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94 lines
3.3 KiB
94 lines
3.3 KiB
Kernel driver adt7410 |
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===================== |
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Supported chips: |
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* Analog Devices ADT7410 |
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Prefix: 'adt7410' |
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Addresses scanned: None |
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Datasheet: Publicly available at the Analog Devices website |
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https://www.analog.com/static/imported-files/data_sheets/ADT7410.pdf |
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* Analog Devices ADT7420 |
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Prefix: 'adt7420' |
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Addresses scanned: None |
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Datasheet: Publicly available at the Analog Devices website |
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https://www.analog.com/static/imported-files/data_sheets/ADT7420.pdf |
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* Analog Devices ADT7310 |
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Prefix: 'adt7310' |
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Addresses scanned: None |
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Datasheet: Publicly available at the Analog Devices website |
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https://www.analog.com/static/imported-files/data_sheets/ADT7310.pdf |
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* Analog Devices ADT7320 |
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Prefix: 'adt7320' |
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Addresses scanned: None |
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Datasheet: Publicly available at the Analog Devices website |
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https://www.analog.com/static/imported-files/data_sheets/ADT7320.pdf |
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Author: Hartmut Knaack <[email protected]> |
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Description |
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----------- |
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The ADT7310/ADT7410 is a temperature sensor with rated temperature range of |
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-55°C to +150°C. It has a high accuracy of +/-0.5°C and can be operated at a |
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resolution of 13 bits (0.0625°C) or 16 bits (0.0078°C). The sensor provides an |
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INT pin to indicate that a minimum or maximum temperature set point has been |
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exceeded, as well as a critical temperature (CT) pin to indicate that the |
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critical temperature set point has been exceeded. Both pins can be set up with a |
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common hysteresis of 0°C - 15°C and a fault queue, ranging from 1 to 4 events. |
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Both pins can individually set to be active-low or active-high, while the whole |
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device can either run in comparator mode or interrupt mode. The ADT7410 supports |
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continuous temperature sampling, as well as sampling one temperature value per |
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second or even just get one sample on demand for power saving. Besides, it can |
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completely power down its ADC, if power management is required. |
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The ADT7320/ADT7420 is register compatible, the only differences being the |
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package, a slightly narrower operating temperature range (-40°C to +150°C), and |
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a better accuracy (0.25°C instead of 0.50°C.) |
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The difference between the ADT7310/ADT7320 and ADT7410/ADT7420 is the control |
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interface, the ADT7310 and ADT7320 use SPI while the ADT7410 and ADT7420 use |
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I2C. |
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Configuration Notes |
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------------------- |
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Since the device uses one hysteresis value, which is an offset to minimum, |
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maximum and critical temperature, it can only be set for temp#_max_hyst. |
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However, temp#_min_hyst and temp#_crit_hyst show their corresponding |
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hysteresis. |
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The device is set to 16 bit resolution and comparator mode. |
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sysfs-Interface |
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--------------- |
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======================== ==================================================== |
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temp#_input temperature input |
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temp#_min temperature minimum setpoint |
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temp#_max temperature maximum setpoint |
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temp#_crit critical temperature setpoint |
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temp#_min_hyst hysteresis for temperature minimum (read-only) |
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temp#_max_hyst hysteresis for temperature maximum (read/write) |
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temp#_crit_hyst hysteresis for critical temperature (read-only) |
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temp#_min_alarm temperature minimum alarm flag |
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temp#_max_alarm temperature maximum alarm flag |
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temp#_crit_alarm critical temperature alarm flag |
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======================== ====================================================
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