158
CHAPTER 8 LOW-POWER CONSUMPTION MODE
●
PLL clock oscillation stabilization wait time
In main clock mode, the PLL multiplication circuit stops. When changing to PLL clock mode, it is
necessary to reserve the PLL clock oscillation stabilization wait time. The CPU runs in main clock mode
till the PLL clock oscillation stabilization wait time has elapsed. When the main clock mode is switched to
PLL clock mode, the PLL clock oscillation stabilization wait time is fixed at 2
14
/HCLK (HCLK: oscillation
clock).
In sub-clock mode, the main clock and PLL multiplication circuit stop. When changing to PLL clock mode,
it is necessary to reserve the main clock oscillation stabilization wait time and PLL clock oscillation
stabilization wait time. The oscillation stabilization wait time for main clock and PLL clock are counted
simultaneously according to the value specified in the oscillation stabilization wait time selection bits in the
clock selection register (CKSCR: WS1, WS0). The oscillation stabilization wait time selection bits in the
clock selection register (CKSCR: WS1, WS0) must be selected accordingly to account for the longer of the
main clock and PLL clock oscillation stabilization wait time. The PLL clock oscillation stabilization wait
time, however, requires 2
14
/HCLK or more. Set the oscillation stabilization wait time selection bits in the
clock selection register (CKSCR: WS1, WS0) to "10
B
" or "11
B
".
In PLL stop mode, the main clock and PLL multiplication circuit stop. During recovery from PLL stop
mode, it is necessary to allot the main clock oscillation stabilization wait time and PLL clock oscillation
stabilization wait time. The oscillation stabilization wait time for the main clock and PLL clock are counted
simultaneously according to the value specified in the oscillation stabilization wait time selection bits in the
clock selection register (CKSCR: WS1, WS0). The oscillation stabilization wait time selection bits in the
clock selection register (CKSCR: WS1, WS0) must be selected accordingly to account for the longer of
main clock and PLL clock oscillation stabilization wait time. The PLL clock oscillation stabilization wait
time, however, requires 2
14
/HCLK or more. Set the oscillation stabilization wait time selection bits in the
clock selection register (CKSCR: WS1, WS0) to "10
B
" or "11
B
".
■
Clock Mode Switching
When the clock mode is switched, do not switch to other clock mode and low-power consumption mode
before this switching is completed. Confirm the completion of clock mode switching by referring to the
MCM and SCM bits of the clock selection register (CKSCR).
If the mode is switched to other clock mode or low-power consumption mode before completion of
switching, the mode may not be switched.
■
Notes on Accessing the Low-Power Consumption Mode Control Register (LPMCR) to
Enter the Standby Mode
●
To access the low-power consumption mode control register (LPMCR) with assembler language
To set the low-power consumption mode control register (LPMCR) to enter the standby mode, use the
instruction listed in Table 8.3-2 .
The standby mode transition instruction in Table 8.3-2 must always be followed by an array of
instructions highlighted by a line below.
MOV LPMCR, #H’ xx; The low-power consumption mode transition instruction in Table 8.3-2
NOP
NOP
JMP $+3
; Jump to the next instruction
MOV A, #H’ 10
; Arbitrary instruction
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: ......