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參數(shù)資料
| 型號： | DS2890X |
| 元件分類： | 數(shù)字電位計 |
| 英文描述： | 1-Wire Digital Potentiometer |
| 中文描述： | 1 - Wire數(shù)字電位器 |
| 文件頁數(shù)： | 10/27頁 |
| 文件大小： | 939K |
| 代理商： | DS2890X |
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DS2890
10 of 27
Figure 9.
DS2890 TO-92 CONFIGURATION BLOCK DIAGRAM
64-BIT LASTERED ROM
Each DS2890 contains a unique ROM registration number that is 64 bits long; the format of this value is
shown in Figure 10. The first 8 bits are a 1-Wire family code; the family code for the DS2890 and future
1-Wire Potentiometers is 2Ch.. The next 48 bits are a unique serial number that is administered by Dallas
Semiconductor. The last 8 bits are a CRC of the first 56 bits. The 1-Wire CRC is generated using a
polynomial generator consisting of a shift register and XOR gates as shown in Figure 11. Operationally,
the CRC generator works as follows: The shift register bits are first initialized to zero. Then starting with
the least significant bit, the 8-bit family code is shifted in. After the 8th bit of the family code has been
entered, the 48-bit serial number is shifted in. After shifting in the 48th bit of the serial number the shift
register contains the CRC value. Shifting in the 8 bits of CRC should return the shift register to an all
zeros value. Detailed information about the Dallas 1-Wire Cyclic Redundancy Check is available in the
Book of DS19xx iButton Standards. The 64-bit ROM and the 1-Wire Function Controller portions of the
DS2890 allow the device to operate as a 1-Wire device and follow the protocol detailed in the section
“TRANSACTION SEQUENCE”.
Figure 10.
64-BIT LASERED ROM
MSB
LSB
8-Bit CRC Code
48-Bit Serial Number
8-Bit Family Code (2Ch)
MSB
LSB
MSB
LSB
MSB
LSB
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS2890X-000 | 功能描述:IC POT DIGITAL 1-WIRE 100K CSP RoHS:否 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 數(shù)字電位器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:- 接片:32 電阻（歐姆）:50k 電路數(shù):1 溫度系數(shù):標(biāo)準(zhǔn)值 50 ppm/°C 存儲器類型:易失 接口:3 線串行（芯片選擇，遞增，增/減） 電源電壓:2.7 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:SOT-23-6 細(xì)型，TSOT-23-6 供應(yīng)商設(shè)備封裝:TSOT-23-6 包裝:帶卷 (TR) |
| DS28CM00 | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:IC/SMBus Silicon Serial Number |
| DS28CM00EVKIT | 制造商:Maxim Integrated Products 功能描述:DS28CM00 EV-BOARD W/ MAXQ BOARD - Rail/Tube |
| DS28CM00R-A00+T | 功能描述:序列號注冊 I2C/SMBus Silicon Serial Number RoHS:否 制造商:Maxim Integrated 數(shù)據(jù)總線寬度: 電源電壓-最大: 電源電壓-最小: 最大工作溫度: 最小工作溫度: 安裝風(fēng)格: 封裝 / 箱體: |
| DS28CM00R-A00+U | 制造商:Maxim Integrated Products 功能描述:SMBUS SILICON SERIAL NUMBER 制造商:Maxim Integrated Products 功能描述:SMBUS INTRFC 5PIN SOT-23 - Rail/Tube 制造商:Maxim Integrated Products 功能描述:SILICON SERIAL NUMBER, 5-SOT23 制造商:Maxim Integrated Products 功能描述:SILICON SERIAL NUMBER, 5-SOT23, IC Function:Silicon Serial Number IC, Brief Feat |
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