AS6UA25617
Read cycle (over the operating range)
–55
–70
–100
Parameter
Read cycle time
Symbol Min
Max
–
Min
70
–
Max
–
Min
100
–
Max
–
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Notes
tRC
tAA
tACS1,2
tOE
55
–
Address access time
55
55
25
–
70
70
35
–
100
100
50
–
3
3
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
–
–
–
–
–
–
tOH
10
10
0
10
10
0
15
10
0
5
tCLZ
tCHZ
tOLZ
tBA
–
–
–
4, 5
4, 5
4, 5
20
–
20
–
20
–
5
5
5
–
55
–
–
70
–
–
100
–
UB/ LB low to low Z
tBLZ
tBHZ
tOHZ
tPU
10
0
10
0
10
0
4, 5
4, 5
4, 5
4, 5
4, 5
UB/ LB high to high Z
20
20
–
20
20
–
20
20
–
OE high to output in high Z
Power up time
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 (chip selects, OE, UB, LB controlled)
t
RC
Address
t
AA
OE
t
OE
t
t
t
OH
OLZ
OLZ
CS1
t
t
t
OHZ
LZ
t
t
t
t
t
HZ
OHZ
OHZ
ACS1
ACS1
LZ
CS2
t
OH
t
t
HZ
OE
LB, UB
t
t
BHZ
BA
t
BLZ
D
Data valid
OUT
4
ALSC [ ALLIANCE SEMICONDUCTOR CORPORATION ]
