Arm Cortex-M Series Processors

Optimized for cost and power sensitive MCU and mixed-signal devices for applications such as Internet of Things, connectivity, motor control, smart metering, human interface devices, automotive and industrial control systems, domestic household appliances, consumer products and medical instrumentation. 

Useful Resources

Blog Cortex-M resources by Joseph Yiu
Blog Machine Learning on Cortex-M
Blog Cortex-M3 - The core of the Internet of Things
Whitepaper Designing a SoC with an Arm Cortex-M processor
Webinar Machine learning on embedded and resource-constrained end nodes for the IoT