ARM Cortex-M4 256KBbyte Flash Controller
ST Micro
http://www.st.com/en/microcontrollers/stm32l431cc.html
http://www.st.com/resource/en/datasheet/stm32l431cc.pdf
Schematic Layout Generator Circuit Tree App
--add_component[u1][STM32L431CCT6]
--add_block[led]
--add_block[uart_to_usb]