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參數(shù)資料
| 型號： | DS2432 |
| 廠商： | Maxim Integrated Products, Inc. |
| 元件分類： | DRAM |
| 英文描述： | 1k-Bit Protected 1-Wire EEPROM with SHA-1 Engine(1K 位具有寫保護的1線EEPROM（帶SHA-1引擎）) |
| 中文描述： | 1Kb、保護型1-Wire EEPROM，帶有SHA-1引擎 |
| 文件頁數(shù)： | 28/30頁 |
| 文件大?。?/td> | 165K |
| 代理商： | DS2432 |
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PRELIMINARY
With the Read Scratchpad command the CRC is generated by first clearing the CRC generator and then
shifting in the command code, the Target Addresses TA1 and TA2, the E/S byte, and the scratchpad data,
which may have been modified by the DS2432 (see Write Scratchpad command). The DS2432 will
transmit this CRC only if the reading continues through the end of the scratchpad.
DS2432
28 of 30
With the Read Authenticated Page command the 16-bit CRC value is the result of shifting the command
byte into the cleared CRC generator, followed by the two address bytes, the data bytes, and the FFh byte.
The CRC that follows the Message Authentication Code (MAC) results from clearing the CRC generator
and then shifting in the 160-bit MAC in the same bit sequence as the master receives it.
For more details on generating CRC values including example implementations in both hardware and
software, see the “Book of DS19xx iButton Standards”.
CRC-16 HARDWARE DESCRIPTION AND POLYNOMIAL
Figure 12
Polynomial = X
16
+ X
15
+ X
2
+ 1
X
0
X
1
X
2
X
3
X
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X
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X
6
X
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12
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X
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X
16
1
st
STAGE
2
nd
STAGE
3
rd
STAGE
4
th
STAGE
6
th
STAGE
5
th
STAGE
7
th
STAGE
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th
STAGE
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th
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th
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STAGE
INPUT DATA
CRC
OUTPUT
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| DS2433 | 4k-Bit 1-Wire EEPROM |
| DS2433-Z01 | 4K-Bit 1-Wire EEPROM |
| DS2433S | 4k-Bit 1-Wire EEPROM |
| DS2433T | 4k-Bit 1-Wire EEPROM |
| DS2433X | 4k-Bit 1-Wire EEPROM |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS2432_12 | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:1Kb Protected 1-Wire EEPROM with SHA-1 Engine |
| DS2432P | 功能描述:電可擦除可編程只讀存儲器 RoHS:否 制造商:Atmel 存儲容量:2 Kbit 組織:256 B x 8 數(shù)據(jù)保留:100 yr 最大時鐘頻率:1000 KHz 最大工作電流:6 uA 工作電源電壓:1.7 V to 5.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 |
| DS2432P R | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:1Kb Protected 1-Wire EEPROM with SHA-1 Engine |
| DS2432P T | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:1Kb Protected 1-Wire EEPROM with SHA-1 Engine |
| DS2432P/T&R | 功能描述:電可擦除可編程只讀存儲器 RoHS:否 制造商:Atmel 存儲容量:2 Kbit 組織:256 B x 8 數(shù)據(jù)保留:100 yr 最大時鐘頻率:1000 KHz 最大工作電流:6 uA 工作電源電壓:1.7 V to 5.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 |
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