Fujitsu MB90895 Series Hardware Manual page 144

CHAPTER 3 CPU
G
Timebase timer mode
The timebase timer mode operates only the oscillation clock (HCLK), sub clock (SCLK), timebase timer,
and watch timer.Resources other than the timebase timer and watch timer stop.
G
Stop mode
The stop mode stops the oscillation clock (HCLK) and sub clock (SCLK) during operation in each clock
mode.It enables data to be retained with the least power consumption.
Notes: • While the clock mode is being switched, do not switch the CPU to any other clock mode
or to low power consumption mode until the current process of mode switching is
completed.Check the MCM and SCM bits in the clock select register (CKSCR) to make
sure that the transition to the new clock mode has been completed. If the mode is switched
to another clock mode or low power consumption mode before completion of switching,
the mode may not be switched.
• There is no sub-clock in MB90F897S.
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