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參數(shù)資料
| 型號： | LM87 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | Serial Interface System Hardware Monitor with Remote Diode Temperature Sensing |
| 中文描述： | 串行接口系統(tǒng)硬件監(jiān)控與遠程二極管溫度傳感器 |
| 文件頁數(shù)： | 12/32頁 |
| 文件大?。?/td> | 470K |
| 代理商： | LM87 |
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Functional Description
(Continued)
2.2 Serial Bus Interface
The Serial Bus control lines consist of the SMBData (serial
data), SMBCLK (serial clock) and ADD (address) pin. The
LM87 can operate only as a slave. The SMBCLK line only
controls the serial interface, all other clock functions within
LM87 such as the ADC and fan counters are done with a
separate asynchronous internal clock.
When using the Serial Bus Interface, a write will always
consist of the LM87 Serial Bus Interface Address byte, fol-
lowed by the Internal Address Register byte, then the data
byte. There are two cases for a read:
1.
If the InternalAddress Register is known to already be at
the desired Address, simply read the LM87 with the
Serial Bus Interface Address byte, followed by the data
byte read from the LM87.
If the Internal Address Register value is unknown, or if it
is not the desired value, write to the LM87 with the Serial
Bus Interface Address byte, followed by the Internal
Address Register byte. Then restart the Serial Commu-
nication with a Read consisting of the Serial Bus Inter-
face Address byte, followed by the data byte read from
the LM87.
The Serial Bus address of the LM87 is set to 010 11(X)(Y).
All bits, except for X and Y, are fixed and cannot be changed.
The values for X and Y are set by the state of theADD pin on
2.
10099508
(a) Serial Bus Write to the Internal Address Register followed by the Data Byte
10099509
(b) Serial Bus Write to the Internal Address Register Only
10099510
(c) Serial Bus Read from a Register with the Internal Address Register Preset to Desired Location
FIGURE 5. Serial Bus Timing
L
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| LM87CIMT | 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 關閉: 安裝風格: 封裝 / 箱體: 設備功能:Temperature and Humidity Sensor |
| LM87CIMT | 制造商:Texas Instruments 功能描述:HDW MON, 2 REMOTE TEMP SENS, SMD 制造商:Texas Instruments 功能描述:HDW MON, 2 REMOTE TEMP SENS, SMD; IC Output Type:Voltage; Sensing Accuracy Range: 3C; Sensing Temperature Min:-40C; Sensing Temperature Max:+125C; Supply Voltage Min:2.8V; Supply Voltage Max:3.8V; Sensor Case Style:TSSOP; No. of ;RoHS Compliant: Yes |
| LM87CIMT/NOPB | 功能描述:板上安裝溫度傳感器 Hdw Mon & 2 Remote Temp Sens RoHS:否 制造商:Omron Electronics 輸出類型:Digital 配置: 準確性:+/- 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 關閉: 安裝風格: 封裝 / 箱體: 設備功能:Temperature and Humidity Sensor |
| LM87CIMTX | 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 關閉: 安裝風格: 封裝 / 箱體: 設備功能:Temperature and Humidity Sensor |
| LM87CIMTX/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 關閉: 安裝風格: 封裝 / 箱體: 設備功能:Temperature and Humidity Sensor |
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