Datasheet

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SAM3X / SAM3A [DATASHEET]
Atmel-11057C-ATARM-SAM3X-SAM3A-Datasheet_23-Mar-15
18.5.2 EEFC Flash Command Register
Name: EEFC_FCR
Address: 0x400E0A04 (0), 0x400E0C04 (1)
Access: Write-only
Offset:0x04
• FCMD: Flash Command
This field defines the flash commands. Refer to “Flash Commands” on page 295.
• FARG: Flash Command Argument
• FKEY: Flash Writing Protection Key
This field should be written with the value 0x5A to enable the command defined by the bits of the register. If the field is writ-
ten with a different value, the write is not performed and no action is started.
31 302928 27 26 25 24
FKEY
23 22 21 20 19 18 17 16
FARG
15 14 13 12 11 10 9 8
FARG
76543 210
FCMD
Erase command
For erase all command, this field is meaningless.
Programming command FARG defines the page number to be programmed.
Lock command FARG defines the page number to be locked.
GPNVM command FARG defines the GPNVM number.
Get commands Field is meaningless.
Unique Identifier commands Field is meaningless.