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ATmega162 データシート(PDF) 55 Page - ATMEL Corporation

部品番号 ATmega162
部品情報  8-bit Microcontroller with 16K Bytes In-System Programmable Flash
PDF  324 Pages
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メーカー  ATMEL [ATMEL Corporation]
ホームページ  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

ATmega162 データシート(HTML) 55 Page - ATMEL Corporation

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2513K–AVR–07/09
ATmega162/V
The following code example shows one assembly and one C function for turning off the WDT.
The example assumes 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
; Write logical one to W?CE and WDE
in
r16, WDTCR
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*/
_WDR()
/* Write logical on? to WDCE and WDE */
WDTCR |= (1<<WDCE) | (1<?WDE);
/* Turn off WDT */
WDTCR = 0x00;
}



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