ATmega48PA/88PA/168PA/328P
Table 27-5. Extended Fuse Byte for ATmega88PA/168PA
Extended Fuse Byte
Bit No
Description
Default Value
–
–
–
–
–
7
6
5
4
3
–
–
–
–
–
1
1
1
1
1
Select Boot Size
(see
Table 26-7 on page 289 and
Table 26-10 on page 290
for details)
BOOTSZ1
2
0 (programmed)(1)
Select Boot Size
(see
Table 26-7 on page 289 and
Table 26-10 on page 290
for details)
BOOTSZ0
BOOTRST
1
0
0 (programmed)(1)
1 (unprogrammed)
Select Reset Vector
Note:
1. The default value of BOOTSZ[1:0] results in maximum Boot Size. See ”Pin Name Mapping” on
page 300.
Table 27-6. Extended Fuse Byte for ATmega328P
Extended Fuse Byte
Bit No
Description
Default Value
–
–
–
–
–
7
6
5
4
3
–
–
–
–
–
1
1
1
1
1
Brown-out Detector trigger
level
BODLEVEL2(1)
BODLEVEL1(1)
BODLEVEL0(1)
2
1
0
1 (unprogrammed)
1 (unprogrammed)
1 (unprogrammed)
Brown-out Detector trigger
level
Brown-out Detector trigger
level
Note:
1. See Table 28-4 on page 318 for BODLEVEL Fuse decoding.
Table 27-7. Fuse High Byte for ATmega48PA/88PA/168PA
High Fuse Byte
RSTDISBL(1)
DWEN
Bit No
Description
Default Value
7
6
External Reset Disable
debugWIRE Enable
1 (unprogrammed)
1 (unprogrammed)
Enable Serial Program and
Data Downloading
0 (programmed, SPI
programming enabled)
SPIEN(2)
5
296
8161D–AVR–10/09
ATMEL [ ATMEL ]
