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參數(shù)資料
| 型號(hào)： | AS4C256K16FO |
| 廠商： | Alliance Semiconductor Corporation |
| 英文描述： | 5V 256K × 16 CMOS DRAM (Fast Page Mode)(5V 256K × 16 CMOS動(dòng)態(tài)RAM（快速頁面模式）) |
| 中文描述： | 5V的256K × 16的CMOS的DRAM（快速頁面模式）（5V的256K × 16的CMOS動(dòng)態(tài)隨機(jī)存儲(chǔ)器（快速頁面模式）） |
| 文件頁數(shù)： | 4/25頁 |
| 文件大小： | 521K |
| 代理商： | AS4C256K16FO |
AS4C256K16FO
2/1/01;
V.0.9
Alliance Semiconductor
P. 4 of 25
AC parameters common to all waveforms
(V
CC
= 5V ± 10%, GND = 0V, T
a
= 0
°
C to +70
°
C)
–30
–35
Read cycle
(V
CC
= 5V±10%, GND = 0V, T
a
= 0
°
C to + 70
°
C)
–30
–35
Standard
Symbol
Parameter
–25
–50
Unit
Notes
Min
Max
Min
Max
Min
Max
Min
Max
t
RC
t
RP
t
RAS
t
CAS
t
RCD
t
RAD
t
RSH(R)
t
CSH
t
CRP
t
ASR
t
RAH
t
T
t
REF
t
CLZ
Random read or write cycle time
45
–
65
–
70
–
85
–
ns
RAS precharge time
15
–
25
–
25
–
25
–
ns
RAS pulse width
25
75K
30
75K
35
75K
50
75K
ns
CAS pulse width
4
–
5
–
6
–
10
–
ns
RAS to CAS delay time
10
17
15
20
16
24
15
35
ns
6
RAS to column address delay time
8
13
10
14
11
17
15
25
ns
7
CAS to RAS hold time (read cycle)
7
–
10
–
10
–
10
–
ns
RAS to CAS hold time
20
–
30
–
35
–
50
–
ns
CAS to RAS precharge time
5
–
5
–
5
–
5
–
ns
Row address setup time
0
–
0
–
0
–
0
–
ns
Row address hold time
5
–
5
–
6
–
9
–
ns
Transition time (rise and fall)
1.5
50
1.5
50
1.5
50
3
50
ns
4,5
Refresh period
–
8
–
8
–
8
–
8
ms
3
CAS to output in low Z
0
–
0
–
0
–
3
–
ns
8
Standard
Symbol
Parameter
–25
–50
Unit
Notes
Min
Max
Min
Max
Min
Max
Min
Max
t
RAC
t
CAC
t
AA
t
AR(R)
t
RCS
t
RCH
t
RRH
t
RAL
t
CPN
t
OFF
Access time from RAS
–
25
–
30
–
35
–
50
ns
6
Access time from CAS
–
7
–
10
–
10
–
10
ns
6,13
Access time from address
–
12
–
16
–
18
–
25
ns
7,13
Column add hold from RAS
19
–
26
–
28
–
30
–
ns
Read command setup time
0
–
0
–
0
–
0
–
ns
Read command hold time to CAS
0
–
0
–
0
–
0
–
ns
9
Read command hold time to RAS
0
–
0
–
0
–
0
–
ns
9
Column address to RAS Lead time
12
–
16
–
18
–
25
–
ns
CAS precharge time
4
–
3
–
4
–
5
–
ns
Output buffer turn-off time
0
6
0
8
0
8
0
8
ns
8,10
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AS4C256K16FO50JC | 制造商: 功能描述: 制造商:undefined 功能描述: |
| AS4C256K16FO-50JC | 制造商:Alliance Memory Inc 功能描述: |
| AS4C256K16FO-50JI | 制造商:ALSC 制造商全稱:Alliance Semiconductor Corporation 功能描述:5V 256K X 16 CMOS DRAM (Fast Page Mode) |
| AS4C256K16FO-50TC | 制造商:ALSC 制造商全稱:Alliance Semiconductor Corporation 功能描述:5V 256K X 16 CMOS DRAM (Fast Page Mode) |
| AS4C256K16FO-50TI | 制造商:ALSC 制造商全稱:Alliance Semiconductor Corporation 功能描述:5V 256K X 16 CMOS DRAM (Fast Page Mode) |
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