Wait Mode - Motorola MC68HC05T16 Technical Data Manual

12.2

Wait Mode

When the MCU enters Wait mode, the CPU clock is halted. All CPU activities are halted, but the
peripheral modules remain active. Any interrupts from the peripherals will cause the processor to
exit the Wait mode. A reset will also take the MCU out of Wait mode.
The operation of the COP system in Wait mode is as for Stop mode, but counting is resumed
immediately after the exit; i.e. without the 4069 bus cycles.
The Wait mode power consumption depends on how many systems are active. If a non-reset exit
from the Wait mode is performed (e.g. timer overflow interrupt exit), the state of the remaining
systems will be unchanged. If a reset exit from the Wait mode is performed, all the systems revert
to the default reset state.
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MC68HC05T16 LOW POWER MODES MOTOROLA
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