WMS512K8-XXX
White Electronic Designs
AC Characteristics
(VCC = 5.0V, GND = 0V, -55°C ≤ TA < 125°C)
-15
-17
-20
-25
-35
-45
-55
Parameter
Symbol
Unit
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
15
0
17
0
20
0
25
0
35
0
45
0
55
0
ns
ns
ns
ns
ns
ns
ns
ns
ns
tRC
tAA
15
17
20
25
35
45
55
tOH
15
8
17
9
20
10
25
12
35
25
45
25
55
25
tACS
tOE
2
0
2
0
2
0
2
0
4
0
4
0
4
0
tCLZ1
tOLZ1
tCHZ1
tOHZ1
8
8
9
9
10
10
12
12
15
15
20
20
20
20
AC Characteristics
(VCC = 5.0V, GND = 0V, -55°C ≤ TA ≤ 125°C)
-15
-17
-20
-25
-35
-45
-55
Parameter
Symbol
Unit
Min Max Min Max Min Max Min Max Min Max Min Max Min Max
Write Cycle Time
15
13
13
8
13
2
17
14
14
9
14
2
20
14
14
10
14
2
25
15
15
10
15
2
35
25
25
20
25
2
45
35
35
25
35
2
55
50
50
25
40
2
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
tWC
tCW
tAW
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
tDW
tWP
tAS
0
2
0
2
0
3
0
4
0
4
5
5
5
5
tAH
tOW1
tWHZ1
tDH
8
9
9
10
15
20
25
0
0
0
0
0
0
0
1. This parameter is guaranteed by design but not tested.
AC TEST CIRCUIT
AC TEST CONDITIONS
Parameter
Typ
Unit
Input Pulse Levels
Input Rise and Fall
Input and Output Reference Level
Output Timing Reference Level
VIL = 0, VIH = 3.0
V
ns
V
IOL
5
1.5
1.5
Current Source
V
VZ ≈ 1.5V
(Bipolar Supply)
D.U.T.
Notes:
VZ is programmable from -2V to +7V.
Ceff = 50 pF
I
OL & 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.
IOH
ATE tester includes jig capacitance.
Current Source
White Electronic Designs Corp. reserves the right to change products or specifications without notice.
October 2004
Rev. 10
3
White Electronic Designs Corporation • (602) 437-1520 • www.wedc.com
WEDC [ WHITE ELECTRONIC DESIGNS CORPORATION ]
