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DS2431 PDF预览

DS2431

更新时间: 2024-01-11 14:42:16
品牌 Logo 应用领域
美信 - MAXIM 可编程只读存储器电动程控只读存储器电可擦编程只读存储器
页数 文件大小 规格书
24页 308K
描述
1024-Bit 1-Wire EEPROM

DS2431 技术参数

是否无铅:不含铅是否Rohs认证:符合
生命周期:Active零件包装代码:BGA
包装说明:VFBGA, BGA6,2X3,40/20针数:6
Reach Compliance Code:compliantECCN代码:EAR99
HTS代码:8542.32.00.51Factory Lead Time:6 weeks
风险等级:1.46Samacsys Confidence:4
Samacsys Status:Released2D Presentation:https://componentsearchengine.com/2D/0T/349437.1.1.png
Schematic Symbol:https://componentsearchengine.com/symbol.php?partID=349437PCB Footprint:https://componentsearchengine.com/footprint.php?partID=349437
3D View:https://componentsearchengine.com/viewer/3D.php?partID=349437Samacsys PartID:349437
Samacsys Image:https://componentsearchengine.com/Images/9/DS2431X-S+.jpgSamacsys Thumbnail Image:https://componentsearchengine.com/Thumbnails/1/DS2431X-S+.jpg
Samacsys Pin Count:6Samacsys Part Category:Integrated Circuit
Samacsys Package Category:BGASamacsys Footprint Name:21-0376
Samacsys Released Date:2018-05-14 08:14:26Is Samacsys:N
其他特性:MEMORY ORGANIZED AS FOUR PAGES OF 256 BITS; SEATED HT-CALCULATED数据保留时间-最小值:40
耐久性:50000 Write/Erase CyclesJESD-30 代码:S-PBGA-B6
JESD-609代码:e1长度:1.68 mm
内存密度:1024 bit内存集成电路类型:EEPROM
内存宽度:1湿度敏感等级:1
功能数量:1端子数量:6
字数:1024 words字数代码:1000
工作模式:ASYNCHRONOUS最高工作温度:85 °C
最低工作温度:-40 °C组织:1KX1
封装主体材料:PLASTIC/EPOXY封装代码:VFBGA
封装等效代码:BGA6,2X3,40/20封装形状:SQUARE
封装形式:GRID ARRAY, VERY THIN PROFILE, FINE PITCH并行/串行:SERIAL
峰值回流温度(摄氏度):260电源:3/5 V
认证状态:Not Qualified座面最大高度:0.98 mm
串行总线类型:1-WIRE子类别:EEPROMs
最大供电电压 (Vsup):5.25 V最小供电电压 (Vsup):2.8 V
表面贴装:YES技术:CMOS
温度等级:INDUSTRIAL端子面层:Tin/Silver/Copper (Sn/Ag/Cu)
端子形式:BALL端子节距:0.5 mm
端子位置:BOTTOM处于峰值回流温度下的最长时间:30
宽度:1.68 mmBase Number Matches:1

DS2431 数据手册

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DS2431: 1024-Bit, 1-Wire EEPROM  
Figure 2. Hierarchical Structure for 1-Wire Protocol  
Available  
Data Field  
Commands:  
Affected:  
DS2431 Command Level:  
Read ROM  
Match ROM  
Search ROM  
Skip ROM  
64-bit Reg. #, RC-Flag  
64-bit Reg. #, RC-Flag  
64-bit Reg. #, RC-Flag  
RC-Flag  
1-Wire ROM Function  
Commands (see Figure 9)  
Resume  
RC-Flag  
Overdrive Skip  
Overdrive Match  
RC-Flag, OD-Flag  
64-bit Reg. #, RC-Flag, OD-Flag  
Write Scratchpad  
Read Scratchpad  
Copy Scratchpad  
Read Memory  
64-bit Scratchpad, Flags  
64-bit Scratchpad  
Data Memory, Register Page  
Data Memory, Register Page  
DS2431-specific  
Memory Function  
Commands (see Figure 7)  
64-BIT LASERED ROM  
Each DS2431 contains a unique ROM code that is 64 bits long. The first 8 bits are a 1-Wire family code. The next  
48 bits are a unique serial number. The last 8 bits are a CRC (Cyclic Redundancy Check) of the first 56 bits. See  
Figure 3 for details. 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 X8 + X5 + X4 + 1. Additional information about the Dallas 1-Wire  
CRC is available in Application Note 27.  
The shift register bits are initialized to 0. Then starting with the least significant bit of the family code, one bit at a  
time is shifted in. After the 8th bit of the family code has been entered, then the serial number is entered. After the  
last bit of the serial number has been entered, the shift register contains the CRC value. Shifting in the 8 bits of the  
CRC returns the shift register to all 0s.  
Figure 3. 64-Bit Lasered ROM  
MSB  
LSB  
8-Bit Family  
8-Bit  
CRC Code  
48-Bit Serial Number  
Code (2Dh)  
MSB LSB  
MSB  
LSB MSB LSB  
Figure 4. 1-Wire CRC Generator  
Polynomial = X8 + X5 + X4 + 1  
1st  
2nd  
3rd  
4th  
5th  
6th  
7th  
8th  
STAGE STAGE  
STAGE STAGE  
STAGE  
STAGE STAGE STAGE  
X0  
X1  
X2  
X3  
X4  
X5  
X6 X7  
INPUT DATA  
X8  
5 of 24  

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