DS1225AB/AD
AC ELECTRICAL CHARACTERISTICS
PARAMETER
(V
CC
=5V ± 5% for DS1225AB)
(T
A
: See Note 10)
(V
CC
=5V ± 10% for DS1225AD)
DS1220AB-85
DS1220AD-85
MIN MAX
85
85
45
85
UNITS
NOTES
Read Cycle Time
Access Time
OE to Output Valid
CE to Output Valid
OE or CE to Output Active
Output High Z from Deselection
Output Hold from Address
Change
Write Cycle Time
Write Pulse Width
Address Setup Time
Write Recovery Time
Output High Z from WE
Output Active from WE
Data Setup Time
Data Hold Time
DS1225AB-70
SYMBOL DS1225AD-70
MIN MAX
t
RC
70
t
ACC
70
35
t
OE
70
t
CO
5
t
COE
t
OD
25
5
t
OH
5
30
5
85
65
0
0
10
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
5
5
t
WC
t
WP
t
AW
t
WR1
t
WR2
t
ODW
t
OEW
t
DS
t
DH1
t
DH2
70
55
0
0
10
25
5
30
0
10
3
12
13
5
5
4
12
13
30
5
35
0
10
4 of 10
DALLAS [ DALLAS SEMICONDUCTOR ]
