AHB Low-power Peripheral Clock enable register 1 (CRM_AHBLPEN1)
| GPIOALPEN | IO A clock enable during sleep mode |
| GPIOBLPEN | IO B clock enable during sleep mode |
| GPIOCLPEN | IO C clock enable during sleep mode |
| GPIODLPEN | IO D clock enable during sleep mode |
| GPIOELPEN | IO E clock enable during sleep mode |
| GPIOFLPEN | IO F clock enable during sleep mode |
| GPIOGLPEN | IO G clock enable during sleep mode |
| GPIOHLPEN | IO H clock enable during sleep mode |
| CRCLPEN | CRC clock enable during sleep mode |
| FLASHLPEN | Flash clock enable during sleep mode |
| SRAM1LPEN | SRAM1 clock enable during sleep mode |
| SRAM2LPEN | SRAM2 clock enable during sleep mode |
| EDMALPEN | EDMA clock enable during sleep mode |
| DMA1LPEN | DMA1 clock enable during sleep mode |
| DMA2LPEN | DMA2 clock enable during sleep mode |
| EMACLPEN | EMAC clock enable during sleep mode |
| EMACTXLPEN | EMAC Tx clock enable during sleep mode |
| EMACRXLPEN | EMAC Rx clock enable during sleep mode |
| EMACPTPLPEN | EMAC PTP clock enable during sleep mode |
| OTGFS2LPEN | OTGFS2 clock enable during sleep mode |