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參數(shù)資料
| 型號： | DS2432X |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | Programmable ROM |
| 英文描述： | 1K X 1 1-WIRE SERIAL EEPROM, PBGA6 |
| 封裝： | UCSP-8 |
| 文件頁數(shù)： | 10/16頁 |
| 文件大?。?/td> | 168K |
| 代理商： | DS2432X |
Abridged Data Sheet
DS2432
3 of 14
64-BIT LASERED ROM
Each DS2432 contains a unique ROM code that is 64 bits long. The first eight bits are a 1-Wire family
code. The next 48 bits are a unique serial number. The last eight bits are a CRC of the first 56 bits. (See
Figure 3). The 1-Wire CRC is generated using a polynomial generator consisting of a shift register and
XOR gates as shown in Figure 4. The polynomial is X
8 + X5 + X4 + 1. Additional information about the
Dallas 1-Wire Cyclic Redundancy Check is available in the Book of DS19xx iButton Standards from
Dallas Semiconductor. The shift register bits are initialized to zero. Then starting with the least significant
bit of the family code, one bit at a time is shifted in. After the 8
th bit of the family code has been entered,
then the serial number is entered. After the 48
th bit of the serial number has been entered, the shift register
contains the CRC value. Shifting in the eight bits of CRC should return the shift register to all zeros.
HIERARCHCAL STRUCTURE FOR 1-WIRE PROTOCOL Figure 2
1-Wire net
Other
Devices
BUS
Master
DS2432
Available
Commands:
Command
Level:
Data Field
Affected:
1-Wire ROM Function
Commands (see Figure 9)
DS2432-specific
Memory Function
Commands (see Figure 7)
Read ROM
Match ROM
Search ROM
Skip ROM
Resume
Overdrive Skip
Overdrive Match
64-bit Reg. #, RC-Flag
RC-Flag
64-bit Reg. #, RC-Flag, OD-Flag
For details see the full
version of the data sheet.
64-BIT LASERED ROM Figure 3
MSB
LSB
8-Bit CRC Code
48-Bit Serial Number
8-Bit Family Code
*
MSB
LSB
MSB
LSB
MSB
LSB
* For the actual Family Code value refer to the full version of the data sheet.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| DS2432P | 1K X 1 1-WIRE SERIAL EEPROM, PDSO6 |
| DS2433 | 512 X 8 1-WIRE SERIAL EEPROM, PBCY3 |
| DS2433X | 4K X 1 1-WIRE SERIAL EEPROM, UUC2 |
| DS2433S | 512 X 8 1-WIRE SERIAL EEPROM, PDSO8 |
| DS2434S | SPECIALTY MEMORY CIRCUIT, PDSO16 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS2432X+ | 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 |
| DS2432X+U | 制造商:Maxim Integrated Products 功能描述:1-W EEPROM 1KB W/SHA-1 UCSP PARTIAL - Rail/Tube |
| DS2432X-101-4D+T | 制造商:Maxim Integrated Products 功能描述:1KB PROTECTED 1-WIRE EEPROM WITH SHA-1 ENGINE - Tape and Reel |
| DS2432X-S | 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 |
| DS2432X-S+ | 制造商:Maxim Integrated Products 功能描述:1-W EEPROM 1KB W/SHA-1 UCSP 2.5K TR - Tape and Reel |
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