AS6UA51216
Write cycle (over the operating range)
–55
Parameter
Write cycle time
Chip enable to write end
Address setup to write end
Address setup time
Write pulse width
Address hold from end of write
Data valid to write end
Data hold time
Write enable to output in high Z
Output active from write end
UB/LB low to end of write
–70
Max
–
–
–
–
–
–
–
–
20
–
–
Min
70
60
60
0
55
0
30
0
0
5
55
Max
–
–
–
–
–
–
–
–
20
–
–
Min
100
80
80
0
70
0
40
0
0
5
70
–100
Max
–
–
–
–
–
–
–
–
20
–
–
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
4, 5
4, 5
4, 5
12
12
Notes
Symbol
t
WC
t
CW
t
AW
t
AS
t
WP
t
AH
t
DW
t
DH
t
WZ
t
OW
t
BW
Min
55
40
40
0
35
0
25
0
0
5
35
Shaded areas indicate preliminary information.
Write waveform 1 (WE controlled)
t
WC
Address
t
CW
CS
t
BW
LB, UB
t
AS
WE
t
DW
D
IN
D
OUT
Data undefined
t
WZ
Data valid
t
OW
High Z
t
DH
t
AW
t
WP
t
AH
Write waveform 2 (CS controlled)
t
WC
Address
t
AS
CS
t
CW
t
AW
t
BW
LB, UB
t
WP
WE
t
DW
D
IN
D
OUT
t
CLZ
High Z
t
WZ
Data undefined
Data valid
t
OW
High Z
t
DH
t
AH
6/27/00
ALLIANCE SEMICONDUCTOR
5