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CHAPTER 16 PWC Timer
Figure 16.6-2 Timer Operation (Reload Mode)
■
Pulse-width Measurement Function
The pulse-width measurement function calculates the time between the specified events related to the input
pulse.
When this function is activated, a count is started after the specified count start edge is input. If the counter
is cleared to "0000
H
", a count is started when the start edge is detected, then the stop edge is detected. The
count value during this period is held in the register as the pulse width.
When the measurement terminates or an overflow occurs, an interrupt request can be generated. When the
measurement is completed, the following occurs:
•
Single measurement mode
The operation is discontinued (see Figure 16.6-3).
•
Continuous measurement mode
The timer value is transferred to the buffer register and the timer is in free-run state until the next edge is
input (see Figure 16.6-4).
FFFF
H
0000
H
Overflow
Overflow
Time
Timer count value
Overflow
Overflow
Overflow
Reload
PWC write value
OVIR flag setting
Write to PWC
Timer starts
Restart
Timer stop
POUT bit
If the timer is started at L level, the level is not toggled when the timer is restarted
(except when an overflow occurs simultaneously)
(Restart is invalid)
Reload
Reload
Reload
Reload
Reload
Reload
Содержание MB90460 Series
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Страница 41: ...22 CHAPTER 1 OVERVIEW ...
Страница 45: ...26 CHAPTER 2 NOTES ON HANDLING DEVICES ...
Страница 83: ...64 CHAPTER 3 CPU ...
Страница 95: ...76 CHAPTER 4 RESET ...
Страница 107: ...88 CHAPTER 5 CLOCK ...
Страница 131: ...112 CHAPTER 6 LOW POWER CONSUMPTION MODE ...
Страница 175: ...156 CHAPTER 7 INTERRUPT ...
Страница 181: ...162 CHAPTER 8 MODE SETTING ...
Страница 223: ...204 CHAPTER 9 I O PORT ...
Страница 237: ...218 CHAPTER 10 TIME BASE TIMER ...
Страница 247: ...228 CHAPTER 11 WATCHDOG TIMER ...
Страница 275: ...256 CHAPTER 12 16 BIT RELOAD TIMER ...
Страница 373: ...354 CHAPTER 14 MULTI FUNCTIONAL TIMER ...
Страница 485: ...466 CHAPTER 16 PWC Timer ...
Страница 531: ...512 CHAPTER 17 UART ...
Страница 559: ...540 CHAPTER 19 DELAYED INTERRUPT GENERATOR MODULE ...
Страница 589: ...570 CHAPTER 20 8 10 BIT A D CONVERTER ...
Страница 601: ...582 CHAPTER 21 ROM CORRECTION FUNCTION ...
Страница 633: ...614 CHAPTER 23 512K 1024K BIT FLASH MEMORY ...
Страница 645: ...626 CHAPTER 24 EXAMPLE OF F2 MC 16LX MB90F462 F462A F463A CONNECTION FOR SERIAL WRITING ...
Страница 715: ...696 APPENDIX ...
Страница 716: ...697 INDEX INDEX The index follows on the next page This is listed in alphabetic order ...
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