255
CHAPTER 14 16-BIT RELOAD TIMER
■
Operation as 16-bit Timer Register Underflows
When the value of the 16-bit timer register (TMR) is decremented from "0000
H
" to "FFFF
H
" during the
TMR count operation, an underflow occurs.
•
When an underflow occurs, the underflow generating flag bit in the timer control status register
(TMCSR:UF) is set to 1.
•
When the underflow interrupt enable bit in the timer control status register (TMCSR:INTE) is set to 1,
an underflow interrupt is generated.
•
The reload operation when an underflow occurs is set by the reload select bit in the timer control status
register (TMCSR:RELD).
[One-shot mode (TMCSR:RELD = 0)]
When an underflow occurs, the count operation of the TMR is stopped, entering the start trigger input wait
state. When the next start trigger is inputted, the TMR count operation is restarted.
In the one-shot mode, a rectangular wave is outputted from the TOT pin during the TMR count operation.
The pin output level select bit in the timer control status register (TMCSR:OUTL) can be set to select the
level (High or Low) of a rectangular wave.
[Reload mode (TMCSR:RELD = 1)]
When an underflow occurs, the value set in the 16-bit reload timer register (TMRLR) is reloaded to the
TMR, continuing the TMR count operation.
In the reload mode, a toggle wave inverting the output level of the TOT pin is outputted each time an
underflow occurs during the TMR count operation. The pin output level select bit in the timer control status
register (TMCSR:OUTL) can be set to select the level (High or Low) of a toggle wave as the 16-bit reload
timer is started.
■
Operation in Internal Clock Mode
In the internal clock mode, the operation mode select bits in the timer control status register
(TMCSR:MOD2 to MOD0) can be used to select the operation mode. Disable the timer operation by
setting the timer operation enable bit in the timer control status register (TMCSR:CNTE to 0).
[Software trigger mode (MOD2 to MOD0="000
B
")]
If the software trigger mode is set, start the 16-bit reload timer by setting the software trigger bit in the
timer control status register (TMCSR:TRG) to 1. When the 16-bit reload timer is started, the value set in
the TMRLR is reloaded to the TMR, starting the TMR count operation.
Note:
When both the timer operation enable bit in the timer control status register (TMCSR:CNTE) and the
software trigger bit in the timer control status register (TMCSR:TRG) are set to 1, the 16-bit reload timer
and the count operation of the TMR are started 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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