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CHAPTER 5 CLOCKS
5.1
Clocks
The clock generation block controls the operation of the internal clock that controls
operation of the CPU and peripheral functions. The clock generated by the clock
generation block is called the machine clock. One cycle of machine clock is called one
machine cycle. The clock to be supplied from a high-speed oscillator is called an
oscillation clock, and the 2-frequency division of the oscillation clock is called a main
clock. The 4- or 2-frequency division of the clock supplied from a low-speed oscillator
or internal CR oscillation clock is called a sub-clock, and the clock by the PLL
oscillation is called PLL clock.
■
Clocks
The clock generation block contains the oscillation circuit that generates the oscillation clock by connecting
oscillator to oscillation pin. External clock inputted to the oscillation pins can be used as oscillation clock.
The clock generation block also contains the PLL clock multiplier circuit, which generates five clocks
whose frequencies are multiplication of the oscillation clock frequency. The clock generation block
controls the oscillation stabilization wait interval and PLL clock multiplication as well as internal clock
operation by changing the clock with a clock selector.
●
Oscillation clock (HCLK)
The oscillation clock is generated either by connecting the oscillator to high-speed oscillator pins (X0,X1)
or by the input of an external clock.
●
Main clock (MCLK)
The main clock, whose frequency is the oscillation clock frequency divided by 2, supplies the clock input
to the timebase timer and the clock selector.
●
Sub-clock (SCLK)
The sub-clock is a clock by connecting the oscillator to the low-speed oscillation pins (X0A, X1A) or by
inputting the external clock or the internal CR oscillation clock divided by 4 or 2. The division ratio of sub-
clock is determined by SCDS bit of PLL/Subclock Control Register (PSCCR). The sub-clock can be used
as operation clock of the watch timer or the low-speed machine clock.
●
PLL clock (PCLK)
The PLL clock is obtained by multiplying the oscillation clock frequency with the PLL clock multiplier
circuit (PLL oscillation circuit). One of five types of clocks can be selected by setting the multiplication
ratio selection bits (CKSCR: CS1, CS0, PSCCR: CS2)
Содержание F2MCTM-16LX
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Страница 3: ...FUJITSU LIMITED F2MCTM 16LX 16 BIT MICROCONTROLLER MB90360 Series HARDWARE MANUAL ...
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Страница 42: ...26 CHAPTER 1 OVERVIEW ...
Страница 66: ...50 CHAPTER 2 CPU MOV ILM imm8 The instruction is executed normally but the prefix affects the next instruction ...
Страница 70: ...54 CHAPTER 2 CPU ...
Страница 134: ...118 CHAPTER 6 CLOCK SUPERVISOR ...
Страница 176: ...160 CHAPTER 8 LOW POWER CONSUMPTION MODE ...
Страница 194: ...178 CHAPTER 10 I O PORTS ...
Страница 252: ...236 CHAPTER 13 16 Bit I O TIMER ...
Страница 282: ...266 CHAPTER 14 16 BIT RELOAD TIMER ...
Страница 295: ...279 CHAPTER 15 WATCH TIMER ORG 00FFDCH Reset vector set DSL START DB 00H Set to single chip mode VECT ENDS END START ...
Страница 296: ...280 CHAPTER 15 WATCH TIMER ...
Страница 386: ...370 CHAPTER 18 8 10 BIT A D CONVERTER ...
Страница 426: ...410 CHAPTER 20 LIN UART Figure 20 5 2 ORE Flag Set Timing RDRF ORE Reception data ...
Страница 540: ...524 CHAPTER 22 ADDRESS MATCH DETECTION FUNCTION ...
Страница 568: ...552 CHAPTER 24 512K BIT FLASH MEMORY ...
Страница 633: ...617 APPENDIX B Instructions Table B 9 3 Bit Operation Instruction Map first byte 6CH ...
Страница 634: ...618 APPENDIX Table B 9 4 Character String Operation Instruction Map first byte 6EH ...
Страница 635: ...619 APPENDIX B Instructions Table B 9 5 2 byte Instruction Map first byte 6FH MUL MULW DIVU A A A ...
Страница 637: ...621 APPENDIX B Instructions Table B 9 7 ea Instruction 2 first byte 71H ...
Страница 638: ...622 APPENDIX Table B 9 8 ea Instruction 3 first byte 72H ...
Страница 639: ...623 APPENDIX B Instructions Table B 9 9 ea Instruction 4 first byte 73H ...
Страница 640: ...624 APPENDIX Table B 9 10 ea Instruction 5 first byte 74H ...
Страница 641: ...625 APPENDIX B Instructions Table B 9 11 ea Instruction 6 first byte 75H ...
Страница 642: ...626 APPENDIX Table B 9 12 ea Instruction 7 first byte 76H ...
Страница 643: ...627 APPENDIX B Instructions Table B 9 13 ea Instruction 8 first byte 77H ...
Страница 644: ...628 APPENDIX Table B 9 14 ea Instruction 9 first byte 78H ...
Страница 645: ...629 APPENDIX B Instructions Table B 9 15 MOVEA RWi ea Instruction first byte 79H ...
Страница 646: ...630 APPENDIX Table B 9 16 MOV Ri ea Instruction first byte 7AH ...
Страница 647: ...631 APPENDIX B Instructions Table B 9 17 MOVW RWi ea Instruction first byte 7BH ...
Страница 648: ...632 APPENDIX Table B 9 18 MOV Ri ea Instruction first byte 7CH ...
Страница 649: ...633 APPENDIX B Instructions Table B 9 19 MOVW ea Rwi Instruction first byte 7DH ...
Страница 650: ...634 APPENDIX Table B 9 20 XCH Ri ea Instruction first byte 7EH ...
Страница 651: ...635 APPENDIX B Instructions Table B 9 21 XCHW RWi ea Instruction first byte 7FH ...
Страница 664: ...648 APPENDIX ...
Страница 665: ...649 INDEX INDEX The index follows on the next page This is listed in alphabetic order ...
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