Datasheet > DS18S20-PAR

DS18S20-PAR

更新时间： 2023-12-20 18:44:36

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
20页	250K
描述
寄生供电数字温度计

阅读下载

中文翻译

获取价格

数据手册

如果您发现信息不准确，欢迎纠错

DS18S20-PAR 数据手册

DS18S20-PAR

DETAILED PIN DESCRIPTIONS Table 1

SYMBOL

GND

DESCRIPTION

Ground.

Data Input/Output pin. Open-drain 1-Wire interface pin. Also provides power

to the device when used in parasite power mode (see “Parasite Power” section.)

No Connect. Doesn’t connect to internal circuit.

OVERVIEW

The DS18S20-PAR uses Dallas’ exclusive 1-Wire bus protocol that implements bus communication

using one control signal. The control line requires a weak pullup resistor since all devices are linked to

the bus via a 3-state or open-drain port (the DQ pin in the case of the DS18S20-PAR). In this bus system,

the microprocessor (the master device) identifies and addresses devices on the bus using each device’s

unique 64-bit code. Because each device has a unique code, the number of devices that can be addressed

on one bus is virtually unlimited. The 1-Wire bus protocol, including detailed explanations of the

commands and “time slots,” is covered in the 1-WIRE BUS SYSTEM section of this datasheet.

An important feature of the DS18S20-PAR is its ability to operate without an external power supply.

Power is instead supplied through the 1-Wire pullup resistor via the DQ pin when the bus is high. The

high bus signal also charges an internal capacitor (C_PP), which then supplies power to the device when the

bus is low. This method of deriving power from the 1-Wire bus is referred to as “parasite power.”

Figure 1 shows a block diagram of the DS18S20-PAR, and pin descriptions are given in Table 1. The

64-bit ROM stores the device’s unique serial code. The scratchpad memory contains the 2-byte

temperature register that stores the digital output from the temperature sensor. In addition, the scratchpad

provides access to the 1-byte upper and lower alarm trigger registers (T_Hand T_L). The T_Hand T_L

registers are nonvolatile (EEPROM), so they will retain their data when the device is powered down.

DS18S20-PAR BLOCK DIAGRAM Figure 1

V_PU

PARASITE POWER

CIRCUIT

4.7K

MEMORY CONTROL

LOGIC

DS18S20-PAR

TEMPERATURE SENSOR

64-BIT ROM

AND

INTERNAL V_DD

1-wire PORT

ALARM HIGH TRIGGER (T_H)

SCRATCHPAD

C_PP

ALARM LOW TRIGGER (T_L)

GND

8-BIT CRC GENERATOR

2 of 20

123 4 5 6 7...20

中文翻译

下载PDF

与DS18S20-PAR相关器件

型号	品牌	获取价格	描述	数据表
DS18S20-PAR+T&R	MAXIM	获取价格	Serial Switch/Digital Sensor, 9 Bit(s), 0.50Cel, Round, Through Hole Mount, TO-92, 3 PIN
DS18S20-SL+T&R	MAXIM	获取价格	Serial Switch/Digital Sensor, 9 Bit(s), 0.50Cel, Rectangular, 3 Pin, Through Hole Mount, R
DS18S20Z	DALLAS	获取价格	High Precision 1-Wire Digital Thermometer
DS18S20Z	MAXIM	获取价格	Serial Switch/Digital Sensor, 9 Bit(s), 0.50Cel, Rectangular, 8 Pin, Surface Mount, SOP-8
DS18S20Z/T&R	MAXIM	获取价格	Serial Switch/Digital Sensor, 9 Bit(s), 0.50Cel, Rectangular, 8 Pin, Surface Mount, SOP-8
DS18S20Z+	MAXIM	获取价格	Serial Switch/Digital Sensor, 9 Bit(s), 0.50Cel, Rectangular, 8 Pin, Surface Mount, ROHS C
DS18S20Z+T&R	MAXIM	获取价格	Serial Switch/Digital Sensor, 9 Bit(s), 0.50Cel, Rectangular, 8 Pin, Surface Mount, ROHS C
DS18VN6FF100	BANNER	获取价格	DS18 Series Sensors
DS18VN6FF50	BANNER	获取价格	DS18 Series Sensors
DS18VN6LP	BANNER	获取价格	DS18 Series Sensors

与DS18S20-PAR相关文章

TIP42C资料手册解读：参数分析、产品特性
2024-06-14

1
NE5532P芯片资料：引脚说明、电气参数及替换型号推荐
2024-06-13

6
解读MMBT5401数据手册：电气参数及替换型号推荐
2024-06-13

4
深入解读BAV70数据手册：特性、电气参数及替换型号推荐
2024-06-13

4

产品中心

服务支持

精选活动

关于我们

帮助中心

DS18S20-PAR

DS18S20-PAR 数据手册

与DS18S20-PAR相关器件

与DS18S20-PAR相关文章

您还可以找

产品中心

服务支持

精选活动

关于我们

帮助中心

DS18S20-PAR

DS18S20-PAR 数据手册

与DS18S20-PAR相关器件

与DS18S20-PAR相关文章

您还可以找

您在本页遇到什么问题？