I2C总线扩展，性价比高，应用灵活 GPIO Expander Cost-effective, flexible options from the I2C-bus leader NXP_03_0159_GPIO_Expander_Trifold_939775016987_v2_8,5x11.indd 3 10/09/10 12:34 NXP’s general-purpose input/output (GPIO) expanders are a simple, cost-effective way to monitor and control several peripheral signals. They make it easy for designers to add extra I/O to their design and thereby free up the microprocessor’s GPIO for other, more important functions. NXP is the industry leader in serial-interface GPIO expanders, and offers a broad selection of cost- effective, easy-to-use options. I2C-Bus GPIO Expander Application Example ……