msp430g2553 驱动IO扩展芯片PCA9539-Msp430g2553 drive IO expand chip PCA9539

PCA9539驱动，支持I2C 总线和系统管理总线的16位 I/O端 s3c2440可用-Remote 16-Bit I2C and SMBus Low-Power I/O Expander, PCA9539 driver for linux2.6

platform data for the PCA9539 16-bit I O expander driver.

驱动IO扩展芯片PCA9539 pca9539是一个24针CMOS器件，提供16位的通用并行输入/输出（GPIO）与中断和I2C/SMBus应用，用来提高I2C飞利浦的I / O扩展家庭复位膨胀。(Drive IO extension chip PCA9539 The PCA9539 is a 24-pin CMOS device that provide 16 bits ofGeneral Purpose parallel Input/Output (GPIO) expansion with