说明：  操作时序永远使用是任何一片IC芯片的最主要的内容。一个芯片的所有使用细节都会在它的官方器件手册上包含。所以使用一个器件事情，要充分做好的第一件事就是要把它的器件手册上有用的内容提取，掌握。
(Operation timing is always used is the most important content of any IC chip. All details of a chip's use will be included in its official device manual. So the first thing to do well in using a device is to extract and master the useful contents in its device manual.)