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參數資料
| 型號： | W24257AS-20 |
| 廠商： | WINBOND ELECTRONICS CORP |
| 元件分類： | SRAM |
| 英文描述： | 32K X 8 High Speed CMOS Static RAM |
| 中文描述： | 32K X 8 STANDARD SRAM, 20 ns, PDSO28 |
| 封裝： | 0.330 INCH, SOP-28 |
| 文件頁數： | 5/11頁 |
| 文件大小： | 226K |
| 代理商： | W24257AS-20 |
W24257A
Publication Release Date: May 1997
- 5 -
Revision A14
AC CHARACTERISTICS
(V
DD
= 5V
±
10%, V
SS
= 0V, T
A
= 0 to 70
°
C)
Read Cycle
PARAMETER
SYM.
W24257A-10
W24257A-12
W24257A-15
W24257A-20
UNIT
MIN.
MAX.
MIN.
MAX.
MIN.
MAX.
MIN.
MAX.
Read Cycle Time
T
RC
10
-
12
-
15
-
20
-
nS
Address Access Time
T
AA
-
10
-
12
-
15
-
20
nS
Chip Select Access Time
T
ACS
-
10
-
12
-
15
-
20
nS
Output Enable to Output Valid
T
AOE
-
5
-
6
-
7
-
10
nS
Chip Selection to Output in Low Z
T
CLZ
3
-
3
-
3
-
3
-
nS
Output Enable to Output in Low Z
T
OLZ
0
-
0
-
0
-
0
-
nS
Chip Deselection to Output in High Z
T
CHZ
-
5
-
6
-
7
-
10
nS
Output Disable to Output in High Z
T
OHZ
-
5
-
6
-
7
-
10
nS
Output Hold from Address Change
T
OH
3
-
3
-
3
-
3
-
nS
These parameters are sampled but not 100% tested.
Write Cycle
PARAMETER
SYM.
W24257A-10
W24257A-12
W24257A-15
W24257A-20
UNIT
MIN.
MAX.
MIN.
MAX.
MIN.
MAX.
MIN.
MAX.
Write Cycle Time
T
WC
10
-
12
-
15
-
20
-
nS
Chip Selection to End of Write
T
CW
9
-
10
-
13
-
17
-
nS
Address Valid to End of Write
T
AW
9
-
10
-
13
-
17
-
nS
Address Setup Time
T
AS
0
-
0
-
0
-
0
-
nS
Write Pulse Width
T
WP
9
-
10
-
10
-
12
-
nS
Write Recovery Time
CS , WE
T
WR
0
-
0
-
0
-
0
-
nS
Data Valid to End of Write
T
DW
6
-
7
-
9
-
10
-
nS
Data Hold from End of Write
T
DH
0
-
0
-
0
-
0
-
nS
Write to Output in High Z
T
WHZ
-
6
-
7
-
8
-
10
nS
Output Disable to Output in High Z
T
OHZ
-
6
-
7
-
8
-
10
nS
Output Active from End of Write
T
OW
0
-
0
-
0
-
0
-
nS
These parameters are sampled but not 100% tested.
相關PDF資料 |
PDF描述 |
|---|---|
| W24257 | 32K X 8 High Speed CMOS Static RAM |
| W24257A | 32K X 8 High Speed CMOS Static RAM |
| W24257AJ-12 | 32K X 8 High Speed CMOS Static RAM |
| W24257C | 32K×8bit CMOS Static RAM(32K×8位CMOS靜態RAM) |
| W24258C | 32K×8bit CMOS Static RAM(32K×8位CMOS靜態RAM) |
相關代理商/技術參數 |
參數描述 |
|---|---|
| W24257AS-35 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:x8 SRAM |
| W24257K70LL | 制造商:WINBOND 功能描述:New |
| W24257Q-70L | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:x8 SRAM |
| W24257Q-70LE | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:x8 SRAM |
| W24257Q-70LL | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:x8 SRAM |
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