參數(shù)資料
型號(hào): MB8117805A-70
廠商: Fujitsu Limited
英文描述: CMOS 2M ×8 BIT Hyper Page Mode Dynamic RAM(CMOS 2M ×8 位超級(jí)頁面存取模式動(dòng)態(tài)RAM)
中文描述: 的CMOS 200萬× 8位超頁模式動(dòng)態(tài)RAM的CMOS(200萬× 8位超級(jí)頁面存取模式動(dòng)態(tài)內(nèi)存)
文件頁數(shù): 8/30頁
文件大?。?/td> 569K
代理商: MB8117805A-70
8
MB8117805A-60/MB8117805A-70
I
AC CHARACTERISTICS
(At recommended operating conditions unless otherwise noted.)
Notes 3, 4, 5
MB8117805A-70
Min.
124
162
(Continued)
No.
Parameter
Notes
Symbol
MB8117805A-60
Min.
104
138
Unit
Max.
32.8
Max.
32.8
1
2
3
Time Between Refresh
Random Read/Write Cycle Time
Read-Modify-Write Cycle Time
t
REF
t
RC
t
RWC
ms
ns
ns
4
Access Time from RAS
t
RAC
60
70
ns
5
Access Time from CAS
t
CAC
15
17
ns
6
Column Address Access Time
t
AA
30
35
ns
7
8
9
Output Hold Time
Output Hold Time from CAS
Output Buffer Turn On Delay Time
Output Buffer Turn off Delay
Time
Output Buffer Turn Off Delay
Time from RAS
Output Buffer Turn Off Delay
Time from WE
Transition Time
RAS Precharge Time
RAS Pulse Width
RAS Hold Time
t
OH
t
OHC
t
ON
3
5
0
3
5
0
ns
ns
ns
10
t
OFF
15
17
ns
11
t
OFR
15
17
ns
12
t
WEZ
15
17
ns
13
14
15
16
t
T
t
RP
t
RAS
t
RSH
1
40
60
15
50
1
50
70
17
50
ns
ns
ns
ns
100000
100000
17
CAS to RAS Precharge Time
t
CRP
5
5
ns
18
RAS to CAS Delay Time
t
RCD
14
45
14
53
ns
19
20
CAS Pulse Width
CAS Hold Time
t
CAS
t
CSH
10
40
13
50
ns
ns
21
CAS Precharge Time (Normal)
t
CPN
10
10
ns
22
23
24
25
26
Row Address Set Up Time
Row Address Hold Time
Column Address Set Up Time
Column Address Hold Time
Column Address Hold Time from RAS
RAS to Column Address Delay
Time
Column Address to RAS Lead Time
Column Address to CAS Lead Time
Read Command and Set Up Time
t
ASR
t
RAH
t
ASC
t
CAH
t
AR
0
10
0
10
24
0
10
0
10
24
ns
ns
ns
ns
ns
27
t
RAD
12
30
12
35
ns
28
29
30
t
RAL
t
CAL
t
RCS
30
23
5
35
28
5
ns
ns
ns
6, 9
7, 9
8, 9
10
10
10
21
11, 12, 22
19
13
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