參數(shù)資料
型號: HB52F168EN
廠商: Hitachi,Ltd.
英文描述: 64 MB Unbuffered SDRAM DIMM(64 MB 未緩沖同步DRAM DIMM)
中文描述: 64 MB的無緩沖SDRAM的內(nèi)存(64 MB的未緩沖同步的DRAM內(nèi)存)
文件頁數(shù): 67/71頁
文件大小: 906K
代理商: HB52F168EN
HB52F88EM-75F, HB52F89EM-75F, HB52F168EN-75F, HB52F169EN-
67
Self Refresh Cycle
Clock Suspend Mode
$
High-Z
%
-
.
6
CK
CKE
S
CE
W
BA
Address
DQMB
Din
Dout
$
,
1
2
4
5
:
;
=
>
B
C
F
J
K
.
6
7
@
H
.
7
8
@
H
)
W
2
:
;
:
B
C
L
:
B
C
J
K
H
P
'
(
5
=
>
$
,
5
Precharge command
If needed
Self refresh entry
command
Auto
refresh
Self refresh exit
ignore command
or No operation
F
Bank0
Read
Active
suspend start
suspend end
CKE
G
Bank0
Active clock
Active clock
O
P
'
A
(
J
0
K
1
7
@
H
I
(
N
end
Active
start
O
H
P
N
O
CKE Low
A10=1
RC
t
RP
t
#
,
#$
S
,
4
5
=
>
E
F
M
N
#$
RE
CE
W
,
4
5
<
=
E
F
M
N
Self refresh cycle
RE
,
CE
delay = 3
CE
latency = 3
Burst length = 4
= V or V
IL
Next
5
>
F
G
N
O
5
=
>
F
N
O
4
5
=
>
E
F
N
RC
t
Next
l
SREX
Self refresh entry
1
9
:
B
C
(
(
)
!
(
)
!
(
)
2
(
F
N
O
'
Dout
Din
'
0
4
5
=
F
5
=
>
F
G
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
!
'
/
0
&
/
,
5
>
+
,
4
<
=
5
>
R:a
C:a
R:b
a
a+1 a+2
a+3
b
b+1 b+2
,
4
5
&
'
/
!
R:a
C:a R:b
C:b
a
a+1 a+2
b
b+1 b+2 b+3
'
/
0
9
,
4
5
>
&
'
/
C:b
Bank0
Active
Active clock
suspend start
Active clock
supend end
Bank3
Active
Read suspend
Bank0
Precharge
Bank3
Read
Precharge
Bank0
Write
Bank3
Write suspend
start
Write suspend
end
Bank3
Write
Bank0
Precharge
Earliest Bank3
Precharge
b+3
5
=
>
F
4
5
=
>
F
'
'
(
0
E
N
O
E
M
N
<
E
M
N
<
D
E
M
N
A
I
J
8
@
A
H
I
8
@
A
I
J
A
J
K
(
1
2
9
:
B
K
(
0
1
9
:
B
'
(
0
8
9
8
A
I
J
(
0
1
8
9
B
'
(
/
0
8
&
'
/
CKE
RE
S
CE
Address
DQMB
CK
BA
Address
DQMB
a+3
High-Z
High-Z
$
,-
5
-
6
G
2
;
<
C
D
L
8
9
A
B
I
J
&
'
'
(
t
CES
t
CEH
t
CES
Read cycle
RE
,
CE
delay = 2
CE
latency = 3
Burst length = 4
= V or V
IH
IL
Write cycle
RE
,
CE
delay = 2
CE
latency = 3
Burst length = 4
= V or V
IH
IL
Dout
Din
Read suspend
Earliest Bank3
相關PDF資料
PDF描述
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