Rainbow Electronics DS1554 User Manual
Page 12
DS1554
12 of 20
READ CYCLE, AC CHARACTERISTICS
(Over the Operating Range)
V
CC
=5.0V
±±±±
10%
V
CC
=3.3V
±±±±
10%
PARAMETER
SYMBOL
MIN
MAX
MIN
MAX
UNITS
NOTES
Read Cycle Time
t
RC
70
120
ns
Address Access Time
t
AA
70
120
ns
CE
to DQ Low-Z
t
CEL
5
5
ns
CE
Access Time
t
CEA
70
120
ns
CE
Data Off time
t
CEZ
25
40
ns
OE
to DQ Low-Z
t
OEL
5
5
ns
OE
Access Time
t
OEA
35
100
ns
OE
Data Off Time
t
OEZ
25
35
ns
Output Hold from Address
t
OH
5
5
ns
WRITE CYCLE, AC CHARACTERISTICS
(Over the Operating Range)
V
CC
=5.0V
±±±±
10%
V
CC
=3.3V
±±±±
10%
PARAMETER
SYMBOL
MIN
MAX
MIN
MAX
UNITS
NOTES
Write Cycle Time
t
WC
70
120
ns
Address Access Time
t
AS
0
0
ns
WE
Pulse Width
t
WEW
50
100
ns
CE
Pulse Width
t
CEW
60
110
ns
Data Setup Time
t
DS
30
80
ns
Data Hold time
t
DH1
0
0
ns
9
Data Hold time
t
DH2
0
5
ns
10
Address Hold Time
t
AH1
5
0
ns
9
Address Hold Time
t
AH2
5
5
ns
10
WE
Data Off Time
t
WEZ
25
40
ns
Write Recovery Time
t
WR
5
10
ns