M37733MHBXXXFP Datasheet, PDF (58/89 Pages) Mitsubishi Electric Semiconductor – SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

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MITSUBISHI MICROCOMPUTERS
M37733MHBXXXFP
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
Reset
Main clock : Oscillating
Sub clock : Stopped
I/O ports P77 and P76
f2 : Main-clock side
(Note 2)
φ : Stopped
WIT instruction
Interrupt
Main clock : Oscillating
Sub clock : Stopped
I/O ports P77 and P76
f2 : Main-clock side
φ : Main-clock side
STP instruction
Interrupt
Main clock : Stopped
Sub clock : Stopped
I/O ports P77 and P76
f2 : Stopped
φ : Stopped
XC is selected
(CM4 = “1”)
Main clock : Oscillating
Sub clock : Oscillating
f2 : Main-clock side
(Note 2)
φ : Stopped
WIT instruction
Interrupt
Main clock : Oscillating
Sub clock : Oscillating
f2 : Main-clock side
φ : Main-clock side
STP intrunction
Interrupt
Main clock : Stopped
Sub clock : Stopped
f2 : Stopped
φ : Stopped
Main clock is selected as
system clock (Note 1)
(CM3 = “0”)
Sub clock is selected as
system clock (Note 1)
(CM3 = “1”)
Main clock : Oscillating ^{WIT instruction}
Sub clock : Oscillating
f2 : Sub-clock side (Note 2)
φ : Stopped
Interrupt
Main clock : Oscillating
Sub clock : Oscillating
f2 : Sub-clock side
φ : Sub-clock side
STP intrunction
Interrupt
Main clock : Stopped
Sub clock : Stopped
f2 : Stopped
φ : Stopped
Main clock
oscillation starts
(CM2 = “0”)
Main clock
oscillation stops
(CM2 = “1”)
Main clock :Stopped
WIT instruction
Sub clock :Oscillating
f2 : Sub-clock side (Note 2)
φ : Stopped
Interrupt
Main clock : Stopped
Sub clock : Oscillating
f2 : Sub-clock side
φ : Sub-clock side
STP instruction
Interrupt
Main clock : Stopped
Sub clock : Stopped
f2 : Stopped
φ : Stopped
Notes 1. Before selecting the main/sub clock of which oscillation already starts as the system clock, use software
to fully stabilize the oscillation.
2. When the system clock stop bit at wait state (CM 5) is “1”, f2 stops at wait state.
Fig. 66 System clock state transition
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