參數(shù)資料
型號(hào): KM4216C258
廠商: SAMSUNG SEMICONDUCTOR CO. LTD.
英文描述: 256K x 16 Bit CMOS Video RAM(256K x 16 位 CMOS視頻RAM)
中文描述: 256K × 16位的CMOS視頻RAM(256K × 16位的CMOS視頻內(nèi)存)
文件頁數(shù): 36/41頁
文件大?。?/td> 772K
代理商: KM4216C258
KM4216C258
CMOS VIDEO RAM
Rev. 0.1 (Mar. 1998)
CAS-BEFORE-RAS REFRESH COUNTER TEST CYCLE
Don
t care
t
RAS
t
RP
t
RSH
t
CHR
t
CSR
t
RAL
t
CAH
t
ASC
Column Address
t
RFH
t
FSR
t
RCS
t
CAC
t
AA
t
RCH
t
RRH
t
ROH
t
OEA
Valid Data Out
t
OFF
t
OEZ
Valid Data In
t
CLZ
t
RWL
t
CWL
t
WCH
t
WCS
t
RWH
t
WSR
t
RWH
t
WSR
Valid Data Out
Valid Data In
t
AWD
t
RCS
t
CWD
t
CWL
t
RWL
t
WP
t
CAC
t
OEA
t
AA
t
OED
t
OEZ
t
DS
t
CAC
t
CLZ
t
DH
RAS
V
IH
-
V
IL
-
CAS
V
IH
-
V
IL
-
V
IH
-
V
IL
-
A
0
~A
8
V
IH
-
V
IL
-
V
IH
-
V
IL
-
DT/OE
V
OH
-
V
OL
-
DSF
V
IH
-
V
IL
-
READ CYCLE
W
0
/DQ
0
~W
7
/DQ
7
V
IH
-
V
IL
-
V
IH
-
V
IL
-
DT/OE
V
IH
-
V
IL
-
W
0
/DQ
0
~W
7
/DQ
7
V
IH
-
V
IL
-
V
IH
-
V
IL
-
DT/OE
V
OH
-
V
OL
-
V
IH
-
V
IL
-
WRITE CYCLE
t
CPT
t
DS
t
DH
W
0
/DQ
0
~
W
15
/DQ
15
WB/WE
WB/WE
WB/WE
t
CAS
READ MODIFY WRITE CYCLE
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