5秒后页面跳转
DS2480BS PDF预览

DS2480BS

更新时间: 2024-02-06 09:16:54
品牌 Logo 应用领域
达拉斯 - DALLAS 线路驱动器或接收器驱动程序和接口接口集成电路光电二极管
页数 文件大小 规格书
30页 410K
描述
Serial 1-Wire Line Driver with Load Sensor

DS2480BS 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:SOP, SOP8,.25
针数:8Reach Compliance Code:not_compliant
风险等级:5.87JESD-30 代码:R-PDSO-G8
JESD-609代码:e0湿度敏感等级:1
端子数量:8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:SOP封装等效代码:SOP8,.25
封装形状:RECTANGULAR封装形式:SMALL OUTLINE
电源:5 V认证状态:Not Qualified
子类别:Serial IO/Communication Controllers标称供电电压:5 V
表面贴装:YES技术:CMOS
温度等级:INDUSTRIAL端子面层:Tin/Lead (Sn/Pb)
端子形式:GULL WING端子节距:1.27 mm
端子位置:DUAL

DS2480BS 数据手册

 浏览型号DS2480BS的Datasheet PDF文件第2页浏览型号DS2480BS的Datasheet PDF文件第3页浏览型号DS2480BS的Datasheet PDF文件第4页浏览型号DS2480BS的Datasheet PDF文件第6页浏览型号DS2480BS的Datasheet PDF文件第7页浏览型号DS2480BS的Datasheet PDF文件第8页 
DS2480B  
A master reset cycle can also be generated by means of software. This may be necessary if the host for  
any reason has lost synchronization with the device. The DS2480B will perform a master reset cycle  
equivalent to the power–on reset if it detects start polarity in place of the stop bit. The host has several  
options to generate this condition. These include making the UART generate a break signal, sending a  
NULL character at a data rate of 4800 bps and sending any character with parity enabled and selecting  
space polarity for the parity bit. As with the power–on reset, the DS2480B requires a 1–Wire reset  
command sent by the host at a data rate of 9600 bps for calibration.  
After the DS2480B has reached the Command Mode, the host can send commands such as 1–Wire Reset,  
Pulse, Configuration, Search Accelerator and Single Bit functions or switch over to the second static state  
called Data Mode. In Data Mode the DS2480B simply converts bytes it receives at the TXD pin into  
their equivalent 1–Wire wave forms and reports the results back to the host through the RXD pin. If the  
Search Accelerator is on, each byte seen at TXD will generate a 12–bit sequence on the 1–Wire bus (see  
section Search Accelerator for details). If the strong pullup to 5V is enabled (see Pulse command), each  
byte on the 1–Wire bus will be followed by a pause of predefined duration where the bus is pulled to 5V  
via a low impedance transistor in the 1–Wire driver circuit.  
While being in the Data Mode the DS2480B checks each byte received from the host for the reserved  
code that is used to switch back to Command Mode. To be able to write any possible code (including the  
reserved one) to the 1–Wire bus, the transition to the Command Mode is as follows: After having  
received the code for switching to Command Mode, the device temporarily enters the Check Mode  
where it waits for the next byte. If both bytes are the same, the byte is sent once to the 1–Wire bus and  
the device returns to the Data Mode. If the second byte is different from the reserved code, it will be  
executed as command and the device finally enters the Command Mode. As a consequence, if the  
reserved code that normally switches to Command Mode is to be written to the 1–Wire bus, this code  
byte must be sent twice (duplicated). This detail must be considered carefully when developing software  
drivers for the DS2480B.  
After having completed a memory function with a device on the 1–Wire bus it is recommended to issue a  
Reset Pulse. This means that the DS2480B has to be switched to Command Mode. The host then sends  
the appropriate command code and continues performing other tasks. If during this time a device arrives  
at the 1–Wire bus it will generate a presence pulse. The DS2480B will recognize this unsolicited presence  
pulse and notify the host by sending a byte such as XXXXXX01b. The Xs represent undefined bit values.  
The fact that the host receives the byte unsolicited together with the pattern 01b in the least significant 2  
bits marks the bus arrival. If the DS2480B is left in Data Mode after completing a memory function  
command it will not report any bus arrival to the host.  
COMMAND CODE OVERVIEW  
The DS2480B is controlled by a variety of commands. All command codes are 8 bits long. The most  
significant bit of each command code distinguishes between communication and configuration  
commands. Configuration commands access the configuration registers. They can write or read any of the  
configurable parameters. Communication commands use data of the configuration register in order to  
generate activity on the 1–Wire bus and/or (dis)arm the strong pullup after every byte or (de)activate the  
Search Accelerator without generating activity on the 1–Wire bus. Details on the command codes are  
included in the State Transition diagram (Figure 2). A full explanation is given in the subsequent sections  
Communication Commands and Configuration Commands.  
5 of 30  
101999  

与DS2480BS相关器件

型号 品牌 描述 获取价格 数据表
DS2480S DALLAS Serial 1.Wire Line Driver

获取价格

DS2482-100 DALLAS Single-Channel 1-Wire Master

获取价格

DS2482-100 MAXIM Single-Channel 1-Wire Master

获取价格

DS2482-100 ADI 单通道1-Wire主控制器

获取价格

DS2482-100_12 MAXIM Single-Channel 1-Wire Master

获取价格

DS2482-101 MAXIM Single-Channel 1-Wire Master with Sleep Mode

获取价格