參數(shù)資料
型號(hào)： DS18B20Z
元件分類： 溫度傳感器
英文描述： Programmable Resolution 1-Wire Digital Thermometer
中文描述： 可編程的1 - Wire數(shù)字溫度計(jì)
文件頁(yè)數(shù)： 4/27頁(yè)
文件大?。?/td> 391K
代理商： DS18B20Z
DS18B20
4 of 27
For situations where the bus master does not know whether the DS18B20s on the bus are parasite
powered or supplied with external V
DD
, a provision is made in the DS18B20 to signal the power supply
scheme used. The bus master can determine if any DS18B20s are on the bus which require the strong
pullup by sending a Skip ROM protocol, then issuing the read power supply command. After this
command is issued, the master then issues read time slots. The DS18B20 will send back “0” on the
1-Wire bus if it is parasite powered; it will send back a “1” if it is powered from the V
DD
pin. If the
master receives a “0,” it knows that it must supply the strong pullup on the DQ line during temperature
conversions. See “Memory Command Functions” section for more detail on this command protocol.
STRONG PULLUP FOR SUPPLYING DS18B20 DURING TEMPERATURE
CONVERSION
Figure 2
USING V
DD
TO SUPPLY TEMPERATURE CONVERSION CURRENT
Figure 3
μP
+3V - +5.5V
+3V - +5.5V
DS18B20
GND
V
DD
I/O
4.7k
μP
DS18B20
V
DD
I/O
+3V - +5.5V
4.7k
EXTERNAL
+3V - +5.5V
SUPPLY
TO OTHER
1-WIRE
DEVICES
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
DS18B20Z/T&R 制造商:Maxim Integrated Products 功能描述:HI RES MICROLAN DIG THERM 8-SOIC TR - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC THERM MICROLAN PROG-RES 8SOIC 制造商:Maxim Integrated Products 功能描述:Board Mount Temperature Sensors Prgmble Resolution 1-Wire Parasite Pwr
DS18B20Z/T&R 功能描述:板上安裝溫度傳感器 Prgmble Resolution 1-Wire Parasite Pwr 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
DS18B20Z+ 功能描述:板上安裝溫度傳感器 Prgmble Resolution 1-Wire Parasite Pwr 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
DS18B20Z+ 制造商:Maxim Integrated Products 功能描述:SEMICONDUCTOR ((NW))
DS18B20Z+T&R 制造商:Maxim Integrated Products 功能描述:HI RES MICROLAN DIG THERM 8-SOIC TR 制造商:Maxim Integrated Products 功能描述:TEMP SENSOR DGTL SERL (1-WIRE) 8SOIC N - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC THERM MICROLAN PROG-RES 8SOIC 制造商:Maxim Integrated Products 功能描述:Board Mount Temperature Sensors Prgmble Resolution 1-Wire Parasite Pwr
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