Low Power Modes (PDL_LPM)
To reduce power consumption, the system can be placed into one of a set of low power modes. The Low Power Consumption Mode (LPM) Component includes functions from the PDL that make it easy to enter the modes and fine-tune the system behavior in that state (e.g. modify clock frequencies and system standby voltages).
A number of pins on the device can be used to wake from (a subset of) standby modes. The wakeup events can be configured to be on high or low signals. WKUP00 is always connected to the Non-Maskable Interrupt pin and is always active low. Enabling the sources in the Component parameter editor will make them visible in the Pins Editor and PSoC™ Creator shall ensure that they are mapped to the correct physical pin. Helpful C-language macros are generated to make the routing of the signals from pin to LPM block easy and error-resistant in firmware.