Atmel SAM4S-XPLD Atmel ATSAM4S-XPLD ATSAM4S-XPLD Hoja De Datos

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SAM4S [DATASHEET]

11100E–ATARM–24-Jul-13

Erase all command

Field is meaningless.

Erase sector command

FARG must be set with a page number that is in the sector to be erased.

Erase pages command

FARG[1:0] defines the number of pages to be erased.

The page number from which the erase will start is defined as follows:

FARG[1:0]=0, start page = 4*FARG[15:2] 

FARG[1:0]=1, start page = 8*FARG[15:3], FARG[2] undefined

FARG[1:0]=2, start page = 16*FARG[15:4], FARG[3:2] undefined 

FARG[1:0]=3, start page = 32*FARG[15:5], FARG[4:2] undefined 

Note: undefined bit must be written to 0.

Refer to 

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.

0x5A

PASSWD

The 0x5A value enables the command defined by the bits of 
the register. If the field is written with a different value, the write 
is not performed and no action is started.