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参数资料
| 型号： | DS2761BX-025/T&R |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 15/24页 |
| 文件大小： | 0K |
| 描述： | IC MON BATT LI-ION HP FLIP-CHIP |
| 标准包装： | 10,000 |
| 功能： | 电池监控器 |
| 电池化学： | 锂离子（Li-Ion） |
| 电源电压： | 2.5 V ~ 5.5 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 12-UFBGA，FCBGA |
| 供应商设备封装： | 12-覆晶 |
| 包装： | 带卷 (TR) |
DS2761
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
CRC is available in Application Note 27, Understanding and Using Cyclic Redundancy Checks with
Dallas Semiconductor Touch Memory Products . (This application not can be found on the Maxim/Dallas
Semiconductor website at www.maxim-ic.com).
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 8th bit of the family code has
been entered, then the serial number is entered. After the 48th bit of the serial number has been entered,
the shift register contains the CRC value.
Figure 14. 1-WIRE CRC GENERATION BLOCK DIAGRAM
INPUT
MSb
XOR
XOR
LSb
XOR
HARDWARE CONFIGURATION
Because the 1-Wire bus has only a single line, it is important that each device on the bus be able to drive
it at the appropriate time. To facilitate this, each device attached to the 1-Wire bus must connect to the
bus with open-drain or tri-state output drivers. The DS2761 used an open-drain output driver as part of
the bidirectional interface circuitry shown in Figure 15. If a bidirectional pin is not available on the bus
master, separate output and input pins can be connected together.
The 1-Wire bus must have a pullup resistor at the bus-master end of the bus. For short line lengths, the
value of this resistor should be approximately 5k W . The idle state for the 1-Wire bus is high. If, for any
reason, a bus transaction must be suspended, the bus must be left in the idle state in order to properly
resume the transaction later. If the bus is left low for more than 120 m s, slave devices on the bus begin to
interpret the low period as a reset pulse, effectively terminating the transaction.
Figure 15. 1-WIRE BUS INTERFACE CIRCUITRY
BUS MASTER
Rx
Vpullup
(2.0V to 5.5V)
4.7k W
DS2761 1-WIRE PORT
Rx
Tx
Rx = RECEIVE
Tx = TRANSMIT
15 of 24
1 m A
(typ)
100 W
MOSFET
Tx
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DS2761K | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Li+ Battery Monitor Evaluation Kit |
| DS2762 | 制造商:Maxim Integrated Products 功能描述:HIGH-PRECISION LI+ BATTERY MONITOR WITH ALERTS - Rail/Tube |
| DS2762A | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:High-Precision Li+ Battery Monitor With Alerts |
| DS2762AE | 制造商:Maxim Integrated Products 功能描述:BAT MON/PROT VOV-4.275 TSSOP - Rail/Tube |
| DS2762AE/T&R | 功能描述:电池管理 RoHS:否 制造商:Texas Instruments 电池类型:Li-Ion 输出电压:5 V 输出电流:4.5 A 工作电源电压:3.9 V to 17 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:VQFN-24 封装:Reel |
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