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Chapter 8 Device State Transition
1.Overview
Chapter 8 Device State Transition
1. Overview
MB91460 basically has devices state and flow as shown below.
For more information, see “3. State Transition Diagram (Page No.134)”.
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.
Run
Sleep
Stop
Oscillation-stabilization RUN
Oscillation-stabilization
wait reset
Operation-initialization
reset
Setting-initialization reset
INT-pin input
Interrupt request
Software-reset instruction
Interrupt request
Status transition
Power-on
Watchdog reset
INITX
