Datasheet

Table 32-5. Extended Fuse Byte for ATmega48PA
Extended Fuse Byte Bit No. Description Default Value
– 7 – 1
– 6 – 1
– 5 – 1
– 4 – 1
– 3 – 1
– 2 – 1 (unprogrammed)
– 1 – 1 (unprogrammed)
SELFPRGEN 0 Self Programming Enable 1 (unprogrammed)
Table 32-6. Extended Fuse Byte for ATmega88PA/ATmega168PA
Extended Fuse Byte Bit No. Description Default Value
– 7 – 1
– 6 – 1
– 5 – 1
– 4 – 1
– 3 – 1
BOOTSZ1 2 Select Boot Size
(1)
0 (programmed)
(2)
BOOTSZ0 1 Select Boot Size
(1)
0 (programmed)
(2)
BOOTRST 0 Select Reset Vector 1 (unprogrammed)
Note:
1. See Boot Size Configuration in the Boot Loader Parameters section.
2. The default value of BOOTSZ[1:0] results in maximum Boot Size. See Boot size configuration table
for details.
Table 32-7. Fuse High Byte
High Fuse Byte Bit No. Description Default Value
RSTDISBL
(1)
7 External Reset Disable 1 (unprogrammed)
DWEN 6 debugWIRE Enable 1 (unprogrammed)
SPIEN
(2)
5 Enable Serial Program and Data
Downloading
0 (programmed, SPI programming
enabled)
WDTON
(3)
4 Watchdog Timer Always On 1 (unprogrammed)
EESAVE 3 EEPROM memory is preserved through
the Chip Erase
1 (unprogrammed), EEPROM not
reserved
BODLEVEL2
(4)
2 Brown-out Detector trigger level 1 (unprogrammed)
ATmega48PA/88PA/168PA
Memory Programming (MEMPROG)
© 2018 Microchip Technology Inc.
Datasheet Complete
DS40002011A-page 366