多样的易于使用的GPIO扩展器 NXP 4/8/16-bit I2C/SMBus GPIO expanders PCA9536/54/54A/55 Versatile, easy-to-use GPIO expanders These I2C/SMBus-compatible devices make it easy to add programmable I/O ports to a wide range of applications. Key features These expanders provide a simple way to add I/O for ACPI Compatible with I2C-bus and SMBus power switches, sensors, pushbuttons, LEDs, fans, and 4, 8 or 16 programmable GPIO compatible with most functions, in a wide variety of I2C-bus and SMBus applications. processors ……