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參數(shù)資料
| 型號： | MB81ES653225-12 |
| 廠商： | Fujitsu Limited |
| 英文描述： | Consumer/Embedded Application Specific Memory for SiP |
| 中文描述： | 消費/嵌入式SIP應用程序特定的內存 |
| 文件頁數(shù)： | 29/44頁 |
| 文件大?。?/td> | 485K |
| 代理商： | MB81ES653225-12 |
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MB81ES653225-12/-12L
29
■
AC CHARACTERISTICS
1.
BASIC AC CHARACTERISTICS
(At recommended operating conditions unless otherwise noted.) *
1,
*
2,
*
3
*1 : AC characteristics are measured after following the “22. POWER-UP INITIALIZATION” procedure in section
“
■
FUNCTIONAL DESCRIPTION”.
*2 : AC characteristics assume t
T
=
1 ns, 10 pF of capacitive load and 50
of terminated load.
Refer to “5. MEASUREMENT CONDITION OF THE AC CHARACTERISTICS”.
*3 : 0.9 V is the reference level for 1.8 V I/O for measuring timing of input/output signals. Transition times are
measured between V
IH
(Min) and V
IL
(Max) .
*4 : This value is for reference only.
*5 : If input signal transition time (t
T
) is longer than 1 ns; [ (t
T
/2)
0.5] ns should be added to t
AC
(Max) , t
HZ
(Max) ,
and t
CKSP
(Min) spec values, [ (t
T
/2)
0.5] ns should be subtracted from t
LZ
(Min) , t
HZ
(Min) , and t
OH
(Min) spec
values, and (t
T
1.0) ns should be added to t
CH
(Min) , t
CL
(Min) , t
SI
(Min) , and t
HI
(Min) spec values.
*6 : t
AC
also specifies the access time at burst mode.
*7 : t
AC
and t
OH
are measured under output load circuit shown in “5. MEASUREMENT CONDITION OF THE AC
CHARACTERISTICS”.
*8 : Specified where output buffer is no longer driven.
Parameter
Symbol
Value
Unit
Min
Max
12
Clock Period
CL
=
2
CL
=
3
t
CK2
18.5
ns
t
CK3
11.7
t
CK
×
0.3
t
CK
×
0.3
2.5
ns
Clock High Time
*
5
t
CH
ns
Clock Low Time
*
5
t
CL
ns
Input Setup Time
*
5
t
SI
ns
Input Hold Time
*
5
t
HI
1
0
ns
Access Time from Clock
(T
CK
=
Min) *
5,
*
6,
*
7
CL
=
2
CL
=
3
t
AC2
ns
t
AC3
8.7
ns
Output in Low-Z
*
5
t
LZ
ns
Output in High-Z *
5,
*
7,
*
8
CL
=
2
-12
t
HZ2
2
12
ns
-12L
1.5
CL
=
3
-12
t
HZ3
2
8.7
ns
-12L
1.5
Output Hold Time
*
4
-12
t
OH
2
ns
-12L
1.5
0.5
Time between Auto-Refresh command interval
t
REFI
3.9
μ
s
ms
Time between Refresh
t
REF
32
Transition Time
t
T
10
ns
CKE Setup Time for Power Down Exit Time
*
5
t
CKSP
2.5
ns
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