LM3S1911 Luminary Micro, Inc, LM3S1911 Datasheet - Page 116

• Manufacturer Part Number: LM3S1911
• Description: Lm3s1911 Arm Microcontroller
• Manufacturer: Luminary Micro, Inc

Hibernation Module
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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
July 26, 2008