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參數(shù)資料
| 型號： | LM74A-5MDA |
| 廠商： | National Semiconductor Corporation |
| 元件分類： | 溫度/濕度傳感器 |
| 英文描述： | SPI/MICROWIRE 12-Bit Plus Sign Temperature Sensor (LM74 in Die Form) |
| 中文描述： | 的SPI / MICROWIRE的12位帶符號溫度傳感器（LM74在模具中） |
| 文件頁數(shù)： | 9/12頁 |
| 文件大?。?/td> | 605K |
| 代理商： | LM74A-5MDA |
1.0 Functional Description
(Continued)
1.5 INTERNAL REGISTER STRUCTURE
The LM74A has three registers, the temperature register, the configuration register and the manufacturer’s/device identification
register. The temperature and manufacturer’s/device identification registers are read only. The configuration register is write only.
1.5.1 Configuration Register
(Selects shutdown or continuous conversion modes):
(Write Only):
D15
X
D14
X
D13
X
D12
X
D11
X
D10
X
D9
X
D8
X
D7
D6
D5
D4
Shutdown
D3
D2
D1
D0
D0–D15 set to XX FF hex enables shutdown mode.
D0–D15 set to 00 00 hex sets Continuous conversion mode.
Note: setting D0-D15 to any other values may place the LM70 into a manufacturer’s test mode, upon which the LM74A will stop
responding as described. These test modes are to be used for National Semiconductor production testing only. See Section 1.2
Serial Bus Interface for a complete discussion.
1.5.2 Temperature Register
(Read Only):
D15
MSB
D14
Bit 11
D13
Bit 10
D12
Bit 9
D11
Bit 8
D10
Bit 7
D9
Bit 6
D8
Bit 5
D7
Bit 4
D6
Bit 3
D5
Bit 2
D4
Bit 1
D3
LSB
D2
1
D1
X
D0
X
D0–D1: Undefined. TRI-STATE will be output on SI/0.
D2: Always set high.
D3–D15: Temperature Data. One LSB = 0.0625C. Two’s complement format.
1.5.3 Manufacturer’s/Device Id Register
(Read Only):
D15
1
D14
0
D13
0
D12
0
D11
0
D10
0
D9
0
D8
0
D7
0
D6
0
D5
0
D4
0
D3
0
D2
0
D1
X
D0
X
D0–D1: Undefined. TRI-STATE will be output on SI/0.
D2–D15: Manufacturer’s/Device ID Data. This register is accessed whenever the LM74A is in shutdown mode.
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| LM74CIBP-5 | 功能描述:IC TEMP SENSOR DGTL 5-MICROSMD RoHS:否 類別:集成電路 (IC) >> PMIC - 熱管理 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 功能:溫度監(jiān)控系統(tǒng)（傳感器） 傳感器類型:內(nèi)部和外部 感應(yīng)溫度:-40°C ~ 125°C，外部傳感器 精確度:±2.5°C 本地（最大值），±5°C 遠(yuǎn)程（最大值） 拓?fù)?ADC，比較器，寄存器庫 輸出類型:2 線 SMBus? 輸出警報:無 輸出風(fēng)扇:無 電源電壓:2.7 V ~ 5.5 V 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:SOT-23-8 供應(yīng)商設(shè)備封裝:SOT-23-8 包裝:Digi-Reel® 其它名稱:296-22675-6 |
| LM74CIBPX- | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:SPI/MICROWIRE⑩ 12-Bit Plus Sign Temperature Sensor |
| LM74CIBPX-3 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:SPI/MICROWIRE⑩ Digital Temperature Sensor |
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