AHB3 peripheral clocks enable in Sleep and Stop modes register
| PKASMEN | PKA accelerator clock enable during CPU1 CSleep mode. |
| AESSMEN | AES accelerator clock enable during CPU1 CSleep mode. |
| RNGSMEN | True RNG clocks enable during CPU1 Csleep and CStop modes |
| SRAM1SMEN | SRAM1 interface clock enable during CPU1 CSleep mode. |
| SRAM2SMEN | SRAM2 memory interface clock enable during CPU1 CSleep mode |
| FLASHSMEN | Flash interface clock enable during CPU1 CSleep mode. |