AS6UA25617
Read cycle (over the operating range)
–55
Parameter
Read cycle time
Address access time
Chip selects access time
Output enable (OE) access time
Output hold from address change
Chip selects low to output in low Z
Chip selects 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.
–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
ACS1,2
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
–
Key to switching waveforms
Rising input
Falling input
t
RC
Address
t
OH
D
OUT
Previous data valid
t
AA
Data valid
t
OH
Undefined/don’t care
Read waveform 1 (address controlled)
Read waveform 2 (chip selects, OE, UB, LB controlled)
t
RC
Address
t
AA
OE
t
OLZ
CS1
t
LZ
t
LZ
CS2
t
OLZ
LB, UB
t
BLZ
D
OUT
t
BA
Data valid
t
BHZ
t
OE
t
OH
t
HZ
t
ACS1
t
ACS1
t
OHZ
t
HZ
tt
OHZ
OHZ
t
OE
t
OH
4
ALSC [ ALLIANCE SEMICONDUCTOR CORPORATION ]
