M37736MHB Datasheet, PDF (61/96 Pages) Mitsubishi Electric Semiconductor – SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

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MITSUBISHI MICROCOMPUTERS
M37736MHBXXXGP
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)
: Stopped
WIT instruction
Interrupt
Main clock : Oscillating
Sub clock : Stopped
I/O ports P77 and P76
f2 : Main-clock side
: Main-clock side
STP instruction
Interrupt
Main clock : Stopped
Sub clock : Stopped
I/O ports P77 and P76
f2 : Stopped
: Stopped
XC is selected
(CM4 = “1”)
Main clock : Oscillating
Sub clock : Oscillating
f2 : Main-clock side
(Note 2)
: Stopped
WIT instruction
Interrupt
Main clock : Oscillating
Sub clock : Oscillating
f2 : Main-clock side
: Main-clock side
STP intrunction
Interrupt
Main clock : Stopped
Sub clock : Stopped
f2 : Stopped
: 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)
: Stopped
Interrupt
Main clock : Oscillating
Sub clock : Oscillating
f2 : Sub-clock side
: Sub-clock side
STP intrunction
Interrupt
Main clock : Stopped
Sub clock : Stopped
f2 : Stopped
: 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)
: Stopped
Interrupt
Main clock : Stopped
Sub clock : Oscillating
f2 : Sub-clock side
: Sub-clock side
STP instruction
Interrupt
Main clock : Stopped
Sub clock : Stopped
f2 : Stopped
: Stopped
Notes1. 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”, f 2 stops at wait state.
Fig. 67 System clock state transition
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