Debug MCU APB1 freeze register
| DBG_TIM2_STOP | TIM2 counter stopped when core is halted |
| DBG_TIM3_STOP | TIM3 counter stopped when core is halted |
| DBG_TIM6_STOP | TIM6 counter stopped when core is halted |
| DBG_TIM7_STOP | TIM7 counter stopped when core is halted |
| DBG_TIM14_STOP | TIM14 counter stopped when core is halted |
| DBG_RTC_STOP | Debug RTC stopped when core is halted |
| DBG_WWDG_STOP | Debug window watchdog stopped when core is halted |
| DBG_IWDG_STOP | Debug independent watchdog stopped when core is halted |
| DBG_I2C1_SMBUS_TIMEOUT | SMBUS timeout mode stopped when core is halted |
| DBG_CAN_STOP | CAN stopped when core is halted |