Rainbow Electronics ATmega64M1 - Manual (Page 292)

292
8209A–AVR–08/09
ATmega16M1/32M1/64M1
Note: 1. See “Alternate Functions of Port C” on page 75 for description of RSTDISBL Fuse.
2. The SPIEN Fuse is not accessible in serial programming mode.
3. See “Watchdog Timer Configuration” on page 52 for details.
4. The default value of BOOTSZ1..0 results in maximum Boot Size. See Table 28-11 on page
295 for details
.
BODLEVEL2 (1) 2
Brown-out
Detector
trigger level 1
(unprogramme
d)
BODLEVEL1 (1) 1
Brown-out
Detector
trigger level 1
(unprogramme
d)
BODLEVEL0 (1) 0
Brown-out
Detector
trigger level 1
(unprogramme
d)
Table 28-6. 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
(see Table 113 for details)
0 (programmed) (4)
BOOTSZ0 1
Select Boot Size
(see Table 113 for details)
0 (programmed) (4)
BOOTRST 0 Select Reset Vector 1 (unprogrammed)
Table 28-7. 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)
Table 28-5. PSC Output Behavior During and after Reset until POC register is written
PSCRB PSCARV PSCBRV PSCOUTnA PSCOUTnB