TZIC flag clear register 1
| CTIM2F | clear the illegal access flag for TIM2 |
| CTIM3F | clear the illegal access flag for TIM3 |
| CTIM4F | clear the illegal access flag for TIM4 |
| CTIM5F | clear the illegal access flag for TIM5 |
| CTIM6F | clear the illegal access flag for TIM6 |
| CTIM7F | clear the illegal access flag for TIM7 |
| CWWDGF | clear the illegal access flag for WWDG |
| CIWDGF | clear the illegal access flag for IWDG |
| CSPI2F | clear the illegal access flag for SPI2 |
| CUSART2F | clear the illegal access flag for USART2 |
| CUSART3F | clear the illegal access flag for USART3 |
| CUART4F | clear the illegal access flag for UART4 |
| CUART5F | clear the illegal access flag for UART5 |
| CI2C1F | clear the illegal access flag for I2C1 |
| CI2C2F | clear the illegal access flag for I2C2 |
| CCRSF | clear the illegal access flag for CRS |
| CI2C4F | clear the illegal access flag for I2C4 |
| CLPTIM2F | clear the illegal access flag for LPTIM2 |
| CFDCAN1F | clear the illegal access flag for FDCAN1 |
| CUCPD1F | clear the illegal access flag for UCPD1 |
| CUSART6F | clear the illegal access flag for USART6 |
| CI2C5F | clear the illegal access flag for I2C5 |
| CI2C6F | clear the illegal access flag for I2C6 |