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CHAPTER 8 LOW-POWER CONSUMPTION MODE
8.5.2
Watch Mode
This mode causes all functions, excluding the subclock (SCLK), watch timer, and low
voltage detection circuit, to stop. Main clock and PLL clock stop.
■
Switching to the Watch Mode
When 0 is written to the TMD bit of the low-power consumption mode control register (LPMCR) in the
subclock run mode, switching to the watch mode occurs.
●
Data retention function
In the watch mode, the contents of the dedicated registers, such as accumulators, and the internal RAM are
retained.
●
Operation during an interrupt request
Writing 1 in the TMD bit of the low-power consumption mode control register (LPMCR) during an
interrupt request does not trigger a switch to the watch mode.
If the CPU is not ready to accept any interrupt request, the instruction next to currently executing
instruction is executed. If the CPU is ready to accept any interrupt request, an interrupt operation
immediately branches to the interrupt processing routine.
●
Status of pins
Whether the I/O pins in the watch mode retain the state they had immediately before switching to the watch
mode or go to the high-impedance state can be controlled by the SPL bit of the low-power consumption
mode control register (LPMCR).
Note:
To set the pin that is shared the peripheral function and port to the high impedance in the watch mode,
disable the output of peripheral function, then set the TMD bit of the low-power consumption mode
control register (LPMCR) to "0".
■
Return from Watch Mode
The watch mode is cancelled by a reset factor or when an interrupt is generated.
●
Return by reset factor
When the watch mode is cancelled by a reset factor, the mode transits to the main clock mode after the
watch mode is cancelled, transiting to the reset sequence.
●
Return by interrupt
When an interrupt request higher than the interrupt level (IL) of 7 is generated from the watch
timer and external interrupt in the watch mode, the watch mode is cancelled. After the watch
mode is cancelled, as with normal interrupt processing, the generated interrupt request is
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 ...
Page 682: ......