ATMEGA128L-8MI Atmel, ATMEGA128L-8MI Datasheet - Page 276
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ATMEGA128L-8MI
Manufacturer Part Number
ATMEGA128L-8MI
Description
IC AVR MCU 128K LV 8MHZ IND64QFN
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA128L-8MI
Core Processor
AVR
Core Size
8-Bit
Speed
8MHz
Connectivity
EBI/EMI, I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
53
Program Memory Size
128KB (64K x 16)
Program Memory Type
FLASH
Eeprom Size
4K x 8
Ram Size
4K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
64-MLF®, 64-QFN
For Use With
ATSTK501 - ADAPTER KIT FOR 64PIN AVR MCU
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
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Entering the Boot
Loader Program
276
ATmega128
Table 108. Boot Lock Bit0 Protection Modes (Application Section)
Note:
Table 109. Boot Lock Bit1 Protection Modes (Boot Loader Section)
Note:
Entering the Boot Loader takes place by a jump or call from the application program. This may
be initiated by a trigger such as a command received via USART, or SPI interface. Alternatively,
the Boot Reset Fuse can be programmed so that the Reset Vector Reset is pointing to the Boot
Flash start address after a reset. In this case, the Boot Loader is started after a reset. After the
application code is loaded, the program can start executing the application code. Note that the
fuses cannot be changed by the MCU itself. This means that once the Boot Reset Fuse is pro-
grammed, the Reset Vector will always point to the Boot Loader Reset and the fuse can only be
changed through the serial or parallel programming interface.
Table 110. Boot Reset Fuse
Note:
BLB0 mode
BLB1 mode
BOOTRST
1
2
3
4
1
2
3
4
1
0
1. “1” means unprogrammed, “0” means programmed
1. “1” means unprogrammed, “0´means programmed
1. “1” means unprogrammed, “0´means programmed
BLB02
BLB12
Reset Address
Reset Vector = Application Reset (address $0000)
Reset Vector = Boot Loader Reset (see
1
1
0
0
1
1
0
0
BLB01
BLB1
1
1
0
0
1
1
0
0
1
(1)
Protection
No restrictions for SPM or 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 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.
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.
Protection
No restrictions for SPM or LPM accessing the Application
section.
SPM is not allowed to write to the Application section.
SPM is not allowed to write to the Application section, and
LPM executing from the Boot Loader section is not
allowed to read from the Application section. If interrupt
vectors are placed in the Boot Loader section, interrupts
are disabled while executing from the Application section.
LPM executing from the Boot Loader section is not
allowed to read from the Application section. If interrupt
vectors are placed in the Boot Loader section, interrupts
are disabled while executing from the Application section.
Table 112 on page
(1)
(1)
284)
2467V–AVR–02/11
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