In addition, the DS18B20 can derive power directly from the data line (“parasite power”), eliminating the need for an external power supply. Each DS18B20... 文档格式:PDF | 页数:21 | 浏览次数:88 | 上传日期:2023-06-02 11:08:40 | 文档星级: ...
device when used in parasite power mode (see the Powering the DS18B20 section.) 2 DQ 1 GND Ground Maxim Integrated │ 4 www.maximintegrated.com DS18B20 Programmable Resolution 1-Wire Digital Thermometer DQ pin when the bus is high. The high bus signal also Overview charges ...
DS18B20isusedinparasitepowermode,theVDDpinmustbeconnectedtoground. Inparasitepowermode,the1-WirebusandCPPcanprovidesufficientcurrenttotheDS18B20formost operationsaslongasthespecifiedtimingandvoltagerequirementsaremet(seetheDCElectrical CharacteristicsandACElectricalCharacteristics).However,whentheDS18B20isperforming ...
(See “Parasite Power” section.) 3 3 VDD Optional VDD pin. See “Parasite Power” section for details of connection. VDD must be grounded for operation in parasite power mode. DS18B20Z (8-pin SOIC): All pins not specified in this table are not to be connected. OVERVIEW The block ...
When the DS18B20 is used in parasite power mode, the VDD pin must be connected to ground. In parasite power mode, the 1-Wire bus and CPP can provide sufficient current to the DS18B20 for most operations as long as the specified timing and voltage requirements are met (refer to the DC EL...
56、w. When the DS18B20 is used in parasite power mode, the VDD pin must be connected to ground.In parasite power mode, the 1-Wire bus and CPP can provide sufficient current to the DS18B20 for most operations as long as the specified timing and voltage requirements are met (see the DC...
单总线设备可以从数据线获取电源，这种方式被称为“寄生电源”（Parasite Power）。在数据线为高电平时，...
Parasite power mode/寄生供电 所谓的寄生供电是指DS18x20只需要两根接线,一根数据线,一根接地线,数据线上还要接一个4.7k上拉电阻连电源,数据线同时也提供了电能。DS18x20内置了电容,高电平期时把电能储存在内部电容里,低电平期内消耗内部电容里的能量工作,直到下次高电平期内再次电容充电。虽然这样的模式简化了线路...
When the DS18B20 is used in parasite power mode, the VDD pin must be connected to ground. In parasite power mode, the 1-Wire bus and CPP can provide sufficient current to the DS18B20 for most operations as long as the specified timing and voltage requirements are met (see the DC ...
Matteo, The component was not designed to operate with DS18B20 in parasite mode. Never tested, so can't comment. Did you try the demo project provided with the component? Please post your project for review, select project name in Project Explorer window, then File->Create workspace bundle->...