MAX31820 man page on DragonFly

MAX31820 man page on DragonFly

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DS18B20(3)		     One-Wire File System		    DS18B20(3)

NAME
       DS18B20
	      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 PROPERTIES
DESCRIPTION
   DS18B20
       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.

ADDRESSING
DATASHEET
       http://pdfserv.maxim-ic.com/en/ds/DS18B20.pdf

SEE ALSO
AVAILABILITY
       http://www.owfs.org

AUTHOR
       Paul Alfille (paul.alfille@gmail.com)

OWFS Manpage			     2003			    DS18B20(3)

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