Atmel ATmega328P Xplained Mini MEGA328P-XMINI MEGA328P-XMINI Ficha De Dados

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ATmega48A/PA/88A/PA/168A/PA/328/P [DATASHEET]

Atmel-8271H-AVR- ATmega-Datasheet_08/2014

In 

 through 

, the parameters used in the description of the self programming are given. 

Note:

The different BOOTSZ Fuse configurations are shown in 

For details about these two section, see 

Note:

1. Z15:Z13: always ignored

Z0: should be zero for all SPM commands, byte select for the LPM instruction.
See 

 for details about the use of Z-pointer during Self-

Programming.

1

1

128 words

4

0x000 - 0xF7F

0xF80 - 0xFFF

0xF7F

0xF80 

1

0

256 words

8

0x000 - 0xEFF

0xF00 - 0xFFF

0xEFF

0xF00

0

1

512 words

16

0x000 - 0xDFF

0xE00 - 0xFFF

0xDFF

0xE00

0

0

1024 words

32

0x000 - 0xBFF

0xC00 - 0xFFF

0xBFF

0xC00

Read-While-Write section (RWW)

96

0x000 - 0xBFF

No Read-While-Write section (NRWW)

32

0xC00 - 0xFFF

PCMSB

11

Most significant bit in the Program Counter. (The Program Counter is 
12 bits PC[11:0])

PAGEMSB

4

Most significant bit which is used to address the words within one 
page (32 words in a page requires 5 bits PC [4:0]).

ZPCMSB

Z12

Bit in Z-register that is mapped to PCMSB. Because Z0 is not used, 
the ZPCMSB equals PCMSB + 1.

ZPAGEMSB

Z5

Bit in Z-register that is mapped to PAGEMSB. Because Z0 is not 
used, the ZPAGEMSB equals PAGEMSB + 1.

PCPAGE

PC[11:5]

Z12:Z6

Program counter page address: Page select, for page erase and 
page write

PCWORD

PC[4:0]

Z5:Z1

Program counter word address: Word select, for filling temporary 
buffer (must be zero during page write operation)