ML620Q503/Q504 User's Manual
Chapter 9 Function Timer(FTM)
FEUL620Q504 9–31
9.3.2 Counter Operation
The internal counter of FTM operates in the same way in all the modes.
It counts up until the setting value of the FTMn period register (FTnP).
At overflow in auto-reload mode (FTnOST bit of the FTMn mode register (FTnMOD) is "0"), the counter is
cleared and continues counting again. At overflow in one-shot mode (FTnOST bit of FTnMOD is "1" and
FTnIPE bit of FTnINTE is “1”), the counter is cleared and stops counting.
The software or trigger event can start/stop counting.
9.3.2.1 Starting/Stopping Counting by Software
When FTnRUN bit of the FTMn control register 0 (FTnCON0) is set to "1", the counter starts.
In one-shot mode (FTnOST bit of the FTMn mode register (FTnMOD) is "1"), FTnRUN bit is automatically set
to "0" when the counter stops due to overflow.
If the counter is operating (FTnSTAT bit of the FTMn control register 1 (FTnCON1) is "1"), the counter stops
when FTnRUN is set to "0". At this time, the counter keeps the value when it stops. When FTnRUN bit is set to
"1" again, the counter continues from the stopped value.
To clear the counter, write to the FTMn counter register (FTnC) when it is not operating. (This written data is
meaningless.)
9.3.2.2 Starting/Stopping Counting by Trigger Event
When FTnGTEN bit of the FIMTERn control register 0 (FTnCON0) is set to "1", the counter is made
controllable by triggers.
Set the FTMn trigger setting register 0 and 1 (FTnTRG0, FTnTRG1) to select a trigger and so on.
The trigger event source can be selected from the external interrupts, the timer interrupts, and another FTM
triggers.
The counter start, counter stop, or counter start/ stop can be selected by selecting a trigger event.
Содержание LAPIS SEMICONDUCTOR ML620Q503
Страница 2: ...ML620Q503 Q504 User s Manual Issue Date Apr 16 2015 FEUL620Q504 01...
Страница 18: ...Chapter 1 Overview...
Страница 32: ...Chapter 2 CPU and Memory Space...
Страница 44: ...Chapter 3 Reset Function...
Страница 50: ...Chapter 4 Power Management...
Страница 70: ...Chapter 5 Interrupts...
Страница 134: ...Chapter 6 Clock Generation Circuit...
Страница 161: ...Chapter 7 Time Base Counter...
Страница 170: ...Chapter 8 Timers...
Страница 183: ...Chapter 9 Function Timer FTM...
Страница 231: ...Chapter 10 Watchdog Timer...
Страница 239: ...Chapter 11 Synchronous Serial Port SSIO...
Страница 251: ...Chapter 12 Synchronous Serial Port with FIFO SSIOF...
Страница 283: ...Chapter 13 UART...
Страница 303: ...Chapter 14 UART with FIFO UARTF...
Страница 327: ...Chapter 15 I2 C Bus Interface...
Страница 344: ...Chapter 16 Port XT...
Страница 350: ...Chapter 17 Port 0...
Страница 361: ...Chapter 18 Port 1...
Страница 368: ...Chapter 19 Port2...
Страница 379: ...Chapter 20 Port 3...
Страница 395: ...Chapter 21 Port 4...
Страница 410: ...Chapter 22 Port 5...
Страница 426: ...Chapter 23 Melody Driver...
Страница 439: ...Chapter 24 RC Oscillation type A D Converter RC ADC...
Страница 462: ...Chapter 25 Successive Approximation Type A D Converter SA ADC...
Страница 479: ...Chapter 26 Analog Comparator...
Страница 489: ...Chapter 27 Flash Memory Control...
Страница 505: ...Chapter 28 Voltage Level Supervisor VLS...
Страница 517: ...Chapter 29 LLD circuit...
Страница 519: ...Chapter 30 On Chip Debug Function...
Страница 522: ...Appendixes...
Страница 552: ...Revision History...