WSE128K16-35G2TC Просмотр технического описания (PDF) - White Electronic Designs Corporation
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WSE128K16-35G2TC Datasheet PDF : 15 Pages
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White Electronic Designs
WSE128K16-XXX
PRELIMINARY
SRAM AC CHARACTERISTICS
VCC = 5.0V, GND = 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
-35
Min
Max
35
35
0
35
20
3
0
20
20
-45
Min
Max
45
45
0
45
25
3
0
20
20
1. This parameter is guaranteed by design but not tested.
SRAM AC CHARACTERISTICS
VCC = 5.0V, GND = 0V, -55°C ≤ TA ≤ +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
Symbol
tWC
tCW
tAW
tDW
tWP
tAS
tAH
tOW1
tWHZ1
tDH
-35
Min
Max
35
25
25
20
25
0
0
4
20
0
-45
Min
Max
45
30
30
25
30
0
0
4
25
0
1. This parameter is guaranteed by design but not tested.
-70
Min
Max
70
70
5
70
35
5
5
25
25
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
-70
Min
Max
70
60
60
30
50
5
5
5
25
0
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
FIGURE 3 – AC TEST CIRCUIT
I OL
Current Source
D.U.T.
Ceff = 50 pf
VZ ≈ 1.5V
(Bipolar Supply)
I OH
Current Source
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 Corp. reserves the right to change products or specifications without notice.
March 2005
Rev. 3
4
White Electronic Designs Corporation • (602) 437-1520 • www.wedc.com
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