Information

Module0 interrupt flag
(LLWU_M0IF)
WUME0
LLWU_MWUF0 occurred
Internal
module
sources
LLWU
controller
External
pin sources
exit low leakge mode
interrupt flow
reset flow
reset occurred
RSTFILT
RESET
LLWU_P0
LLWU_P15
Pin filter 1
wakeup
occurred
Interrupt module
flag detect
WUPE15
2
Edge
detect
enter low leakge mode
WUPE0
Edge
detect
Module7 interrupt flag
(LLWU_M7IF)
WUME7
LLWU_MWUF7 occurred
Interrupt module
flag detect
LPO
Pin filter 2
LPO
FILT1[FILTE]
Pin filter 1
Synchronizer
Synchronizer
Edge
detect
LLWU_P15
wakeup occurred
Edge
detect
Pin filter 2
wakeup
occurred
2
LLWU_P0
wakeup occurred
RESET
Pin filter
LPO
FILT2[FILTSEL]
FILT1[FILTSEL]
FILT2[FILTE]
Figure 16-1. LLWU block diagram
16.2 LLWU signal descriptions
The signal properties of LLWU are shown in the following table. The external wakeup
input pins can be enabled to detect either rising-edge, falling-edge, or on any change.
Table 16-1. LLWU signal descriptions
Signal Description I/O
LLWU_Pn Wakeup inputs (n = 0-15) I
LLWU signal descriptions
K20 Sub-Family Reference Manual, Rev. 2, Feb 2012
292 Freescale Semiconductor, Inc.