LPC4300 Cortex™-M4 / M-0 Dual-Core MCUs NXP Semiconductors LPC4300 series microcontrollers (MCUs) boast the world's first asymmetrical dual-core digital signal controller architecture, featuring ARM® Cortex™-M4 and Cortex-M0 processors. These NXP Cortex-M4 MCUs with Cortex-M0 co-processors bring the advantage of developing a digital signal processor (DSP) and MCU applications within a single architecture and development environment.