4.3.1.3 Power-Down
During device start-up, the eNVM(s) will be powered up as the fabric is powered up. As soon as the fabric is active, if the user sets the deep power-down (DPD) bit, the NVM(s) will be powered down. Each eNVM block can be put into deep power-down mode by configuring the SYSREG. The eNVM can permanently be switched on or switched off. Refer to the ENVM_CR register (Table 4-11) for configuration settings.
During Flash*Freeze, users may want to put the NVM(s) into deep power-down mode, to save power. The user should not enter power-down while the NVM is in use. DPD is not entered automatically when Flash*Freeze is entered.