WSF2816-39H1MA Просмотр технического описания (PDF) - White Electronic Designs => Micro Semi
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WSF2816-39H1MA Datasheet PDF : 15 Pages
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WSF2816-39XX
SRAM AC CHARACTERISTICS
(VCC = 5.0V, TA = -55°C to +125°C)
Parameter
Read Cycle
Symbol
-35
Unit
Min
Max
Read Cycle Time
tRC
35
ns
Address Access Time
tAA
35
ns
Output Hold from Address Change
tOH
0
ns
Chip Select Access Time
tACS
35
ns
Output Enable to Output Valid
tOE
20
ns
Chip Select to Output in Low Z
tCLZ1
3
ns
Output Enable to Output in Low Z
tOLZ1
0
ns
Chip Disable to Output in High Z
tCHZ1
20
ns
Output Disable to Output in High Z
tOHZ1
20
ns
1. This parameter is guaranteed by design but not tested.
SRAM AC CHARACTERISTICS
(VCC = 5.0V, TA = -55°C to +125°C)
Parameter
Write Cycle
Symbol
-35
Unit
Min Max
Write Cycle Time
tWC
35
ns
Chip Select to End of Write
tCW
25
ns
Address Valid to End of Write
tAW
25
ns
Data Valid to End of Write
tDW
20
ns
Write Pulse Width
tWP
25
ns
Address Setup Time
tAS
0
ns
Address Hold Time
tAH
0
ns
Output Active from End of Write
tOW1
4
ns
Write Enable to Output in High Z
tWHZ1
20
ns
Data Hold from Write Time
tDH
0
ns
1. This parameter is guaranteed by design but not tested.
FIG. 3
AC TEST CIRCUIT
I OL
Current Source
D.U.T.
Ceff = 50 pf
I OH
Current Source
VZ ≈ 1.5V
(Bipolar Supply)
AC TEST CONDITIONS
PARAMETER
TYP UNIT
Input Pulse Levels
Input Rise and Fall
VIL = 0, VIH = 3.0 V
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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