DS1631/DS1631A/DS1731
6 of 15
EEPROM AC ELECTRICAL CHARACTERISTICS
(V
DD
= 2.7V to 5.5V; T
A
= -55癈 to +125癈.)
PARAMETER
SYMBOL
CONDITION
MIN TYP MAX UNITS
EEPROM Write Cycle Time
t
wr
4
10
ms
EEPROM Writes
N
EEWR
-55癈 to +55癈
50k
Writes
EEPROM Data Retention
t
EEDR
-55癈 to +55癈
10
Years
Figure 2. TYPICAL OPERATING CURVES
Figure 3. TIMING DIAGRAM
All timing is referenced to 0.9 x V
DD
and 0.1 x V
DD
.
-0.8
-0.6
-0.4
-0.2
0
0.2
0.4
0.6
0.8
0
10
20
30
40
50
60
70
+3
?
-3
?
Mean
REFERENCE TEMPERATURE (癈)
DS1631/DS1631A
-0.8
-0.6
-0.4
-0.2
0
0.2
0.4
0.6
0.8
-10
0
10
20 30 40 50
60
70
80
+3
?
-3
Mean
REFERENCE TEMPERATURE (癈)
DS1731