LLWU_F2 field descriptions (continued)Field Description4WUF12Wakeup Flag For LLWU_P12Indicates that an enabled external wakeup pin was a source of exiting a low-leakage power mode. Toclear the flag, write a 1 to WUF12.0 LLWU_P12 input was not a wakeup source1 LLWU_P12 input was a wakeup source3WUF11Wakeup Flag For LLWU_P11Indicates that an enabled external wakeup pin was a source of exiting a low-leakage power mode. Toclear the flag, write a 1 to WUF11.0 LLWU_P11 input was not a wakeup source1 LLWU_P11 input was a wakeup source2WUF10Wakeup Flag For LLWU_P10Indicates that an enabled external wakeup pin was a source of exiting a low-leakage power mode. Toclear the flag, write a 1 to WUF10.0 LLWU_P10 input was not a wakeup source1 LLWU_P10 input was a wakeup source1WUF9Wakeup Flag For LLWU_P9Indicates that an enabled external wakeup pin was a source of exiting a low-leakage power mode. Toclear the flag, write a 1 to WUF9.0 LLWU_P9 input was not a wakeup source1 LLWU_P9 input was a wakeup source0WUF8Wakeup Flag For LLWU_P8Indicates that an enabled external wakeup pin was a source of exiting a low-leakage power mode. Toclear the flag, write a 1 to WUF8.0 LLWU_P8 input was not a wakeup source1 LLWU_P8 input was a wakeup source18.4.8 LLWU Flag 3 register (LLWU_F3)LLWU_F3 contains the wakeup flags indicating which internal wakeup source caused theMCU to exit LLS or VLLS mode. For LLS, this is the source causing the CPU interruptflow. 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 asa real time clock module or CMP module, the flag from the associated peripheral isaccessible as the MWUFx bit. The flag will need to be cleared in the peripheral instead ofwriting a 1 to the MWUFx bit.Chapter 18 Low-Leakage Wakeup Unit (LLWU)KL27 Sub-Family Reference Manual , Rev. 5, 01/2016Freescale Semiconductor, Inc. 277
