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Chapter 8
Device State Transition
1. Overview
MB91460 basically has devices state and flow as shown below.
For more information, see
Power-on
INITX
INT-pin input
2. Features
■ Device state
• RUN (Normal operation): State where the program is executed.
• SLEEP: State where the program is stopped (peripheral circuits are operating).
• STOP: State where the device is stopped.
• Oscillation-stabilization-wait RUN: State to return from the STOP to the RUN state (waiting until clock
oscillation is stabilized).
• Oscillation-stabilization-wait reset: State for waiting until the clock oscillation is stabilized after INIT.
• Operation-initialization reset (RST): State where the program is initialized.
• Setting-initialization reset (INIT): State where all settings are initialized.
■ Standby mode (Low-power-consumption mode)
SLEEP and STOP above are standby modes.
"3. State Transition Diagram (Page
Status transition
Watchdog reset
Setting-initialization reset
Oscillation-stabilization
wait reset
Operation-initialization
reset
Run
Interrupt request
Sleep
Chapter 8 Device State Transition
No.134)".
Software-reset instruction
Oscillation-stabilization RUN
Stop
Interrupt request
1.Overview
133
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