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參數(shù)資料
| 型號： | LM90CIMM |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 溫度/濕度傳感器 |
| 英文描述： | 3 Degree Celcious Accurate, Remote Diode and Local Digital Temperature Sensor with Two-Wire Interface |
| 中文描述： | DIGITAL TEMP SENSOR-SERIAL, 11BIT(s), 4Cel, SQUARE, SURFACE MOUNT |
| 封裝： | PLASTIC, MSOP-8 |
| 文件頁數(shù)： | 11/20頁 |
| 文件大?。?/td> | 384K |
| 代理商： | LM90CIMM |
1.0 Functional Description
(Continued)
1.9.1 SMBus Timing Diagrams
1.10 SERIAL INTERFACE RESET
In the event that the SMBus Master is RESET while the
LM90 is transmitting on the SMBData line, the LM90 must be
returned to a known state in the communication protocol.
This may be done in one of two ways:
1.
When SMBData is LOW, the LM90 SMBus state ma-
chine resets to the SMBus idle state if either SMBData
or SMBCLK are held low for more than 35ms (t
).
Note that according to SMBus specification 2.0 all de-
vices are to timeout when either the SMBCLK or SMB-
Data lines are held low for 25-35ms. Therefore, to insure
a timeout of all devices on the bus the SMBCLK or
SMBData lines must be held low for at least 35ms.
2.
When SMBData is HIGH, have the master initiate an
SMBus start. The LM90 will respond properly to an
SMBus start condition at any point during the communi-
cation. After the start the LM90 will expect an SMBus
Address address byte.
1.11 DIGITAL FILTER
In order to suppress erroneous remote temperature readings
due to noise, the LM90 incorporates a user-configured digital
filter. The filter is accessed in the FILTER and ALERT CON-
FIGURE REGISTER at BFh. The filter can be set according
to the following table.
20033710
(a) Serial Bus Write to the internal Command Register followed by a the Data Byte
20033711
(b) Serial Bus Write to the Internal Command Register
20033712
(c) Serial Bus Read from a Register with the Internal Command Register preset to desired value.
FIGURE 7. SMBus Timing Diagrams
L
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM90CIMM/NOPB | 功能描述:板上安裝溫度傳感器 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 |
| LM90CIMMX | 功能描述:板上安裝溫度傳感器 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 |
| LM90CIMMX/NOPB | 功能描述:板上安裝溫度傳感器 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 |
| LM90EVAL | 功能描述:溫度傳感器開發(fā)工具 LM90 EVAL KIT RoHS:否 制造商:Texas Instruments 產(chǎn)品類型:Temperature Sensors and Control ICs 工具用于評估:MSP430G2553 接口類型:USB 工作電源電壓: 工作電源電流: |
| LM91 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述: |
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