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参数资料
| 型号： | DS2409P/T&R |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 7/18页 |
| 文件大小： | 0K |
| 描述： | IC COUPLER MICROLAN 1-WIRE 6TSOC |
| 标准包装： | 4,000 |
| 接口： | 1 线 |
| 电源电压： | 4.5 V ~ 5.5 V |
| 封装/外壳： | 6-LSOJ |
| 供应商设备封装： | 6-TSOC |
| 包装： | 带卷 (TR) |
| 安装类型： | 表面贴装 |
DS2409
15 of 18
APPLICATION EXAMPLES
Figures 10 and 11 show two application examples of the DS2409 MicroLAN Coupler. A single trunk
with branches is the typical topology of an access control system with the iButtons being the electronic
keys required for admittance. The host computer runs a program that scans the devices on the trunk for
events (conditional search). When somebody touches the probe with an iButton, this will set the event
flag of the main line and the coupler will respond. The ID chip represents the DS2430A that labels the
access point. The 64-bit ROM ID of the arriving iButton is the key for the entrance. In a real access
control application, the LED will be replaced by a solenoid that opens the lock under software control
(manual mode). The same network topology could be used for an inventory control system with the
branches representing individual shelves of a rack. The iButtons would be electronic tags mounted on
objects sitting on the shelves. The LED would guide the warehouse worker in placing the objects onto the
right shelf.
The dual-master system realizes a master to master communication path via the 1-Wire bus. The DS1996
Memory iButton serves as a temporary storage for the data packets to be exchanged. When idle, both
main outputs as well as the auxiliary outputs are inactive. To access the Memory iButton, the host A first
switches on the control output, thereby pulling the auxiliary line of the coupler at the B side low. This
tells host B that it is not allowed to activate the main output of coupler B. Now, host A activates the main
output of coupler A and writes data to the Memory iButton. After the writing is complete, host A
deactivates the main output of coupler A and switches off the control output. Host B, meanwhile, has
been polling the logic level at the auxiliary line of coupler B and realizes that host A has finished the
access. Now, host B follows the same procedure and accesses the memory to read the data, etc. The
memory iButton may be replaced by a MicroLAN network. The Silicon Label stores information telling
the hosts that these particular couplers access the same network and that the control and auxiliary outputs
are cross-coupled for handshaking.
MicroLAN TRUNK WITH BRANCHES Figure 10
Not
Recommended
for
New
Design
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| DS2411P+T&R | IC SILICON SERIAL NUMBER 6TSOC |
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| DS2482X-100+T | IC MASTER I2C-1WIRE 1CH 9-WLP |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DS2411 | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Silicon Serial Number with Vcc Input |
| DS2411C/W | 制造商:Maxim Integrated Products 功能描述:SINGLE, UNSORTED UN-BACKLAPPED WAFER - Gel-pak, waffle pack, wafer, diced wafer on film |
| DS2411MP000 | 制造商:Thomas & Betts 功能描述:200A,PLG,3P4W,MG,411,220V,400HZ |
| DS2411P | 功能描述:序列号注册 RoHS:否 制造商:Maxim Integrated 数据总线宽度: 电源电压-最大: 电源电压-最小: 最大工作温度: 最小工作温度: 安装风格: 封装 / 箱体: |
| DS2411P/R | 制造商:DALLAS 制造商全称:Dallas Semiconductor 功能描述:Silicon Serial Number with VCC Input |
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