Using the PLL on LPC17xx

The Phase Locked Loop is a peripheral on the LPC17xx that can be used to obtain various frequencies from the frequency sources available. It can multiply and divide the reference frequency to obtain a wide range of CPU frequencies. This tutorial describes how PLL0 can be used.

Hello Word ( LED blinker ) on LPC1768 explained. GPIO tutorial

Traditionally, blinking an LED has been the first program written for almost any embedded system and LPC1768 is no exception. Here's a detailed description of all the software tools needed to get started. The LPC1768H schematic is available in the NGX website. The schematics show that TEST_LED is connected to P1.29. Now, for the register description, we'll need the LPC1768 manual.