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CHAPTER 3 CLOCK CONTROLLER
3.4 Clock Modes
■ Clock Mode State Transition Diagram
There are five clock modes: main clock mode, subclock mode, main CR clock mode, main CR
PLL clock mode and sub-CR clock mode. The device can switch between these modes
according to the settings in the system clock control register (SYCC).
(4)
(2)
Sub-CR clock
oscillation
stabilization
wait time
38
Figure 3.4-1 Clock Mode State Transition Diagram
Power on
Reset state
<1>
Main CR clock
oscillation stabilization
wait time
+
sub-CR clock
oscillation stabilization
wait time
Main CR clock mode
Main CR clock mode
(or main CR PLL
(5)
clock mode)
(6)
(3)
(1)
Main CR clock
(or main CR PLL clock)
oscillation stabilization
(13)
Sub-CR clock mode
(15)
(16)
(14)
FUJITSU SEMICONDUCTOR LIMITED
A reset occurs in any other state.
(10)
Main CR clock
(or main CR PLL clock)
oscillation stabilization
wait time
(8)
(7)
Main clock
oscillation
stabilization
(9)
wait time
Subclock
oscillation
stabilization
wait time
Sub-CR clock
oscillation
stabilization
(20)
wait time
(19)
Subclock
oscillation
stabilization
wait time
MB95630H Series
Main clock mode
(12)
(11)
Main clock
oscillation
stabilization
wait time
(18)
(17)
Subclock mode
MN702-00009-1v0-E
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