The first step is to create a new project. Making good use of the rich routine resources of Pingtou Ge can save a lot of time!In order to get more content online, you can first configure some paramete...
The STRING string in PCB in PROTEL99 cannot be rotated. Please help me. As shown in the figure below, after clicking the red dot in the figure, the cursor automatically moves to the lower left corner ...
Today, more and more designers are using gallium nitride-based flyback AC/DC power supplies in a variety of applications. GaN is important because it helps improve the efficiency of power transistors,...
SP(R13)
Special registers
LR(R14)
1. When a subroutine exists, the return address of the subroutine is saved
2. When an abnormal interrupt occurs, save the return address of the abnormal mode
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