说明：  AN022 C8051F02X系列带注释C例程.pdf C8051F02X系列带注释C 例程应用笔记，此应用笔记适用于下列器件 C8051F020 C8051F021 C8051F022 C8051F023 包含用C语言编写的例程代码是使用C8051F02X系列器件应用软件开发的起点
(This application note applies to the following devices: C8051F020, C8051F021, C8051F022, and C8051F023. This note contains example code written in ‘C’ that can be used as a starting point for the development of applications based on the C8051F02x family of devices.)