DS1825U+

更新时间： 2024-02-09 06:12:55

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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中文翻译

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技术参数
数据手册
替代型号

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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

Byte 8 of the scratchpad is read-only and contains the cyclic redundancy check (CRC) code for bytes 0 through 7

of the scratchpad. The DS1825 generates this CRC using the method described in the CRC GENERATION

section.

Data is written to bytes 2, 3, and 4 of the scratchpad using the Write Scratchpad [4Eh] command; the data must be

transmitted to the DS1825 starting with the least significant bit of byte 2. To verify data integrity, the scratchpad can

be read (using the Read Scratchpad [BEh] command) after the data is written. When reading the scratchpad, data

is transferred over the 1-Wire bus starting with the least significant bit of byte 0. To transfer the T_H, T_L, and

configuration data from the scratchpad to EEPROM, the master must issue the Copy Scratchpad [48h] command.

Data in the EEPROM registers is retained when the device is powered down; at power-up the EEPROM data

(including the hard-wired address inputs AD0-AD3)is reloaded into the corresponding scratchpad locations. Data

can also be reloaded from EEPROM to the scratchpad at any time using the Recall E²[B8h] command. The master

can issue read time slots following the Recall E²command and the DS1825 will indicate the status of the recall by

transmitting 0 while the recall is in progress and 1 when the recall is done.

Figure 7. DS1825 MEMORY MAP

SCRATCHPAD (Power-up State)

byte 0 Temperature LSB (50h)

(85°C)

byte 1 Temperature MSB (05h)

byte 2 T_HRegister or User Byte 1

byte 3 T_LRegister or User Byte 2

byte 4 Configuration Register*

byte 5 Reserved

EEPROM

T_HRegister or User Byte 1

T_LRegister or User Byte 2

Configuration Register*

byte 6 Reserved

byte 7 Reserved

byte 8 CRC

* Lower four bits of Configuration Register

are hardwired through AD0-AD3

CONFIGURATION REGISTER

Byte 4 of the scratchpad memory is the configuration register, as shown in Figure 8. The configuration register

allows the user to set the conversion resolution using the R0 and R1 bits and read the programmed value of the

address pins. The conversion resolution power-up default is R0 = 1 and R1 = 1 (12-bit resolution). Table 4 shows

the resolution configuration settings and maximum conversion time. Note that there is a direct tradeoff between

resolution and conversion time. AD0-AD3 bits report the pin programmed location information and are sampled at

power-up. In Parasite Power mode, the address pins must be connected to DQ or GND and in V_DDpowered mode,

the address pins must be connected to V_DDor GND. Pins tied to DQ/V_DDare reported with a logical 1 and pins tied

to GND are reported as a logical 0. Pins connected to DQ/ V_DDor GND through a resistor are valid logical 1s or

logical 0s if the resistor is less than 10k. Floating or high impedance (>10kꢁ) connections are indeterminate. Bit 7

and Bit 4 of the configuration register are reserved for internal use and cannot be overwritten.

Figure 8. CONFIGURATION REGISTER FORMAT

Note: Bit 0 through Bit 3 are programmed through the four Location Programming Address pins AD0-AD3.

Reading the configuration register provides location information on up to 16 individual DS1825s.

bit 7

bit 6

bit 5

bit 4

bit 3

AD3

bit 2

AD2

bit 1

AD1

bit 0

AD0

8 of 21

1...5 6 789 10 11...21

中文翻译

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DS1825U+ 替代型号

型号	品牌	替代类型	描述	数据表
DS1825U/T&R	MAXIM	类似代替	暂无描述
DS1825U	MAXIM	类似代替	Programmable Resolution 1-Wire Digital Thermometer With 4-Bit ID

与DS1825U+相关器件

型号	品牌	获取价格	描述	数据表
DS1825U+TR	MAXIM	获取价格	Programmable Resolution 1-Wire Digital Thermometer With 4-Bit ID
DS1825UTR	MAXIM	获取价格	Programmable Resolution 1-Wire Digital Thermometer With 4-Bit ID
DS1830	DALLAS	获取价格	Reset Sequence Pushbutton
DS1830	MAXIM	获取价格	Power Supply Support Circuit, Adjustable, 1 Channel, PDIP8,
DS1830	ADI	获取价格	顺序复位按钮
DS1830+	MAXIM	获取价格	Power Supply Support Circuit, Fixed, 1 Channel, PDIP8, 0.300 INCH, DIP-8
DS1830A	DALLAS	获取价格	Reset Sequence Pushbutton
DS1830A	ADI	获取价格	顺序复位按钮
DS1830A+	ROCHESTER	获取价格	1-CHANNEL POWER SUPPLY SUPPORT CKT, PDIP8, 0.300 INCH, DIP-8
DS1830A+	MAXIM	获取价格	Power Supply Support Circuit, Fixed, 1 Channel, PDIP8, 0.300 INCH, DIP-8

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