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Field
4
Wakeup Flag For LLWU_P12
WUF12
Indicates that an enabled external wakeup pin was a source of exiting a low-leakage power mode. To
clear the flag, write a 1 to WUF12.
0
LLWU_P12 input was not a wakeup source
1
LLWU_P12 input was a wakeup source
3
Wakeup Flag For LLWU_P11
WUF11
Indicates that an enabled external wakeup pin was a source of exiting a low-leakage power mode. To
clear the flag, write a 1 to WUF11.
0
LLWU_P11 input was not a wakeup source
1
LLWU_P11 input was a wakeup source
2
Wakeup Flag For LLWU_P10
WUF10
Indicates that an enabled external wakeup pin was a source of exiting a low-leakage power mode. To
clear the flag, write a 1 to WUF10.
0
LLWU_P10 input was not a wakeup source
1
LLWU_P10 input was a wakeup source
1
Wakeup Flag For LLWU_P9
WUF9
Indicates that an enabled external wakeup pin was a source of exiting a low-leakage power mode. To
clear the flag, write a 1 to WUF9.
0
LLWU_P9 input was not a wakeup source
1
LLWU_P9 input was a wakeup source
0
Wakeup Flag For LLWU_P8
WUF8
Indicates that an enabled external wakeup pin was a source of exiting a low-leakage power mode. To
clear the flag, write a 1 to WUF8.
0
LLWU_P8 input was not a wakeup source
1
LLWU_P8 input was a wakeup source
18.4.8 LLWU Flag 3 register (LLWU_F3)
LLWU_F3 contains the wakeup flags indicating which internal wakeup source caused the
MCU to exit LLS or VLLS mode. For LLS, this is the source causing the CPU interrupt
flow. For VLLS, this is the source causing the MCU reset flow.
For internal peripherals that are capable of running in a low-leakage power mode, such as
a real time clock module or CMP module, the flag from the associated peripheral is
accessible as the MWUFx bit. The flag will need to be cleared in the peripheral instead of
writing a 1 to the MWUFx bit.
Freescale Semiconductor, Inc.
LLWU_F2 field descriptions (continued)
KL27 Sub-Family Reference Manual , Rev. 5, 01/2016
Chapter 18 Low-Leakage Wakeup Unit (LLWU)
Description
277
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