On June 7th 2013, Silicon Labs and Energy Micro signed the contract where Silabs acquires Energy Micro and the two companies combine portfolios to enable the Internet of Things, Smart Energy and Portable Electronics.
This acquisition combines two proven leaders in nano-power MCU and wireless SoC design into a formidable force that will accelerate the deployment of energy-friendly solutions across the Internet of Things and smart energy industries.
https://www.youtube.com/watch?v=PIyuVPgtlxk