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參數(shù)資料
| 型號(hào)： | WMS128K8L-15FME |
| 英文描述： | x8 SRAM |
| 中文描述： | x8的SRAM |
| 文件頁(yè)數(shù)： | 3/10頁(yè) |
| 文件大小： | 206K |
| 代理商： | WMS128K8L-15FME |
3
White Electronic Designs Corporation (602) 437-1520 www.whiteedc.com
WMS128K8-XXX
AC CHARACTERISTICS
(V
CC
= 5.0V, GND = 0V, T
A
= -55
°
C to +125
°
C)
I
Current Source
D.U.T.
C = 50 pf
I
OL
V
≈
1.5V
(Bipolar Supply)
Z
Current Source
OH
NOTES:
V
Z
is programmable from -2V to +7V.
I
OL
& I
OH
programmable from 0 to 16mA.
Tester Impedance Z
0
= 75
.
V
Z
is typically the midpoint of V
OH
and V
OL
.
I
OL
& I
OH
are adjusted to simulate a typical resistive load circuit.
ATE tester includes jig capacitance.
AC TEST CIRCUIT
AC TEST CONDITIONS
Parameter
Input Pulse Levels
Input Rise and Fall
Input and Output Reference Level
Output Timing Reference Level
Typ
Unit
V
ns
V
V
V
IL
= 0, V
IH
= 3.0
5
1.5
1.5
Parameter
Symbol
-15
-17
-20
-25
-35
-45
-55
Units
Read Cycle
Min
Max
Min
Max
Min
Max
Min
Max
Min
Max
Min
Max
Min
Max
Read Cycle Time
Address Access Time
Output Hold from Address Change
Chip Select Access Time
Output Enable to Output Valid
Chip Select to Output in Low Z
Output Enable to Output in Low Z
Chip Disable to Output in High Z
Output Disable to Output in High Z
1. This parameter is guaranteed by design but not tested.
t
RC
t
AA
t
OH
t
ACS
t
OE
t
CLZ
1
t
OLZ
1
t
CHZ
1
t
OHZ
1
15
17
20
25
35
45
55
ns
ns
ns
ns
ns
ns
ns
ns
ns
15
17
20
25
35
45
55
0
0
0
0
0
0
0
15
10
17
10
20
12
25
15
35
20
45
25
55
30
3
0
3
0
3
0
3
0
3
0
3
0
3
0
10
10
10
10
10
10
12
12
20
20
20
20
20
20
AC CHARACTERISTICS
(V
CC
= 5.0V, GND = 0V, T
A
= -55
°
C to +125
°
C)
Parameter
Write Cycle
Write Cycle Time
Chip Select to End of Write
Address Valid to End of Write
Data Valid to End of Write
Write Pulse Width
Address Setup Time
Address Hold Time
Output Active from End of Write
Write Enable to Output in High Z
Data Hold Time
1. This parameter is guaranteed by design but not tested.
Symbol
-15
-17
-20
-25
-35
-45
-55
Units
Min
15
14
14
10
14
0
0
3
Max
Min
17
14
15
10
14
0
0
3
Max
Min
20
15
15
12
15
0
0
3
Max
Min
25
20
20
15
20
0
0
3
Max
Min
35
25
25
20
25
0
0
4
Max
Min
45
30
30
25
30
0
0
4
Max
Min
55
45
45
25
45
0
0
4
Max
t
WC
t
CW
t
AW
t
DW
t
WP
t
AS
t
AH
t
OW
1
t
WHZ
1
t
DH
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
10
10
12
15
20
25
25
0
0
0
0
0
0
0
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