Clock interrupt flag register
| LSIRDYF | LSI ready interrupt flag |
| LSERDYF | LSE ready interrupt flag |
| HSI16RDYF | HSI16 ready interrupt flag |
| HSERDYF | HSE ready interrupt flag |
| PLLRDYF | PLL ready interrupt flag |
| MSIRDYF | MSI ready interrupt flag |
| HSI48RDYF | HSI48 ready interrupt flag |
| CSSLSEF | LSE Clock Security System Interrupt flag |
| CSSHSEF | Clock Security System Interrupt flag |