DOC7707 datasheet(66/307 Pages) ETC1

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DOC7707 Scheda tecnica(PDF) 66 Page - List of Unclassifed Manufacturers

Il numero della parte	DOC7707

Spiegazioni elettronici	Microcontroller with 8/16K Bytes of ISP Flash and USB Controller

PDF	307 Pages

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Produttore elettronici	ETC1 [List of Unclassifed Manufacturers]

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7707F–AVR–11/10

AT90USB82/162

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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