EPA3571G Ver la hoja de datos (PDF) - PCA ELECTRONICS INC.
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EPA3571G Datasheet PDF : 14 Pages
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White Electronic Designs
WSF512K32-XXX
SRAM AC CHARACTERISTICS
VCC = 5.0V, -55°C ≤ TA ≤ +125°C
Parameter
Read Cycle
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
Symbol
tRC
tAA
tOH
tACS
tOE
tCLZ1
tOLZ1
tCHZ1
tOHZ1
-25
Min Max
25
25
0
25
15
3
0
12
12
1. This parameter is guaranteed by design but not tested.
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
SRAM AC CHARACTERISTICS
VCC = 5.0V, -55°C ≤ TA ≤ +125°C
Parameter
Write Cycle
Symbol
-25
Min Max
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 from Write Time
tWC
25
tCW
20
tAW
20
tDW
15
tWP
20
tAS
3
tAH
0
tOW1
3
tWHZ1
15
tDH
0
1. This parameter is guaranteed by design but not tested.
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Current Source
D.U.T.
Ceff = 50 pf
Current Source
FIGURE 3 AC TEST CIRCUIT
I OL
VZ ≈ 1.5V
(Bipolar Supply)
I OH
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.
May 2006
Rev. 9
4
White Electronic Designs Corporation • (602) 437-1520 • www.wedc.com
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