Datasheet

DS1631/DS1631A/DS1731
6 of 15
EEPROM AC ELECTRICAL CHARACTERISTICS
(V
DD
= 2.7V to 5.5V; T
A
= -55°C to +125°C.)
PARAMETER SYMBOL CONDITION MIN TYP MAX UNITS
EEPROM Write Cycle Time t
wr
4 10 ms
EEPROM Writes N
EEWR
-55°C to +55°C 50k Writes
EEPROM Data Retention t
EEDR
-55°C to +55°C 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
σ
-3
σ
Mean
REFERENCE TEMPERATURE (°C)
ERROR (°C)
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
σ
-3
σ
Mean
REFERENCE TEMPERATURE (°C)
ERROR (°C)
DS1731