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參數(shù)資料
| 型號： | FM75M8 |
| 英文描述： | DIGITAL THERMOMETER|CMOS|SOP|8PIN |
| 中文描述： | 數(shù)字溫度計|的CMOS |專科| 8引腳 |
| 文件頁數(shù)： | 5/14頁 |
| 文件大小： | 2067K |
| 代理商： | FM75M8 |
5
F
www.fairchildsemi.com
FM75 Rev. A.4
Comparator Mode
In Comparator Mode, each time a temperature-to-digital (T-to-D)
temperature conversion occurs, the new digital temperature is
compared to the value stored in the T
OS
and T
HYST
registers. If a
fault tolerance number of consecutive temperature measure-
ments are greater than the value stored in the T
register, the
O.S. output will be activated. For example, if bits F1 and F0 are
equal to
“
10
”
(fault tolerance = 4), four consecutive temperature
measurements must exceed T
to activate the O.S. output. Once
the O.S output is active, it will remain active until the first time the
measured temperature drops below the temperature stored in the
T
register. The operation of the alarm in Comparator Mode
with fault tolerance=2 is illustrated in Figure 1.
Interrupt Mode
In Interrupt Mode the O.S. output will first become active after a
fault tolerance number of consecutive temperature measure-
ments exceed the value stored in the T
OS
register (similar to
Comparator Mode). Once O.S. is active, it can only be cleared by
a user read from any of the FM75 registers (Temperature, Con-
figuration, T
OS
, or T
HYST
) or by putting the FM75 into Shutdown
Mode (i.e., by setting the shutdown bit in the Configuration
Register to
“
1
”
). Once cleared, the O.S. output can only be
activated the next time by a fault tolerance number of consecutive
temperature measurements that are lower than the value stored
in T
. Again, once it is activated the O.S. output can only be
deactivated by a user read or shutdown. Thus, in Interrupt Mode
the activate/clear cycle for O.S. has the following pattern: tem-
perature > T
, clear, temperature < T
, clear, temperature >
T
OS
, clear, etc. The operation of the alarm in Interrupt Mode with
fault tolerance=2 is also illustrated in Figure 1.
Figure 1. Thermal Alarm Operation in Comparator and Interrupt Modes
For this example:
Fault Tolerance = 2
Output Polarity = Active Low
Read (or Shutdown
T
OS
T
HYST
Temperature-to-Digital
Conversion
O.S. (Comparator Mode)
O.S. (Interrupt Mode)
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| FM75MM8_Q | 功能描述:板上安裝溫度傳感器 Temp Sensor LV Digital I2C Comp RoHS:否 制造商:Omron Electronics 輸出類型:Digital 配置: 準(zhǔn)確性:+/- 1.5 C, +/- 3 C 溫度閾值: 數(shù)字輸出 - 總線接口:2-Wire, I2C, SMBus 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 最大工作溫度:+ 50 C 最小工作溫度:0 C 關(guān)閉: 安裝風(fēng)格: 封裝 / 箱體: 設(shè)備功能:Temperature and Humidity Sensor |
| FM75MM8X | 功能描述:板上安裝溫度傳感器 Temp Sensor LV Digital I2C Comp RoHS:否 制造商:Omron Electronics 輸出類型:Digital 配置: 準(zhǔn)確性:+/- 1.5 C, +/- 3 C 溫度閾值: 數(shù)字輸出 - 總線接口:2-Wire, I2C, SMBus 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 最大工作溫度:+ 50 C 最小工作溫度:0 C 關(guān)閉: 安裝風(fēng)格: 封裝 / 箱體: 設(shè)備功能:Temperature and Humidity Sensor |
| FM7C4 | 制造商:BACO Controls Inc 功能描述: |
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