ATmega328P datasheet(288/345 Pages) ATMEL

288 / 345 page

288

7810A–AVR–11/09

ATmega328P [Preliminary]

Note:

1. See Table 28-5 on page 308 for BODLEVEL Fuse decoding..

Notes:

1. See “Alternate Functions of Port C” on page 77 for description of RSTDISBL Fuse.

2. The SPIEN Fuse is not accessible in serial programming mode.

3. See “WDTCSR – Watchdog Timer Control Register” on page 53 for details.

4. The default value of BOOTSZ[1:0] results in maximum Boot Size. See “Pin Name Mapping” on

page 291.

Table 27-5.

Extended Fuse Byte for ATmega328P

Extended Fuse Byte

Bit No

Description

Default Value

–7

–

–6

–

–5

–

–4

–

–3

–

BODLEVEL2(1)

Brown-out Detector trigger

level

1 (unprogrammed)

BODLEVEL1(1)

Brown-out Detector trigger

level

1 (unprogrammed)

BODLEVEL0(1)

Brown-out Detector trigger

level

1 (unprogrammed)

Table 27-6.

Fuse High Byte for ATmega328P

High Fuse Byte

Bit No

Description

Default Value

RSTDISBL(1)

External Reset Disable

1 (unprogrammed)

DWEN

debugWIRE Enable

1 (unprogrammed)

SPIEN(2)

Enable Serial Program and

Data Downloading

0 (programmed, SPI

programming enabled)

WDTON(3)

Watchdog Timer Always On

1 (unprogrammed)

EESAVE

EEPROM memory is preserved

through the Chip Erase

1 (unprogrammed), EEPROM

not reserved

BOOTSZ1

Select Boot Size

(see Table 26-7 on page 283

for details)

0 (programmed)(4)

BOOTSZ0

Select Boot Size

(see Table 26-7 on page 283

for details)

0 (programmed)(4)

BOOTRST

Select Reset Vector

1 (unprogrammed)

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