飞思卡尔16位单片机MC9S12XE系列的周期中断定时器C语言参考代码，绝对能用，本人在MC9S12XEQ512上测试通过。,Freescale 16-bit single-chip cycle MC9S12XE Series C Language Reference timer interrupt code, never use, I MC9S12XEQ512 on the test.