RCC Clock Source Interrupt Flag Register
| LSIRDYF | LSI ready Interrupt Flag |
| LSERDYF | LSE ready Interrupt Flag |
| HSIRDYF | HSI ready Interrupt Flag |
| HSERDYF | HSE ready Interrupt Flag |
| CSIRDY | CSI ready Interrupt Flag |
| RC48RDYF | RC48 ready Interrupt Flag |
| PLL1RDYF | PLL1 ready Interrupt Flag |
| PLL2RDYF | PLL2 ready Interrupt Flag |
| PLL3RDYF | PLL3 ready Interrupt Flag |
| LSECSSF | LSE clock security system Interrupt Flag |
| HSECSSF | HSE clock security system Interrupt Flag |