From ultra-low power MSP430™ MCUs and high-performance C2000™ real-time controllers, to Hercules 32-bit ARM-based safety MCUs and Stellaris® ARM® Cortex™-M4F MCUs, TI offers the broadest range of embedded control products.
I have successfully generated good profit after using MSP430Gxx series to replace 8051 MCU in most of my automation projects.Using Launchpad as super low value development kit and many C libraries around the web, it is easy to replace 8051 in many projects.