HD64336900G Datasheet, PDF (111/408 Pages) Renesas Technology Corp – 16-Bit Single-Chip Microcomputer H8 Family/H8/300H Tiny Series

Section 6 Power-Down Modes
For operating modes after a reset, this LSI has not only a normal active mode but also three
power-down modes in which power consumption is significantly reduced. In addition, there is also
a module standby function which reduces power consumption by individually stopping on-chip
peripheral modules.
• Active mode
The CPU and all on-chip peripheral modules are operable on the system clock. The system
clock frequency can be selected from φosc, φosc/8, φosc/16, φosc/32, and φosc/64.
• Sleep mode
The CPU halts. On-chip peripheral modules are operable on the system clock.
• Standby mode
The CPU and all on-chip peripheral modules halt.
• Subsleep mode
The CPU and all on-chip peripheral modules halt. I/O ports keep the same states as before the
transition.
• Module standby function
Independent of the above modes, power consumption can be reduced by halting on-chip
peripheral modules that are not used in module units.
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