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Hitachi H8/300L Series Manual page 52

Single-chip microcomputer
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Low Power Modes
The following figure provides an overview of the H8/300L Series operating modes and the
transitions between those operating modes. The transitions between modes are made by
interrupts and the execution of the SLEEP instruction.
H8/3927 Series Operating Modes and Transitions
Reset state
Program stopped states
Standby modes
Watch mode
Notes: 1.
The IC switches to the reset state when the RES signal goes low, whatever the current state.
2.
The particular interrupts that can clear a given low power mode differ for each mode.
Program execution states
Active
(high speed)
mode
Active
(medium speed)
mode
Subactive mode
52
Program stopped states
SLEEP
Sleep
instruction
(high speed)
mode
Interrupt
SLEEP
instruction
Sleep
(medium speed)
Interrupt
mode
SLEEP
instruction
Subsleep mode
Interrupt
Low power modes

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