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參數(shù)資料
| 型號： | MB81N643289 |
| 廠商： | Fujitsu Limited |
| 英文描述： | DRILL BIT HIGH SPEED STEEL .021,1 |
| 中文描述： | 8 × 256K × 32位的雙倍數(shù)據(jù)速率FCRAMTM |
| 文件頁數(shù)： | 34/64頁 |
| 文件大小： | 1732K |
| 代理商： | MB81N643289 |
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34
MB81N643289-50/-60
Preliminary (AE1E)
I
AC CHARACTERISTICS (continued)
MINIMUM LATENCY - FIXED VALUES
(The latency values on these parameters are fixed regardless of clock period.)
Parameter
RAS (ACT) to CAS (Read) Delay (minimum)
(Applicable to same bank)
RAS (ACT) to CAS (Write) Delay (minimum)
(Applicable to same bank)
Write Command to Read Command Delay Time
(Applicable to other bank in page open)
Read with Auto-close to Next Command Input
Delay (Applicable to same bank)
Write with Auto-close Command to Next Command
Input Delay (Applicable to same bank)
Read to Page Close Command Delay
(Applicable to same bank)
Write to Page Close Command Delay
(Applicable to same bank)
CAS to CAS Delay
(Applicable to same bank)
CAS to CAS Bank Delay
(Applicable to other bank)
Read Command to Write Command Lead Time
(Applicable to any bank in page open)
Write Command to Read Command Lead time
(Applicable to same bank)
Symbol
BL = 2
3
2
1
1
2
2
3
3
7
6
1
1
5
4
1
1
1
1
3
3
5
4
2
2
2
2
1
1
1
1
400
630
BL = 4
3
2
1
1
3
3
4
4
8
7
2
2
6
5
2
2
2
2
4
4
6
5
2
2
2
2
1
1
1
1
400
630
BL = 8
3
2
1
1
5
5
6
6
10
9
4
4
8
7
4
4
4
4
6
6
8
7
2
2
2
2
1
1
1
1
400
630
Unit
t
CK
t
CK
t
CK
t
CK
t
CK
t
CK
t
CK
t
CK
t
CK
t
CK
t
CK
t
CK
t
CK
t
CK
t
CK
t
CK
t
CK
t
CK
t
CK
t
CK
t
CK
t
CK
t
CK
t
CK
t
CK
t
CK
t
CK
t
CK
t
CK
t
CK
t
CK
t
CK
CL = 3
CL = 2
CL = 3
CL = 2
CL = 3
CL = 2
CL = 3
CL = 2
CL = 3
CL = 2
CL = 3
CL = 2
CL = 3
CL = 2
CL = 3
CL = 2
CL = 3
CL = 2
CL = 3
CL = 2
CL = 3
CL = 2
CL = 3
CL = 2
CL = 3
CL = 2
CL = 3
CL = 2
CL = 3
CL = 2
t
CK
< 7.5 ns
7.5 to t
CK(max)
l
RCD
l
RCDW
l
WRD
l
RDA
l
WAL
l
RPL
l
WPL
l
CCD
l
CBD
l
RWL
l
WRL
Mode Register Set Cycle Time
l
RSC
Power Down Exit to Next Command Input Delay
(Minimum)
Active Command to Next Active
(Applicable to other bank)
l
PDEX
l
RRD
PD Low to Command/Address Input Inactive
l
PD
Clock Lock-on Time *14
l
LOCK
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