ATmega16 datasheet(46/315 Pages) ATMEL

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ATMEGA16 데이터시트(PDF) 46 Page - ATMEL Corporation

부품명	ATMEGA16

상세설명	8-bit AVR Microcontroller with 16K Bytes In-System Programmable Flash

PDF	315 Pages

Scroll/Zoom	100%

제조업체	ATMEL [ATMEL Corporation]

홈페이지	http://www.atmel.com

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46 / 315 page

ATmega16(L)

2466E–AVR–10/02

• 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

GICR, r16

; Move interrupts to boot Flash section

ldi

r16, (1<<IVSEL)

out

GICR, r16

ret

C Code Example

void

Move_interrupts(void)

{

/* Enable change of interrupt vectors */

GICR = (1<<IVCE);

/* Move interrupts to boot Flash section */

GICR = (1<<IVSEL);

}

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