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參數(shù)資料
| 型號(hào)： | DS1822-PAR+T&R |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | Switch/Digital Output Temperature Sensor |
| 英文描述： | DIGITAL TEMP SENSOR-SERIAL, 12BIT(s), 2Cel, RECTANGULAR, THROUGH HOLE MOUNT |
| 封裝： | TO-92, 3 PIN |
| 文件頁數(shù)： | 15/19頁 |
| 文件大?。?/td> | 206K |
| 代理商： | DS1822-PAR+T&R |
DS1822-PAR
5 of 19
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)
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 (TH and TL) and
configuration register. Note that if the DS1822-PAR alarm function is not used, the TH and TL 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)
EEPROM
byte 2
TH Register or User Byte 1*
TH Register or User Byte 1
byte 3
TL Register or User Byte 2*
TL Register or User Byte 2
byte 4
Configuration Register*
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 TH and TL 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.
MSB
LSB
MSB
(85°C)
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| DS1822-PAR/T&R | DIGITAL TEMP SENSOR-SERIAL, 12BIT(s), 2Cel, RECTANGULAR, THROUGH HOLE MOUNT |
| DS1822-PAR | DIGITAL TEMP SENSOR-SERIAL, 12BIT(s), 0.20Cel, ROUND, THROUGH HOLE MOUNT |
| DS1822Z/T&R | DIGITAL TEMP SENSOR-SERIAL, 12BIT(s), 2Cel, RECTANGULAR, SURFACE MOUNT |
| DS1822/T&R | DIGITAL TEMP SENSOR-SERIAL, 12BIT(s), 2Cel, RECTANGULAR, THROUGH HOLE MOUNT |
| DS1822 | DIGITAL TEMP SENSOR-SERIAL, 12BIT(s), 2Cel, RECTANGULAR, THROUGH HOLE MOUNT |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS-18-22-RS | 制造商:TE Connectivity 功能描述:Red sealed splice terminal,0.5-1.5sq.mm |
| DS1822-W | 制造商:Maxim Integrated Products 功能描述:1-WIRE DIGITAL THERMOMETER SOIC - Rail/Tube |
| DS1822Z | 功能描述:板上安裝溫度傳感器 RoHS:否 制造商:Omron Electronics 輸出類型:Digital 配置: 準(zhǔn)確性:+/- 1.5 C, +/- 3 C 溫度閾值: 數(shù)字輸出 - 總線接口:2-Wire, I2C, SMBus 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 最大工作溫度:+ 50 C 最小工作溫度:0 C 關(guān)閉: 安裝風(fēng)格: 封裝 / 箱體: 設(shè)備功能:Temperature and Humidity Sensor |
| DS1822Z/T | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Econo 1-Wire Digital Thermometer |
| DS1822Z/T&R | 制造商:Maxim Integrated Products 功能描述:1-WIRE DIGITAL THERMOMETER SOIC T&R - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC THERMOMETER ECONO DIG 8-SOIC |
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