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參數(shù)資料
| 型號： | DS2433Y |
| 英文描述： | 4k-Bit 1-Wire EEPROM |
| 中文描述： | 4K的位的1 - Wire的EEPROM |
| 文件頁數(shù)： | 17/19頁 |
| 文件大小： | 588K |
| 代理商： | DS2433Y |
DS2433
17 of 19
value from the first 56 bits of the 64-bit ROM and compare it to the value stored within the DS2433 to
determine if the ROM data has been received error-free by the bus master. The equivalent polynomial
function of this CRC is: X
8
+ X
5
+ X
4
+ 1. This 8-bit CRC is received in the true (non-inverted) form when
reading the ROM of the DS2433. It is computed at the factory and lasered into the ROM.
The other CRC is a 16-bit type, generated according to the standardized CRC16-polynomial function x
16
+
x
15
+x
2
+ 1. This CRC is used for fast verification of a data transfer when writing to the scratchpad. It is
the same type of CRC as is used with NV RAM based iButtons for error detection within the iButton
Extended File Structure. In contrast to the 8-bit CRC, the 16-bit CRC is always returned or sent in the
complemented (inverted) form. A CRC-generator inside the DS2433 chip (Figure 12) will calculate a
new 16-bit CRC as shown in the command flow chart of Figure 7. The bus master compares the CRC
value read from the device to the one it calculates from the data and decides whether to continue with an
operation.
With the Write 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 and all the data bytes. The DS2433
will transmit this CRC only if the data bytes written to the scratchpad include scratchpad ending offset
11111b. The data may start at any location within the scratchpad.
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)
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| DS2434 | Battery Identification Chip |
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| DS2436 | Battery ID/Monitor Chip |
| DS2436Z | Battery ID/Monitor Chip |
| DS2437S | IC-SM-BATT MONITOR |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS2433Y-Z01 | 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:4K-Bit 1-Wire EEPROM |
| DS2433Y-Z01/T&R | 制造商:Maxim Integrated Products 功能描述:IC EEPROM 4KBIT 8SOIC |
| DS2433Y-Z01/T&R | 功能描述:IC EEPROM 4KBIT 8SOIC RoHS:否 類別:集成電路 (IC) >> 存儲器 系列:- 標(biāo)準(zhǔn)包裝:150 系列:- 格式 - 存儲器:EEPROMs - 串行 存儲器類型:EEPROM 存儲容量:4K (2 x 256 x 8) 速度:400kHz 接口:I²C，2 線串口 電源電壓:2.5 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 封裝/外殼:8-VFDFN 裸露焊盤 供應(yīng)商設(shè)備封裝:8-DFN（2x3） 包裝:管件 產(chǎn)品目錄頁面:1445 (CN2011-ZH PDF) |
| DS2433-Z01 | 功能描述:IC EEPROM 4KBIT TO92-3 RoHS:否 類別:集成電路 (IC) >> 存儲器 系列:- 標(biāo)準(zhǔn)包裝:150 系列:- 格式 - 存儲器:EEPROMs - 串行 存儲器類型:EEPROM 存儲容量:4K (2 x 256 x 8) 速度:400kHz 接口:I²C，2 線串口 電源電壓:2.5 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 封裝/外殼:8-VFDFN 裸露焊盤 供應(yīng)商設(shè)備封裝:8-DFN（2x3） 包裝:管件 產(chǎn)品目錄頁面:1445 (CN2011-ZH PDF) |
| DS2434 | 功能描述:電池管理 RoHS:否 制造商:Texas Instruments 電池類型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel |
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