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CHAPTER 6 LOW POWER CONSUMPTION MODE
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Clock Mode
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PLL clock mode
A PLL clock that is a multiple of the oscillation clock (HCLK) frequency is used to operate the CPU and
peripheral functions.
●
Main clock mode
The main clock, with a frequency one-half that of the oscillation clock (HCLK), is used to operate the CPU
and peripheral functions. In main clock mode, the PLL multiplier circuit is inactive.
Reference:
See "5.1 Clock", for details about clock mode.
■
CPU Intermittent Operation Mode
CPU intermittent operation mode causes the CPU to operate intermittently, while high-speed clock pulses
are supplied to peripheral functions, reducing power consumption. In CPU intermittent operation mode,
intermittent clock pulses are only applied to the CPU when it is accessing a register, internal memory, a
peripheral function, or an external unit.
■
Standby Mode
In standby 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), reducing power consumption.
●
PLL sleep mode
PLL sleep mode is activated to stop the CPU operating clock when the microcontroller enters PLL clock
mode; other components continue to operate on the PLL clock.
●
Main sleep mode
Main sleep mode is activated to stop the CPU operating clock when the microcontroller enters main clock
mode; other components continue to operate on the main clock.
●
PLL time-base timer mode
PLL time-base timer mode causes microcontroller operation, with the exception of the oscillation clock,
PLL clock and time-base timer, to stop. All functions other than the time-base timer are deactivated.
●
Main time-base timer mode
Main time-base timer mode causes microcontroller operation, with the exception of the oscillation clock,
main clock and the time-base timer, to stop. All functions other than the time-base timer are deactivated.
●
Stop mode
Stop mode causes the source oscillation to stop. All functions are deactivated.
Note:
Because stop mode turns the oscillation clock off, this mode saves most power while data is being
retained.
If the mode is switched to another clock mode or low-power-consumption mode before completion of
switching, the mode may not be switched.
Содержание MB90460 Series
Страница 1: ...The following document contains information on Cypress products ...
Страница 3: ......
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Страница 9: ...iv ...
Страница 41: ...22 CHAPTER 1 OVERVIEW ...
Страница 45: ...26 CHAPTER 2 NOTES ON HANDLING DEVICES ...
Страница 83: ...64 CHAPTER 3 CPU ...
Страница 95: ...76 CHAPTER 4 RESET ...
Страница 107: ...88 CHAPTER 5 CLOCK ...
Страница 131: ...112 CHAPTER 6 LOW POWER CONSUMPTION MODE ...
Страница 175: ...156 CHAPTER 7 INTERRUPT ...
Страница 181: ...162 CHAPTER 8 MODE SETTING ...
Страница 223: ...204 CHAPTER 9 I O PORT ...
Страница 237: ...218 CHAPTER 10 TIME BASE TIMER ...
Страница 247: ...228 CHAPTER 11 WATCHDOG TIMER ...
Страница 275: ...256 CHAPTER 12 16 BIT RELOAD TIMER ...
Страница 373: ...354 CHAPTER 14 MULTI FUNCTIONAL TIMER ...
Страница 485: ...466 CHAPTER 16 PWC Timer ...
Страница 531: ...512 CHAPTER 17 UART ...
Страница 559: ...540 CHAPTER 19 DELAYED INTERRUPT GENERATOR MODULE ...
Страница 589: ...570 CHAPTER 20 8 10 BIT A D CONVERTER ...
Страница 601: ...582 CHAPTER 21 ROM CORRECTION FUNCTION ...
Страница 633: ...614 CHAPTER 23 512K 1024K BIT FLASH MEMORY ...
Страница 645: ...626 CHAPTER 24 EXAMPLE OF F2 MC 16LX MB90F462 F462A F463A CONNECTION FOR SERIAL WRITING ...
Страница 715: ...696 APPENDIX ...
Страница 716: ...697 INDEX INDEX The index follows on the next page This is listed in alphabetic order ...
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