GM812X 系列串口扩展芯片可为用户提供最简单和高性能的通用串口扩展方案，该系列芯

片子串口最高波特率达38400bps。该芯片提供两种工作模式，用户可根据需要灵活选择。该芯

片母串口和子串口的工作波特率可由软件调节，而不需要修改外部电路和晶振频率。

GM812X 系列芯片的外部控制少，应用灵活，编程使用简单，适合于大多数需要多串口扩

展的应用场合。

驱动C代码-GM812X series of serial chip can be extended to provide users with the most simple and high-performance general-purpose serial port expansion program, the series of sub-chip serial maximum baud rate up to 38400bps. The chip offers two operating modes, the user can choose according to need to be flexible. The chip serial mother and son work of serial baud rate adjustment by the software, without modifying the external circuit and crystal frequency. GM812X series chips less external control, application flexibility, programming using a simple, suitable for the majority of the need for the expansion of multi-serial applications. Drive C code