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PCA9674 PCA9674A Remote 8-bit IO expander for Fm I2C-bus with interrupt
The PCA9674/74A is a drop-in upgrade for the PCF8574/74A providing higher Fast-modePlus I2C-b...
IO operation
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PCA9535 PCA9535C 16bit I2C bus and SMBus low power IO port with interrupt
The PCA9535 and PCA9535C are 24-pin CMOS devices that provide 16 bits of GeneralPurpose paral...
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基于74HC164扩展单片机系统IO端口
随着面向应用的增加,单片机系统I/O端口数量有限的问题日益突出.根据74HC164串行输入、并行输出的工作原理,对单片机系统的I/O端口进行扩展.设计具有16个按键的中断串行键盘和具有8个数码管的串行...