LM3S3749 Luminary Micro, Inc, LM3S3749 Datasheet - Page 137

• Manufacturer Part Number: LM3S3749
• Description: Lm3s3749 Arm Microcontroller
• Manufacturer: Luminary Micro, Inc

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June 02, 2008
Hibernation Module
The Hibernation Module manages removal and restoration of power to the rest of the microcontroller
to provide a means for reducing power consumption. When the processor and peripherals are idle,
power can be completely removed with only the Hibernation Module remaining powered. Power
can be restored based on an external signal, or at a certain time using the built-in real-time clock
(RTC). The Hibernation module can be independently supplied from a battery or an auxiliary power
supply.
The Hibernation module has the following features:
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Power-switching logic to discrete external regulator
Dedicated pin for waking from an external signal
Low-battery detection, signaling, and interrupt generation
32-bit real-time counter (RTC)
Two 32-bit RTC match registers for timed wake-up and interrupt generation
Clock source from a 32.768-kHz external oscillator or a 4.194304-MHz crystal
RTC predivider trim for making fine adjustments to the clock rate
64 32-bit words of non-volatile memory
Programmable interrupts for RTC match, external wake, and low battery events
Preliminary
LM3S3749 Microcontroller
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