參數(shù)資料
型號(hào): HM51S4265DTT-6
元件分類: DRAM
英文描述: 256K X 16 EDO DRAM, 60 ns, PDSO40
封裝: 0.400 INCH, PLASTIC, MO-133BA, TSOP2-44/40
文件頁數(shù): 33/33頁
文件大?。?/td> 331K
代理商: HM51S4265DTT-6
HM514265D Series, HM51S4265D Series
9
Read, Write, Read-Modify-Write and Refresh Cycles (Common parameters)
HM514265D, HM51S4265D
-5
-6/-6R
-7
-8
Parameter
Symbol
Min
Max
Min
Max
Min
Max
Min
Max
Unit
Notes
Random read or
write cycle time
t
RC
84
104
124
144
ns
RAS precharge time
t
RP
30
40
50
60
ns
RAS pulse width
t
RAS
50
10000
60
10000 70
10000
80
10000
ns
27
CAS pulse width
t
CAS
8
10000
10
10000 13
10000
15
10000
ns
28
Row address setup
time
t
ASR
0—
0—0—
0
ns
Row address hold time t
RAH
8
10
10
10
ns
Column address setup
time
t
ASC
0—
0—0—
0
ns
19
Column address
hold time
t
CAH
8
10
13
15
ns
19
RAS to CAS delay time t
RCD
18
35
20
45
20
50
20
60
ns
8
RAS to column
address delay time
t
RAD
10
25
15
30
15
35
15
40
ns
9
RAS hold time
t
RSH
13
15
18
20
ns
CAS hold time
t
CSH
40
48
58
68
ns
29
CAS to RAS precharge
time
t
CRP
10
10
10
10
ns
20
OE to Din delay time
t
ODD
13
15
18
20
ns
OE delay time from Din t
DZO
0—
0—0—
0
ns
CAS setup time
from Din
t
DZC
0—
0—0—
0
ns
Transition time
(rise and fall)
t
T
2
50
2
50
2
50
2
50
ns
7
Refresh period
t
REF
—8
8
ms
Refresh period
(L-version)
t
REF
128
128
128
128
ms
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