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參數(shù)資料
| 型號： | DS2760X |
| 英文描述： | High Precision Li-Ion Battery Monitor |
| 中文描述： | 高精度鋰離子電池監(jiān)視器 |
| 文件頁數(shù)： | 14/25頁 |
| 文件大?。?/td> | 126K |
| 代理商： | DS2760X |
DS2760
14 of 25
1-WIRE BUS SYSTEM
The 1-Wire bus is a system which has a single bus master and one or more slaves. A multi-drop bus is a
1-Wire bus with multiple slaves. A single-drop bus has only one slave device. In all instances, the
DS2760 is a slave device. The bus master is typically a microprocessor in the host system. The
discussion of this bus system consists of four topics: 64-Bit Net Address, Hardware Configuration,
Transaction Sequence, and 1-Wire Signaling.
64-BIT NET ADDRESS
Each DS2760 has a unique, factory-programmed 1-Wire net address which is 64 bits in length. The first
8 bits are the 1-Wire family code (30h for DS2760). The next 48 bits are a unique serial number. The
last 8 bits are a CRC of the first 56 bits (see Figure 13). The 64-bit net address and the 1-Wire I/O
circuitry built into the device enable the DS2760 to communicate via the 1-Wire protocol detailed in the
1-Wire Bus System section of this datasheet.
1-WIRE NET ADDRESS FORMAT –
Figure 13
8-bit CRC
48-bit Serial Number
8-Bit Family
Code (30h)
MSb
LSb
CRC GENERATION
The DS2760 has an 8-bit CRC stored in the most significant byte of its 1-Wire net address. To ensure
error-free transmission of the address, the host system can compute a CRC value from the first 56 bits of
the address and compare it to the CRC from the DS2760. The host system is responsible for verifying the
CRC value and taking action as a result. The DS2760 does not compare CRC values and does not
prevent a command sequence from proceeding as a result of a CRC mismatch. Proper use of the CRC
can result in a communication channel with a very high level of integrity.
The CRC can be generated by the host using a circuit consisting of a shift register and XOR gates as
shown in Figure 10, or it can be generated in software. Additional information about the Dallas 1-Wire
Cyclic Redundancy Check is available in Application Note 27 entitled “Understanding and Using Cyclic
Redundancy Checks with Dallas Semiconductor Touch Memory Products”.
In the circuit in Figure 14, 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 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.
相關PDF資料 |
PDF描述 |
|---|---|
| DS2760XA | High Precision Li-Ion Battery Monitor |
| DS2770 | Battery Monitor and Charge Controller |
| DS2770AE | Battery Monitor and Charge Controller |
| DS2770AE-025 | Battery Monitor and Charge Controller |
| DS2770BE | Battery Monitor and Charge Controller |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| DS2760X-025 | 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:High Precision Li-Ion Battery Monitor |
| DS2760XA | 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:High Precision Li-Ion Battery Monitor |
| DS2760XA-025 | 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:High Precision Li-Ion Battery Monitor |
| DS2761 | 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:High-Precision Li+ Battery Monitor |
| DS2761AE | 功能描述:IC MON BATT LI-ION HP 16-TSSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 電池管理 系列:- 標準包裝:1 系列:- 功能:充電管理 電池化學:鋰離子（Li-Ion）、鋰聚合物（Li-Pol） 電源電壓:3.75 V ~ 6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:SC-74A，SOT-753 供應商設備封裝:SOT-23-5 包裝:剪切帶 (CT) 產(chǎn)品目錄頁面:669 (CN2011-ZH PDF) 其它名稱:MCP73831T-2ACI/OTCT |
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