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PCA9673是PCF8575的升级产品，提供快速模式FM+的I2C-bus速度（1MHz），因此，输出能支持PWM LED调光功能。具有高I2C总线驱动能力（30mA），所以不需要总线缓冲器就能挂接很多器件。且灌电流能力高（200mA），...
PCF8574 Remote 8-bit I/O expander for I2C-bus IO扩展芯片测试程序
The PCI Local bus concept was developed to break the PC data I/O bottleneck and clearly opens the door to increasing s...
The PCI Local bus concept was developed to break the PC data I/O bottleneck and clearly opens the door to increasing s...
The PCI Local bus concept was developed to break the PC data I/O bottleneck and clearly opens the door to increasing s...
The PCA9549 provides eight bits of high speed TTL-compatible bus switching controlledby the I