- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄358873 > LM75BIM-3 (National Semiconductor Corporation) Digital Temperature Sensor and Thermal WATCHDOG? with Two-Wire Interface PDF資料下載
參數(shù)資料
| 型號(hào)： | LM75BIM-3 |
| 廠商： | National Semiconductor Corporation |
| 元件分類： | 溫度/濕度傳感器 |
| 英文描述： | Digital Temperature Sensor and Thermal WATCHDOG? with Two-Wire Interface |
| 中文描述： | 數(shù)字溫度傳感器和熱看門狗？與兩線接口 |
| 文件頁(yè)數(shù)： | 10/18頁(yè) |
| 文件大?。?/td> | 356K |
| 代理商： | LM75BIM-3 |
第1頁(yè)第2頁(yè)第3頁(yè)第4頁(yè)第5頁(yè)第6頁(yè)第7頁(yè)第8頁(yè)第9頁(yè)當(dāng)前第10頁(yè)第11頁(yè)第12頁(yè)第13頁(yè)第14頁(yè)第15頁(yè)第16頁(yè)第17頁(yè)第18頁(yè)
1.0 Functional Description
(Continued)
1.10 INTERNAL REGISTER STRUCTURE
01265808
There are four data registers in the LM75, selected by the
Pointer register. At power-up the Pointer is set to “00”; the
location for the Temperature Register. The Pointer register
latches whatever the last location it was set to. In Interrupt
Mode, a read from the LM75, or placing the device in shut-
down mode, resets the O.S. output. All registers are read
and write, except the Temperature register which is read
only.
A write to the LM75 will always include the address byte and
the Pointer byte. A write to the Configuration register re-
quires one data byte, and the T
OS
and T
HYST
registers
require two data bytes.
Reading the LM75 can take place either of two ways: If the
location latched in the Pointer is correct (most of the time it is
expected that the Pointer will point to the Temperature reg-
ister because it will be the data most frequently read from the
LM75), then the read can simply consist of an address byte,
followed by retrieving the corresponding number of data
bytes. If the Pointer needs to be set, then an address byte,
pointer byte, repeat start, and another address byte will
accomplish a read.
The first data byte is the most significant byte with most
significant bit first, permitting only as much data as neces-
sary to be read to determine temperature condition. For
instance, if the first four bits of the temperature data indi-
cates an overtemperature condition, the host processor
could immediately take action to remedy the excessive tem-
peratures. At the end of a read, the LM75 can accept either
Acknowledge or No Acknowledge from the Master (No Ac-
knowledge is typically used as a signal for the slave that the
Master has read its last byte).
An inadvertent 8-bit read from a 16-bit register, with the D7
bit low, can cause the LM75 to stop in a state where the SDA
line is held low as shown in
Figure 5
. This can prevent any
further bus communication until at least 9 additional clock
cycles have occurred. Alternatively, the master can issue
clock cycles until SDA goes high, at which time issuing a
“Stop” condition will reset the LM75.
01265809
FIGURE 5. Inadvertent 8-Bit Read from 16-Bit Register where D7 is Zero (“0”)
L
www.national.com
10
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LM75DM-33R2 | 2-Wire Serial Temperature Sensor and Monitor |
| LM77000 | Power Operational Amplifiers |
| LM77000CP | Power Operational Amplifiers |
| LM77CIMM-5 | 9-Bit Sign Digital Temperature Sensor and Thermal Window Comparator with Two-Wire Interface |
| LM7800C | Series 3-Terminal Positive Regulators |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM75BIM-3/NOPB | 功能描述:板上安裝溫度傳感器 Digital Temp Sensor 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 |
| LM75BIM-3+ | 功能描述:板上安裝溫度傳感器 2-Wire Digital Temp Snsr & Thrml Wtchdog 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 |
| LM75BIM-3+T | 功能描述:板上安裝溫度傳感器 2-Wire Digital Temp Snsr & Thrml Wtchdog 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 |
| LM75BIM-5 | 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 |
| LM75BIM-5/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 |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。