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单片机编程 PCA9517低电压I2C总线中继器
PCA9517 是一款基于CMOS 工艺的低电压I2C 中继器，在I2C 总线或SMBus 应用中进行高低电压转换。PCA9517 能够在电平转换期间保持总线所有的操作模式和特性，通过数据线（SDA）和时钟线（SCL）的双向缓存实现I2C 总线扩展，总线最大容性负载为400pF。PCA9517 能够隔离器件总线两端的电压和容性负载。SDA 和SCL 引脚具有过压保 ...
单片机编程 PCA9538 8bit I2C bus and SMBus
The PCA9538 is a 16-pin CMOS device that provides 8 bits of General Purpose parallelInput/Output (GPIO) expansion with interrupt and reset for I2C-bus/SMBus applicationsand was developed to enhance the NXP Semiconductors family of I2C-bus I/O expanders.I/O expanders provide a simple solution when ad ...
单片机编程 PCA9539 PCA9539R 16-bit I2C-bu
The PCA9539; PCA9539R is a 24-pin CMOS device that provides 16 bits of GeneralPurpose parallel Input/Output (GPIO) expansion with interrupt and reset forI2C-bus/SMBus applications and was developed to enhance the NXP Semiconductorsfamily of I2C-bus I/O expanders. I/O expanders provide a simple solut ...
单片机编程 PCA9518A I2C 中继器集线器与扩展器
PCA9518 是一款采用BiCMOS 工艺的总线集线器，通过它可以扩展I2C 和SMBus 系统。PCA9518 在保持总线操作模式和特性的情况下，通过缓存数据线（SDA）和时钟线（SCL）的数据实现I2C 总线扩展，使总线最大容性负载为400pF。
单片机编程 PCA9540B 2channel I2C bus mult
The PCA9540B is a 1-of-2 bidirectional translating multiplexer, controlled via the I2C-bus.The SCL/SDA upstream pair fans out to two SCx/SDx downstream pairs, or channels.Only one SCx/SDx channel is selected at a time, determined by the contents of theprogrammable control register.
单片机编程 PCA9541 2 to 1 I2C-bus master
The PCA9541 is a 2-to-1 I2C-bus master selector designed for high reliability dual masterI2C-bus applications where system operation is required, even when one master fails orthe controller card is removed for maintenance. The two masters (for example, primaryand back-up) are located on separate I2C ...
单片机编程 PCA9519 4通道I2C-bus SMBus 中继器
PCA9519 是一个4 通道的I2C 总线/SMBus 中继器，可以实现将低电压两线串行总线接口的处理器与标准的I2C 总线或SMBus I/O 相连。该中继器在电平转换中保持I2C 总线系统所有的模式和特点的同时，允许通过给数据总线（SDA）和时钟总线（SCK）提供双向缓冲区来扩展I2C 总线，从而使I2C 总线或SMBus 在高电压下最大容限电容为400 ...
单片机编程 PCA9542A 2channel I2C bus mult
The PCA9542A is a 1-of-2 bidirectional translating multiplexer, controlled via the I2C-bus.The SCL/SDA upstream pair fans out to two SCx/SDx downstream pairs, or channels.Only one SCx/SDx channel is selected at a time, determined by the contents of theprogrammable control register. Two interrupt inp ...
单片机编程 PCA9544中文资料
PCA9544 是NXP 公司生产的I2C 总线扩展器件，通过它可以将1 路I2C 总线扩展为4路。在对内部控制寄存器进行相应配置后，可选择4 路下行I2C 总线中的任1 路与上行I2C总线连接。具有4 个中断输入和1 个中断输出引脚，增加了I2C 器件实时处理能力。经过对器件工作电压的选择，可使1.8V、2.5V、3.3V 与5V 的总线电压之间相互通信 ...
单片机编程 PCA9546A 4 channel I2C bus swi
The PCA9546A is a quad bidirectional translating switch controlled via the I2C-bus. TheSCL/SDA upstream pair fans out to four downstream pairs, or channels. Any individualSCx/SDx channel or combination of channels can be selected, determined by thecontents of the programmable control register.