DS18B20(3) One-Wire File System DS18B20(3)NAMEDS18B20
Programmable Resolution 1-Wire Digital Thermometer
MAX31820
Ambient Temperature Sensor
SYNOPSIS
Thermometer.
28 [.]XXXXXXXXXXXX[XX][/[ die | power | temphigh | templow | errata/die
| errata/trim | errata/trimblanket | errata/trimvalid | ]]
FAMILY CODE
28
SPECIAL PROPERTIES
power
read-only,yes-no
Is the chip powered externally (=1) or from the parasitically from the
data bus (=0)?
temperature
read-only, floating point
Measured temperature with 12 bit resolution.
temperature9 temperature10 temperature11 temperature12
read-only, floating point Measured temperature at 9 to 12 bit resolu‐
tion. There is a tradeoff of time versus accuracy in the temperature
measurement.
fasttemp
read-only, floating point
Equivalent to temperature9
STANDARD PROPERTIESDESCRIPTIONDS18B20
The DS18B20 (3) is one of several available 1-wire temperature sensors.
It is the replacement for the DS18S20 (3) Alternatives are DS1822 (3)
as well as temperature/voltage measurements in the DS2436 (3) and
DS2438 (3). For truly versatile temperature measurements, see the pro‐
tean DS1921 (3) Thermachron (3).
The MAX31820 is functionally identical to the DS18B20 except for it's
voltage requirements.
The DS18B20 (3) can select between 4 resolutions. In general, high res‐
olution is the best choice unless your application is truly time-con‐
strained.
ADDRESSINGDATASHEET
http://pdfserv.maxim-ic.com/en/ds/DS18B20.pdf
SEE ALSOAVAILABILITY
http://www.owfs.org
AUTHOR
Paul Alfille (paul.alfille@gmail.com)
OWFS Manpage 2003 DS18B20(3)