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参数资料
| 型号： | DS1822+PAR |
| 厂商： | Maxim Integrated |
| 文件页数： | 5/19页 |
| 文件大小： | 0K |
| 描述： | IC THERMOMETER ECONO DIG TO-92 |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 1 |
| 感应温度： | -55°C ~ 125°C |
| 输出类型： | 数字 |
| 电源电压： | 3 V ~ 5 V |
| 精确度： | ±2°C |
| 封装/外壳： | TO-226-3、TO-92-3 标准主体 |
| 供应商设备封装： | TO-92-3 |
| 包装： | 管件 |
DS1822-PAR
64-BIT LASERED ROM CODE
Each DS1822-PAR contains a unique 64-bit code (see Figure 5) stored in ROM. The least significant
eight bits of the ROM code contain the DS1822-PAR’s 1-Wire family code: 22h. The next 48 bits contain
a unique serial number. The most significant eight 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 DS1822-PAR to operate as a 1-Wire device using the protocol detailed in the 1-WIRE BUS
SYSTEM section of this data sheet.
64-BIT LASERED ROM CODE Figure 5
8-BIT CRC
48-BIT SERIAL NUMBER
8-BIT FAMILY CODE (22h)
MSB
LSB
MSB
LSB
MSB
LSB
MEMORY
The DS1822-PAR’s memory is organized as shown in Figure 6. The memory consists of an SRAM
scratchpad with NV EEPROM storage for the high and low alarm trigger registers (T H and T L ) and
configuration register. Note that if the DS1822-PAR alarm function is not used, the T H and T L registers
can serve as general-purpose memory. All memory commands are described in detail in the DS1822-PAR
FUNCTION COMMANDS section.
DS1822-PAR MEMORY MAP Figure 6
SCRATCHPAD (Power-up State)
byte 0 Temperature LSB (50h)
byte 1 Temperature MSB (05h)
byte 2 T H Register or User Byte 1*
byte 3 T L Register or User Byte 2*
byte 4 Configuration Register*
(85°C)
EEPROM
T H Register or User Byte 1
T L Register or User Byte 2
Configuration Register
byte 5 Reserved (FFh)
byte 6 Reserved
byte 7 Reserved (10h)
byte 8 CRC*
* Power-up state depends on value(s) stored
in EEPROM
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 H and T L registers. 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.
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 DS1822-PAR generates this CRC using the method described in the
CRC GENERATION section.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DS1822-PAR/T&R | 功能描述:板上安装温度传感器 RoHS:否 制造商:Omron Electronics 输出类型:Digital 配置: 准确性:+/- 1.5 C, +/- 3 C 温度阈值: 数字输出 - 总线接口:2-Wire, I2C, SMBus 电源电压-最大:5.5 V 电源电压-最小:4.5 V 最大工作温度:+ 50 C 最小工作温度:0 C 关闭: 安装风格: 封装 / 箱体: 设备功能:Temperature and Humidity Sensor |
| DS1822-PAR_07 | 制造商:DALLAS 制造商全称:Dallas Semiconductor 功能描述:Econo 1-Wire Parasite-Power Digital Thermometer |
| DS1822-PAR+T&R | 制造商:Maxim Integrated Products 功能描述: 制造商:Maxim Integrated Products 功能描述:TEMP SENSOR DGTL 1-WIRE 3PIN TO-92 - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC THERMOMETER ECONO DIG TO-92 制造商:Maxim Integrated Products 功能描述:Board Mount Temperature Sensors 1-Wire Digital Thermometer |
| DS1822-PAR+T&R | 功能描述:板上安装温度传感器 1-Wire Digital Thermometer RoHS:否 制造商:Omron Electronics 输出类型:Digital 配置: 准确性:+/- 1.5 C, +/- 3 C 温度阈值: 数字输出 - 总线接口:2-Wire, I2C, SMBus 电源电压-最大:5.5 V 电源电压-最小:4.5 V 最大工作温度:+ 50 C 最小工作温度:0 C 关闭: 安装风格: 封装 / 箱体: 设备功能:Temperature and Humidity Sensor |
| DS-18-22-RS | 制造商:TE Connectivity 功能描述:Red sealed splice terminal,0.5-1.5sq.mm |
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