DS2409P

更新时间： 2024-02-05 18:37:45

品牌	Logo	应用领域
达拉斯 - DALLAS		电信集成电路电信电路光电二极管局域网
页数	文件大小	规格书
18页	416K
描述
MicroLAN Coupler

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技术参数
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DS2409P 技术参数

是否Rohs认证：	不符合	生命周期：	Obsolete
零件包装代码：	SOIC	包装说明：	3.70 X 4 MM, 1.50 MM HEIGHT, TSOC-6
针数：	6	Reach Compliance Code：	not_compliant
HTS代码：	8542.39.00.01	风险等级：	5.73
JESD-30 代码：	R-PDSO-C6	JESD-609代码：	e0
长度：	3.94 mm	湿度敏感等级：	1
功能数量：	1	端子数量：	6
最高工作温度：	85 °C	最低工作温度：	-40 °C
封装主体材料：	PLASTIC/EPOXY	封装代码：	SOC
封装形状：	RECTANGULAR	封装形式：	SMALL OUTLINE
峰值回流温度（摄氏度）：	240	认证状态：	Not Qualified
座面最大高度：	1.5 mm	标称供电电压：	5 V
表面贴装：	YES	电信集成电路类型：	TELECOM CIRCUIT
温度等级：	INDUSTRIAL	端子面层：	Tin/Lead (Sn/Pb)
端子形式：	C BEND	端子节距：	1.27 mm
端子位置：	DUAL	处于峰值回流温度下的最长时间：	20
宽度：	3.76 mm	Base Number Matches：	1

DS2409P 数据手册

DS2409

HARDWARE CONFIGURATION Figure 6

1-WIRE BUS SYSTEM

The 1-Wire bus is a system which has a single bus master and one or more slaves. In all instances the

DS2409 behaves as a slave. The discussion of this bus system is broken down into three topics: hardware

configuration, transaction sequence, and 1-Wire signaling (signal types and timing). A 1-Wire protocol

defines bus transactions in terms of the bus state during specified time slots that are initiated on the

falling edge of sync pulses from the bus master. For a more detailed protocol description, refer to Chapter

4 of the Book of DS19xx iButton Standards.

Hardware Configuration

The 1-Wire bus has only a single line by definition; 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 have open

drain or 3-state outputs. The 1-Wire input of the DS2409 is open drain with an internal circuit equivalent

to that shown in Figure 6. A multidrop bus consists of a 1-Wire bus with multiple slaves attached. The 1-

Wire bus has a maximum data rate of 16.3k bits per second and requires a pullup resistor of

approximately 1.5k? or a DS2480 driver for MicroLAN applications.

The idle state for the 1-Wire bus is high. If for any reason a transaction needs to be suspended, the bus

MUST be left in the idle state if the transaction is to resume. If this does not occur and the bus is left low

for more than 120 µs, one or more of the devices on the bus may be reset. The DS2409 may perform a

power-on reset cycle and deactivate both 1-Wire outputs if the 1-Wire input is low for minimum 8 ms. A

low time of 12 ms or more will always cause a power-on reset cycle.

Transaction Sequence

The protocol for accessing the DS2409 via the 1-Wire port is as follows:

Initialization

ROM Function Command

Control Function Command

INITIALIZATION

All transactions on the 1-Wire bus begin with an initialization sequence. The initialization sequence

consists of a reset pulse transmitted by the bus master followed by presence pulse(s) transmitted by the

slave(s). The presence pulse lets the bus master know that the DS2409 is on the bus and is ready to

operate. For more details, see the “1-Wire Signaling” section.

9 of 18

102199

1...6 7 8910 11 12...18

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与DS2409P相关器件

型号	品牌	描述	获取价格	数据表
DS2409P/T&R	DALLAS	Serial IO/Communication Controller, MOS, PDSO6,	获取价格
DS2411	DALLAS	Silicon Serial Number with VCC Input	获取价格
DS2411	MAXIM	Silicon Serial Number with Vcc Input	获取价格
DS2411	ADI	硅序列号，带有VCC输入	获取价格
DS2411P	DALLAS	Silicon Serial Number with VCC Input	获取价格
DS2411P	ROCHESTER	SPECIALTY MEMORY CIRCUIT, PDSO6, 0.150 INCH, TSOC-6	获取价格

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