SAM4L Datasheet, PDF (147/1185 Pages) ATMEL Corporation – ATSAM ARM-based Flash MCU

ATSAM4L4/L2
1: the Power Save Mode will be the RETENTION mode if the SCR.SLEEPDEEP bit is set to 1 and the Backup Mode is set to
zero.
• BKUP: BACKUP Mode
0: the Power Save Mode will not be the BACKUP mode.
1: the Power Save Mode will be the BACKUP mode if the SCR.SLEEPDEEP bit is set to 1.
• PSCREQ: Power Scaling Change Request
0: A new power scaling is not requested.
1: A new power scaling is requested.
This bit is cleared by hardware after the completion of the power scaling change.
• PS: Power Scaling Configuration Value
Refer to Section 6.1.5 ”Power Save Mode Summary Table” on page 52.
This field is reset to its default value when exiting the backup mode.
Note that this register is protected by a lock. To write to this register the UNLOCK register has to be written first. Refer to
Section 11.6.7 ”Unlock Register” on page 145 for details.
42023C–SAM–02/2013
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