Fujitsu F2MC-16LX Hardware Manual page 143

Notes:
• As for the oscillation clock, 1 MHz to 7 MHz can oscillate. The maximum operating frequency is
24 MHz for the CPU and peripheral functions. When multiplier exceeding the maximum operating
frequency is specified, the device does not operate correctly. If the source oscillation at a
frequency of 6 MHz, only 4-time frequency multiplication can be specified.
• To use the USB Mini-HOST or USB function, the PLL clock mode must have been set.
Clock Supply Map
Machine clocks generated by the clock generation section are supplied as operating clocks of the CPU and
peripheral function. For this reason, operation of the peripheral functions is influenced by switching clock
mode between the main and PLL clock or switching the PLL clock frequency multiplication rate. The
frequency divided output from the timebase timer is provided to some peripheral functions, thereby
enabling each periphery to select its operating clock. Figure 5.1-1 contains the map showing how the clocks
are provided.
CHAPTER 5 CLOCK
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