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CHAPTER 8 LOW-POWER CONTROL CIRCUIT
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Clock Mode
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PLL clock mode
In this mode, a PLL clock that is a multiple of the oscillation clock (HCLK) is used to operate the CPU and
peripheral functions.
●
Main clock mode
In this mode, the main clock, with the oscillation clock (HCLK) frequency divided by 2 is used to operate
the CPU and peripheral functions. In the main clock mode, the PLL multiplier circuit is inactive.
Reference:
For the clock mode, see Section "5.4 Clock Mode".
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CPU Intermittent Operating Mode
In this mode, the CPU is operated intermittently while high-speed clock pluses are supplied to peripheral
functions, thereby reducing power consumption. In this mode, intermittent clock pulses are supplied only to
the CPU while it is accessing a register, internal memory, peripheral function, or external unit.
■
Standby Mode
In this mode, the low-power consumption control circuit stops supplying the clock to the CPU (sleep mode)
or the CPU and peripheral functions (time-base timer mode) or stops the oscillation clock itself (stop
mode), thereby reducing power consumption.
●
PLL sleep mode
The PLL sleep mode is activated to stop the CPU operating clock in the PLL clock mode. Components
excluding the CPU operate on the PLL clock.
●
Main sleep mode
The main sleep mode is activated to stop the CPU operating clock in the main clock mode. Components
excluding the CPU operate on the main clock.
●
Time-base timer mode
The time-base timer mode causes the operation of functions, excluding the oscillation clock, time-base
timer, and clock timer, to stop. All functions other than the time-base timer and clock timer are inactivated.
Please note that the status differentiates between Main-Time-base timer mode and PLL-Time-base timer
mode. The resulting state depends on the clock which is selected by the MCS-bit in CKSCR. See also
The power consumption is significantly higher in PLL-Time-base timer mode. Please refer to your data
sheet for specific values.
Содержание MB90390 Series
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Страница 17: ...xiii APPENDIX D List of Interrupt Vectors 690 INDEX 695 ...
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Страница 132: ...104 CHAPTER 5 CLOCKS ...
Страница 152: ...124 CHAPTER 6 CLOCK MODULATOR ...
Страница 210: ...182 CHAPTER 11 TIME BASE TIMER ...
Страница 218: ...190 CHAPTER 12 WATCHDOG TIMER ...
Страница 264: ...236 CHAPTER 14 16 BIT RELOAD TIMER WITH EVENT COUNT FUNCTION ...
Страница 274: ...246 CHAPTER 15 WATCH TIMER ...
Страница 306: ...278 CHAPTER 17 DTP EXTERNAL INTERRUPTS ...
Страница 338: ...310 CHAPTER 18 8 10 BIT A D CONVERTER ...
Страница 364: ...336 CHAPTER 19 UART0 UART1 ...
Страница 398: ...370 CHAPTER 20 UART2 UART3 Figure 20 5 2 ORE Set Timing Receive data RDRF ORE ...
Страница 432: ...404 CHAPTER 20 UART2 UART3 ...
Страница 482: ...454 CHAPTER 22 SERIAL I O ...
Страница 560: ...532 CHAPTER 24 STEPPING MOTOR CONTROLLER ...
Страница 582: ...554 CHAPTER 27 ROM MIRRORING MODULE ...
Страница 632: ...604 CHAPTER 29 EXAMPLES OF SERIAL PROGRAMMING CONNECTION ...
Страница 722: ...694 APPENDIX ...
Страница 723: ...695 INDEX The index follows on the next page This is listed in alphabetic order ...
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