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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)
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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