參數(shù)資料
型號(hào): MB81V4265-60
廠商: Fujitsu Limited
英文描述: CMOS 256K ×16BIT Hyper Page Mode Dynamic RAM(CMOS 256K ×16 位超級(jí)頁(yè)面存取模式動(dòng)態(tài)RAM)
中文描述: 256K × 16位的CMOS超頁(yè)模式動(dòng)態(tài)RAM的CMOS(256K × 16位超級(jí)頁(yè)面存取模式動(dòng)態(tài)內(nèi)存)
文件頁(yè)數(shù): 7/27頁(yè)
文件大?。?/td> 366K
代理商: MB81V4265-60
7
MB81V4265-60/-70
I
AC CHARACTERISTICS
(At recommended operating conditions unless otherwise noted.)
Notes 3, 4, 5
MB81V4265-70
Min.
119
158
5
5
0
(Continued)
No.
Parameter
Notes
Symbol
MB81V4265-60
Min.
104
138
5
5
0
Unit
Max.
8.2
60
20
30
15
Max.
8.2
70
20
35
15
1
2
3
4
5
6
7
8
9
10
Time Between Refresh
Random Read/Write Cycle Time
Read-Modify-Write Cycle Time
Access Time from RAS
Access Time from CAS
Column Address Access Time
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
CAS to RAS Precharge Time
RAS to CAS Delay Time
CAS Pulse Width
CAS Hold Time
CAS Precharge Time (Normal)
Row Address Set Up Time
Row Address Hold Time
Column Address Set Up Time
Column Address Hold Time
RAS to Column Address Delay
Time
Column Address to RAS Lead Time
Column Address to CAS Lead Time
Read Command and Set Up Time
Read Command Hold Time
Referenced to RAS
Read Command Hold Time
Referenced to CAS
Write Command Set Up Time
Write Command Hold Time
WE Pulse Width
Write Command to RAS Lead Time
t
REF
t
RC
t
RWC
t
RAC
t
CAC
t
AA
t
OH
t
OHC
t
ON
t
OFF
ms
ns
ns
ns
ns
ns
ns
ns
ns
ns
*6,9
*7,9
*8,9
*10
11
t
OFR
15
15
ns
12
t
WEZ
15
15
ns
13
14
15
16
17
18
19
20
21
22
23
24
25
t
T
t
RP
t
RAS
t
RSH
t
CRP
t
RCD
t
CAS
t
CSH
t
CPN
t
ASR
t
RAH
t
ASC
t
CAH
1
40
60
20
0
14
10
40
10
0
10
0
10
50
1
45
70
20
0
14
10
50
10
0
10
0
10
50
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
100000
40
100000
50
*21
*11,12, 22
*19
26
*13
t
RAD
12
30
12
35
ns
27
28
29
t
RAL
t
CAL
t
RCS
30
23
0
35
28
0
ns
ns
ns
30
*14
t
RRH
0
0
ns
31
*14
t
RCH
0
0
ns
32
33
34
35
*15
t
WCS
t
WCH
t
WP
t
RWL
0
10
10
15
0
10
10
20
ns
ns
ns
ns
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