Fujitsu FR60 Hardware Manual page 127

■ Peripheral Clock (CLKP)
This clock is used for peripheral circuits and peripheral buses.
It is used by the following circuits:
• Peripheral bus
• Clock controller (only for the bus interface)
• Interrupt controller
• Peripheral I/O ports
• I/O port bus
• External interrupt input
• UART
• 16-bit timer
• A/D converter
• ICU
• Free-run timer
• Reload timer
• Up/down counter
• Input capture
• Output compare
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• I C interface
• PPG
Since 25 MHz is the upper-limit frequency for operation, do not set a combination of multiply-by rate and
divide-by rate that results in a frequency exceeding this limit.
■ External Bus Clock (CLKT)
This clock is used for external extended bus interfaces.
It is used by the following circuits:
• External extended bus interface
• External CLK output
Since 25 MHz is the upper-limit frequency for operation, do not set a combination of multiply-by rate and
divide-by rate that results in a frequency exceeding this limit.
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