A000047 Arduino, A000047 Datasheet - Page 336
A000047
Manufacturer Part Number
A000047
Description
MCU, MPU & DSP Development Tools Mega2560
Manufacturer
Arduino
Series
-r
Type
MCUr
Specifications of A000047
Processor To Be Evaluated
ATmega2560
Interface Type
USB, I2C, SPI
Dimensions
4 in x 2.1 in
Operating Supply Voltage
5 V
Contents
Board
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With/related Products
ATmega2560
- Current page: 336 of 444
- Download datasheet (10Mb)
29.2
2549M–AVR–09/10
Fuse Bits
Table 29-2.
Notes:
The ATmega640/1280/1281/2560/2561 has three Fuse bytes.
page 337
Fuse bytes. Note that the fuses are read as logical zero, “0”, if they are programmed.
Table 29-3.
Note:
BLB1 Mode
Extended Fuse Byte
BODLEVEL2
BODLEVEL1
BODLEVEL0
1
2
3
4
1. Program the Fuse bits and Boot Lock bits before programming the LB1 and LB2.
2. “1” means unprogrammed, “0” means programmed.
See
Memory Lock Bits
describe briefly the functionality of all the fuses and how they are mapped into the
“System and Reset Characteristics” on page 372
–
–
–
–
–
Lock Bit Protection Modes
Extended Fuse Byte
BLB12
(Note:)
(Note:)
(Note:)
1
1
0
0
BLB11
1
0
0
1
Bit No
ATmega640/1280/1281/2560/2561
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.
Brown-out Detector trigger level
Brown-out Detector trigger level
Brown-out Detector trigger level
(1)(2)
(Continued)
Description
–
–
–
–
–
for BODLEVEL Fuse decoding.
Table 29-3
through
1 (unprogrammed)
1 (unprogrammed)
1 (unprogrammed)
Default Value
Table 29-5 on
1
1
1
1
1
336
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