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CHAPTER 11 TIMEBASE TIMER
11.6
Precautions when Using Timebase Timer
Precautions when using the timebase timer are shown below.
■
Precautions when Using Timebase Timer
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Clearing interrupt request
To clear the overflow interrupt request flag bit in the timebase timer control register (TBTC: TBOF = 0),
disable interrupts (TBTC: TBIE = 0) or mask the timebase timer interrupt by using the interrupt level mask
register in the processor status.
●
Clearing timebase timer counter
Clearing the timebase timer counter affects the following operations:
•
When the timebase timer is used as the interval timer (interval interrupt).
•
When the watchdog timer is used.
•
When the clock supplied from the timebase timer is used as the operation clock of the PPG timer.
●
Using timebase timer as oscillation stabilization wait time timer
After power on or in the main stop mode, PLL stop mode, and sub clock mode, the oscillation clock stops.
Therefore, when oscillation starts, the timebase timer requires the oscillation stabilization wait time of the
main clock. An appropriate oscillation stabilization wait time must be selected according to the types of
oscillators connected to high-speed oscillation input pins.
Reference:
For details on the oscillation stabilization wait time, see "5.6 Oscillation Stabilization Wait Interval".
●
Resources to which timebase timer supplies clock
•
At transition to operation modes (PLL stop mode, sub clock mode, and main stop mode) in which the
oscillation clock stops, the timebase timer counter is cleared and the timebase timer stops.
•
When the timebase timer counter is cleared, an after-clearing interval time is needed. It may cause the
clock supplied from the timebase timer to have a short High level or a 1/2 cycle longer Low level.
•
The watchdog timer performs normal counting because the watchdog timer counter and timebase timer
counter are cleared simultaneously.
Summary of Contents for F2MCTM-16LX
Page 2: ......
Page 3: ...FUJITSU LIMITED F2MCTM 16LX 16 BIT MICROCONTROLLER MB90360 Series HARDWARE MANUAL ...
Page 4: ......
Page 42: ...26 CHAPTER 1 OVERVIEW ...
Page 70: ...54 CHAPTER 2 CPU ...
Page 134: ...118 CHAPTER 6 CLOCK SUPERVISOR ...
Page 176: ...160 CHAPTER 8 LOW POWER CONSUMPTION MODE ...
Page 194: ...178 CHAPTER 10 I O PORTS ...
Page 252: ...236 CHAPTER 13 16 Bit I O TIMER ...
Page 282: ...266 CHAPTER 14 16 BIT RELOAD TIMER ...
Page 296: ...280 CHAPTER 15 WATCH TIMER ...
Page 386: ...370 CHAPTER 18 8 10 BIT A D CONVERTER ...
Page 426: ...410 CHAPTER 20 LIN UART Figure 20 5 2 ORE Flag Set Timing RDRF ORE Reception data ...
Page 540: ...524 CHAPTER 22 ADDRESS MATCH DETECTION FUNCTION ...
Page 568: ...552 CHAPTER 24 512K BIT FLASH MEMORY ...
Page 633: ...617 APPENDIX B Instructions Table B 9 3 Bit Operation Instruction Map first byte 6CH ...
Page 634: ...618 APPENDIX Table B 9 4 Character String Operation Instruction Map first byte 6EH ...
Page 637: ...621 APPENDIX B Instructions Table B 9 7 ea Instruction 2 first byte 71H ...
Page 638: ...622 APPENDIX Table B 9 8 ea Instruction 3 first byte 72H ...
Page 639: ...623 APPENDIX B Instructions Table B 9 9 ea Instruction 4 first byte 73H ...
Page 640: ...624 APPENDIX Table B 9 10 ea Instruction 5 first byte 74H ...
Page 641: ...625 APPENDIX B Instructions Table B 9 11 ea Instruction 6 first byte 75H ...
Page 642: ...626 APPENDIX Table B 9 12 ea Instruction 7 first byte 76H ...
Page 643: ...627 APPENDIX B Instructions Table B 9 13 ea Instruction 8 first byte 77H ...
Page 644: ...628 APPENDIX Table B 9 14 ea Instruction 9 first byte 78H ...
Page 645: ...629 APPENDIX B Instructions Table B 9 15 MOVEA RWi ea Instruction first byte 79H ...
Page 646: ...630 APPENDIX Table B 9 16 MOV Ri ea Instruction first byte 7AH ...
Page 647: ...631 APPENDIX B Instructions Table B 9 17 MOVW RWi ea Instruction first byte 7BH ...
Page 648: ...632 APPENDIX Table B 9 18 MOV Ri ea Instruction first byte 7CH ...
Page 649: ...633 APPENDIX B Instructions Table B 9 19 MOVW ea Rwi Instruction first byte 7DH ...
Page 650: ...634 APPENDIX Table B 9 20 XCH Ri ea Instruction first byte 7EH ...
Page 651: ...635 APPENDIX B Instructions Table B 9 21 XCHW RWi ea Instruction first byte 7FH ...
Page 664: ...648 APPENDIX ...
Page 665: ...649 INDEX INDEX The index follows on the next page This is listed in alphabetic order ...
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