AS6UA51216
Read cycle (over the operating range)
–55
Parameter
Read cycle time
Address access time
Chip enable (CS) access time
Output enable (OE) access
time
Output hold from address
change
CS
o output in low Z
–70
Max
–
55
55
25
–
–
20
–
55
–
20
20
–
55
Min
70
–
–
–
10
10
0
5
–
10
0
0
0
–
Max
–
70
70
35
–
–
20
–
70
–
20
20
–
70
Min
100
–
–
–
15
10
0
5
–
10
0
0
0
–
–100
Max
–
100
100
50
–
–
20
–
100
–
20
20
–
100
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
4, 5
4, 5
4, 5
4, 5
4, 5
5
4, 5
4, 5
4, 5
3
3
Notes
Symbol
t
RC
t
AA
t
ACS
t
OE
t
OH
t
CLZ
t
CHZ
t
OLZ
t
BA
t
BLZ
t
BHZ
t
OHZ
t
PU
t
PD
Min
55
–
–
–
10
10
0
5
–
10
0
0
0
–
CS high to output in high Z
OE low to output in low Z
UB/LB access time
UB/LB low to low Z
UB/LB high to high Z
OE high to output in high Z
Power up time
Power down time
Shaded areas indicate preliminary information.
Key to switching waveforms
Rising input
Falling input
Undefined/don’t care
Read waveform 1 (address controlled)
t
RC
Address
t
OH
D
OUT
Previous data valid
t
AA
Data valid
t
OH
Read waveform 2 (CS, OE, UB, LB controlled)
t
RC
Address
t
AA
OE
t
OLZ
CS
t
LZ
LB, UB
t
BLZ
D
OUT
t
BA
Data valid
t
BHZ
t
ACS
t
OHZ
t
HZ
t
OE
t
OH
4
ALLIANCE SEMICONDUCTOR
6/27/00
ALSC [ ALLIANCE SEMICONDUCTOR CORPORATION ]
