46.4.1 Power Management

The AES will continue to operate in Standby sleep mode, if it's source clock is running.

The AES interrupts can be used to wake up the device from Standby sleep mode. Refer to the Power Manager chapter for details on the different sleep modes.

AES is clocked only on the following conditions:

  • When the DMA is enabled.
  • Whenever there is an APB access for any read and write operation to the AES registers. (Not in Standby sleep mode.)
  • When the AES is enabled & encryption/decryption is ongoing.