ATMEGA8515L-8JJ Atmel, ATMEGA8515L-8JJ Datasheet - Page 169
![IC MCU AVR 8K 5V 8MHZ 44-PLCC](/photos/6/70/67043/453-44-plcc_sml.jpg)
ATMEGA8515L-8JJ
Manufacturer Part Number
ATMEGA8515L-8JJ
Description
IC MCU AVR 8K 5V 8MHZ 44-PLCC
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA8515L-8JJ
Core Processor
AVR
Core Size
8-Bit
Speed
8MHz
Connectivity
EBI/EMI, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
35
Program Memory Size
8KB (4K x 16)
Program Memory Type
FLASH
Eeprom Size
512 x 8
Ram Size
512 x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
44-PLCC
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Data Converters
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Entering the Boot Loader
Program
2512K–AVR–01/10
Table 74. Boot Lock Bit0 Protection Modes (Application Section)
Note:
Table 75. 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 inter-
face. Alternatively, the Boot Reset Fuse can be programmed so that the Reset Vector 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 execut-
ing the application code. Note that the fuses cannot be changed by the MCU itself. This
means that once the Boot Reset Fuse is programmed, 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 76. 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 Table 78 on page 177)
1
1
0
0
1
1
0
0
BLB01
BLB11
1
0
0
1
1
0
0
1
(1)
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.
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
Protection
ATmega8515(L)
(1)
(1)
169
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