AT90SCR100 datasheet(65/433 Pages) ATMEL

65 / 433 page

TPR0327AY–SMS–30Jan09

AT90SCR100

When the BOOTRST Fuse is unprogrammed, the Boot section size set to 8K bytes and the

IVSEL bit in the MCUCR Register is set before any interrupts are enabled, the most typical and

general program setup for the Reset and Interrupt Vector Addresses is:

Address

Labels Code

Comments

0x00000

RESET: ldi

r16,high(RAMEND); Main program start

0x00001

out

SPH,r16

; Set Stack Pointer to top of RAM

0x0E

jmp

PCINT2

; PCINT2 Handler

0x10

jmp

WDT

; Watchdog Timeout Handler

0x12

jmp

TIM2_COMPA

; Timer2 CompareA Handler

0x14

jmp

TIM2_COMPB

; Timer2 CompareB Handler

0x16

jmp

TIM2_OVF

; Timer2 Overflow Handler

0x18

jmp

TIM1_CAPT

; Timer1 Capture Handler

0x1A

jmp

TIM1_COMPA

; Timer1 CompareA Handler

0x1C

jmp

TIM1_COMPB

; Timer1 CompareB Handler

0x1E

jmp

TIM1_OVF

; Timer1 Overflow Handler

0x20

jmp

TIM0_COMPA

; Timer0 CompareA Handler

0x22

jmp

TIM0_COMPB

; Timer0 CompareB Handler

0x24

jmp

TIM0_OVF

; Timer0 Overflow Handler

0x26

jmp

SPI_STC

; SPI Transfer Complete

0x28

jmp

USART0_RXC

; USART0 RX Complete Handler

0x2A

jmp

USART0_UDRE

; USART0,UDR Empty Handler

0x2C

jmp

USART0_TXC

; USART0 TX Complete Handler

0x2E

jmp

SUPPLY_MON

; Vcc dropped too low

0x30

jmp

NO_VECT

; Vector Forbidden

0x32

jmp

EE_RDY

; EEPROM Ready Handler

0x34

jmp

TWI

; 2-wire Serial Handler

0x36

jmp

SPM_RDY

; SPM Ready Handler

0x38

jmp

KEYBOARD

; Keyboard Handler

0x3A

jmp

AES

; Crypto AES Handler

0x3C

jmp

HSSPI

; HighSPI IT Handler

0x3E

jmp

USB_Endpoint

; USB Endpoint IT Handler

0x40

jmp

USB_Protocol

; USB Protocol IT Handler

0x42

jmp

SCIB

; Smart Card Interface IT

0x44

jmp

USB_Host_Ctl

; USB Host Controller IT

0x46

jmp

USB_Host_Pipe

; USB Host Pipe IT

0x48

jmp

CPRES

; Card inserted/removed

0x4A

jmp

PCINT3

; PCINT3 Handler

;

0x3E

RESET:

ldi

r16, high(RAMEND)

; Main program start

0x3F

out

SPH,r16

; Set Stack Pointer to top of

RAM

0x40

ldi

r16, low(RAMEND)

0x41

out

SPL,r16

0x42

sei

; Enable interrupts

0x43

<instr>

xxx

...

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