MC68HC912BD32CFU10 FREESCALE [Freescale Semiconductor, Inc], MC68HC912BD32CFU10 Datasheet - Page 190

• Manufacturer Part Number: MC68HC912BD32CFU10
• Description: Advance Information
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

Low Power Modes
Byteflight™ Module
MC68HC912BD32 Rev 1.0
In addition to normal mode, the Serial Bus Interface module has three
modes with reduced power consumption: Sleep, Soft Reset and Power
Save mode. In Sleep and Soft Reset mode, power consumption is
reduced by stopping all clocks except those to access the register. In
Power Save mode, all clocks are stopped and no power is consumed
(except leakage current).
The WAI and STOP instruction put the MCU in low power consumption
stand-by modes.
and CPU modes. A particular combination of modes is entered for the
given settings of the bits SSWAI, SLPAK, and SFTRES. For all modes,
an Byteflight™ wake-up interrupt can occur only if SLPAK=WAKEIE=1.
While the CPU is in Wait mode, the Byteflight™ can be operated in
normal mode and generate interrupts. Registers can still be accessed
via background debug mode.
Freescale Semiconductor, Inc.
For More Information On This Product,
1.
Byteflight™
Table 39 Byteflight™ vs. CPU operating modes
Power Save
Soft Reset
Normal
Mode
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Sleep
‘X’ means don’t care.
Byteflight™ Module
Table 39
SSWAI = X
SFTRES = X
SLPAK = X
STOP
summarizes the combinations of Byteflight™
(1)
SFTRES = X
SFTRES = 0
SFTRES = 1
SFTRES = 0
CPU Mode
SLPAK = X
SSWAI = 1
SSWAI = 0
SLPAK = 1
SSWAI = 0
SLPAK = 0
SSWAI = 0
SLPAK = 0
WAIT
SFTRES = 0
SFTRES = 1
SFTRES = 0
SSWAI = X
SSWAI = X
SSWAI = X
SLPAK = 1
SLPAK = 0
SLPAK = 0
RUN
20-sibus