854
Chapter 41 Up/Down Counter
5.Operation
5.7 Reload Timing
The next time when Up/Down Counter counts down below “0000”, an underflow occurs (an interrupt request is
made) and then reloading is performed.
Note: If clear and reload operations occur at the same time, clear takes precedence.
5.8 Writing a Value to Counter
(1) Counting of Up/Down Counter is disabled.
(2) A value is written to PCR.
(3) “1” is written to the count write bit CTUT.
(4) A value is transferred from the reload/compare register RCR to Up/Down Counter.
Countdown
Reload timing
0066
H
Underflow
0001
H
0066
H
0064
H
0000
H
0065
H
Count value
Compare value
RCR
Up/Down Counter
CSTR
CTUT
(3)
(1)
(4)
(2)
XXH
67 H
67 H
(3)
(1)
(4)
(2)
H
67
Содержание FR Family FR60 Lite
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Страница 170: ...154 Chapter 9 Reset 10 Caution ...
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Страница 232: ...216 Chapter 14 PLL Interface 7 Caution ...
Страница 236: ...220 Chapter 15 CAN Clock Prescaler 3 Registers ...
Страница 288: ...272 Chapter 19 Timebase Timer 8 Caution ...
Страница 314: ...298 Chapter 22 Main Oscillation Stabilisation Timer 8 Caution ...
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Страница 348: ...332 Chapter 25 External Interrupt 8 Caution ...
Страница 398: ...382 Chapter 26 DMA Controller 6 DMA External Interface ...
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Страница 549: ...533 Chapter 31 External Bus 2 External Bus Interface Registers is set to the high impedance state ...
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Страница 706: ...690 Chapter 33 I2C Controller 4 Programming Flow Charts ...
Страница 748: ...732 Chapter 34 CAN Controller 4 CAN Application ...
Страница 762: ...746 Chapter 35 Free Run Timer 8 Caution ...
Страница 790: ...774 Chapter 37 Output Compare 8 Caution ...
Страница 838: ...822 Chapter 39 Programmable Pulse Generator 8 Caution ...
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Страница 886: ...870 Chapter 42 Sound Generator 3 Registers ...
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