The LPC51U68 MCU has a variety of features designed to lower overall system power consumption and provide flexibility with its unique design. Based on the ARM® Cortex®-M0+ core, the power consumption in active mode is kept under 75µA per MHz. The LPC51U68 MCU also features crystal-less full-speed USB capabilities, a real time clock available for all power modes, and an extended SRAM supporting a total of 96kB and scalable RAM retention with individual power options. In addition, its free running oscillator allows the MCU to keep a 1% clock accuracy from 12MHz to 96MHz.