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CHAPTER 8 LOW-POWER CONSUMPTION MODE
8.8
Usage Notes on Low-Power Consumption Mode
This section explains the notes when using the low-power consumption modes.
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Transition to Standby Mode
When an interrupt request is generated from the resource to the CPU, the mode does not transit to each
standby mode even after setting the STP and SLP bits to 1 and the TMD bit to 0 in the low-power
consumption mode control register (LPMCR) (and also even after interrupt processing).
If the CPU is servicing an interrupt, the interrupt-service-time interrupt request flag is cleared and the CPU
can enter the standby mode unless any other interrupt request has been generated.
■
Notes on the Transition to Standby Mode
To set a pin to high impedance when the pin is shared by a peripheral function and a port in stop mode,
watch mode, or timebase timer mode, use the following procedure:
1. Disable the output of peripheral functions.
2. Set the SPL bit to "1", STP bit to "1", or TMD bit to "0" in the low-power consumption mode control
register (LPMCR).
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Cancellation of Standby Mode by Interrupt
When an interrupt request higher than the interrupt level (IL) of 7 is generated from the resource and
external interrupt during operation in the sleep mode, watch mode, timebase timer mode, or stop mode, the
standby mode is cancelled. The standby mode is cancelled by an interrupt regardless of whether the CPU
accepts interrupts or not.
Note:
To prevent the CPU from causing a branch to interrupt servicing immediately after returning from
standby mode, take measures, such as disabling interrupts before setting the standby mode.
■
Note on Canceling Standby Mode
The standby mode can be cancelled by an input according to the settings of an input factor of an external
interrupt. The input factor can be selected from High level, Low level, rising edge, and falling edge.
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Oscillation Stabilization Wait Time
●
Oscillation stabilization wait time of main clock
In the sub clock mode, watch mode, or stop mode, the oscillation of the main clock stops and the oscillation
stabilization wait time of the main clock is required. The oscillation stabilization wait time of the main
clock is set by the WS1 and WS0 bits in the clock selection register (CKSCR).
●
Oscillation stabilization wait time of sub clock
In the sub-stop mode, the oscillation of the sub clock (SCLK) stops and the oscillation stabilization wait
time of the sub clock is required. The oscillation stabilization wait time of the sub clock is fixed at 2
14
/
SCLK (SCLK: sub clock).
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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