WMS128K8-85 Ver la hoja de datos (PDF) - White Electronic Designs => Micro Semi
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WMS128K8-85 Datasheet PDF : 8 Pages
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WMS128K8-XXX
AC CHARACTERISTICS
(VCC = 5.0V, TA = -55°C To +125°C)
Parameter
Symbol
-70
-85
Read Cycle
Min
Max
Min
Max
Read Cycle Time
tRC
70
85
Address Access Time
tAA
70
85
Output Hold from Address Change
tOH
3
3
Chip Select Access Time
tACS
70
85
Output Enable to Output Valid
tOE
35
45
Chip Select to Output in Low Z
tCLZ1
5
5
Output Enable to Output in Low Z
tOLZ1
5
5
Chip Disable to Output in High Z
tCHZ1
25
25
Output Disable to Output in High Z
tOHZ1
25
25
1. This parameter is guaranteed by design but not tested.
AC CHARACTERISTICS
(VCC = 5.0V, TA = -55°C To +125°C)
Parameter
Symbol
-70
Write Cycle
Min
Max
Write Cycle Time
tWC
70
Chip Select to End of Write
tCW
60
Address Valid to End of Write
tAW
60
Data Valid to End of Write
tDW
30
Write Pulse Width
tWP
50
Address Setup Time
tAS
0
Address Hold Time
tAH
5
Output Active from End of Write
tOW1
5
Write Enable to Output in High Z
tWHZ1
25
Data Hold Time
tDH
0
1. This parameter is guaranteed by design but not tested.
-85
Min
Max
85
75
75
35
55
0
5
5
30
0
-100
Min
Max
100
100
3
100
50
5
5
35
35
-100
Min
Max
100
80
80
40
70
0
5
5
35
0
-120
Min
Max
120
120
3
120
60
5
5
35
35
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
-120
Min
Max
120
100
100
50
80
0
5
5
35
0
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
AC TEST CIRCUIT
I OL
Current Source
D.U.T.
Ceff = 50 pf
I OH
Current Source
VZ ≈ 1.5V
(Bipolar Supply)
3
AC TEST CONDITIONS
Parameter
Typ
Unit
Input Pulse Levels
VIL = 0, VIH = 3.0 V
Input Rise and Fall
5
ns
Input and Output Reference Level
1.5
V
Output Timing Reference Level
1.5
V
NOTES:
VZ is programmable from -2V to +7V.
IOL & IOH programmable from 0 to 16mA.
Tester Impedance Z0 = 75 Ω.
VZ is typically the midpoint of VOH and VOL.
IOL & IOH are adjusted to simulate a typical resistive load circuit.
ATE tester includes jig capacitance.
White Electronic Designs Corporation • (602) 437-1520 • www.whiteedc.com
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