Datasheet > 传感器/换能器 > 温度传感器> DS1721S/T&R

DS1721S/T&R

更新时间： 2024-02-27 08:58:01

品牌	Logo	应用领域
美信 - MAXIM		传感器换能器输出元件监控
页数	文件大小	规格书
17页	269K
描述
Serial Switch/Digital Sensor, 12 Bit(s), 1Cel, Rectangular, 8 Pin, Surface Mount, 0.150 INCH, SOIC-8

阅读下载

中文翻译

获取价格

技术参数
数据手册
替代型号

如果您发现信息不准确，欢迎纠错

DS1721S/T&R 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：	TSSOP8,.19
Reach Compliance Code：	compliant	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	Factory Lead Time：	6 weeks
风险等级：	1.36	最大精度（摄氏度）：	1 Cel
主体宽度：	3 mm	主体高度：	1.1 mm
主体长度或直径：	3 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：	1.25 mA	最高工作温度：	125 °C
最低工作温度：	-55 °C	输出接口类型：	2-WIRE INTERFACE
封装主体材料：	PLASTIC/EPOXY	封装等效代码：	TSSOP8,.19
封装形状/形式：	SQUARE	电源：	3/5 V
传感器/换能器类型：	TEMPERATURE SENSOR,SWITCH/DIGITAL OUTPUT,SERIAL	子类别：	Other Sensors
最大供电电压：	5.5 V	最小供电电压：	2.7 V
表面贴装：	YES	端子面层：	Matte Tin (Sn)
端接类型：	SOLDER	Base Number Matches：	1

DS1721S/T&R 数据手册

DS1721

SLAVE ADDRESS

A control byte is the 1^stbyte received following the START condition from the master device. The

control byte consists of a 4-bit control code; for the DS1721, this is set as 1001 binary for read and write

operations. The next 3 bits of the control byte are the device select bits (A2, A1, A0). They are used by

the master device to select which of eight devices are to be accessed. The set bits are in effect the 3 least

significant bits of the slave address. The last bit of the control byte (R/ W ) defines the operation to be

performed. When set to a 1 a read operation is selected, and when set to a 0 a write operation is selected.

Following the START condition, the DS1721 monitors the SDA bus checking the device type identifier

being transmitted. Upon receiving the 1001 code and appropriate device select bits, the slave device

outputs an acknowledge signal on the SDA line.

COMMAND SET

Data and control information is read from and written to the DS1721 in the format shown in Figure 6. To

write to the DS1721, the master will issue the slave address of the DS1721 and the R/ W bit will be set to

"0". After receiving an acknowledge, the bus master provides a command protocol. After receiving this

protocol, the DS1721 will issue an acknowledge and the master may send data to the DS1721. If the

DS1721 is to be read, the master must send the command protocol as before then issue a repeated START

condition and the control byte again, this time with the R/ W bit set to "1" to allow reading of the data

from the DS1721. The command set for the DS1721 as shown in Table 4 is as follows:

Read Temperature [AAh]

This command reads the last temperature conversion result from the Thermometer Register in the format

described in the “OPERATION-Measuring Temperature” section. If one’s application can accept

thermometer resolution of only 1.0°C, the master only must read the first data byte and follow with a

NACK and STOP. For higher resolution, both bytes must be read.

Access TH [A1h]

If R/ W is "0", this command writes to the TH register. After issuing this command, the next 2 bytes

written to the DS1721, in the format described for thermostat set-points, will set the high temperature

threshold for operation of the TOUT output. If R/ W is "1", the value stored in this register is read back.

Access TL [A2h]

If R/ W is "0", this command writes to the TL register. After issuing this command, the next 2 bytes

written to the DS1721, in the format described for thermostat set-points, will set the high temperature

threshold for operation of the TOUT output. If R/ W is "1", the value stored in this register is read back.

Access Config [ACh]

If R/ W is "0", this command writes to the configuration register. After issuing this command, the next

data byte value is to be written into the configuration register. If R/ W is "1", the next data byte read is the

value stored in the configuration register.

Start Convert T [51h]

This command begins a temperature conversion. No further data is required. In one-shot mode, the

temperature conversion will be performed and stored and then the DS1721 will remain idle. In continuous

mode, this command will initiate continuous conversions.

10 of 17

1...7 8 91011 12 13...17

中文翻译

下载PDF

DS1721S/T&R 替代型号

型号	品牌	替代类型	描述	数据表
DS1721S	MAXIM	类似代替	2-Wire Digital Thermometer and Thermostat

与DS1721S/T&R相关器件

型号	品牌	获取价格	描述	数据表
DS1721S/T&R+W	MAXIM	获取价格	Serial Switch/Digital Sensor,
DS1721S/T,R	MAXIM	获取价格	2-Wire Digital Thermometer and Thermostat
DS1721S+	MAXIM	获取价格	Serial Switch/Digital Sensor, 12 Bit(s), 1Cel, Rectangular, 8 Pin, Surface Mount, 0.150 IN
DS1721S-T,R	MAXIM	获取价格	2-Wire Digital Thermometer and Thermostat
DS1721U	MAXIM	获取价格	2-Wire Digital Thermometer and Thermostat
DS1721U/T&R+W	MAXIM	获取价格	暂无描述
DS1721U/T,R	MAXIM	获取价格	2-Wire Digital Thermometer and Thermostat
DS1721U+T&R	MAXIM	获取价格	Serial Switch/Digital Sensor, 12 Bit(s), 1Cel, Square, 8 Pin, Surface Mount, LEAD FREE, US
DS1721U-T,R	MAXIM	获取价格	2-Wire Digital Thermometer and Thermostat
DS1722	MAXIM	获取价格	Digital Thermometer with SPI/3-Wire Interface

与DS1721S/T&R相关文章

霍尔元件的工作原理及组成部分详解
2024-06-11

2
解读NE555P资料手册：电气参数、引脚功能及替换型号推荐
2024-06-11

2
AO3415资料解读：电气参数、替换型号推荐
2024-06-11

3
电阻上的数字意义及电阻值辨别方法
2024-06-11

4

产品中心

服务支持

精选活动

关于我们

帮助中心

DS1721S/T&R

DS1721S/T&R 技术参数

DS1721S/T&R 数据手册

DS1721S/T&R 替代型号

与DS1721S/T&R相关器件

与DS1721S/T&R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

DS1721S/T&R

DS1721S/T&R 技术参数

DS1721S/T&R 数据手册

DS1721S/T&R 替代型号

与DS1721S/T&R相关器件

与DS1721S/T&R相关文章

您还可以找

您在本页遇到什么问题？