參數(shù)資料
型號: R5F21274JFP
元件分類: 微控制器/微處理器
英文描述: 16-BIT, FLASH, 20 MHz, MICROCONTROLLER, PQFP32
封裝: 7 X 7 MM, 0.80 MM PITCH, PLASTIC, LQFP-32
文件頁數(shù): 30/52頁
文件大?。?/td> 620K
代理商: R5F21274JFP
53
ATmega165A/PA/325A/PA/3250A/PA/645A/P/6450A/P [DATASHEET]
8285E–AVR–02/2013
When the BOOTRST Fuse is unprogrammed, the Boot section size set to 2Kbytes 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
0x0000
RESET: ldi
r16,high(RAMEND); Main program start
0x0001
out
SPH,r16
; Set Stack Pointer to top of RAM
0x0002
ldi
r16,low(RAMEND)
0x0003
out
SPL,r16
0x0004
sei
; Enable interrupts
0x0005
<instr>
xxx
;
.org 0x1C02
0x1C02
jmp
EXT_INT0
; IRQ0 Handler
0x1C04
jmp
PCINT0
; PCINT0 Handler
...
;
0x1C2C
jmp
SPM_RDY
; Store Program Memory Ready Handler
When the BOOTRST Fuse is programmed and the Boot section size set to 2Kbytes, the most typical and general
program setup for the Reset and Interrupt Vector Addresses is:
Address
Labels Code
Comments
.org 0x0002
0x0002
jmp
EXT_INT0
; IRQ0 Handler
0x0004
jmp
PCINT0
; PCINT0 Handler
...
;
0x002C
jmp
SPM_RDY
; Store Program Memory Ready Handler
;
.org 0x1C00
0x1C00
RESET: ldi
r16,high(RAMEND); Main program start
0x1C01
out
SPH,r16
; Set Stack Pointer to top of RAM
0x1C02
ldi
r16,low(RAMEND)
0x1C03
out
SPL,r16
0x1C04
sei
; Enable interrupts
0x1C05
<instr>
xxx
When the BOOTRST Fuse is programmed, the Boot section size set to 2Kbytes 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
;
.org 0x1C00
0x1C00
jmp
RESET
; Reset handler
0x1C02
jmp
EXT_INT0
; IRQ0 Handler
0x1C04
jmp
PCINT0
; PCINT0 Handler
...
;
0x1C2C
jmp
SPM_RDY
; Store Program Memory Ready Handler
;
0x1C2E
RESET: ldi
r16,high(RAMEND); Main program start
0x1C2F
out
SPH,r16
; Set Stack Pointer to top of RAM
0x1C30
ldi
r16,low(RAMEND)
0x1C31
out
SPL,r16
0x1C32
sei
; Enable interrupts
0x1C33
<instr>
xxx
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