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Alexander Stein
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Guenter Roeck
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Jul 28, 2011
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Kernel driver lm95245 | ||
================== | ||
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Supported chips: | ||
* National Semiconductor LM95245 | ||
Addresses scanned: I2C 0x18, 0x19, 0x29, 0x4c, 0x4d | ||
Datasheet: Publicly available at the National Semiconductor website | ||
http://www.national.com/mpf/LM/LM95245.html | ||
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Author: Alexander Stein <alexander.stein@systec-electronic.com> | ||
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Description | ||
----------- | ||
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The LM95245 is an 11-bit digital temperature sensor with a 2-wire System | ||
Management Bus (SMBus) interface and TruTherm technology that can monitor | ||
the temperature of a remote diode as well as its own temperature. | ||
The LM95245 can be used to very accurately monitor the temperature of | ||
external devices such as microprocessors. | ||
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All temperature values are given in millidegrees Celsius. Local temperature | ||
is given within a range of -127 to +127.875 degrees. Remote temperatures are | ||
given within a range of -127 to +255 degrees. Resolution depends on | ||
temperature input and range. | ||
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Each sensor has its own critical limit, but the hysteresis is common to all | ||
two channels. | ||
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The lm95245 driver can change its update interval to a fixed set of values. | ||
It will round up to the next selectable interval. See the datasheet for exact | ||
values. Reading sensor values more often will do no harm, but will return | ||
'old' values. |
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