AS6UA25616
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
70
100
ns
3
3
Chip enable (CS) access
time
tACS
tOE
–
–
55
25
–
–
–
70
35
–
–
–
100
50
–
ns
ns
ns
Output enable (OE) access
time
Output hold from address
change
tOH
10
10
15
5
CS
o output in low Z
tCLZ
10
0
–
20
–
10
0
–
20
–
10
0
–
20
–
ns
ns
ns
ns
ns
ns
4, 5
4, 5
4, 5
CS high to output in high Z tCHZ
OE low to output in low Z tOLZ
5
5
5
UB/ LB access time
UB/ LB low to low Z
UB/ LB high to high Z
tBA
tBLZ
tBHZ
–
55
–
–
70
–
–
100
–
10
0
10
0
10
0
4, 5
4, 5
20
20
20
OE high to output in high
Z
tOHZ
0
20
0
20
0
20
ns
4, 5
Power up time
tPU
tPD
0
–
–
0
–
–
0
–
–
ns
ns
4, 5
4, 5
Power down time
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/ 19/ 00
ALSC [ ALLIANCE SEMICONDUCTOR CORPORATION ]
