Documentation/hwmon/ds1621.rst

47       - Christian W. Zuckschwerdt <zany@triq.net>
48       - valuable contributions by Jan M. Sendler <sendler@sendler.de>
49       - ported to 2.6 by Aurelien Jarno <aurelien@aurel32.net>
53 ------------------
58   * 0 = active high,
62 -----------
65 both high and low temperature limits which can be user defined (i.e.
66 programmed into non-volatile on-chip registers). Temperature range is -55
68 Fahrenheit range of -67 to +257 degrees with 0.9 steps. If polarity
74 stays high until the high limit is met or exceeded. On the other hand
76 "conditioner" equals "active high". Please note that the DS1621 data sheet
81 of up to +/- 0.5 degrees even when compared against precise temperature
82 readings. Be sure to have a high vs. low temperature limit gap of al least
85 The alarm bits are set when the high or low limits are met or exceeded and
91 any of the limits have ever been met or exceeded since last power-up or
102 also pin compatible with the DS1621 and provide multi-resolution support.
110 ----------------------
112 - DS1621 - 750ms (older devices may take up to 1000ms)
113 - DS1625 - 500ms
114 - DS1631 - 93ms..750ms for 9..12 bits resolution, respectively.
115 - DS1721 - 93ms..750ms for 9..12 bits resolution, respectively.
116 - DS1731 - 93ms..750ms for 9..12 bits resolution, respectively.
119 On the DS1621, internal access to non-volatile registers may last for 10ms
122 Temperature Accuracy
123 --------------------
125 - DS1621: +/- 0.5 degree Celsius (from 0 to +70 degrees)
126 - DS1625: +/- 0.5 degree Celsius (from 0 to +70 degrees)
127 - DS1631: +/- 0.5 degree Celsius (from 0 to +70 degrees)
128 - DS1721: +/- 1.0 degree Celsius (from -10 to +85 degrees)
129 - DS1731: +/- 1.0 degree Celsius (from -10 to +85 degrees)
133    Please refer to the device datasheets for accuracy at other temperatures.
136 -----------------------
137 As mentioned above, the DS1631, DS1721, and DS1731 provide multi-resolution
141 ------
154    At initial device power-on, the default resolution is set to 12-bits.
215  - 'x' = the output from 'update_interval'
216  - 'g(x)' = the resolution in degrees C per LSB.
217  - 93.75ms = minimum conversion time