This is the documentation for the latest (main) development branch of mcuxpresso sdk. If you are looking for the documentation of previous releases, use the drop-down menu on the left and select the desired version.

Hardware requirements

• Mini/micro USB cable

• LPCXpresso51U68 board

• Personal Computer

Board settings

1. Pin P0_21 is used as a CLKOUT signal. Connect this pin to an Oscilloscope for viewing the signal.

Running the demo

The demo sets the MicroTick Timer as a wake up source and puts the device in deep-sleep mode. The MicroTick timer wakes up the device. After wake up the Green LED on the board blinks and a CLKOUT signal can be seen on pin P0_21.