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Chapter 8 Device State Transition
3.State Transition Diagram
3. State Transition Diagram
This section describes state transition.
1
INIT pin = 0 (INIT)
2
INIT pin = 1 (Cancel of INIT)
3
Termination of oscillation-stabilization wait
4
Cancel of reset (RST)
5
Software reset (RST)
6
Sleep (Writing instruction)
7
Stop (Writing instruction)
8
Interrupt
9
External interrupt requiring no clock
10 Switching from main to sub (Writing instruction)
11 Switching from sub to main (Writing instruction)
12 Watchdog reset (INIT)
13 Sub-sleep (Writing instruction)
Main clock mode
1
Main stop
1
Oscillation-
stabilization-wait RUN
1
Main sleep
Subclock mode
1
Sub-sleep
1
Oscillation-
stabilization-wait RUN
MB91460 does not stop
oscillation while waiting
time is generated.
1
Sub-stop *
* To switch clock source between main and sub, in the RUN status where switched clock is stable,
switch clock source register (CLKR) between bit 1 and 0 (CLKS1 and CLKS0 bit).
134
Figure 3-1 State Transition of MB91460 Series
Setting initialization
9
3
7
6
8
8
13
7
3
9
Priority of transition request
Highest
Power-on
priority
Setting-initialization reset (INIT)
Termination of oscillation-stabilization wait
Operation-initialization reset (RST)
1
Interrupt request
Stop
Lowest
Sleep
priority
(INIT)
2
Oscillation-
stabilization-
1
wait reset
3
Program reset
(RST)
1
4
5
12
Main RUN
1
10
11
12
Sub-RUN
1
5
4
Program reset
(RST)
1
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