APB Low Freeze Register
| DBG_TIM2_STOP | Debug Timer 2 stopped when Core is halted |
| DBG_TIM3_STOP | Debug Timer 3 stopped when Core is halted |
| DBG_TIM4_STOP | Debug Timer 4 stopped when Core is halted |
| DBG_TIM5_STOP | Debug Timer 5 stopped when Core is halted |
| DBG_TIM6_STOP | Debug Timer 6 stopped when Core is halted |
| DBG_TIM7_STOP | Debug Timer 7 stopped when Core is halted |
| DBG_TIM12_STOP | Debug Timer 12 stopped when Core is halted |
| DBG_TIM13_STOP | Debug Timer 13 stopped when Core is halted |
| DBG_TIMER14_STOP | Debug Timer 14 stopped when Core is halted |
| DBG_TIM18_STOP | Debug Timer 18 stopped when Core is halted |
| DBG_RTC_STOP | Debug RTC stopped when Core is halted |
| DBG_WWDG_STOP | Debug Window Wachdog stopped when Core is halted |
| DBG_IWDG_STOP | Debug Independent Wachdog stopped when Core is halted |
| I2C1_SMBUS_TIMEOUT | SMBUS timeout mode stopped when Core is halted |
| I2C2_SMBUS_TIMEOUT | SMBUS timeout mode stopped when Core is halted |
| DBG_CAN_STOP | Debug CAN stopped when core is halted |