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M451
May. 4, 2018
Page
438
of
1006
Rev.2.08
M4
51
S
E
RI
E
S
T
E
CH
NICA
L RE
F
E
R
E
NC
E
M
A
NU
A
L
Table 6-13 PWM System Clock Source Control Registers Setting Table
PWM0 system clock
PWM1 system clock
TIMER0
TIMER1
TIMER2
TIMER3
0
1
2
3
4
TIMER0
TIMER1
TIMER2
TIMER3
0
1
2
3
4
ECLKSRC0 (PWM_CLKSRC[2:0])
ECLKSRC0 (PWM_CLKSRC[2:0])
PWM0_CLK0
PWM1_CLK0
Figure 6.9-3 PWM Clock Source Control
Figure 6.9-4 and Figure 6.9-5 illustrate the architecture of PWM independent mode and
complementary mode. No matter
independent mode or complementary mode, paired channels’
(PWM_CH0 and PWM_CH1, PWM_CH2 and PWM_CH3, PWM_CH4 and PWM_CH5) counters
both come from the same clock source and prescaler. When counter count to 0, PERIOD
(PWM_PERIODn[15:0]) or equal to comparator, events will be generated. These events are
passed to corresponding generators to generate PWM pulse, interrupt signal and trigger signal for
EADC/DAC to start conversion. Output control is used to changing PWM pulse output state; brake
function in output control also generates interrupt events. In complementary mode, synchronize
function is available and even channel use odd channel comparator to generate events, free
trigger comparator events only use to generate trigger EADC signals.
PWM System Clock/HCLK
Frequency Ratio
HCLKSEL
(CLK_CLKSEL0[2:0])
HCLKDIV
(CLK_CLKDIV0[3:0])
PWMnSEL (CLK_CLKSEL2[N]),
N Denotes 0 Or 1
1/1
Don’t care
Don’t care
1
2/1
2
1
0
Содержание ARM Cortex NuMicro M451 Series
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Страница 324: ...M451 May 4 2018 Page 324 of 1006 Rev 2 08 M451 SERIES TECHNICAL REFERENCE MANUAL Figure 6 4 18 Checksum Calculation Flow...
Страница 355: ...M451 May 4 2018 Page 355 of 1006 Rev 2 08 M451 SERIES TECHNICAL REFERENCE MANUAL 2 0 Reserved Reserved...
Страница 625: ...M451 May 4 2018 Page 625 of 1006 Rev 2 08 M451 SERIES TECHNICAL REFERENCE MANUAL 00 5 bits 01 6 bits 10 7 bits 11 8 bits...
Страница 721: ...M451 May 4 2018 Page 721 of 1006 Rev 2 08 M451 SERIES TECHNICAL REFERENCE MANUAL the SCL line 1 0 Reserved Reserved...
Страница 1001: ...M451 May 4 2018 Page 1001 of 1006 Rev 2 08 M451 SERIES TECHNICAL REFERENCE MANUAL LQFP 64L 10x10x1 4 mm footprint 2 0 mm 9 2...
Страница 1002: ...M451 May 4 2018 Page 1002 of 1006 Rev 2 08 M451 SERIES TECHNICAL REFERENCE MANUAL LQFP 64L 7x7x1 4 mm footprint 2 0 mm 9 3...
Страница 1003: ...M451 May 4 2018 Page 1003 of 1006 Rev 2 08 M451 SERIES TECHNICAL REFERENCE MANUAL LQFP 48L 7x7x1 4mm footprint 2 0mm 9 4...