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參數(shù)資料
| 型號(hào)： | DS2890X-000 |
| 廠商： | Maxim Integrated Products |
| 文件頁(yè)數(shù)： | 2/27頁(yè) |
| 文件大?。?/td> | 0K |
| 描述： | IC POT DIGITAL 1-WIRE 100K CSP |
| 標(biāo)準(zhǔn)包裝： | 10,000 |
| 接片： | 256 |
| 電阻（歐姆）： | 100k |
| 電路數(shù)： | 1 |
| 溫度系數(shù)： | 標(biāo)準(zhǔn)值 800 ppm/°C |
| 存儲(chǔ)器類型： | 易失 |
| 接口： | 1 線 串行 |
| 電源電壓： | 2.8 V ~ 6 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 6-XBGA，F(xiàn)CBGA |
| 供應(yīng)商設(shè)備封裝： | 6-覆晶（2.82x2.54） |
| 包裝： | 帶卷 (TR) |
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DS2890
10 of 27
FIGURE 11. Typical Wiper Resistance vs Wiper Voltage at 25
oC,
Charge Pump OFF
0.1
1
10
100
02
4
6
8
10
Voltage Across Wiper (Volts)
W
iper
Resistance
(Kohms)
V
PU=2.8V
V
PU=5V
V
PU=6V
64-BIT LASTERED ROM
Each DS2890 contains a unique and unalterable lasered ROM registration number that is 64 bits long; the
format of this value is shown in Figure 12. 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
13. 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. 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 12. 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 |
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| 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(hào)注冊(cè) 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 |
| DS28CN01 | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:1Kbit IC/SMBus EEPROM with SHA-1 Engine |
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