Read cycle, ac characteristics (0 ° c to 70 ° c; v, 0v ± =10%) – Rainbow Electronics DS1643P User Manual
Page 7
DS1643/DS1643P
7 of 14
READ CYCLE, AC CHARACTERISTICS (0
°
C to 70
°
C; V
CC
= 5.0V
±
=10%)
70 ns access
100 ns access
PARAMETER
SYMBOL
MIN
MAX
MIN
MAX
UNITS
NOTES
Read Cycle Time
t
RC
70
100
ns
4
Address Access Time
t
AA
70
100
ns
4
CE
and CE2 to DQ Low-Z
t
CEL
5
5
ns
4
CE
Access Time
t
CEA
70
100
ns
4
CE2 Access Time
t
CE2A
80
105
ns
4
CE
and CE2 Data Off Time
t
CEZ
25
35
ns
4
OE
to DQ Low-Z
t
OEL
5
5
ns
4
OE
Access Time
t
OEA
35
55
ns
4
OE
Data Off Time
t
OEZ
25
35
ns
4
Output Hold from Address
t
OH
5
5
ns
4
READ CYCLE TIMING DIAGRAM
WRITE CYCLE, AC CHARACTERISTICS (0
°
C to 70
°
C; V
CC
= 5.0V
±
=10%)
70 ns access
100 ns access
PARAMETER
SYMBOL
MIN
MAX
MIN
MAX
UNITS
NOTES
Write Cycle Time
t
WC
70
100
ns
4
Address Setup Time
t
AS
0
0
ns
4
WE
Pulse Width
t
WEW
50
70
ns
4
CE
Pulse Width
t
CEW
60
75
ns
4
CE2 Pulse Width
t
CE2W
65
85
ns
4
Data Setup Time
t
DS
30
40
ns
4
Data Hold Time
t
DH
0
0
ns
4
Address Hold Time
t
AH
5
5
ns
4
WE
Data Off Time
t
WEZ
25
35
ns
4
Write Recovery Time
t
WR
5
5
ns
4