AS6UA51216
Read cycle (over the operating range)
β55
β70
Parameter
Symbol Min
Max
Min
Max
Read cycle time
tRC
55
β
70
β
Address access time
tAA
β
55
β
70
Chip enable (CS) access time tACS
β
55
β
70
Output enable (OE) access
time
tOE
β
25
β
35
Output hold from address
change
tOH
10
β
10
β
CS o output in low Z
tCLZ
10
β
10
β
CS high to output in high Z tCHZ
0
20
0
20
OE low to output in low Z
tOLZ
5
β
5
β
UB/LB access time
tBA
β
55
β
70
UB/LB low to low Z
tBLZ
10
β
10
β
UB/LB high to high Z
tBHZ
0
20
0
20
OE high to output in high Z tOHZ
0
20
0
20
Power up time
tPU
0
β
0
β
Power down time
tPD
β
55
β
70
Shaded areas indicate preliminary information.
Key to switching waveforms
Rising input
Falling input
β100
Min
Max
100
β
β
100
β
100
β
50
15
β
10
β
0
20
5
β
β
100
10
β
0
20
0
20
0
β
β
100
Unit Notes
ns
ns
3
ns
3
ns
ns
5
ns
4, 5
ns
4, 5
ns
4, 5
ns
ns
4, 5
ns
4, 5
ns
4, 5
ns
4, 5
ns
4, 5
Undefined/donβt care
Read waveform 1 (address controlled)
Address
DOUT
Previous data valid
tOH
tAA
Read waveform 2 (CS, OE, UB, LB controlled)
Address
OE
CS
LB, UB
DOUT
tAA
tOE
tOLZ
tACS
tLZ
tBA
tBLZ
tRC
tOH
Data valid
tRC
Data valid
tOH
tOHZ
tHZ
tBHZ
4
ALLIANCE SEMICONDUCTOR
6/27/00