DS1825U+

更新时间： 2024-02-06 09:00:41

品牌	Logo	应用领域
美信 - MAXIM		模拟IC 信号电路光电二极管
页数	文件大小	规格书
21页	286K
描述
Programmable Resolution 1-Wire Digital Thermometer With 4-Bit ID

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技术参数
数据手册

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DS1825U+ 技术参数

是否无铅：	不含铅	是否Rohs认证：	符合
生命周期：	Active	零件包装代码：	SOIC
包装说明：	TSSOP,	针数：	8
Reach Compliance Code：	compliant	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	Factory Lead Time：	6 weeks
风险等级：	0.94	Samacsys Description：	Board Mount Temperature Sensors Programmable Resolution 1-Wire Digital Thermometer With 4-Bit ID
模拟集成电路 - 其他类型：	ANALOG CIRCUIT	JESD-30 代码：	S-PDSO-G8
JESD-609代码：	e3	长度：	3 mm
湿度敏感等级：	1	功能数量：	1
端子数量：	8	最高工作温度：	125 °C
最低工作温度：	-55 °C	封装主体材料：	PLASTIC/EPOXY
封装代码：	TSSOP	封装形状：	SQUARE
封装形式：	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	峰值回流温度（摄氏度）：	260
认证状态：	Not Qualified	座面最大高度：	1.1 mm
最大供电电压 (Vsup)：	3.7 V	最小供电电压 (Vsup)：	3 V
表面贴装：	YES	温度等级：	MILITARY
端子面层：	Matte Tin (Sn)	端子形式：	GULL WING
端子节距：	0.65 mm	端子位置：	DUAL
处于峰值回流温度下的最长时间：	30	宽度：	3 mm

DS1825U+ 数据手册

DS1825 Programmable Resolution 1-Wire Digital Thermometer With 4-Bit ID

Figure 4. SUPPLYING THE PARASITE-POWERED DS1825 DURING

TEMPERATURE CONVERSIONS

V_PU

DS1825

GND

DQ V_DD

V_PU

Micro-

processor

4.7K

To Other

1-Wire Bus

1-Wire Devices

Figure 5. POWERING THE DS1825 WITH AN EXTERNAL SUPPLY

V_DD(External Supply)

DS1825

V_PU

4.7K

Micro-

GND

DQ V_DD

processor

To Other

1-Wire Devices

1-Wire Bus

64-BIT LASERED ROM CODE

Each DS1825 contains a unique 64-bit code (see Figure 6) stored in ROM. The least significant 8 bits of the ROM

code contain the DS1825’s 1-Wire family code: 3Bh. The next 48 bits contain a unique serial number. The most

significant 8 bits contain a cyclic redundancy check (CRC) byte that is calculated from the first 56 bits of the ROM

code. A detailed explanation of the CRC bits is provided in the CRC GENERATION section. The 64-bit ROM code

and associated ROM function control logic allow the DS1825 to operate as a 1-Wire device using the protocol

detailed in the 1-Wire BUS SYSTEM section of this data sheet.

Figure 6. 64-BIT LASERED ROM CODE

8-BIT CRC

48-BIT SERIAL NUMBER

8-BIT FAMILY CODE (3Bh)

MSB LSB

MSB

LSB MSB

LSB

MEMORY

The DS1825’s memory is organized as shown in Figure 7. The memory consists of an SRAM scratchpad with NV

EEPROM storage for the high and low alarm trigger registers (T_Hand T_L) and configuration register. Note that if the

DS1825 alarm function is not used, the T_Hand T_Lregisters can serve as general-purpose memory. All memory

commands are described in detail in the DS1825 FUNCTION COMMANDS section.

Byte 0 and byte 1 of the scratchpad contain the LSB and the MSB of the temperature register, respectively. These

bytes are read-only. Bytes 2 and 3 provide access to T_Hand T_Lregisters. Byte 4 contains the configuration register

data, which is explained in detail in the CONFIGURATION REGISTER section of this data sheet. Bytes 5, 6, and 7

are reserved for internal use by the device and cannot be overwritten.

7 of 21

1...4 5 678 9 10...21

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与DS1825U+相关器件

型号	品牌	描述	获取价格	数据表
DS1825U+TR	MAXIM	Programmable Resolution 1-Wire Digital Thermometer With 4-Bit ID	获取价格
DS1825UTR	MAXIM	Programmable Resolution 1-Wire Digital Thermometer With 4-Bit ID	获取价格
DS1830	DALLAS	Reset Sequence Pushbutton	获取价格
DS1830	MAXIM	Power Supply Support Circuit, Adjustable, 1 Channel, PDIP8,	获取价格
DS1830	ADI	顺序复位按钮	获取价格
DS1830+	MAXIM	Power Supply Support Circuit, Fixed, 1 Channel, PDIP8, 0.300 INCH, DIP-8	获取价格

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