Datasheet

25.6.6.8 Power Reduction Mode
The NVM implements a power reduction mode which cuts its static power consumption. If a command or
a AHB access is issued the NVM is woken-up. The AHB access or the command are processed after the
NVM wake-up time. The wake-up time can be reduced by enabling the PM fast wake-up feature, this is
configured through the PM STDBYCFG register.
The NVM Power Reduction Mode is entered depending on the CTRLA.PRM mode:
• MANUAL:
– Power Reduction Mode entering conditions:
• SPRM command
– Power Reduction Mode leaving conditions:
• AHB access (read or write)
• CPRM or any other command
• SEMIAUTO:
– Power Reduction Mode entering conditions:
• SPRM command
• System enters standby mode
• AHB access completes while in standby mode
• Any command completes while in standby mode
– Power Reduction Mode leaving conditions:
• AHB access (read or write)
• CPRM or any other command
• FULLAUTO:
– Power Reduction Mode entering conditions:
• SPRM command
• System enters standby mode
• AHB access completes while in standby mode
• Any command completes while in standby mode
– Power Reduction Mode leaving conditions:
• AHB access (read or write)
• CPRM or any other command
• When the system leaves the standby mode
STATUS.READY is high when the NVM is in Power Reduction Mode indicating that the module can
accept a command.
STATUS.PRM is high when the NVM is in Power Reduction Mode.
Note: It is not possible to enter power reduction mode when a command is suspended. Automatic power
reduction entry is postponed until the command resumes and completes. The SPRM command is
discarded when STATUS.SUSP is high and INTFLAG.PROGE is set.
Related Links
18. PM – Power Manager
18.8.7 STDBYCFG
SAM D5x/E5x Family Data Sheet
NVMCTRL – Nonvolatile Memory Controller
© 2019 Microchip Technology Inc.
Datasheet
DS60001507E-page 651