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ATMEGA8515-16AU Datasheet(PDF) 54 Page - ATMEL Corporation |
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ATMEGA8515-16AU Datasheet(HTML) 54 Page - ATMEL Corporation |
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54 / 254 page  54 ATmega8515(L) 2512G–AVR–03/05 Note: 1. The Boot Reset Address is shown in Table 78 on page 175. For the BOOTRST Fuse “1” means unprogrammed while “0” means programmed. The most typical and general program setup for the Reset and Interrupt Vector Addresses in ATmega8515 is: Address Labels Code Comments $000 rjmp RESET ; Reset Handler $001 rjmp EXT_INT0 ; IRQ0 Handler $002 rjmp EXT_INT1 ; IRQ1 Handler $003 rjmp TIM1_CAPT ; Timer1 Capture Handler $004 rjmp TIM1_COMPA ; Timer1 Compare A Handler $005 rjmp TIM1_COMPB ; Timer1 Compare B Handler $006 rjmp TIM1_OVF ; Timer1 Overflow Handler $007 rjmp TIM0_OVF ; Timer0 Overflow Handler $008 rjmp SPI_STC ; SPI Transfer Complete Handler $009 rjmp USART_RXC ; USART RX Complete Handler $00a rjmp USART_UDRE ; UDR0 Empty Handler $00b rjmp USART_TXC ; USART TX Complete Handler $00c rjmp ANA_COMP ; Analog Comparator Handler $00d rjmp EXT_INT2 ; IRQ2 Handler $00e rjmp TIM0_COMP ; Timer0 Compare Handler $00f rjmp EE_RDY ; EEPROM Ready Handler $010 rjmp SPM_RDY ; Store Program memory Ready Handler $011 RESET: ldi r16,high(RAMEND); Main program start $012 out SPH,r16 ; Set Stack Pointer to top of RAM $013 ldi r16,low(RAMEND) $014 out SPL,r16 $015 sei ; Enable interrupts $016 <instr> xxx ... ... ... Table 23. Reset and Interrupt Vectors Placement(1) BOOTRST IVSEL Reset Address Interrupt Vectors Start Address 1 0 $0000 $0001 1 1 $0000 Boot Reset Address + $0001 0 0 Boot Reset Address $0001 0 1 Boot Reset Address Boot Reset Address + $0001 |
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