Datasheet

(-55°C to +125°C; V
DD
= 3.0V to 5.5V)
(-55°C to +125°C; V
DD
= 3.0V to 5.5V)
Note 12: See the timing diagrams in Figure 2.
Note 13: Under parasite power, if t
RSTL
> 960µs, a power-on reset can occur.
Figure 1. Typical Performance Curve
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
NV Write Cycle Time t
WR
2 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
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Temperature Conversion Time t
CONV
9-bit resolution
(Note 12)
93.75
ms
10-bit resolution 187.5
11-bit resolution 375
12-bit resolution 750
Time to Strong Pullup On t
SPON
Start convert T command issued 10 µs
Time Slot t
SLOT
(Note 12) 60 120 µs
Recovery Time t
REC
(Note 12) 1 µs
Write 0 Low Time t
LOW0
(Note 12) 60 120 µs
Write 1 Low Time t
LOW1
(Note 12) 1 15 µs
Read Data Valid t
RDV
(Note 12) 15 µs
Reset Time High t
RSTH
(Note 12) 480 µs
Reset Time Low t
RSTL
(Notes 12, 13) 480 µs
Presence-Detect High t
PDHIGH
(Note 12) 15 60 µs
Presence-Detect Low t
PDLOW
(Note 12) 60 240 µs
Capacitance C
IN/OUT
25 pF
AC Electrical Characteristics–NV Memory
AC Electrical Characteristics
DS18B20
TYPICAL ERROR CURVE
0.5
0.4
0.3
0
.2
0.1
0
-0.1
-0.2
-0.3
-0.4
-0.5
THERMOMETER ERROR (°C)
0 7010 20 30 40 50 60
TEMPERATURE (°C)
+3s ERROR
MEAN ERROR
-3s ERROR
DS18B20 Programmable Resolution
1-Wire Digital Thermometer
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