參數(shù)資料
型號(hào): MR80C32E-16P883
廠商: ATMEL CORP
元件分類: 微控制器/微處理器
英文描述: 8-BIT, 16 MHz, MICROCONTROLLER, CQCC44
封裝: LCC-44
文件頁數(shù): 112/176頁
文件大?。?/td> 2962K
代理商: MR80C32E-16P883
40
2535J–AVR–08/10
ATtiny13
tion, the application software should always clear the Watchdog System Reset Flag (WDRF)
and the WDE control bit in the initialisation routine, even if the Watchdog is not in use.
The following code example shows one assembly and one C function for changing the time-out
value of the Watchdog Timer.
Note:
1. The example code assumes that the part specific header file is included.
The Watchdog Timer should be reset before any change of the WDP bits, since a change in the
WDP bits can result in a time-out when switching to a shorter time-out period.
Assembly Code Example(1)
WDT_Prescaler_Change:
; Turn off global interrupt
cli
; Reset Watchdog Timer
wdr
; Start timed sequence
in
r16, WDTCR
ori
r16, (1<<WDCE) | (1<<WDE)
out
WDTCR, r16
; --
Got four cycles to set the new values from here -
; Set new prescaler(time-out) value = 64K cycles (~0.5 s)
ldi
r16, (1<<WDE) | (1<<WDP2) | (1<<WDP0)
out
WDTCR, r16
; --
Finished setting new values, used 2 cycles -
; Turn on global interrupt
sei
ret
C Code Example(1)
void WDT_Prescaler_Change(void)
{
__disable_interrupt();
__watchdog_reset();
/* Start timed sequence */
WDTCR |= (1<<WDCE) | (1<<WDE);
/* Set new prescaler(time-out) value = 64K cycles (~0.5 s) */
WDTCR = (1<<WDE) | (1<<WDP2) | (1<<WDP0);
__enable_interrupt();
}
相關(guān)PDF資料
PDF描述
MQ83C154DCXXX-25P883D 8-BIT, MROM, 25 MHz, MICROCONTROLLER, CQFP44
MR80C52EXXX-25:RD 8-BIT, MROM, 25 MHz, MICROCONTROLLER, CQCC44
MIP7365-450F17I 64-BIT, 450 MHz, MICROPROCESSOR, CQFP208
MIP7365-450B1M 64-BIT, 450 MHz, MICROPROCESSOR, PBGA256
MK1574-01BSITR 1574 SERIES, PLL BASED CLOCK DRIVER, 4 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PDSO16
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MR80C51BH 制造商:ROCHESTER 制造商全稱:ROCHESTER 功能描述:CMOS SINGLE - CHIP 8-BIT MICROCOMPUTER 64K program Memory Space
MR80C86 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:CMOS 16-Bit Microprocessor
MR80C86/B 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Harris Corporation 功能描述:Microprocessor, 16 Bit, 44 Pin, Ceramic, LCC
MR80C86-2 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:CMOS 16-Bit Microprocessor
MR80C86-2/883 制造商:Rochester Electronics LLC 功能描述:- Bulk