8-bit AVR Microcontroller

20.7.2 Non-Volatile Memory Command Register

Name:	NVMCMD
Offset:	0x33
Reset:	0x00
Property:	-


Bit	7	6	5	4	3	2	1	0
			NVMCMD[5:0]
Access			R/W	R/W	R/W	R/W	R/W	R/W
Reset			0	0	0	0	0	0

Bits 5:0 – NVMCMD[5:0] Non-Volatile Memory Command

These bits define the programming commands for the flash.

Table 20-10. NVM Programming commands
Operation Type	NVMCMD		Mnemonic	Description
Operation Type	Binary	Hex	Mnemonic	Description
General	0b000000	0x00	NO_OPERATION	No operation
	0b010000	0x10	CHIP_ERASE	Chip erase⁽¹⁾
	0b010001	0x11	CHIP_WRITE	Write chip⁽²⁾
Section	0b010100	0x14	SECTION_ERASE	Section erase
Word	0b011101	0x1D	WORD_WRITE	Word write
Page	0b011000	0x18	PAGE_ERASE	Erase page

Note:

Erase the Code section and the Non-Volatile Memory lock bits.
Write the Code section, but doesn't affect the Non-Volatile Memory lock bits. Self-programming supports NO_OPERATION, WORD_WRITE, and PAGE_ERASE

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