CPU2 APB2 peripheral clocks enable in Sleep mode register [dual core device only]
| ADCSMEN | ADC clocks enable during CPU2 Csleep and CStop modes |
| TIM1SMEN | TIM1 timer clock enable during CPU2 CSleep mode |
| SPI1SMEN | SPI1 clock enable during CPU2 CSleep mode |
| USART1SMEN | USART1clock enable during CPU2 CSleep and CStop mode |
| TIM16SMEN | TIM16 timer clock enable during CPU2 CSleep mode |
| TIM17SMEN | TIM17 timer clock enable during CPU2 CSleep mode |