The PCD5003A is a very low power decoder and pager controller specifically designed for use in new generation radio pagers. The architecture of the PCD5003A allows for flexible application in a wide variety of radio pager designs. The PCD5003

实现了，串口通信，本实例通过串口输出字符串“Hello Word”，并且实现了从串口读取1字节数据后，再返回串口的功能。-Achieved, serial communication, this instance of the string through the serial output " Hello Word" , and achieved a byte of data read from the serial port, then return to the seria