參數(shù)資料
型號(hào)： K4E661612D
廠商： SAMSUNG SEMICONDUCTOR CO. LTD.
英文描述： CMOS DRAM
中文描述： 的CMOS內(nèi)存
文件頁數(shù)： 6/36頁
文件大小： 397K
代理商： K4E661612D
CMOS DRAM
K4E661612D,K4E641612D
Industrial Temperature
AC CHARACTERISTICS
( C o n t i n u e d )
Parameter
Symbol
-45
-50
-60
Units
Note
Min
Max
Min
M a x
Min
Max
D a t a h o l d t i m e
t
D H
7
7
10
n s
9 , 1 9
R e f r e s h p e r i o d ( N o r m a l )
t
R E F
6 4
64
6 4
m s
R e f r e s h p e r i o d ( L - v e r )
t
R E F
1 2 8
1 2 8
1 2 8
m s
W r i t e c o m m a n d s e t - u p t i m e
t
W C S
0
0
0
n s
7
C A S to W d e l a y t i m e
t
C W D
24
27
32
n s
7 , 1 5
R A S to W d e l a y t i m e
t
R W D
57
64
77
n s
7
C o l u m n a d d r e s s t o W d e l a y t i m e
t
A W D
35
39
47
n s
7
C A S set-up time ( C A S -before-R A S refresh)
t
C S R
5
5
5
n s
17
C A S hold time (C A S -before-R A S refresh)
t
CHR
10
10
10
n s
18
R A S to C A S p r e c h a r g e t i m e
t
R P C
5
5
5
n s
A c c e s s t i m e f r o m C A S p r e c h a r g e
t
C P A
2 4
28
3 5
n s
3
H y p e r P a g e c y c l e t i m e
t
H P C
17
20
25
n s
21
H y p e r P a g e r e a d - m o d i f y - w r i t e c y c l e t i m e
t
HPRWC
47
47
56
n s
21
C A S p r e c h a r g e t i m e ( H y p e r p a g e c y c l e )
t
C P
6.5
7
10
n s
14
R A S p u l s e w i d t h ( H y p e r p a g e c y c l e )
t
R A S P
45
2 0 0 K
50
2 0 0 K
60
2 0 0 K
n s
R A S h o l d t i m e f r o m C A S p r e c h a r g e
t
R H C P
24
30
35
n s
O E a c c e s s t i m e
t
O E A
1 2
13
1 5
n s
3
O E to data delay
t
OED
8
10
13
n s
C A S p r e c h a r g e t o W d e l a y t i m e
t
C P W D
36
41
52
n s
Output buffer turn off delay time from O E
t
O E Z
3
1 1
3
13
3
1 3
n s
6
O E c o m m a n d h o l d t i m e
t
OEH
5
5
5
n s
W r i t e c o m m a n d s e t - u p t i m e ( T e s t m o d e i n )
t
WTS
10
10
10
n s
11
W r i t e c o m m a n d h o l d t i m e ( T e s t m o d e i n )
t
WTH
10
10
10
n s
11
W to R A S p r e c h a r g e t i m e ( C - B - R r e f r e s h )
t
W R P
10
10
10
n s
W to R A S h o l d t i m e ( C - B - R r e f r e s h )
t
W R H
10
10
10
n s
O u t p u t d a t a h o l d t i m e
t
D O H
4
5
5
n s
Output buffer turn off delay from R A S
t
R E Z
3
1 3
3
13
3
1 3
n s
6 , 2 0
Output buffer turn off delay from W
t
W E Z
3
1 3
3
13
3
1 3
n s
6
W to data delay
t
W E D
8
15
15
n s
O E to C A S h o l d t i m e
t
O C H
5
5
5
n s
C A S hold time to O E
t
CHO
5
5
5
n s
O E p r e c h a r g e t i m e
t
O E P
5
5
5
n s
W p u l s e w i d t h ( H y p e r P a g e C y c l e )
t
W P E
5
5
5
n s
R A S p u l s e w i d t h ( C - B - R s e l f r e f r e s h )
t
R A S S
1 0 0
1 0 0
100
u s
2 2 , 2 3 , 2 4
R A S p r e c h a r g e t i m e ( C - B - R s e l f r e f r e s h )
t
R P S
74
90
110
n s
2 2 , 2 3 , 2 4
C A S hold time (C-B-R self refresh)
t
C H S
-50
-50
-50
n s
2 2 , 2 3 , 2 4
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