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ATmega16 Datenblatt(PDF) 44 Page - ATMEL Corporation

Teilenummer ATmega16
Bauteilbeschribung  8-bit Microcontroller with 16K Bytes In-Syustem Programmable Flash
PDF  357 Pages
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Hersteller  ATMEL [ATMEL Corporation]
Direct Link  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

ATmega16 Datenblatt(HTML) 44 Page - ATMEL Corporation

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2466S–AVR–05/09
ATmega16(L)
The following code example shows one assembly and one C function for turning off the WDT.
The example assumes that interrupts are controlled (for example 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 WDTOE and WDE
in
r16, WDTCR
ori
r16, (1<<WDTOE)|(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 one to WDTOE and WDE */
WDTCR |= (1<<WDTOE) | (1<<WDE);
/* Turn off WDT */
WDTCR = 0x00;
}



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