參數(shù)資料
型號： R5F3650NNFB
元件分類： 微控制器/微處理器
英文描述： MICROCONTROLLER, PQFP100
封裝： 14 X 14 MM, 0.50 MM PITCH, LQFP-100
文件頁數(shù)： 35/81頁
文件大?。?/td> 879K
代理商： R5F3650NNFB
53
4317K–AVR–03/2013
AT90PWM2/3/2B/3B
The following code example shows one assembly and one C function for turning off the Watch-
dog Timer. The example assumes that interrupts are controlled (e.g. by disabling interrupts
globally) so that no interrupts will occur during the execution of these functions.
Note:
1. The example code assumes that the part specific header file is included.
Note: If the Watchdog is accidentally enabled, for example by a runaway pointer or brown-out
condition, the device will be reset and the Watchdog Timer will stay enabled. If the code is not
set up to handle the Watchdog, this might lead to an eternal loop of time-out resets. To avoid this
situation, the application software should always clear the Watchdog System Reset Flag
(WDRF) and the WDE control bit in the initialization routine, even if the Watchdog is not in use.
Assembly Code Example(1)
WDT_off:
; Turn off global interrupt
cli
; Reset Watchdog Timer
wdr
; Clear WDRF in MCUSR
in
r16, MCUSR
andi
r16, (0xff & (0<<WDRF))
out
MCUSR, r16
; Write logical one to WDCE and WDE
; Keep old prescaler setting to prevent unintentional time-out
lds
r16, WDTCSR
ori
r16, (1<<WDCE) | (1<<WDE)
sts
WDTCSR, r16
; Turn off WDT
ldi
r16, (0<<WDE)
sts
WDTCSR, r16
; Turn on global interrupt
sei
ret
C Code Example
void WDT_off(void)
{
__disable_interrupt();
__watchdog_reset();
/* Clear WDRF in MCUSR */
MCUSR &= ~(1<<WDRF);
/* Write logical one to WDCE and WDE */
/* Keep old prescaler setting to prevent unintentional time-out */
WDTCSR |= (1<<WDCE) | (1<<WDE);
/* Turn off WDT */
WDTCSR = 0x00;
__enable_interrupt();
}
相關PDF資料
PDF描述
R5F36B3ENNP 16-BIT, FLASH, 16 MHz, MICROCONTROLLER, PQCC64
R5F36CAKNFA 16-BIT, FLASH, 32 MHz, MICROCONTROLLER, PQFP100
R5F36CAKNFB 16-BIT, FLASH, 32 MHz, MICROCONTROLLER, PQFP100
R5F36CA6DFA 16-BIT, FLASH, 32 MHz, MICROCONTROLLER, PQFP100
R5F36CA6DFB 16-BIT, FLASH, 32 MHz, MICROCONTROLLER, PQFP100
相關代理商/技術(shù)參數(shù)
參數(shù)描述
R5F3650RDFA 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:RENESAS MCU
R5F3650RDFB 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:RENESAS MCU
R5F3650RNFA 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:RENESAS MCU
R5F3650RNFB 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:This MCU consumes low power, and supports operating modes
R5F3650TDFA 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:RENESAS MCU
發(fā)布緊急采購，3分鐘左右您將得到回復。

采購需求

(若只采購一條型號，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

*型號 *數(shù)量 廠商 批號 封裝
添加更多采購

我的聯(lián)系方式

*
*
*