Information

LLWU_PE3 field descriptions (continued)
Field Description
01 External input pin enabled with rising edge detection
10 External input pin enabled with falling edge detection
11 External input pin enabled with any change detection
3–2
WUPE9
Wakeup Pin Enable For LLWU_P9
Enables and configures the edge detection for the wakeup pin.
00 External input pin disabled as wakeup input
01 External input pin enabled with rising edge detection
10 External input pin enabled with falling edge detection
11 External input pin enabled with any change detection
1–0
WUPE8
Wakeup Pin Enable For LLWU_P8
Enables and configures the edge detection for the wakeup pin.
00 External input pin disabled as wakeup input
01 External input pin enabled with rising edge detection
10 External input pin enabled with falling edge detection
11 External input pin enabled with any change detection
16.3.4 LLWU Pin Enable 4 register (LLWU_PE4)
LLWU_PE4 contains the field to enable and select the edge detect type for the external
wakeup input pins LLWU_P15-LLWU_P12.
NOTE
This register is reset on Chip Reset not VLLS and by reset
types that trigger Chip Reset not VLLS. It is unaffected by reset
types that do not trigger Chip Reset not VLLS. See the
Introduction details for more information.
Address: LLWU_PE4 is 4007_C000h base + 3h offset = 4007_C003h
Bit 7 6 5 4 3 2 1 0
Read
WUPE15 WUPE14 WUPE13 WUPE12
Write
Reset
0 0 0 0 0 0 0 0
LLWU_PE4 field descriptions
Field Description
7–6
WUPE15
Wakeup Pin Enable For LLWU_P15
Enables and configures the edge detection for the wakeup pin.
00 External input pin disabled as wakeup input
01 External input pin enabled with rising edge detection
Table continues on the next page...
Chapter 16 Low-Leakage Wakeup Unit (LLWU)
K20 Sub-Family Reference Manual, Rev. 2, Feb 2012
Freescale Semiconductor, Inc. 297