AS6VA25616
®
Read cycle (over the operating range)3,9
Parameter
Symbol
Min
Read cycle time
tRC
55
Address access time
tAA
–
Chip select (CS) access time
tACS
–
Output enable (OE) access time
tOE
–
Output hold from address change
tOH
10
CS low to output in low Z
tCLZ
10
CS high to output in high Z
tCHZ
0
OE low to output in low Z
tOLZ
5
UB/LB access time
tBA
–
UB/LB low to low Z
tBLZ
10
UB/LB high to high Z
tBHZ
0
OE high to output in high Z
tOHZ
0
Power up time
tPU
0
Power down time
tPD
–
Shaded areas indicate preliminary information.
Key to switching waveforms
Rising input
Falling input
Read waveform 1 (address controlled)3,6,7,9
tRC
Address
tOH
tAA
DOUT
Previous data valid
Read waveform 2 (CS, OE, UB, LB controlled)3,6,8,9
tRC
Address
tAA
OE
tOE
tOLZ
CS
tACS
tLZ
LB, UB
DOUT
tBA
tBLZ
Max
Unit
Notes
–
ns
55
ns
3
55
ns
3
25
ns
–
ns
5
–
ns
4, 5
20
ns
4, 5
–
ns
4, 5
55
ns
–
ns
4, 5
20
ns
4, 5
20
ns
4, 5
–
ns
4, 5
55
ns
4, 5
Undefined/don’t care
tOH
Data valid
Data valid
tOH
tOHZ
tHZ
tBHZ
4
ALLIANCE SEMICONDUCTOR
10/6/00