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ATMEGA64-16AI Fiches technique(PDF) 59 Page - ATMEL Corporation

No de pièce ATMEGA64-16AI
Description  8-bit Microcontroller with 64K Bytes In-System Programmable Flash
PDF  393 Pages
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Fabricant  ATMEL [ATMEL Corporation]
Site Internet  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

ATMEGA64-16AI Fiches technique(HTML) 59 Page - ATMEL Corporation

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59
ATmega64(L)
2490L–AVR–10/06
The following code examples show one assembly and one C function for turning off the
WDT. The examples assume that interrupts are controlled (e.g., by disabling interrupts
globally) so that no interrupts will occur during execution of these functions.
Assembly Code Example
WDT_off:
; reset WDT
wdr
in
r16, WDTCR
ldi
r16, (1<<WDCE)|(1<<WDE)
; Write logical one to WDCE and WDE
ori
r16, (1<<WDCE)|(1<<WDE)
out
WDTCR, r16
; Turn off WDT
ldi
r16, (0<<WDE)
out
WDTCR, r16
ret
C Code Example
void
WDT_off(void)
{
/* Reset WDT*/
_WDRC();
/* Write logical one to WDCE and WDE */
WDTCR |= (1<<WDCE) | (1<<WDE);
/* Turn off WDT */
WDTCR = 0x00;
}



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