WMS256K16-XXX
AC CHARACTERISTICS
VCC = 5.0V, GND = 0V, -55°C ≤ TA ≤ +125°C
Parameter
-17
-20
-25
-35
Symbol
Units
Min
Max
Min
Max
Min
Max
Min
Max
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
LB#, UB# Access Time
LB#, UB# Enable to Low Z Output
LB#, UB# Disable to High Z Output
1. This parameter is guaranteed by design but not tested.
tRC
tAA
17
20
25
35
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
17
20
25
35
tOH
tACS
tOE
0
0
0
0
17
10
20
12
25
15
35
20
1
tCLZ
2
0
5
0
5
0
5
0
1
tOLZ
tCHZ
tOHZ
1
9
9
10
10
10
12
12
12
14
15
15
17
1
tBA
tBLZ
1
0
0
0
0
1
tBHZ
9
10
12
15
AC CHARACTERISTICS
VCC = 5.0V, GND = 0V, -55°C ≤ TA ≤ +125°C
Parameter
-17
-20
-25
-35
Symbol
Units
Min
17
14
14
10
14
0
Max
Min
20
17
17
12
17
0
Max
Min
25
20
20
15
20
0
Max
Min
35
25
25
20
25
0
Max
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
tWC
tCW
tAW
tDW
tWP
tAS
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Address Setup Time
Address Hold Time
tAH
2
0
2
0
2
0
2
0
1
Output Active from End of Write
Write Enable to Output in High Z
Data Hold Time
LB#, UB# Valid to End of Write
1. This parameter is guaranteed by design but not tested.
tOW
1
tWHZ
9
10
10
15
tDH
tBW
0
14
0
17
0
20
0
25
AC TEST CIRCUIT
AC TEST CONDITIONS
Parameter
Typ
Unit
V
Input Pulse Levels
V
IL = 0, VIH = 3.0
Input Rise and Fall
5
ns
V
IOL
Input and Output Reference Level
Output Timing Reference Level
1.5
1.5
Current Source
V
NOTES:
Vz is programmable from -2V to +7V.
IOL & IOH programmable from 0 to 16mA.
Tester Impedance Z0 = 75 Ω.
VZ » 1.5V
(Bipolar Supply)
D.U.T.
Ceff = 50 pf
Vz is typically the midpoint of VOH and VOL
OL & IOH are adjusted to simulate a typical resistive load circuit.
ATE tester includes jig capacitance.
.
I
IOH
Current Source
Microsemi Corporation reserves the right to change products or specifications without notice.
May 2013 © 2013 Microsemi Corporation. All rights reserved.
Rev. 8
3
Microsemi Corporation • (602) 437-1520 • www.microsemi.com