1. First look at the Features, Applications and internal block diagrams of the chip. This helps us to have a macro understanding of the chip, at this time we need to figure out some of the more special functions of the chip, make full use of the special functions of the chip, the overall circuit design, will have great benefits.
2, focus on the parameters of the chip, while you can refer to the manual given some of the parameter diagram, which is an important basis for whether to use the chip.
3. After selecting the device, study the chip pin definition and recommended PCB layout, which must be mastered in the hardware design process. In all pins, special attention should be paid to the control signal pin or special signal pin, which is the premise of using the chip well in the future.
4, carefully study the internal register of the chip, the degree of understanding of the register directly determines the degree of your mastery of the chip.