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CHAPTER 8 LOW-POWER CONTROL CIRCUIT
8.5.2
Time-base Timer Mode
This mode causes all functions, excluding oscillation, the time-base timer, and the
clock timer, to stop. In this mode, only the time-base timer and clock timer operate.
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Switching to the Time-base Timer Mode
When "0" is written to the TMD bit of the low-power consumption mode control register (LPMCR) in the
PLL clock mode or main clock mode, switching to the time-base timer mode occurs.
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.
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Data retention function
In the time-base timer mode, the contents of dedicated registers, such as accumulators, and the built-in
RAM are retained.
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Operation during an interrupt request
Writing "0" in the TMD bit of the low-power consumption mode control register (LPMCR) during an
interrupt request does not trigger a switch to the time-base timer mode.
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Status of pins
Whether the external pins in the time-base timer mode retain the state they had immediately before
switching to the time-base timer mode or go to the high-impedance state can be controlled by the low-
power consumption mode control register (LPMCR: SPL).
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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