“This means the
low-power modes may be affected by the choice for the WDT+ clock”
附上CONTEXT:
The WDT+ module provides a fail-safe clocking feature assuring the clock to
the WDT+ cannot be disabled while in watchdog mode. This means the
low-power modes may be affected by the choice for the WDT+ clock. For
example, if ACLK is the WDT+ clock source, LPM4 will not be available,
because the WDT+ will prevent ACLK from being disabled. Also, if ACLK or
SMCLK fail while sourcing the WDT+, the WDT+ clock source is automatically
switched to MCLK. In this case, if MCLK is sourced from a crystal, and the
crystal has failed, the fail-safe feature will activate the DCO and use it as the
source for MCLK. |
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