C2IMR1
| RTCSTAMPTAMPLSECSSIM | Peripheral RTCSTAMPTAMPLSECSS interrupt mask to CPU2 |
| RTCALARMIM | Peripheral RTCALARM interrupt mask to CPU2 |
| RTCSSRUIM | RTCSSRUIM |
| RTCWKUPIM | Peripheral RTCWKUP interrupt mask to CPU2 |
| RCCIM | Peripheral RCC interrupt mask to CPU2 |
| FLASHIM | Peripheral FLASH interrupt mask to CPU2 |
| PKAIM | PKAIM |
| AES1IM | AES1IM |
| COMPIM | Peripheral COMP interrupt mask to CPU2 |
| ADCIM | Peripheral ADC interrupt mask to CPU2 |
| DAC1IM | Peripheral DAC1 interrupt mask to CPU2 |
| EXTI0IM | Peripheral EXTI0 interrupt mask to CPU2 |
| EXTI1IM | Peripheral EXTI1 interrupt mask to CPU2 |
| EXTI2IM | Peripheral EXTI2 interrupt mask to CPU2 |
| EXTI3IM | Peripheral EXTI3 interrupt mask to CPU2 |
| EXTI4IM | Peripheral EXTI4 interrupt mask to CPU2 |
| EXTI5IM | Peripheral EXTI5 interrupt mask to CPU2 |
| EXTI6IM | Peripheral EXTI6 interrupt mask to CPU2 |
| EXTI7IM | Peripheral EXTI7 interrupt mask to CPU2 |
| EXTI8IM | Peripheral EXTI8 interrupt mask to CPU2 |
| EXTI9IM | Peripheral EXTI9 interrupt mask to CPU2 |
| EXTI10IM | Peripheral EXTI10 interrupt mask to CPU2 |
| EXTI11IM | Peripheral EXTI11 interrupt mask to CPU2 |
| EXTI12IM | Peripheral EXTI12 interrupt mask to CPU2 |
| EXTI13IM | Peripheral EXTI13 interrupt mask to CPU2 |
| EXTI14IM | Peripheral EXTI14 interrupt mask to CPU2 |
| EXTI15IM | Peripheral EXTI15 interrupt mask to CPU2 |