PWM0:
1.	ѡϵͳʱԴõĴOSCMѡƵʱ16MƵʱ32K/500KPWM0ֻѡTC0ʱʱ/ʱؼĴT0CRԼPWM0ĴPWM0CRPWM0D

2.      PWM0ֻ8λֱģʽֻһ˿IOB3

3.      ʼSystem_Init.incļУûɸݾӦ޸á

:
        ϵͳʼʱӼ˿ŹܲRAM㡣
	ڲ˿IOB3á
	ʱԴTC0:8λģʽ£Ƶʱ16MԤƵ1:64,2491KHzΡ
	PWM0:50%ռձPWMΡ
	ݿPWM0
       