MB90F654A FUJITSU [Fujitsu Component Limited.], MB90F654A Datasheet - Page 68

• Manufacturer Part Number: MB90F654A
• Description: 16-bit Proprietary Microcontroller
• Manufacturer: FUJITSU [Fujitsu Component Limited.]

68
MB90650A Series
State transition diagram for clock selection (2)
<1> SCS bit cleared
<2> Sub clock edge detection timing
<3> SCS bit set
<4> Main clock oscillation stabilization delay complete and MCS = 1
<5> PLL clock and main clock synchronized timing and SCS = 0
<6> Main clock ascillation stabilization delay complete and MCS = 0
Main
SCS = 1, MCS = 1
SCM = 1
MCM = 1
PLL
SCS = 0, MCS =
SCM = 1, MCM = 0
CS1/0 =
Main
SCS = 1, MCS = 0
SCM = 1, MCM = 1
CS1/0 =
Power-on
PLL
Sub
<1>
<6>
<5>
<4>
Main
SCS = 0
SCM = 1
MCM = 1
Sub
SCS = 1
SCM = 0
MCM = 1
Main
Sub
<2>
<3>
Sub
SCS = 0
SCM = 0
MCM = 1