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(yè)數(shù): 34/41頁(yè)
文件大?。?/td> 772K
代理商: KM4216C258
KM4216C258
CMOS VIDEO RAM
Rev. 0.1 (Mar. 1998)
CAS-BEFORE-RAS REFRESH CYCLE
RAS
V
IH
-
V
IL
-
V
IH
-
V
IL
-
V
IH
-
V
IL
-
DT/OE
V
IH
-
V
IL
-
DSF
V
IH
-
V
IL
-
V
OH
-
V
OL
-
A
0
~A
8
V
IH
-
V
IL
-
t
RAS
t
RC
t
RP
OPEN
t
RP
t
RPC
t
CSR
t
CHR
t
ASR
t
RAH
t
WSR
t
RWH
t
FSR
t
RFH
t
OFF
Don
t care
C
A
B
CAS-before-RAS Refresh Cycle Function Table
FUNCTION
CODE
LOGIC STATES
A
B
C
CAS-before-RAS Refresh Cycle (Reset All Options)
CBRR
X
0
X
CAS-before-RAS Refresh Cycle (Stop Register Set)
CBRS
0
1
Stop Address
CAS-before-RAS Refresh Cycle (No Reset)
CBRN
1
1
X
W
0
/DQ
0
~
W
15
/DQ
15
WB/WE
CASL
CASU
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