參數(shù)資料
型號： LM95241CIMM-2
廠商： National Semiconductor Corporation
元件分類： 溫度/濕度傳感器
英文描述： Dual Remote Diode Temperature Sensor with SMBus Interface and TruTherm⑩ Technology (65nm/90nm)
中文描述： 雙遠(yuǎn)程二極管溫度傳感器，帶有SMBus接口和TruTherm⑩科技（65nm/90nm）
文件頁數(shù)： 9/19頁
文件大小： 708K
代理商： LM95241CIMM-2
1.0 Functional Description
(Continued)
0.125C. The data format is a left justified 16-bit word avail-
able in two 8-bit registers. Unused bits will always report "0".
11-bit, 2’s complement (10-bit plus sign)
Temperature
Digital Output
Binary
0111 1101 0000 0000
0001 1001 0000 0000
0000 0001 0000 0000
0000 0000 0010 0000
0000 0000 0000 0000
1111 1111 1110 0000
1111 1111 0000 0000
1110 0111 0000 0000
1100 1001 0000 0000
Hex
7D00h
1900h
0100h
0020h
0000h
FFE0h
FF00h
E700h
C900h
+125C
+25C
+1C
+0.125C
0C
0.125C
1C
25C
55C
11-bit, unsigned binary
Temperature
Digital Output
Binary
1111 1111 1110 0000
1111 1111 0000 0000
1100 1001 0000 0000
0111 1101 0000 0000
0001 1001 0000 0000
0000 0001 0000 0000
0000 0000 0010 0000
0000 0000 0000 0000
Hex
FFE0h
FF00h
C900h
7D00h
1900h
0100h
0020h
0000h
+255.875C
+255C
+201C
+125C
+25C
+1C
+0.125C
0C
Remote temperature data with the digital filter on is repre-
sented by a 13-bit, two’s complement word or unsigned
binary word with an LSb (Least Significant Bit) equal to
0.03125C (1/32C). The data format is a left justified 16-bit
word available in two 8-bit registers. Unused bits will always
report "0".
13-bit, 2’s complement (12-bit plus sign)
Temperature
Digital Output
Binary
0111 1101 0000 0000
0001 1001 0000 0000
0000 0001 0000 0000
0000 0000 0000 1000
0000 0000 0000 0000
1111 1111 1111 0111
1111 1111 0000 0000
1110 0111 0000 0000
1100 1001 0000 0000
Hex
7D00h
1900h
0100h
0008h
0000h
FFF7h
FF00h
E700h
C900h
+125C
+25C
+1C
+0.03125C
0C
0.03125C
1C
25C
55C
13-bit, unsigned binary
Temperature
Digital Output
Binary
1111 1111 1110 0000
Hex
FFE0h
+255.875C
Temperature
Digital Output
Binary
1111 1111 0000 0000
1100 1001 0000 0000
0111 1101 0000 0000
0001 1001 0000 0000
0000 0001 0000 0000
0000 0000 0000 1000
0000 0000 0000 0000
Hex
FF00h
C900h
7D00h
1900h
0100h
0008h
0000h
+255C
+201C
+125C
+25C
+1C
+0.03125C
0C
Local Temperature data is represented by a 10-bit, two’s
complement word with an LSb (Least Significant Bit) equal to
0.25C. The data format is a left justified 16-bit word avail-
able in two 8-bit registers. Unused bits will always report "0".
Local temperature readings greater than +127.875C are
clamped to +127.875C, they will not roll-over to negative
temperature readings.
Temperature
Digital Output
Binary
0111 1101 0000 0000
0001 1001 0000 0000
0000 0001 0000 0000
0000 0000 0100 0000
0000 0000 0000 0000
1111 1111 1100 0000
1111 1111 0000 0000
1110 0111 0000 0000
1100 1001 0000 0000
Hex
7D00h
1900h
0100h
0040h
0000h
FFC0h
FF00h
E700h
C900h
+125C
+25C
+1C
+0.25C
0C
0.25C
1C
25C
55C
1.5 SMBDAT OPEN-DRAIN OUTPUT
The SMBDAT output is an open-drain output and does not
have internal pull-ups. A “high” level will not be observed on
this pin until pull-up current is provided by some external
source, typically a pull-up resistor. Choice of resistor value
depends on many system factors but, in general, the pull-up
resistor should be as large as possible without effecting the
SMBus desired data rate. This will minimize any internal
temperature reading errors due to internal heating of the
LM95241. The maximum resistance of the pull-up to provide
a 2.1V high level, based on LM95241 specification for High
Level Output Current with the supply voltage at 3.0V, is
82k
(5%) or 88.7k
(1%).
1.6 DIODE FAULT DETECTION
The LM95241 is equipped with operational circuitry designed
to detect fault conditions concerning the remote diodes. In
the event that the D+ pin is detected as shorted to GND, D,
V
or D+ is floating, the Remote Temperature reading is
–128.000 C if signed format is selected and +255.875 if
unsigned format is selected. In addition, the appropriate
status register bits RD1M or RD2M (D1 or D0) are set.
1.7 COMMUNICATING WITH THE LM95241
The data registers in the LM95241 are selected by the
Command Register. At power-up the Command Register is
set to “00”, the location for the Read Local Temperature
Register. The Command Register latches the last location it
was set to. Each data register in the LM95241 falls into one
of four types of user accessibility:
1.
Read only
L
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LM95241CIMM-2/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
LM95241CIMMX 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
LM95241CIMMX/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
LM95241CIMMX-1 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
LM95241CIMMX-1/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
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