APB1 peripheral clock enable in low power mode register
| TIM2LPEN | TIM2 clock enable during Sleep mode |
| TIM3LPEN | TIM3 clock enable during Sleep mode |
| TIM4LPEN | TIM4 clock enable during Sleep mode |
| TIM5LPEN | TIM5 clock enable during Sleep mode |
| TIM6LPEN | TIM6LPEN |
| TIM7LPEN | TIM7LPEN |
| TIM12LPEN | TIM12LPEN |
| TIM13LPEN | TIM13LPEN |
| TIM14LPEN | TIM14LPEN |
| LPTIMER1LPEN | TIM14 clock enable during Sleep mode |
| RTCAPBEN | RTC APB clock enable during Sleep mode |
| WWDGLPEN | Window watchdog clock enable during Sleep mode |
| SPI2LPEN | SPI2 clock enable during Sleep mode |
| SPI3LPEN | SPI3 clock enable during Sleep mode |
| USART2LPEN | USART2 clock enable during Sleep mode |
| USART3LPEN | USART3LPEN |
| USART4LPEN | USART4 clock enable during Sleep mode |
| USART5LPEN | USART5 clock enable during Sleep mode |
| I2C1LPEN | I2C1 clock enable during Sleep mode |
| I2C2LPEN | I2C2 clock enable during Sleep mode |
| I2C3LPEN | I2C3 clock enable during Sleep mode |
| I2C4LPEN | I2C4LPEN |
| CAN1LPEN | CAN1LPEN |
| CAN2LPEN | CAN2LPEN |
| CAN3LPEN | CAN3 clock enable during Sleep mode |
| PWRLPEN | Power interface clock enable during Sleep mode |
| DACLPEN | DAC clock enable during Sleep mode |
| UART7LPEN | UART7 clock enable during Sleep mode |
| UART8LPEN | UART8 clock enable during Sleep mode |