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ATMEGA8515-16AU Datasheet(PDF) 53 Page - ATMEL Corporation

Part # ATMEGA8515-16AU
Description  8-bit AVR Microcontroller with 8K Bytes In-System Programmable Flash
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Manufacturer  ATMEL [ATMEL Corporation]
Direct Link  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

ATMEGA8515-16AU Datasheet(HTML) 53 Page - ATMEL Corporation

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53
ATmega8515(L)
2512G–AVR–03/05
Interrupts
This section describes the specifics of the interrupt handling as performed in
ATmega8515. For a general explanation of the AVR interrupt handling, refer to “Reset
and Interrupt Handling” on page 12.
Interrupt Vectors in
ATmega8515
Notes:
1. When the BOOTRST Fuse is programmed, the device will jump to the Boot Loader
address at reset, see “Boot Loader Support – Read-While-Write Self-Programming”
on page 164.
2. When the IVSEL bit in GICR is set, Interrupt Vectors will be moved to the start of the
Boot Flash section. The address of each Interrupt Vector will then be the address in
this table added to the start address of the Boot Flash section.
Table 23 shows Reset and Interrupt Vectors placement for the various combinations of
BOOTRST and IVSEL settings. If the program never enables an interrupt source, the
Interrupt Vectors are not used, and regular program code can be placed at these loca-
tions. This is also the case if the Reset Vector is in the Application section while the
Interrupt Vectors are in the Boot section or vice versa.
Table 22. Reset and Interrupt Vectors
Vector No.
Program
Address(2)
Source
Interrupt Definition
1
$000(1)
RESET
External Pin, Power-on Reset, Brown-out
Reset and Watchdog Reset
2
$001
INT0
External Interrupt Request 0
3
$002
INT1
External Interrupt Request 1
4
$003
TIMER1 CAPT
Timer/Counter1 Capture Event
5
$004
TIMER1 COMPA
Timer/Counter1 Compare Match A
6
$005
TIMER1 COMPB
Timer/Counter1 Compare Match B
7
$006
TIMER1 OVF
Timer/Counter1 Overflow
8
$007
TIMER0 OVF
Timer/Counter0 Overflow
9
$008
SPI, STC
Serial Transfer Complete
10
$009
USART, RXC
USART, Rx Complete
11
$00A
USART, UDRE
USART Data Register Empty
12
$00B
USART, TXC
USART, Tx Complete
13
$00C
ANA_COMP
Analog Comparator
14
$00D
INT2
External Interrupt Request 2
15
$00E
TIMER0 COMP
Timer/Counter0 Compare Match
16
$00F
EE_RDY
EEPROM Ready
17
$010
SPM_RDY
Store Program memory Ready


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