ATmega128 datasheet(65/386 Pages) ATMEL

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ATmega128 데이터시트(PDF) 65 Page - ATMEL Corporation

부품명	ATmega128

상세설명	8-bit Microcontroller with 128K Bytes In-System Programmable Flash

PDF	386 Pages

Scroll/Zoom	100%

제조업체	ATMEL [ATMEL Corporation]

홈페이지	http://www.atmel.com

Logo

65 / 386 page

2467S–AVR–07/09

ATmega128

• Bit 0 – IVCE: Interrupt Vector Change Enable

The IVCE bit must be written to logic one to enable change of the IVSEL bit. IVCE is cleared by

hardware four cycles after it is written or when IVSEL is written. Setting the IVCE bit will disable

interrupts, as explained in the IVSEL description above. See Code Example below.

Assembly Code Example

Move_interrupts:

; Enable change of interrupt vectors

ldi

r16, (1<<IVCE)

out

MCUCR, r16

; Move interrupts to boot flash section

ldi

r16, (1<<IVSEL)

out

MCUCR, r16

ret

C Code Example

void

Move_interrupts(void)

{

/* Enable change of interrupt vectors */

MCUCR = (1<<IVCE);

/* Move interrupts to boot flash section */

MCUCR = (1<<IVSEL);

}

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