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Commit | Line | Data |
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66e1c917 JM |
1 | Kernel driver tmp108 |
2 | ==================== | |
3 | ||
4 | Supported chips: | |
5 | * Texas Instruments TMP108 | |
6 | Prefix: 'tmp108' | |
7 | Addresses scanned: none | |
8 | Datasheet: http://www.ti.com/product/tmp108 | |
9 | ||
10 | Author: | |
11 | John Muir <john@jmuir.com> | |
12 | ||
13 | Description | |
14 | ----------- | |
15 | ||
16 | The Texas Instruments TMP108 implements one temperature sensor. An alert pin | |
17 | can be set when temperatures exceed minimum or maximum values plus or minus a | |
18 | hysteresis value. (This driver does not support interrupts for the alert pin, | |
19 | and the device runs in comparator mode.) | |
20 | ||
21 | The sensor is accurate to 0.75C over the range of -25 to +85 C, and to 1.0 | |
22 | degree from -40 to +125 C. Resolution of the sensor is 0.0625 degree. The | |
23 | operating temperature has a minimum of -55 C and a maximum of +150 C. | |
24 | Hysteresis values can be set to 0, 1, 2, or 4C. | |
25 | ||
26 | The TMP108 has a programmable update rate that can select between 8, 4, 1, and | |
27 | 0.5 Hz. | |
28 | ||
29 | By default the TMP108 reads the temperature continuously. To conserve power, | |
30 | the TMP108 has a one-shot mode where the device is normally shut-down. When a | |
31 | one shot is requested the temperature is read, the result can be retrieved, | |
32 | and then the device is shut down automatically. (This driver only supports | |
33 | continuous mode.) | |
34 | ||
35 | The driver provides the common sysfs-interface for temperatures (see | |
36 | Documentation/hwmon/sysfs-interface under Temperatures). |