OH
V
OL
Row
Col.
t
RWC
t
RAS
t
RP
t
CSH
t
CRP
t
RCD
t
RSH
t
CAS
t
CPN
t
ASR
t
RAH
t
RAD
t
ASC
t
CAH
t
RWD
t
AWD
t
CWD
t
RCS
t
CWL
t
RWL
t
WP
t
OEH
t
OEA
Data in
Hi - Z
t
RAC
t
AA
t
CAC
t
OED
t
DS
t
DH
t
OEZ
Data out
Hi - Z
t
OLZ
t
CLZ
t
CRP
t
MRH
Remark
In this cycle, the input data to Lower I/O is ineffective. The data out of that remains Hi-Z.
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