Write cycle (over the operating range)11
–55
Parameter
Symbol Min Max
Write cycle time
tWC
55
–
Chip enable to write end
tCW
40
–
Address setup to write end
tAW
40
–
Address setup time
tAS
0
–
Write pulse width
tWP
35
–
Address hold from end of write
tAH
0
–
Data valid to write end
tDW
25
–
Data hold time
tDH
0
–
Write enable to output in high Z tWZ
0
20
Output active from write end
tOW
5
–
UB/LB low to end of write
tBW
35
–
®
–70
Min Max Unit
70
–
ns
60
–
ns
60
–
ns
0
–
ns
55
–
ns
0
–
ns
30
–
ns
0
–
ns
0
20
ns
5
–
ns
55
–
ns
AS6UA25616
Notes
12
12
4, 5
4, 5
4, 5
Write waveform 1 (WE controlled)10,11
Address
CS
LB, UB
tAS
WE
tWC
tCW
tBW
tAW
DIN
DOUT
tWZ
Data undefined
tAH
tWP
tDW
tDH
Data valid
tOW
High Z
Write waveform 2 (CS controlled)10,11
Address
CS
LB, UB
WE
DIN
DOUT
tAS
tCLZ
High Z
tWC
tCW
tAW
tBW
tWP
tDW
tWZ
Data undefined
tAH
tDH
Data valid
tOW
High Z
10/6/00
ALLIANCE SEMICONDUCTOR
5