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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I accidentally discovered that the operating voltage range of a microcontroller is 5.5V-28V. This made me very curious in an era when 3.3V is the mainstream?I know that most automotive-grade MCUs are ...
As shown in the picture, I use it on a motorcycle. The IO is connected to a 3.3V microcontroller. It works fine when it is just installed, but after two days of use, it is accidentally turned on. The ...
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High-performance electronic circuits require highly clean power supplies. However, various electrical devices on the power supply line currently generate many high-order harmonics, which affect the po...[Details]
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The role of the header file INTRINS.H in KEIL In C51 single-chip microcomputer programming, the functions of the header file INTRINS.H will make you use it as easily as when using assembly.
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Microcontroller MCU
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