NXP Semiconductors K32 L2A Series, Reference Manual, Page: 665 / 1379

Chapter 26
Low-Leakage Wakeup Unit (LLWU)
26.1 Introduction
NOTE
For the chip-specific implementation details of this module's
instances, see the chip configuration information.
The LLWU module allows the user to select up to 32 external pins and up to 8 internal
modules as interrupt wake-up sources from low-leakage power modes. It also supports up
to 8 internal modules as temporary DMA wake-up sources.
The input sources are described in the device's chip configuration details. Each of the
available wake-up sources can be individually enabled.
The RESET pin is an additional source for triggering an exit from low-leakage power
modes, and causes the MCU to exit both LLS and VLLS through a reset flow.
The LLWU module also includes four optional digital pin filters for the external wakeup
pins.
See AN4503: Power Management for Kinetis MCUs for further details on using the
LLWU.
26.1.1 Features
The LLWU module features include:
• Support for up to 32 external input pins and up to 8 internal modules with individual
enable bits for MCU interrupt from low leakage modes
• Support for up to 8 internal modules with individual enable bits for DMA wakeup
from low leakage modes
K32 L2A Reference Manual, Rev. 2, 01/2020
NXP Semiconductors 665