參數(shù)資料
型號(hào)： DS18B20Z/T&R
廠商： Maxim Integrated
文件頁(yè)數(shù)： 16/22頁(yè)
文件大小： 528K
描述： IC THERM MICROLAN PROG-RES 8SOIC
產(chǎn)品培訓(xùn)模塊： Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標(biāo)準(zhǔn)包裝： 2,500
功能： 溫度計(jì)，恒溫計(jì)
傳感器類型： 內(nèi)部
感應(yīng)溫度： -55°C ~ 125°C
精確度： ±2°C（最小值）
拓?fù)洌?/td> 寄存器庫(kù)，變簽式暫存器
輸出類型： 1-Wire?
輸出警報(bào)： 是
輸出風(fēng)扇： 無(wú)
電源電壓： 3 V ~ 5.5 V
工作溫度： -55°C ~ 125°C
安裝類型： 表面貼裝
封裝/外殼： 8-SOIC（0.154"，3.90mm 寬）
供應(yīng)商設(shè)備封裝： 8-SOIC
包裝： 帶卷 (TR)
DS18B20
 
16 of 22 
The DS18B20 samples the 1-Wire bus during a window that lasts from 15祍 to 60祍 after the master
initiates the write time slot. If the bus is high during the sampling window, a 1 is written to the DS18B20.
If the line is low, a 0 is written to the DS18B20.
Figure 14. Read/Write Time Slot Timing Diagram 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
READ TIME SLOTS
The DS18B20 can only transmit data to the master when the master issues read time slots. Therefore, the
master must generate read time slots immediately after issuing a Read Scratchpad [BEh] or Read Power
Supply [B4h] command, so that the DS18B20 can provide the requested data. In addition, the master can
generate read time slots after issuing Convert T [44h] or Recall E
2
 [B8h] commands to find out the status
of the operation as explained in the DS18B20 Function Commands section.
 
All read time slots must be a minimum of 60祍 in duration with a minimum of a 1祍 recovery time
between slots. A read time slot is initiated by the master device pulling the 1-Wire bus low for a
minimum of 1祍 and then releasing the bus (see Figure 14). After the master initiates the read time slot,
the DS18B20 will begin transmitting a 1 or 0 on bus. The DS18B20 transmits a 1 by leaving the bus high
and transmits a 0 by pulling the bus low. When transmitting a 0, the DS18B20 will release the bus by the
end of the time slot, and the bus will be pulled back to its high idle state by the pullup resister. Output
45?/SPAN>s  
15?/SPAN>s  
V
PU
 
GND
1-WIRE BUS
60  s < T
X
 0 < 120  s
1?/SPAN>s < T
REC
 <  
DS18B20 Samples
MIN
TYP
MAX
15  s  
30  s  
> 1?/SPAN>s 
MASTER WRITE 0 SLOT 
MASTER WRITE 1 SLOT 
V
PU
 
GND
1-WIRE BUS
15?/SPAN>s  
MASTER READ 0 SLOT 
MASTER READ 1 SLOT 
Master samples 
Master samples 
START
OF SLOT 
START
OF SLOT 
> 1 ?/SPAN>s 
1?/SPAN>s < T
REC
 <  
15  s  
15?/SPAN>s  
30?/SPAN>s  
15?/SPAN>s  
DS18B20 Samples
MIN TYP MAX
LINE TYPE LEGEND
Bus master pulling low
 
DS18B20 pulling low
 
 
Resistor pullup
> 1?/SPAN>s 
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參數(shù)描述
DS18B20Z-W 制造商:Maxim Integrated Products 功能描述:
DS18S20 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
DS18S20/T&R 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述:IC THERM MICROLAN HI PREC TO-92
DS18S20/T&R 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
DS18S20+ 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
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