˹̽TIM2 ΪPWMĲ

1. ʾ 
	Ƶʣ96M
	
	ʱڼ㹫ʽ(period+1)/Freq *(Prescaler)   
	                   = (0xFFFF+1)/96000000 * (128)
					   =  0.0873s

2ã
	ûͨ0˫ء
	PB0/PB1/PB2ֱPA0/PA4/PA10ģźš