LM3S3749 Luminary Micro, Inc, LM3S3749 Datasheet - Page 152
LM3S3749
Manufacturer Part Number
LM3S3749
Description
Lm3s3749 Arm Microcontroller
Manufacturer
Luminary Micro, Inc
Datasheet
1.LM3S3749.pdf
(753 pages)
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Hibernation Module
152
Bit/Field
6
5
4
3
2
1
LOWBATEN
CLK32EN
RTCWEN
PINWEN
CLKSEL
HIBREQ
Name
Type
R/W
R/W
R/W
R/W
R/W
R/W
Reset
0
0
0
0
0
0
Preliminary
Description
32-kHz Oscillator Enable
This bit must be enabled to use the Hibernation module. If a crystal is
used, then software should wait 20 ms after setting this bit to allow the
crystal to power up and stabilize.
Low Battery Monitoring Enable
When set, low battery voltage detection is enabled (VBAT < 2.35 V).
External WAKE Pin Enable
When set, an external event on the WAKE pin will re-power the device.
RTC Wake-up Enable
When set, an RTC match event (RTCM0 or RTCM1) will re-power the
device based on the RTC counter value matching the corresponding
match register 0 or 1.
Hibernation Module Clock Select
Hibernation Request
After a wake-up event, this bit is cleared by hardware.
Value
Value
Value
Value
Value
Value
0
1
0
1
0
1
0
1
0
1
0
1
Description
Disabled
Enabled
Description
Disabled
Enabled
Description
Disabled
Enabled
Description
Disabled
Enabled
Description
Use Divide by 128 output. Use this value for a 4-MHz crystal.
Use raw output. Use this value for a 32-kHz oscillator.
Description
Disabled
Hibernation initiated
June 02, 2008
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