WS512K32-XXX
White Electronic Designs
AC CHARACTERISTICS
(VCC = 5ꢀ0V, VSS = 0V, TA = -55°C TO +125°C)
Parameter
Symbol
-15*
-17
-20
-25
-35
-45
-55
Units
Read Cycle
Min Max Min Max Min Max Min Max Min Max Min Max Min Max
Read Cycle Time
tRC
tAA
15
0
17
0
20
0
25
0
35
0
45
0
55
0
ns
ns
ns
ns
ns
ns
ns
Address Access Time
15
17
20
25
35
45
55
Output Hold from Address Change tOH
Chip Select Access Time
tACS
tOE
tCLZ1
15
8
17
9
20
10
25
12
35
25
45
25
55
25
Output Enable to Output Valid
Chip Select to Output in Low Z
2
0
2
0
2
0
2
0
2
2
4
0
4
0
4
0
Output Enable to Output in Low Z tOLZ1
Chip Disable to Output in High Z tCHZ1
Output Disable to Output in High Z tOHZ1
1
1
2
2
1
1
1
2
2
1
1
2
2
1
1
1
*15ns Access Time available only in Commercial and Industrial Temperatureꢀ This speed is not fully characterized and is subject to change
without noticeꢀ
1ꢀ This parameter is guaranteed by design but not testedꢀ
AC CHARACTERISTICS
(VCC = 5ꢀ0V, VSS = 0V, TA = -55°C TO +125°C)
Parameter
Symbol
-15*
-17
-20
-25
-35
-45
-55
Units
Write Cycle
Min Max Min Max Min Max Min Max Min Max Min Max Min Max
Write Cycle Time
tWC
tCW
tAW
tDW
tWP
tAS
1
1
1
1
1
5
3
3
0
3
1
1
1
1
1
7
5
5
1
5
20
1
25
35
45
55
Chip Select to End of Write
Address Valid to End of Write
Data Valid to End of Write
Write Pulse Width
5
5
1
1
7
7
25
25
1
1
2
1
3
2
1
5
1
7
25
ns
Address Setup Time
Address Hold Time
2
2
0
2
2
0
3
2
0
4
2
0
4
2
5
5
1
0
2
5
5
tAH
0
2
ns
ns
Output Active from End of Write tOW1
Write Enable to Output in High Z
Data Hold Time
tWHZ1
8
9
1
1
3
1
5
tDH
0
0
0
0
0
0
ns
*15ns Access Time available only in Commercial and Industrial Temperatureꢀ This speed is not fully characterized and is subject to change
without noticeꢀ
1ꢀ This parameter is guaranteed by design but not testedꢀ
2ꢀ The Address Setup Time of minimum 2ns is for the G2U, G1U and H1 packagesꢀ tAS minimum for the G4T package is 0nsꢀ
FIGꢀ 4 AC TEST CIRCUIT
AC TEST CONDITIONS
Parameter
Typ
Unit
V
Input Pulse Levels
VIL = 0, VIH = 3ꢀ0
Input Rise and Fall
5
ns
V
Input and Output Reference Level
Output Timing Reference Level
1ꢀ5
1ꢀ5
V
Notes:
VZ is programmable from -2V to +7Vꢀ
IOL & IOH programmable from 0 to 16mAꢀ
Tester Impedance Z0 = 75 ýꢀ
VZ is typically the midpoint of VOH and VOLꢀ
IOL & IOH are adjusted to simulate a typical resistive load circuitꢀ
ATE tester includes jig capacitanceꢀ
White Electronic Designs Corporation Phoenix AZ (602) 437-1520
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