Clock interrupt clear register
| LSIRDYC | LSI ready interrupt clear |
| LSERDYC | LSE ready interrupt clear |
| MSIRDYC | MSI ready interrupt clear |
| HSIRDYC | HSI16 ready interrupt clear |
| HSERDYC | HSE32 ready interrupt clear |
| PLLRDYC | PLL ready interrupt clear |
| CSSC | HSE32 Clock security system interrupt clear |
| LSECSSC | LSE Clock security system interrupt clear |