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HD64F3687GHV Datasheet, PDF (127/566 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents | |||
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Section 6 Power-Down Modes
Section 6 Power-Down Modes
This LSI has six modes of operation after a reset. These include a normal active mode and four
power-down modes, in which power consumption is significantly reduced. Module standby mode
reduces power consumption by selectively halting on-chip module functions.
⢠Active mode
The CPU and all on-chip peripheral modules are operable on the system clock. The system
clock frequency can be selected from Ïosc, Ïosc/8, Ïosc/16, Ïosc/32, and Ïosc/64.
⢠Subactive mode
The CPU and all on-chip peripheral modules are operable on the subclock. The subclock
frequency can be selected from Ïw/2, Ïw/4, and Ïw/8.
⢠Sleep mode
The CPU halts. On-chip peripheral modules are operable on the system clock.
⢠Subsleep mode
The CPU halts. On-chip peripheral modules are operable on the subclock.
⢠Standby mode
The CPU and all on-chip peripheral modules halt. When the clock time-base function is
selected, the RTC is operable.
⢠Module standby mode
Independent of the above modes, power consumption can be reduced by halting on-chip
peripheral modules that are not used in module units.
LPW3002A_000120030300
Rev. 3.00 Sep. 10, 2007 Page 93 of 528
REJ09B0216-0300
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