Design Resources
http://www.st.com/web/catalog/tools/FM116/SC959/SS1532/PF252419
Data sheet:
http://www.st.com/st-web-ui/static/active/en/resource/technical/document/data_brief/DM00037955.pdf
STM32 Open Development Environment
http://www.st.com/web/en/catalog/tools/FM146/CL2167