ARM Cortex-M0+ 32KBbyte Flash Controller
ST Micro
http://www.st.com/en/microcontrollers/stm32l031e6.html
http://www.st.com/resource/en/datasheet/stm32l031e6.pdf
Schematic Layout Generator Circuit Tree App
--add_component[u1][STM32L031E6Y6]
--add_block[led]
--add_block[uart_to_usb]