本程序代码使用SD16模块在四组通路上执行连续的转换，每当转换完成后SD16中断就会发生。-This program uses the SD16 module to perform continuous

conversions on a group of channels (0, 1,2 and 3). A SD16 interrupt occurs

　whenever the conversions have completed. Test by applying voltages to the

four input channels and setting a breakpoint at the line indicated

below.