STM32F103
https://www.stmcu.jp/design/document/reference_manual/51428/
https://www.stmcu.jp/download/?dlid=51428_jp
https://www.stmcu.jp/download/?dlid=51428_jp#page=82&zoom=100,165,101
https://www.st.com/resource/en/reference_manual/cd00171190-stm32f101xx-stm32f102xx-stm32f103xx-stm32f105xx-and-stm32f107xx-advanced-arm-based-32-bit-mcus-stmicroelectronics.pdf
https://www.st.com/resource/en/application_note/an3116-stm32s-adc-modes-and-their-applications-stmicroelectronics.pdf