Datasheet

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CMD[6:0] Group
Configuration
Description
0x06 WAP Write Auxiliary Page - Writes the contents of the page buffer to the
page addressed by the ADDR register. This command can be given
only when the Security bit is not set and only to the User
Configuration Row.
0x07-0x0E - Reserved
0x0F - Reserved
0x1A-0x19 - Reserved
0x1A RWWEEER RWWEE Erase Row - Erases the row addressed by the ADDR
register in the RWWEE array.
0x1B - Reserved
0x1C RWWEEWP RWWEE Write Page - Writes the contents of the page buffer to the
page addressed by the ADDR register in the RWWEE array.
0x1D-0x3F - Reserved
0x40 LR Lock Region - Locks the region containing the address location in
the ADDR register.
0x41 UR Unlock Region - Unlocks the region containing the address location
in the ADDR register.
0x42 SPRM Sets the Power Reduction mode.
0x43 CPRM Clears the Power Reduction mode.
0x44 PBC Page Buffer Clear - Clears the page buffer.
0x45 SSB Set Security Bit - Sets the Security bit by writing 0x00 to the first
byte in the lockbit row.
0x46 INVALL Invalidates all cache lines.
0x47 LDR Lock Data Region - Locks the data region containing the address
location in the ADDR register.
When the security extension is enabled, only secure access can
lock secure regions.
0x48 UDR Unlock Data Region - Unlocks the data region containing the
address location in the ADDR register.
When the security extension is enabled, only secure access can
unlock secure regions.
0x47-0x7F - Reserved
SAM D21 Family
NVMCTRL – Nonvolatile Memory Controller
© 2018 Microchip Technology Inc.
Datasheet Complete
DS40001882D-page 395