Datasheet

PSCRB PSCARV PSCBRV PSCOUTnA PSCOUTnB
BODLEVEL2 (1) 2 Brown-out detector
trigger level
1 (unprogrammed)
BODLEVEL1 (1) 1 Brown-out detector
trigger level
1 (unprogrammed)
BODLEVEL0 (1) 0 Brown-out detector
trigger level
1 (unprogrammed)
Table 28-7. 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
BOOTSZ1 2 Select Boot Size 0 (programmed) (4)
BOOTSZ0 1 Select Boot Size 0 (programmed) (4)
BOOTRST 0 Select Reset Vector 1 (unprogrammed)
1. Note: See “Alternate functions of Port C” on page 70 for description of RSTDISBL Fuse.
2. Note: The SPIEN Fuse is not accessible in serial programming mode.
3. Note: See “Watchdog timer configuration.” on page 48 for details.
4. Note: The default value of BOOTSZ1..0 results in maximum Boot Size. See Table 27-11 on page
279 for details.
Table 28-8. Fuse Low byte
Low Fuse byte Bit no. Description Default value
CKDIV8 (4) 7 Divide clock by 8 0 (programmed)
CKOUT (3) 6 Clock output 1 (unprogrammed)
SUT1 5 Select start-up time 1 (unprogrammed) (1)
SUT0 4 Select start-up time 0 (programmed) (1)
CKSEL3 3 Select Clock source 0 (programmed) (2)
CKSEL2 2 Select Clock source 0 (programmed) (2)
CKSEL1 1 Select Clock source 1 (unprogrammed) (2)
CKSEL0 0 Select Clock source 0 (programmed) (2)
Atmel ATmega16M1/32M1/64M1 [DATASHEET]
Atmel-8209F-ATmega16M1/32M1/64M1_Datasheet_Complete-10/2016
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