AS6UA51216
Read cycle (over the operating range)
–55
–70
–100
Parameter
Read cycle time
Symbol
tRC
Min
55
–
Max
–
Min
70
–
Max
–
Min
100
–
Max
–
Unit
ns
Notes
Address access time
tAA
55
55
70
70
100
100
ns
3
3
Chip enable (CS) access time
tACS
–
–
–
ns
Output enable (OE) access
time
tOE
tOH
–
25
–
–
35
–
–
50
–
ns
ns
Output hold from address
change
10
10
15
5
CS
o output in low Z
tCLZ
tCHZ
tOLZ
tBA
10
0
–
20
–
10
0
–
20
–
10
0
–
20
–
ns
ns
ns
ns
ns
ns
ns
ns
ns
4, 5
4, 5
4, 5
CS high to output in high Z
OE low to output in low Z
UB/ LB access time
5
5
5
–
55
–
–
70
–
–
100
–
UB/ LB low to low Z
UB/ LB high to high Z
OE high to output in high Z
Power up time
tBLZ
tBHZ
tOHZ
tPU
10
0
10
0
10
0
4, 5
4, 5
4, 5
4, 5
4, 5
20
20
–
20
20
–
20
20
–
0
0
0
0
0
0
Power down time
tPD
–
55
–
70
–
100
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
AA
t
t
OH
OH
D
Previous data valid
Data valid
OUT
Read waveform 2 (CS, OE, UB, LB controlled)
t
RC
Address
t
AA
OE
CS
t
OE
t
t
OH
OLZ
t
OHZ
BHZ
t
ACS
t
t
HZ
LZ
LB, UB
t
t
BA
t
BLZ
D
Data valid
OUT
4
ALLIANCE SEMICONDUCTOR
6/ 27/ 00
ALSC [ ALLIANCE SEMICONDUCTOR CORPORATION ]
