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參數(shù)資料
| 型號： | DS1720S+T&R |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | Switch/Digital Output Temperature Sensor |
| 英文描述： | DIGITAL TEMP SENSOR-SERIAL, 9BIT(s), RECTANGULAR, SURFACE MOUNT |
| 封裝： | 0.208 INCH, LEAD FREE, SOIC-8 |
| 文件頁數(shù)： | 11/14頁 |
| 文件大?。?/td> | 173K |
| 代理商： | DS1720S+T&R |
DS1720
6 of 14
THERMOSTAT OUTPUT OPERATION Figure 3
OPERATION AND CONTROL
The DS1720 must have temperature settings resident in the TH and TL registers for thermostatic operation.
A configuration/status register is also used to determine the method of operation that the DS1720 will use
in a particular application, as well as indicating the status of the temperature conversion operation. The
configuration register is defined as follows:
CONFIGURATION/STATUS REGISTER
DONE
THF
TLF
NVB
1
0
CPU
1SHOT
where
DONE = Conversion Done bit. 1=conversion complete, 0=conversion in progress.
THF = Temperature High Flag. This bit will be set to 1 when the temperature is greater than or equal to
the value of TH. It will remain 1 until reset by writing 0 into this location or by removing power from the
device. This feature provides a method of determining if the DS1720 has ever been subjected to
temperatures above TH while power has been applied.
TLF = Temperature Low Flag. This bit will be set to 1 when the temperature is less than or equal to the
value of TL. It will remain 1 until reset by writing 0 into this location or by removing power from the
device. This feature provides a method of determining if the DS1720 has ever been subjected to
temperatures below TL while power has been applied.
NVB = Nonvolatile Memory Busy Flag. 1=write to an E
2 memory cell in progress. 0=nonvolatile
memory is not busy. A copy to E
2 may take up to 10 ms.
CPU = CPU use bit. If CPU=0, the CLK/ CONV pin acts as a conversion start control, when RST is low.
If CPU is 1, the DS1720 will be used with a CPU communicating to it over the 3–wire port, and the
operation of the CLK/ CONV pin is as a normal clock in concert with DQ and RST . This bit is stored in
nonvolatile E
2 memory, capable of at least 50,000 writes. The DS1720 is shipped with CPU=0.
1SHOT = One–Shot Mode. If 1SHOT is 1, the DS1720 will perform one temperature conversion upon
reception of the Start Convert T protocol. If 1SHOT is 0, the DS1720 will continuously perform
temperature conversion. This bit is stored in nonvolatile E 2 memory, capable of at least 50,000 writes.
The DS1720 is shipped with 1SHOT=0.
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PDF描述 |
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| DS1720S+ | DIGITAL TEMP SENSOR-SERIAL, 9BIT(s), RECTANGULAR, SURFACE MOUNT |
| DS1720S | DIGITAL TEMP SENSOR-SERIAL, 9BIT(s), RECTANGULAR, SURFACE MOUNT |
| DS1721S+T&R | DIGITAL TEMP SENSOR-SERIAL, 12BIT(s), 1Cel, RECTANGULAR, SURFACE MOUNT |
| DS1721U+ | DIGITAL TEMP SENSOR-SERIAL, 12BIT(s), 1Cel, SQUARE, SURFACE MOUNT |
| DS1721U | DIGITAL TEMP SENSOR-SERIAL, 12BIT(s), 1Cel, SQUARE, SURFACE MOUNT |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS1720STR | 制造商:Maxim Integrated Products 功能描述: |
| DS1721 | 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:2-Wire Digital Thermometer and Thermostat |
| DS1721S | 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(guān)閉: 安裝風格: 封裝 / 箱體: 設備功能:Temperature and Humidity Sensor |
| DS1721S/T&R | 制造商:Maxim Integrated Products 功能描述:2-WIRE DIGITAL THERMOMETER SOIC T&R - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC THERMOMETER/STAT DIG HP 8SOIC |
| DS1721S/T&R+W | 制造商:Maxim Integrated Products 功能描述:DIGITAL THERMOMETER AND THERMOSTAT - Tape and Reel |
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