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參數(shù)資料
| 型號： | R5F64211KFB |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 32-BIT, FLASH, 64 MHz, MICROCONTROLLER, PQFP100 |
| 封裝： | 14 X 14 MM, 0.50 MM PITCH, PLASTIC, LQFP-100 |
| 文件頁數(shù)： | 23/50頁 |
| 文件大小： | 777K |
| 代理商： | R5F64211KFB |
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102
ATmega165A/PA/325A/PA/3250A/PA/645A/P/6450A/P [DATASHEET]
8285E–AVR–02/2013
Note:
The assembly code example requires that the r17:r16 register pair contains the value to be written to TCNT1.
16.3.1
Reusing the Temporary High Byte Register
If writing to more than one 16-bit register where the high byte is the same for all registers written, then the high byte
only needs to be written once. However, note that the same rule of atomic operation described previously also
applies in this case.
16.4
Timer/Counter Clock Sources
The Timer/Counter can be clocked by an internal or an external clock source. The clock source is selected by the
Clock Select logic which is controlled by the Clock Select (CS12:0) bits located in the Timer/Counter control Regis-
ter B (TCCR1B). For details on clock sources and prescaler, see ”Timer/Counter0 and Timer/Counter1 prescalers”
16.5
Counter Unit
The main part of the 16-bit Timer/Counter is the programmable 16-bit bi-directional counter unit. Figure 16-2 shows
a block diagram of the counter and its surroundings.
Assembly code example (1)
TIM16_WriteTCNT
1:
; Save global interrupt flag
in
r18,SREG
; Disable interrupts
cli
; Set TCNT
1 to r17:r16
out
TCNT
1H,r17
out
TCNT
1L,r16
; Restore global interrupt flag
out
SREG,r18
ret
C code example
void
TIM16_WriteTCNT
1( unsigned int i )
{
unsigned char
sreg;
unsigned int
i;
/* Save global interrupt flag */
sreg = SREG;
/* Disable interrupts */
__disable_interrupt();
/* Set TCNT
1 to i */
TCNT
1 = i;
/* Restore global interrupt flag */
SREG = sreg;
}
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| R5F64211LFB | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:RENESAS MCU |
| R5F64212JFB | 制造商:Renesas Electronics Corporation 功能描述: |
| R5F64212KFB | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:RENESAS MCU |
| R5F64212LFB | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:RENESAS MCU |
| R5F64213JFB | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:RENESAS MCU |
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