There will be some differences in the content structure of this different chip manual.
In general, there are several aspects:
1: A general understanding of the chip function
2: chip application environment (voltage, current requirements, including power supply voltage and maximum voltage, etc.)
3: Pin description, understand the role of each pin.
4: Typical application. Many chips can be schematically drawn with reference to typical applications.
5: Package (this is mainly for use when drawing PCB)
Of course, the chip information may also have an introduction to the principle of the chip, the internal structure of the chip, etc., and then understand it when needed.