LPC23XX系列芯片中文手册，非常实用，从基本的寄存器开始，深入理解ARM工作原理-LPC23XX series chip Chinese manual, very practical, start from the basic register, in-depth understanding of the working principle of ARM

周立功LPC23XX开发板USB例程，共大家参考，可以节省开发周期！-LPC23XX USB