ʹTIM8,
/* CH1: 1 0 0 0 0 1
  CH1N: 0 0 1 1 0 0
   CH2: 0 0 0 1 1 0
  CH2N: 1 1 0 0 0 0
   CH3: 0 1 1 0 0 0
  CH3N: 0 0 0 0 1 1
*/
/*
  TIM8:
  CH1  :PD3_AF2
  CH1N :PD5_AF2
  CH2  :PD7_AF2
  CH2N :PD2_AF2
  CH3  :PD4_AF2 
  CH3N :PD6_AF2
  CH4  :PD0_AF1 
  CH5  :PD8_AF2
  CH6  :PD9_AF2
  BKIN :PC4_AF2
  BKIN2:PD10_AF2
  */  