參數(shù)資料
型號: R5F6418JADFE
元件分類: 微控制器/微處理器
英文描述: MICROCONTROLLER, PQFP176
封裝: 24 X 24 MM, 0.50 MM PITCH, PLASTIC, LQFP-176
文件頁數(shù): 21/128頁
文件大?。?/td> 922K
代理商: R5F6418JADFE
119
ATmega48PA/88PA/168PA [DATASHEET]
9223F–AVR–04/14
Bit 4:3 – WGM13:2: Waveform Generation Mode
See TCCR1A register description.
Bit 2:0 – CS12:0: Clock Select
The three clock select bits select the clock source to be used by the Timer/Counter, see Figure 16-10 on page 114 and
If external pin modes are used for the Timer/Counter1, transitions on the T1 pin will clock the counter even if the pin is
configured as an output. This feature allows software control of the counting.
16.11.3 TCCR1C – Timer/Counter1 Control Register C
Bit 7 – FOC1A: Force Output Compare for Channel A
Bit 6 – FOC1B: Force Output Compare for Channel B
The FOC1A/FOC1B bits are only active when the WGM13:0 bits specifies a non-PWM mode. When writing a logical one to
the FOC1A/FOC1B bit, an immediate compare match is forced on the waveform generation unit. The OC1A/OC1B output is
changed according to its COM1x1:0 bits setting. Note that the FOC1A/FOC1B bits are implemented as strobes. Therefore it
is the value present in the COM1x1:0 bits that determine the effect of the forced compare.
A FOC1A/FOC1B strobe will not generate any interrupt nor will it clear the timer in clear timer on compare match (CTC)
mode using OCR1A as TOP. The FOC1A/FOC1B bits are always read as zero.
Table 16-6. Clock Select Bit Description
CS12
CS11
CS10
Description
0
No clock source (Timer/Counter stopped).
0
1
clkI/O/1 (no prescaling)
0
1
0
clkI/O/8 (from prescaler)
0
1
clkI/O/64 (from prescaler)
1
0
clkI/O/256 (from prescaler)
1
0
1
clkI/O/1024 (from prescaler)
1
0
External clock source on T1 pin. Clock on falling edge.
1
External clock source on T1 pin. Clock on rising edge.
Bit
7
6
5
4
3
2
1
0
FOC1A
FOC1B
TCCR1C
Read/Write
R/W
R
Initial Value
0
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