ATMEGA128-16AU SL383 Atmel, ATMEGA128-16AU SL383 Datasheet - Page 287

• Manufacturer Part Number: ATMEGA128-16AU SL383
• Manufacturer: Atmel

Fuse Bits
2467S–AVR–07/09
Table 116. Lock Bit Protection Modes (Continued)
Notes:
The ATmega128 has three fuse bytes.
all the fuses and how they are mapped into the fuse bytes. Note that the fuses are read as logi-
cal zero, “0”, if they are programmed.
Table 117. Extended Fuse Byte
Notes:
–
–
–
–
–
–
M103C
WDTON
Extended Fuse Byte
1
2
3
4
Memory Lock Bits
(1)
1. Program the fuse bits before programming the Lock bits.
2. “1” means unprogrammed, “0´means programmed
1. See
2. See
(2)
“ATmega103 and ATmega128 Compatibility” on page 4
“Watchdog Timer Control Register – WDTCR” on page 56
1
1
0
0
Bit No.
1
0
0
1
7
6
5
4
3
2
1
0
Protection Type
No restrictions for SPM or (E)LPM accessing the Boot
Loader section.
SPM is not allowed to write to the Boot Loader section.
SPM is not allowed to write to the Boot Loader section,
and (E)LPM executing from the Application section is not
allowed to read from the Boot Loader section. If interrupt
vectors are placed in the Application section, interrupts
are disabled while executing from the Boot Loader section.
(E)LPM executing from the Application section is not
allowed to read from the Boot Loader section. If interrupt
vectors are placed in the Application section, interrupts
are disabled while executing from the Boot Loader section.
Description
–
–
–
–
–
–
ATmega103 compatibility mode
Watchdog Timer always on
Table 117
-
Table 119
describe briefly the functionality of
for details.
Default Value
1
1
1
1
1
1
0 (programmed)
1 (unprogrammed)
for details.
ATmega128
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