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DS1822

更新时间： 2024-01-04 09:27:03
品牌 Logo 应用领域
达拉斯 - DALLAS /
页数 文件大小 规格书
20页 269K
描述
Econo 1-Wire Digital Thermometer

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DS1822 技术参数

是否无铅： 不含铅是否Rohs认证： 符合
生命周期：Active包装说明：SOP8,.25
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.39.00.01Factory Lead Time：6 weeks
风险等级：1.59Samacsys Description：Board Mount Temperature Sensors Econo 1-Wire Digital Thermometer
最大精度（摄氏度）：2 Cel其他特性：COMPLIANCE TO MIL-150
主体宽度：3.91 mm主体高度：1.55 mm
主体长度或直径：4.88 mm外壳：PLASTIC
JESD-609代码：e3安装特点：SURFACE MOUNT
位数：12端子数量：8
最大工作电流：1.5 mA最高工作温度：125 °C
最低工作温度：-55 °C输出接口类型：1-WIRE INTERFACE
封装主体材料：PLASTIC/EPOXY封装等效代码：SOP8,.25
封装形状/形式：RECTANGULAR电源：3.3/5 V
传感器/换能器类型：TEMPERATURE SENSOR,SWITCH/DIGITAL OUTPUT,SERIAL子类别：Other Sensors/Transducers
最大供电电压：5.5 V最小供电电压：3 V
表面贴装：YES端子面层：Matte Tin (Sn)
端接类型：SOLDER

DS1822 数据手册

 浏览型号DS1822的Datasheet PDF文件第12页浏览型号DS1822的Datasheet PDF文件第13页浏览型号DS1822的Datasheet PDF文件第14页浏览型号DS1822的Datasheet PDF文件第16页浏览型号DS1822的Datasheet PDF文件第17页浏览型号DS1822的Datasheet PDF文件第18页 
DS1822  
The DS1822 samples the 1-Wire bus during a window that lasts from 15ꢀs to 60ꢀs after the master  
initiates the write time slot. If the bus is high during the sampling window, a 1 is written to the DS1822.  
If the line is low, a 0 is written to the DS1822.  
READ/WRITE TIME SLOT TIMING DIAGRAM Figure 14  
START  
START  
OF SLOT  
OF SLOT  
MASTER WRITE “0” SLOT  
MASTER WRITE “1” SLOT  
1ꢀs < TREC < A  
60ꢀs < TX “0” < 120ꢀs  
> 1ꢀs  
VPU  
1-WIRE BUS  
GND  
DS1822 Samples  
DS1822 Samples  
MIN  
TYP  
MAX  
MIN  
TYP  
MAX  
15ꢀs  
15ꢀs  
15ꢀs  
15ꢀs  
30ꢀs  
30ꢀs  
MASTER READ “0” SLOT  
MASTER READ “1” SLOT  
1ꢀs < TREC < A  
VPU  
1-WIRE BUS  
GND  
> 1 ꢀs  
Master samples  
Master samples  
> 1ꢀs  
15ꢀs  
45ꢀs  
15ꢀs  
LINE TYPE LEGEND  
Bus master pulling low  
DS1822 pulling low  
Resistor pullup  
READ TIME SLOTS  
The DS1822 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 DS1822 can provide the requested data. In addition, the master can  
generate read time slots after issuing Convert T [44h] or Recall E2 [B8h] commands to find out the status  
of the operation as explained in the DS1822 FUNCTION COMMAND section.  
All read time slots must be a minimum of 60ꢀs in duration with a minimum of a 1ꢀs recovery time  
between slots. A read time slot is initiated by the master device pulling the 1-Wire bus low for a  
minimum of 1ꢀs and then releasing the bus (see Figure 14). After the master initiates the read time slot,  
the DS1822 will begin transmitting a 1 or 0 on bus. The DS1822 transmits a 1 by leaving the bus high  
and transmits a 0 by pulling the bus low. When transmitting a 0, the DS1822 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  
15 of 20  
1...12131415161718...20

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STM32F103C8T6 替代型号

型号 品牌 替代类型 描述 数据表

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